diff --git a/doc/develop/test/twister.rst b/doc/develop/test/twister.rst
index 42f09ef020eee..0add02e925ba7 100644
--- a/doc/develop/test/twister.rst
+++ b/doc/develop/test/twister.rst
@@ -434,6 +434,20 @@ build_only: <True|False> (default False)
     enabled in Zephyr and that the code builds, for example sensor drivers. Such
     test shall not be used to verify the functionality of the driver.
 
+no_build: <True|False> (default False)
+    If true, twister will not run any compilation or build steps. If the test requires
+    a specific executable file, this file should be built by a different test, or
+    being prov by any other means.
+
+    A typical use-case for this option is a BabbleSim test suite which builds one or
+    several executable binary file(s) which can be used by different test cases. This
+    option allows to avoid unnecessary abd time consuming recompilation, by using it
+    in conjunction with ``build_only`` option, where one or more tests build required
+    binaries, and all other tests are using their output.
+
+    Note: this option has only been tested with BabbleSim harness, which ensures that
+    ``build_only`` tests are executed first.
+
 build_on_all: <True|False> (default False)
     If true, attempt to build test scenario on all available platforms. This is mostly
     used in CI for increased coverage. Do not use this flag in new tests.
@@ -970,21 +984,68 @@ robot_option: <robot option> (default empty)
 Bsim
 ====
 
-Harness ``bsim`` is implemented in limited way - it helps only to copy the
-final executable (``zephyr.exe``) from build directory to BabbleSim's
-``bin`` directory (``${BSIM_OUT_PATH}/bin``).
+Harness ``bsim`` is allows to build and run BabbleSim test. If used with ``build_only``
+option, it will only copy the final executable (``zephyr.exe``) from build directory
+to BabbleSim's ``bin`` directory (``${BSIM_OUT_PATH}/bin``), which is useful to allow
+BabbleSim's tests to directly run after.
 
-This action is useful to allow BabbleSim's tests to directly run after.
-By default, the executable file name is (with dots and slashes
-replaced by underscores): ``bs_<platform_name>_<test_path>_<test_scenario_name>``.
-This name can be overridden with the ``bsim_exe_name`` option in
-``harness_config`` section.
+By default, the executable file name is (with dots and slashes replaced by underscores):
+``bs_<platform_name>_<test_path>_<test_scenario_name>``. This name can be overridden
+with the ``bsim_exe_name`` option in ``harness_config`` section.
 
-bsim_exe_name: <string>
+bsim_exe_name: <string> (optional)
     If provided, the executable filename when copying to BabbleSim's bin
     directory, will be ``bs_<platform_name>_<bsim_exe_name>`` instead of the
     default based on the test path and scenario name.
 
+bsim_verbosity: <int> (optional)
+    If provided, sets the verbosity log level for BabbleSim's simulated devices
+    and Phy layer. Default setting is 2.
+
+bsim_sim_length: <float> (optional)
+    Simulated time in microseconds that BabbleSim's simulation is allowed to run.
+    Default value is 60e6 (60 seconds). Note: simulated time isn't equal real-time.
+
+bsim_devices: <list of simulated device configurations> (optional)
+    Specifies a number of simulated BabbleSim devices, with test_id value (mandatory),
+    executable binary file name and list of options that are passed to simulation. If
+    executable file name is not specified, value of ``bsim_exe_name`` is used.
+
+    Example with two simulated devices using common executable and options:
+
+    .. code-block:: yaml
+
+        harness_config:
+          bsim_exe_name: test_exe
+          bsim_devices:
+            - test_id: dut
+            - test_id: tester
+          bsim_options:
+            - -RealEncryption=0
+
+    Example with two simulated device using different binary files and options:
+
+    .. code-block:: yaml
+
+        harness_config:
+          sim_devices:
+            - test_id: dut
+              exe: dut_exe
+              options:
+                - -RealEncryption=0
+            - test_id: tester
+              exe: tester_exe
+              options:
+                - -RealEncryption=1
+
+bsim_options: <list of options> (optional)
+    List of common command-line options passed to all simulated BabbleSim devices
+    in the ``bsim_devices`` field. Full list of options could be a combination of
+    ``bsim_options`` and invidiual options for each device from ``bsim_devices``.
+
+bsim_phy_options: <list of options> (optional)
+    List of command-line options passed for to BabbleSim's simulat Phy.
+
 Shell
 =====
 
diff --git a/scripts/pylib/twister/twisterlib/config_parser.py b/scripts/pylib/twister/twisterlib/config_parser.py
index 738fa8285b406..36e95daad9e63 100644
--- a/scripts/pylib/twister/twisterlib/config_parser.py
+++ b/scripts/pylib/twister/twisterlib/config_parser.py
@@ -57,6 +57,7 @@ class TwisterConfigParser:
         "extra_dtc_overlay_files": {"type": "list", "default": []},
         "required_snippets": {"type": "list"},
         "build_only": {"type": "bool", "default": False},
+                       "no_build": {"type": "bool", "default": False},
         "build_on_all": {"type": "bool", "default": False},
         "skip": {"type": "bool", "default": False},
         "slow": {"type": "bool", "default": False},
@@ -181,7 +182,7 @@ def get_scenario(self, name: str) -> dict[str, Any]:
                 if k == "filter":
                     d[k] = f"({d[k]}) and ({v})"
                 elif k not in ("extra_conf_files", "extra_overlay_confs",
-                               "extra_dtc_overlay_files"):
+                               "extra_dtc_overlay_files", "harness_config"):
                     if isinstance(d[k], str) and isinstance(v, list):
                         d[k] = [d[k]] + v
                     elif isinstance(d[k], list) and isinstance(v, str):
@@ -203,6 +204,25 @@ def get_scenario(self, name: str) -> dict[str, Any]:
             else:
                 d[k] = v
 
+        harness_config = copy.deepcopy(self.common.get("harness_config", {}))
+        if "harness_config" in self.scenarios[name]:
+            if harness_config:
+                for k, v in self.scenarios[name]["harness_config"].items():
+                    if k in harness_config:
+                        if isinstance(harness_config[k], list):
+                            if d["harness"] == "bsim":
+                                harness_config[k] += v if isinstance(v, list) else [v]
+                            else:
+                                harness_config[k] = v if isinstance(v, list) else [v]
+                        else:
+                            harness_config[k] = v
+                    else:
+                        harness_config[k] = v
+            else:
+                harness_config = self.scenarios[name]["harness_config"]
+
+        d["harness_config"] = harness_config
+
         # Compile conf files in to a single list. The order to apply them is:
         #  (1) CONF_FILEs extracted from common['extra_args']
         #  (2) common['extra_conf_files']
diff --git a/scripts/pylib/twister/twisterlib/harness.py b/scripts/pylib/twister/twisterlib/harness.py
index 58fbf5e5dcd56..98de77539c5ab 100644
--- a/scripts/pylib/twister/twisterlib/harness.py
+++ b/scripts/pylib/twister/twisterlib/harness.py
@@ -1,6 +1,8 @@
 # SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
+import glob
 import json
 import logging
 import os
@@ -41,6 +43,8 @@ class Harness:
     RUN_FAILED = "PROJECT EXECUTION FAILED"
     run_id_pattern = r"RunID: (?P<run_id>.*)"
 
+    cacheable = False
+
     def __init__(self):
         self._status = TwisterStatus.NONE
         self.reason = None
@@ -964,12 +968,77 @@ class Ztest(Test):
 
 class Bsim(Harness):
 
+    DEFAULT_VERBOSITY = 2
+    DEFAULT_SIM_LENGTH = 60e6
+
+    BSIM_READY_TIMEOUT_S = 60
+
+    cacheable = True
+
+    def __init__(self):
+        super().__init__()
+        self._bsim_out_path = os.getenv('BSIM_OUT_PATH', '')
+        if self._bsim_out_path:
+            self._bsim_out_path = os.path.join(self._bsim_out_path, 'bin')
+        self._exe_paths = {}
+        self._tc_output = []
+        self._start_time = 0
+
+    def _set_start_time(self):
+        self._start_time = time.time()
+
+    def _get_exe_path(self, name=None):
+        return self._exe_paths[name]
+
+    def configure(self, instance):
+        def replacer(exe_name):
+            return exe_name.replace(os.path.sep, '_').replace('.', '_').replace('@', '_')
+
+        super().configure(instance)
+
+        if not self._bsim_out_path:
+            raise Exception('Cannot copy bsim exe - BSIM_OUT_PATH not provided.')
+
+        exe_names = {}
+        cfg = self.instance.testsuite.harness_config
+
+        build_exe_name = cfg.get('bsim_exe_name', None)
+        if build_exe_name:
+            exe_names[None] = replacer(f'bs_{self.instance.platform.name}_{build_exe_name}')
+        else:
+            for exe_name in [dev['exe'] for dev in cfg.get('bsim_devices', [])]:
+                exe_names[exe_name] = replacer(f'bs_{self.instance.platform.name}_{exe_name}')
+
+        if not exe_names:
+            exe_names[None] = f'bs_{replacer(self.instance.name)}'
+
+        self._exe_paths = \
+            {name_id: os.path.join(self._bsim_out_path, exe) for name_id, exe in exe_names.items()}
+
+    def clean_exes(self):
+        self._set_start_time()
+
+        try:
+            for exe_path in self._exe_paths.values():
+                if os.path.exists(exe_path):
+                    os.remove(exe_path)
+        except Exception as e:
+            logger.warning(f'Failed to clean up bsim exes: {e}')
+
+    def wait_bsim_ready(self):
+        start_time = time.time()
+        while time.time() - start_time < Bsim.BSIM_READY_TIMEOUT_S:
+            if all([os.path.exists(f_path) for f_path in self._exe_paths.values()]):
+                return True
+            time.sleep(0.1)
+
+        return False
+
     def build(self):
         """
         Copying the application executable to BabbleSim's bin directory enables
         running multidevice bsim tests after twister has built them.
         """
-
         if self.instance is None:
             return
 
@@ -978,23 +1047,118 @@ def build(self):
             logger.warning('Cannot copy bsim exe - cannot find original executable.')
             return
 
-        bsim_out_path: str = os.getenv('BSIM_OUT_PATH', '')
-        if not bsim_out_path:
-            logger.warning('Cannot copy bsim exe - BSIM_OUT_PATH not provided.')
-            return
+        try:
+            new_exe_path = self._get_exe_path()
+            logger.debug(f'Copying executable from {original_exe_path} to {new_exe_path}')
+            shutil.copy(original_exe_path, new_exe_path)
+            self.status = TwisterStatus.PASS
+        except Exception as e:
+            logger.error(f'Failed to copy bsim exe: {e}')
+            self.status = TwisterStatus.ERROR
+        finally:
+            self.instance.execution_time = time.time() - self._start_time
 
-        new_exe_name: str = self.instance.testsuite.harness_config.get('bsim_exe_name', '')
-        if new_exe_name:
-            new_exe_name = f'bs_{self.instance.platform.name}_{new_exe_name}'
+    def _run_cmd(self, cmd, timeout):
+        logger.debug(' '.join(cmd))
+        with subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
+                              cwd=self._bsim_out_path) as proc:
+            try:
+                reader_t = threading.Thread(target=self._output_reader, args=(proc,), daemon=True)
+                reader_t.start()
+                reader_t.join(timeout)
+                if reader_t.is_alive():
+                    terminate_process(proc)
+                    logger.warning('Timeout has occurred. Can be extended in testspec file. '
+                                   f'Currently set to {timeout} seconds.')
+                    self.status = TwisterStatus.ERROR
+                proc.wait(timeout)
+            except subprocess.TimeoutExpired:
+                self.status = TwisterStatus.ERROR
+                proc.kill()
+
+        if proc.returncode != 0:
+            self.status = TwisterStatus.ERROR
+            self.instance.reason = f'Bsim error - return code {proc.returncode}'
         else:
-            new_exe_name = self.instance.name
-            new_exe_name = f'bs_{new_exe_name}'
+            self.status = TwisterStatus.PASS if self.status == TwisterStatus.NONE else self.status
+
+    def _output_reader(self, proc):
+        while proc.stdout.readable() and proc.poll() is None:
+            line = proc.stdout.readline().decode().strip()
+            if not line:
+                continue
+            logger.debug(line)
+            self._tc_output.append(line)
+        proc.communicate()
+
+    def _generate_commands(self):
+        bsim_phy_path = os.path.join(self._bsim_out_path, 'bs_2G4_phy_v1')
+        suite_id = f'-s={self.instance.name.split(os.path.sep)[-1].replace(".", "_")}'
+
+        cfg = self.instance.testsuite.harness_config
+        verbosity = f'-v={cfg.get("bsim_verbosity", self.DEFAULT_VERBOSITY)}'
+        sim_length = f'-sim_length={cfg.get("bsim_sim_length", self.DEFAULT_SIM_LENGTH)}'
+        extra_args = cfg.get('bsim_options', [])
+        phy_extra_args = cfg.get('bsim_phy_options', [])
+        devices = cfg.get('bsim_devices', [])
+        if not devices:
+            logger.error(f'No devices specified for bsim test {self.instance.name}')
+            self.status = TwisterStatus.ERROR
+            return []
+
+        cmds = []
+        for i, dev in enumerate(devices):
+            exe = self._get_exe_path(dev.get('exe', None))
+            cmds.append([exe, verbosity, suite_id, f'-d={i}', f'-testid={dev["test_id"]}']
+                         + extra_args + dev.get('options', []))
+
+        cmds.append([bsim_phy_path, verbosity, suite_id, f'-D={len(devices)}', sim_length]
+                     + phy_extra_args)
+
+        return cmds
 
-        new_exe_name = new_exe_name.replace(os.path.sep, '_').replace('.', '_').replace('@', '_')
+    def _clean_up_files(self):
+        # Clean-up any log files that the test may have generated
+        files = glob.glob(os.path.join(self._bsim_out_path, '*.log'))
+        recent_files = [f for f in files if os.path.getctime(f) > self._start_time]
+        for file in recent_files:
+            try:
+                os.remove(file)
+            except Exception as e:
+                logger.warning(f'Failed to clean up bsim log file {file}: {e}')
+
+    def bsim_run(self, timeout):
+        try:
+            self._set_start_time()
+
+            threads = []
+            for cmd in self._generate_commands():
+                t = threading.Thread(target=lambda c=cmd: self._run_cmd(c, timeout))
+                threads.append(t)
+                t.start()
+
+            for t in threads:
+                t.join(timeout=timeout)
+        except Exception as e:
+            logger.error(f'BSIM test failed: {e}')
+            self.status = TwisterStatus.ERROR
+        finally:
+            self._update_test_status()
+            self._clean_up_files()
+
+    def _update_test_status(self):
+        self.instance.execution_time += time.time() - self._start_time
+        if not self.instance.testcases:
+            self.instance.init_cases()
+
+        # currently there is always one testcase per bsim suite
+        self.instance.testcases[0].status = self.status if self.status != TwisterStatus.NONE else \
+                                            TwisterStatus.FAIL
+        self.instance.status = self.instance.testcases[0].status
+        if self.instance.status in [TwisterStatus.ERROR, TwisterStatus.FAIL]:
+            self.instance.reason = self.instance.reason or 'Bsim test failed'
+            self.instance.testcases[0].output = '\n'.join(self._tc_output)
 
-        new_exe_path: str = os.path.join(bsim_out_path, 'bin', new_exe_name)
-        logger.debug(f'Copying executable from {original_exe_path} to {new_exe_path}')
-        shutil.copy(original_exe_path, new_exe_path)
 
 class Ctest(Harness):
     def configure(self, instance: TestInstance):
@@ -1135,15 +1299,41 @@ def _parse_report_file(self, report):
 
 class HarnessImporter:
 
+    cache = {}
+    cache_lock = threading.Lock()
+
     @staticmethod
-    def get_harness(harness_name):
+    def get_harness(instance: TestInstance):
+        harness_class =  HarnessImporter._get_harness_class(instance.testsuite.harness)
+        if not harness_class:
+            return None
+
+        harness = None
+        with HarnessImporter.cache_lock:
+            if harness_class.cacheable and instance.name in HarnessImporter.cache:
+                harness = HarnessImporter.cache[instance.name]
+            else:
+                harness = harness_class()
+                if harness_class.cacheable:
+                    harness.configure(instance)
+                    HarnessImporter.cache[instance.name] = harness
+
+        return harness
+
+    @staticmethod
+    def _get_harness_class(harness_name: str):
         thismodule = sys.modules[__name__]
         try:
             if harness_name:
-                harness_class = getattr(thismodule, harness_name)
+                harness_class = getattr(thismodule, harness_name.capitalize())
             else:
                 harness_class = thismodule.Test
-            return harness_class()
+            return harness_class
         except AttributeError as e:
             logger.debug(f"harness {harness_name} not implemented: {e}")
             return None
+
+    @staticmethod
+    def get_harness_by_name(harness_name: str):
+        harness_class = HarnessImporter._get_harness_class(harness_name)
+        return harness_class() if harness_class else None
diff --git a/scripts/pylib/twister/twisterlib/runner.py b/scripts/pylib/twister/twisterlib/runner.py
index 5b02e3374d8a2..65ed48e1aea94 100644
--- a/scripts/pylib/twister/twisterlib/runner.py
+++ b/scripts/pylib/twister/twisterlib/runner.py
@@ -45,7 +45,7 @@
 from domains import Domains
 from twisterlib.coverage import run_coverage_instance
 from twisterlib.environment import TwisterEnv
-from twisterlib.harness import Ctest, HarnessImporter, Pytest
+from twisterlib.harness import Bsim, Ctest, HarnessImporter, Pytest
 from twisterlib.log_helper import log_command
 from twisterlib.platform import Platform
 from twisterlib.testinstance import TestInstance
@@ -630,6 +630,10 @@ def run_build(self, args=None):
 
         return ret
 
+    @property
+    def is_bsim_test(self):
+        return self.instance.testsuite.harness == 'bsim'
+
     def run_cmake(self, args="", filter_stages=None):
         if filter_stages is None:
             filter_stages = []
@@ -656,7 +660,7 @@ def run_cmake(self, args="", filter_stages=None):
             f'-DPython3_EXECUTABLE={pathlib.Path(sys.executable).as_posix()}'
         ]
 
-        if self.instance.testsuite.harness == 'bsim':
+        if self.is_bsim_test:
             cmake_args.extend([
                 '-DCMAKE_EXPORT_COMPILE_COMMANDS=ON',
                 '-DCONFIG_ASSERT=y',
@@ -1125,11 +1129,18 @@ def process(self, pipeline, done, message, lock, results):
 
         # Run the generated binary using one of the supported handlers
         elif op == "run":
-            try:
+            def run():
                 logger.debug(f"run test: {self.instance.name}")
                 self.run()
                 logger.debug(f"run status: {self.instance.name} {self.instance.status}")
 
+            try:
+                if self.is_bsim_test:
+                    with lock:
+                        run()
+                else:
+                    run()
+
                 # to make it work with pickle
                 self.instance.handler.thread = None
                 self.instance.handler.duts = None
@@ -1700,6 +1711,9 @@ def cmake_assemble_args(extra_args, handler, extra_conf_files, extra_overlay_con
         return args_expanded
 
     def cmake(self, filter_stages=None):
+        if self.is_bsim_test:
+            HarnessImporter.get_harness(self.instance).clean_exes()
+
         if filter_stages is None:
             filter_stages = []
         args = []
@@ -1729,10 +1743,10 @@ def cmake(self, filter_stages=None):
             self.options.extra_args, # CMake extra args
             self.instance.build_dir,
         )
-        return self.run_cmake(args,filter_stages)
+        return self.run_cmake(args, filter_stages)
 
     def build(self):
-        harness = HarnessImporter.get_harness(self.instance.testsuite.harness.capitalize())
+        harness = HarnessImporter.get_harness(self.instance)
         build_result = self.run_build(['--build', self.build_dir])
         try:
             if harness:
@@ -1765,7 +1779,7 @@ def run(self):
             if self.options.extra_test_args and instance.platform.arch == "posix":
                 instance.handler.extra_test_args = self.options.extra_test_args
 
-            harness = HarnessImporter.get_harness(instance.testsuite.harness.capitalize())
+            harness = HarnessImporter.get_harness(instance)
             try:
                 harness.configure(instance)
             except ConfigurationError as error:
@@ -1778,6 +1792,13 @@ def run(self):
                 harness.pytest_run(instance.handler.get_test_timeout())
             elif isinstance(harness, Ctest):
                 harness.ctest_run(instance.handler.get_test_timeout())
+            elif isinstance(harness, Bsim):
+                if harness.wait_bsim_ready():
+                    harness.bsim_run(instance.handler.get_test_timeout())
+                else:
+                    instance.status = TwisterStatus.ERROR
+                    instance.reason = "BSIM not ready"
+                    logger.error(instance.reason)
             else:
                 instance.handler.handle(harness)
 
@@ -1937,6 +1958,7 @@ def add_tasks_to_queue(
         test_only=False,
         retry_build_errors=False
     ):
+        task_list = []
         for instance in self.instances.values():
             if build_only:
                 instance.run = False
@@ -1971,17 +1993,23 @@ def add_tasks_to_queue(
                         expr_parser.reserved.keys()
                     )
 
-                if test_only and instance.run:
-                    pipeline.put({"op": "run", "test": instance})
+                if (test_only and instance.run) or\
+                    (instance.testsuite.no_build and instance.testsuite.harness == 'bsim'):
+                    task_list.append({"op": "run", "test": instance})
                 elif instance.filter_stages and "full" not in instance.filter_stages:
-                    pipeline.put({"op": "filter", "test": instance})
+                    task_list.append({"op": "filter", "test": instance})
                 else:
                     cache_file = os.path.join(instance.build_dir, "CMakeCache.txt")
                     if os.path.exists(cache_file) and self.env.options.aggressive_no_clean:
-                        pipeline.put({"op": "build", "test": instance})
+                        task_list.append({"op": "build", "test": instance})
                     else:
-                        pipeline.put({"op": "cmake", "test": instance})
+                        task_list.append({"op": "cmake", "test": instance})
+
+        if all([inst.testsuite.harness == 'bsim' for inst in self.instances.values()]):
+            task_list.sort(key=lambda t: t['op'] == 'cmake')
 
+        for task in task_list:
+            pipeline.put(task)
 
     def pipeline_mgr(self, pipeline, done_queue, lock, results):
         try:
diff --git a/scripts/pylib/twister/twisterlib/testinstance.py b/scripts/pylib/twister/twisterlib/testinstance.py
index 4822146d93ca1..7b1373fa0641e 100644
--- a/scripts/pylib/twister/twisterlib/testinstance.py
+++ b/scripts/pylib/twister/twisterlib/testinstance.py
@@ -226,7 +226,8 @@ def testsuite_runnable(testsuite, fixtures):
             'gtest',
             'robot',
             'ctest',
-            'shell'
+            'shell',
+            'bsim'
             ]:
             can_run = True
             # if we have a fixture that is also being supplied on the
diff --git a/scripts/schemas/twister/testsuite-schema.yaml b/scripts/schemas/twister/testsuite-schema.yaml
index 55bfbcb7b9cce..7554d2073f7f4 100644
--- a/scripts/schemas/twister/testsuite-schema.yaml
+++ b/scripts/schemas/twister/testsuite-schema.yaml
@@ -38,6 +38,9 @@ schema;scenario-schema:
     "build_only":
       type: bool
       required: false
+    "no_build":
+      type: bool
+      required: false
     "build_on_all":
       type: bool
       required: false
@@ -180,6 +183,39 @@ schema;scenario-schema:
         "bsim_exe_name":
           type: str
           required: false
+        "bsim_verbosity":
+          type: int
+          required: false
+        "bsim_sim_length":
+          type: float
+          required: false
+        "bsim_devices":
+          type: seq
+          required: false
+          sequence:
+            - type: map
+              mapping:
+                "test_id":
+                  type: str
+                  required: true
+                "exe":
+                  type: str
+                  required: false
+                "options":
+                  type: seq
+                  required: false
+                  sequence:
+                    - type: str
+        "bsim_options":
+          type: seq
+          required: false
+          sequence:
+            - type: str
+        "bsim_phy_options":
+          type: seq
+          required: false
+          sequence:
+            - type: str
     "min_ram":
       type: int
       required: false
diff --git a/scripts/tests/twister/test_harness.py b/scripts/tests/twister/test_harness.py
index bc529932eefbb..797823017daeb 100644
--- a/scripts/tests/twister/test_harness.py
+++ b/scripts/tests/twister/test_harness.py
@@ -670,7 +670,7 @@ def test_get_harness(name):
     harness_name = name
 
     # Act
-    harness_class = harnessimporter.get_harness(harness_name)
+    harness_class = harnessimporter.get_harness_by_name(harness_name)
 
     # Assert
     assert isinstance(harness_class, Test)
@@ -1211,6 +1211,8 @@ def test_gtest_repeated_run(gtest):
 
 
 def test_bsim_build(monkeypatch, tmp_path):
+    monkeypatch.setenv("BSIM_OUT_PATH", str(tmp_path))
+
     mocked_instance = mock.Mock()
     build_dir = tmp_path / "build_dir"
     os.makedirs(build_dir)
@@ -1219,9 +1221,8 @@ def test_bsim_build(monkeypatch, tmp_path):
     mocked_instance.testsuite.harness_config = {}
 
     harness = Bsim()
-    harness.instance = mocked_instance
+    harness.configure(mocked_instance)
 
-    monkeypatch.setenv("BSIM_OUT_PATH", str(tmp_path))
     os.makedirs(os.path.join(tmp_path, "bin"), exist_ok=True)
     zephyr_exe_path = os.path.join(build_dir, "zephyr", "zephyr.exe")
     os.makedirs(os.path.dirname(zephyr_exe_path), exist_ok=True)
diff --git a/scripts/tests/twister/test_runner.py b/scripts/tests/twister/test_runner.py
index 1bc4774bc41e5..8c3587c127de6 100644
--- a/scripts/tests/twister/test_runner.py
+++ b/scripts/tests/twister/test_runner.py
@@ -2324,8 +2324,8 @@ def test_projectbuilder_run(
     pytest_mock = mock.Mock(spec=Pytest)
     harness_mock = mock.Mock()
 
-    def mock_harness(name):
-        if name == 'Pytest':
+    def mock_harness(inst):
+        if instance_mock.testsuite.harness == 'pytest':
             return pytest_mock
         else:
             return harness_mock
diff --git a/tests/bsim/bluetooth/compile.nrf5340bsim_nrf5340_cpunet.sh b/tests/bsim/bluetooth/compile.nrf5340bsim_nrf5340_cpunet.sh
index bf049c331b2c6..dcb20010a1bd4 100755
--- a/tests/bsim/bluetooth/compile.nrf5340bsim_nrf5340_cpunet.sh
+++ b/tests/bsim/bluetooth/compile.nrf5340bsim_nrf5340_cpunet.sh
@@ -13,6 +13,5 @@ export BOARD="${BOARD:-nrf5340bsim/nrf5340/cpunet}"
 source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
 ${ZEPHYR_BASE}/tests/bsim/bluetooth/ll/compile.sh
-${ZEPHYR_BASE}/tests/bsim/bluetooth/host/compile.sh
 
 wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/compile.sh b/tests/bsim/bluetooth/compile.sh
index 76525a816135d..3648c8e332478 100755
--- a/tests/bsim/bluetooth/compile.sh
+++ b/tests/bsim/bluetooth/compile.sh
@@ -17,7 +17,6 @@ source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 # the rest to save a couple of seconds.
 run_in_background ${ZEPHYR_BASE}/tests/bsim/bluetooth/audio/compile.sh
 ${ZEPHYR_BASE}/tests/bsim/bluetooth/audio_samples/compile.sh
-${ZEPHYR_BASE}/tests/bsim/bluetooth/host/compile.sh
 ${ZEPHYR_BASE}/tests/bsim/bluetooth/ll/compile.sh
 ${ZEPHYR_BASE}/tests/bsim/bluetooth/mesh/compile.sh
 ${ZEPHYR_BASE}/tests/bsim/bluetooth/samples/compile.sh
diff --git a/tests/bsim/bluetooth/host/adv/chain/testcase.yaml b/tests/bsim/bluetooth/host/adv/chain/testcase.yaml
index 8f7e9361fa2b3..f4c1d518b23ed 100644
--- a/tests/bsim/bluetooth/host/adv/chain/testcase.yaml
+++ b/tests/bsim/bluetooth/host/adv/chain/testcase.yaml
@@ -1,11 +1,16 @@
 tests:
   bluetooth.host.adv.chain:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
       - nrf5340bsim/nrf5340/cpunet
     harness: bsim
+    timeout: 30
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_adv_chain_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 10e6
+      bsim_devices:
+        - test_id: adv
+        - test_id: scan
diff --git a/tests/bsim/bluetooth/host/adv/chain/tests_scripts/adv_chain.sh b/tests/bsim/bluetooth/host/adv/chain/tests_scripts/adv_chain.sh
deleted file mode 100755
index 045b1eba64903..0000000000000
--- a/tests/bsim/bluetooth/host/adv/chain/tests_scripts/adv_chain.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2018 Oticon A/S
-# SPDX-License-Identifier: Apache-2.0
-
-# Validate Extended Advertising AD Data fragment operation, PDU chaining and
-# Extended Scanning of chain PDUs
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="adv_chain"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_chain_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=adv
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_chain_prj_conf\
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=scan
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=10e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/encrypted/css_sample_data/test_scripts/run_tests.sh b/tests/bsim/bluetooth/host/adv/encrypted/css_sample_data/test_scripts/run_tests.sh
deleted file mode 100755
index 4bde3f3f74053..0000000000000
--- a/tests/bsim/bluetooth/host/adv/encrypted/css_sample_data/test_scripts/run_tests.sh
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="$(guess_test_long_name)"
-verbosity_level=2
-test_exe="bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-data_set=1
-
-Execute ./"$test_exe" \
-    -v=${verbosity_level} -s="${simulation_id}_${data_set}" -d=0 -testid=central \
-    -RealEncryption=1 -argstest data-set="${data_set}"
-
-Execute ./"$test_exe" \
-    -v=${verbosity_level} -s="${simulation_id}_${data_set}" -d=1 -testid=peripheral \
-    -RealEncryption=1 -argstest data-set="${data_set}"
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}_${data_set}" \
-    -D=2 -sim_length=20e6 $@
-
-wait_for_background_jobs
-
-data_set=2
-
-Execute ./"$test_exe" \
-    -v=${verbosity_level} -s="${simulation_id}_${data_set}" -d=0 -testid=central \
-    -RealEncryption=1 -argstest data-set="${data_set}"
-
-Execute ./"$test_exe" \
-    -v=${verbosity_level} -s="${simulation_id}_${data_set}" -d=1 -testid=peripheral \
-    -RealEncryption=1 -argstest data-set="${data_set}"
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}_${data_set}" \
-    -D=2 -sim_length=20e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/encrypted/css_sample_data/testcase.yaml b/tests/bsim/bluetooth/host/adv/encrypted/css_sample_data/testcase.yaml
index b4f5feb521bfd..0ae7816d43ae0 100644
--- a/tests/bsim/bluetooth/host/adv/encrypted/css_sample_data/testcase.yaml
+++ b/tests/bsim/bluetooth/host/adv/encrypted/css_sample_data/testcase.yaml
@@ -1,10 +1,43 @@
+common:
+  tags:
+    - bluetooth
+  platform_allow:
+    - nrf52_bsim/native
+  harness: bsim
+  timeout: 30
+  harness_config:
+    bsim_exe_name: tests_bsim_bluetooth_host_adv_encrypted_css_sample_data_prj_conf
+    bsim_verbosity: 2
+    bsim_sim_length: 20e6
+    bsim_options:
+      - -RealEncryption=1
+
 tests:
-  bluetooth.host.adv.encrypted.css_sample_data:
+  bluetooth.host.adv.encrypted.build_css_sample_data:
     build_only: true
-    tags:
-      - bluetooth
-    platform_allow:
-      - nrf52_bsim/native
-    harness: bsim
+
+  bluetooth.host.adv.encrypted.css_sample_data_1:
+    no_build: true
     harness_config:
-      bsim_exe_name: tests_bsim_bluetooth_host_adv_encrypted_css_sample_data_prj_conf
+      bsim_devices:
+        - test_id: central
+          options:
+            - -argstest
+            - data-set=1
+        - test_id: peripheral
+          options:
+            - -argstest
+            - data-set=1
+
+  bluetooth.host.adv.encrypted.css_sample_data_2:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: central
+          options:
+            - -argstest
+            - data-set=2
+        - test_id: peripheral
+          options:
+            - -argstest
+            - data-set=2
diff --git a/tests/bsim/bluetooth/host/adv/encrypted/ead_sample/test_scripts/ead_sample.sh b/tests/bsim/bluetooth/host/adv/encrypted/ead_sample/test_scripts/ead_sample.sh
deleted file mode 100755
index adbe2b19b781d..0000000000000
--- a/tests/bsim/bluetooth/host/adv/encrypted/ead_sample/test_scripts/ead_sample.sh
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="ead_sample"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_encrypted_ead_sample_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_encrypted_ead_sample_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/encrypted/ead_sample/testcase.yaml b/tests/bsim/bluetooth/host/adv/encrypted/ead_sample/testcase.yaml
index ebb55116b7d63..33ae7e687b6e5 100644
--- a/tests/bsim/bluetooth/host/adv/encrypted/ead_sample/testcase.yaml
+++ b/tests/bsim/bluetooth/host/adv/encrypted/ead_sample/testcase.yaml
@@ -1,10 +1,17 @@
 tests:
   bluetooth.host.adv.encrypted.ead_sample:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
     harness: bsim
+    timeout: 30
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_adv_encrypted_ead_sample_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_options:
+        - -RealEncryption=0
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
diff --git a/tests/bsim/bluetooth/host/adv/extended/testcase.yaml b/tests/bsim/bluetooth/host/adv/extended/testcase.yaml
index 0c433197a7711..4e205c487fb7a 100644
--- a/tests/bsim/bluetooth/host/adv/extended/testcase.yaml
+++ b/tests/bsim/bluetooth/host/adv/extended/testcase.yaml
@@ -1,20 +1,55 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
     - nrf5340bsim/nrf5340/cpunet
   harness: bsim
+  timeout: 30
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 10e6
+    bsim_options:
+      - -RealEncryption=0
 
 tests:
-  bluetooth.host.adv.extended.advertiser:
+  bluetooth.host.adv.extended.build_advertiser:
+    build_only: true
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_adv_extended_prj_advertiser_conf
     extra_args:
       CONF_FILE=prj_advertiser.conf
-  bluetooth.host.adv.extended.scanner:
+
+  bluetooth.host.adv.extended.build_scanner:
+    build_only: true
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_adv_extended_prj_scanner_conf
     extra_args:
       CONF_FILE=prj_scanner.conf
+
+  bluetooth.host.adv.extended.ext_adv:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: ext_adv_advertiser
+          exe: tests_bsim_bluetooth_host_adv_extended_prj_advertiser_conf
+        - test_id: ext_adv_scanner
+          exe: tests_bsim_bluetooth_host_adv_extended_prj_scanner_conf
+
+  bluetooth.host.adv.extended.ext_adv_conn:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: ext_adv_conn_advertiser
+          exe: tests_bsim_bluetooth_host_adv_extended_prj_advertiser_conf
+        - test_id: ext_adv_conn_scanner
+          exe: tests_bsim_bluetooth_host_adv_extended_prj_scanner_conf
+
+  bluetooth.host.adv.extended.ext_adv_conn_x5:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: ext_adv_conn_advertiser_x5
+          exe: tests_bsim_bluetooth_host_adv_extended_prj_advertiser_conf
+        - test_id: ext_adv_conn_scanner_x5
+          exe: tests_bsim_bluetooth_host_adv_extended_prj_scanner_conf
diff --git a/tests/bsim/bluetooth/host/adv/extended/tests_scripts/ext_adv.sh b/tests/bsim/bluetooth/host/adv/extended/tests_scripts/ext_adv.sh
deleted file mode 100755
index 268cbbabb8a73..0000000000000
--- a/tests/bsim/bluetooth/host/adv/extended/tests_scripts/ext_adv.sh
+++ /dev/null
@@ -1,28 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Croxel, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
-# Extended advertising test:
-#
-# - Broadcasting Only: a Bluetooth LE broadcaster advertises with extended
-#   advertising, and a scanner scans the extended advertisement packets.
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="ext_adv"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_extended_prj_advertiser_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -RealEncryption=0 \
-  -testid=ext_adv_advertiser -rs=23
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_extended_prj_scanner_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -RealEncryption=0 \
-  -testid=ext_adv_scanner -rs=6
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=10e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/extended/tests_scripts/ext_adv_conn.sh b/tests/bsim/bluetooth/host/adv/extended/tests_scripts/ext_adv_conn.sh
deleted file mode 100755
index 50a56853be6b4..0000000000000
--- a/tests/bsim/bluetooth/host/adv/extended/tests_scripts/ext_adv_conn.sh
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Croxel, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
-# Extended advertising test:
-#
-# - Connectable: In addition to broadcasting advertisements, it is connectable
-#   and restarts advertisements once disconnected. The scanner/central scans
-#   for the packets and establishes the connection, to then disconnect
-#   shortly-after.
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="ext_adv_conn"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_extended_prj_advertiser_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -RealEncryption=0 \
-  -testid=ext_adv_conn_advertiser -rs=23
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_extended_prj_scanner_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -RealEncryption=0 \
-  -testid=ext_adv_conn_scanner -rs=6
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=10e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/extended/tests_scripts/ext_adv_conn_x5.sh b/tests/bsim/bluetooth/host/adv/extended/tests_scripts/ext_adv_conn_x5.sh
deleted file mode 100755
index c5f3b3d10c2cf..0000000000000
--- a/tests/bsim/bluetooth/host/adv/extended/tests_scripts/ext_adv_conn_x5.sh
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Croxel, Inc.
-# SPDX-License-Identifier: Apache-2.0
-
-# Extended advertising test:
-#
-# - Connectable X5: In addition to broadcasting advertisements, it is connectable
-#   and restarts advertisements once disconnected. The scanner/central scans
-#   for the packets and establishes the connection, to then disconnect
-#   shortly-after. This is repeated over 5 times.
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="ext_adv_conn_x5"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_extended_prj_advertiser_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -RealEncryption=0 \
-  -testid=ext_adv_conn_advertiser_x5 -rs=23
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_extended_prj_scanner_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -RealEncryption=0 \
-  -testid=ext_adv_conn_scanner_x5 -rs=6
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=10e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/long_ad/test_scripts/run.sh b/tests/bsim/bluetooth/host/adv/long_ad/test_scripts/run.sh
deleted file mode 100755
index ad78f49e54e1e..0000000000000
--- a/tests/bsim/bluetooth/host/adv/long_ad/test_scripts/run.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name="$(guess_test_long_name)"
-
-simulation_id=${test_name}
-
-verbosity_level=2
-
-SIM_LEN_US=$((2 * 1000 * 1000))
-
-test_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${test_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -rs=420 -testid=advertiser
-Execute "${test_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -rs=69  -testid=scanner
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=${SIM_LEN_US} $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/long_ad/testcase.yaml b/tests/bsim/bluetooth/host/adv/long_ad/testcase.yaml
index 7b3735da2c387..7e96f66e54b27 100644
--- a/tests/bsim/bluetooth/host/adv/long_ad/testcase.yaml
+++ b/tests/bsim/bluetooth/host/adv/long_ad/testcase.yaml
@@ -1,10 +1,15 @@
 tests:
   bluetooth.host.adv.long_ad:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
     harness: bsim
+    timeout: 30
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_adv_long_ad_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 2e6
+      bsim_devices:
+        - test_id: advertiser
+        - test_id: scanner
diff --git a/tests/bsim/bluetooth/host/adv/periodic/testcase.yaml b/tests/bsim/bluetooth/host/adv/periodic/testcase.yaml
index 901c5f930cc63..a43a104df443a 100644
--- a/tests/bsim/bluetooth/host/adv/periodic/testcase.yaml
+++ b/tests/bsim/bluetooth/host/adv/periodic/testcase.yaml
@@ -1,23 +1,87 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
     - nrf5340bsim/nrf5340/cpunet
   harness: bsim
+  timeout: 30
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 15e6
+    bsim_options:
+      - -RealEncryption=0
 
 tests:
-  bluetooth.host.adv.periodic:
+  bluetooth.host.adv.periodic.build:
+    build_only: true
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_adv_periodic_prj_conf
-  bluetooth.host.adv.periodic.coded:
+
+  bluetooth.host.adv.periodic.build_coded:
+    build_only: true
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_adv_periodic_prj_coded_conf
     extra_args:
       EXTRA_CONF_FILE=prj_coded.conf
-  bluetooth.host.adv.periodic.long_data:
+
+  bluetooth.host.adv.periodic.build_long_data:
+    build_only: true
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_adv_periodic_prj_long_data_conf
     extra_args:
       EXTRA_CONF_FILE=prj_long_data.conf
+
+  bluetooth.host.adv.periodic.per_adv:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: per_adv_advertiser
+          exe: tests_bsim_bluetooth_host_adv_periodic_prj_conf
+        - test_id: per_adv_sync
+          exe: tests_bsim_bluetooth_host_adv_periodic_prj_conf
+
+  bluetooth.host.adv.periodic.per_adv_conn:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: per_adv_conn_advertiser
+          exe: tests_bsim_bluetooth_host_adv_periodic_prj_conf
+        - test_id: per_adv_conn_sync
+          exe: tests_bsim_bluetooth_host_adv_periodic_prj_conf
+
+  bluetooth.host.adv.periodic.per_adv_long_data:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: per_adv_long_data_advertiser
+          exe: tests_bsim_bluetooth_host_adv_periodic_prj_long_data_conf
+        - test_id: per_adv_long_data_sync
+          exe: tests_bsim_bluetooth_host_adv_periodic_prj_long_data_conf
+
+  bluetooth.host.adv.periodic.per_adv_conn_privacy:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: per_adv_conn_privacy_advertiser
+          exe: tests_bsim_bluetooth_host_adv_periodic_prj_conf
+        - test_id: per_adv_conn_privacy_sync
+          exe: tests_bsim_bluetooth_host_adv_periodic_prj_conf
+
+  bluetooth.host.adv.periodic.per_adv_not_scanning:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: per_adv_advertiser
+          exe: tests_bsim_bluetooth_host_adv_periodic_prj_conf
+        - test_id: per_adv_sync_app_not_scanning
+          exe: tests_bsim_bluetooth_host_adv_periodic_prj_conf
+
+  bluetooth.host.adv.periodic.per_adv_app_not_scanning_coded:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: per_adv_advertiser_coded_phy
+          exe: tests_bsim_bluetooth_host_adv_periodic_prj_coded_conf
+        - test_id: per_adv_sync_app_not_scanning
+          exe: tests_bsim_bluetooth_host_adv_periodic_prj_coded_conf
diff --git a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv.sh b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv.sh
deleted file mode 100755
index a27b9fedf4ee4..0000000000000
--- a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-# Basic periodic advertising sync test: an advertiser advertises with periodic
-# advertising, and a scanner scans for and syncs to the periodic advertising.
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="per_adv"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_periodic_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -RealEncryption=0 \
-  -testid=per_adv_advertiser -rs=23
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_periodic_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -RealEncryption=0 \
-  -testid=per_adv_sync -rs=6
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=15e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_app_not_scanning.sh b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_app_not_scanning.sh
deleted file mode 100755
index 33c61af5fb9c2..0000000000000
--- a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_app_not_scanning.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-# Periodic advertising sync test where the host starts scanning
-# automatically because the application didn't start it.
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="per_adv_not_scanning"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_periodic_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -RealEncryption=0 \
-  -testid=per_adv_advertiser -rs=23
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_periodic_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -RealEncryption=0 \
-  -testid=per_adv_sync_app_not_scanning -rs=6
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=15e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_app_not_scanning_coded.sh b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_app_not_scanning_coded.sh
deleted file mode 100755
index c64dbc4d20bc3..0000000000000
--- a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_app_not_scanning_coded.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-# Periodic advertising sync test where the host starts scanning
-# automatically because the application didn't start it.
-# The advertiser is using Coded PHY as primary PHY.
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="per_adv_app_not_scanning_coded"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_periodic_prj_coded_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -RealEncryption=0 \
-  -testid=per_adv_advertiser_coded_phy -rs=23
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_periodic_prj_coded_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -RealEncryption=0 \
-  -testid=per_adv_sync_app_not_scanning -rs=6
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=15e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn.sh b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn.sh
deleted file mode 100755
index dce1400647f23..0000000000000
--- a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-# Basic periodic advertising sync test: an advertiser advertises with periodic
-# advertising, and a scanner scans for and syncs to the periodic advertising.
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="per_adv_conn"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_periodic_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -RealEncryption=0 \
-  -testid=per_adv_conn_advertiser -rs=23
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_periodic_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -RealEncryption=0 \
-  -testid=per_adv_conn_sync -rs=6
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=15e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn_privacy.sh b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn_privacy.sh
deleted file mode 100755
index 018887a2255c3..0000000000000
--- a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_conn_privacy.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-# Basic periodic advertising sync test: an advertiser advertises with periodic
-# advertising, and a scanner scans for and syncs to the periodic advertising.
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="per_adv_conn_privacy"
-verbosity_level=2
-EXECUTE_TIMEOUT=60
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_periodic_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -RealEncryption=0 \
-  -testid=per_adv_conn_privacy_advertiser -rs=23
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_periodic_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -RealEncryption=0 \
-  -testid=per_adv_conn_privacy_sync -rs=6
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=15e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_long_data.sh b/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_long_data.sh
deleted file mode 100755
index 48c0934fb88dc..0000000000000
--- a/tests/bsim/bluetooth/host/adv/periodic/tests_scripts/per_adv_long_data.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-# Basic periodic advertising sync test: an advertiser advertises with periodic
-# advertising, and a scanner scans for and syncs to the periodic advertising.
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="per_adv_long_data"
-verbosity_level=2
-EXECUTE_TIMEOUT=60
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_periodic_prj_long_data_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -RealEncryption=0 \
-  -testid=per_adv_long_data_advertiser -rs=23
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_adv_periodic_prj_long_data_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -RealEncryption=0 \
-  -testid=per_adv_long_data_sync -rs=6
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=15e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/eatt/testcase.yaml b/tests/bsim/bluetooth/host/att/eatt/testcase.yaml
index db8476734e1a1..00a9bec68d3e0 100644
--- a/tests/bsim/bluetooth/host/att/eatt/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/eatt/testcase.yaml
@@ -1,27 +1,70 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
   harness: bsim
+  timeout: 120
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 60e6
+    bsim_options:
+      - -RealEncryption=1
 
 tests:
-  bluetooth.host.att.eatt.autoconnect:
+  bluetooth.host.att.eatt.build_autoconnect:
+    build_only: true
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf
     extra_args:
       EXTRA_CONF_FILE=prj_autoconnect.conf
+
+  bluetooth.host.att.eatt.build_lowres:
+    build_only: true
+    harness_config:
+      bsim_exe_name: tests_bsim_bluetooth_host_att_eatt_prj_lowres_conf
+    extra_args:
+      EXTRA_CONF_FILE=prj_lowres.conf
+
+  bluetooth.host.att.eatt.autoconnect:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: central_autoconnect
+          exe: tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf
+        - test_id: peripheral_autoconnect
+          exe: tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf
+
+  bluetooth.host.att.eatt.reconfigure:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: central_reconfigure
+          exe: tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf
+        - test_id: peripheral_reconfigure
+          exe: tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf
+
   bluetooth.host.adt.eatt.collision:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_att_eatt_prj_collision_conf
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+
   bluetooth.host.att.eatt.lowres:
+    no_build: true
     harness_config:
-      bsim_exe_name: tests_bsim_bluetooth_host_att_eatt_prj_lowres_conf
-    extra_args:
-      EXTRA_CONF_FILE=prj_lowres.conf
+      bsim_devices:
+        - test_id: central_lowres
+          exe: tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf
+        - test_id: peripheral_lowres
+          exe: tests_bsim_bluetooth_host_att_eatt_prj_lowres_conf
+
   bluetooth.host.att.eatt.multiple_conn:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_att_eatt_prj_multiple_conn_conf
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
     extra_args:
       EXTRA_CONF_FILE=prj_multiple_conn.conf
diff --git a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/autoconnect.sh b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/autoconnect.sh
deleted file mode 100755
index 47fc5f0e2a0e2..0000000000000
--- a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/autoconnect.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2022 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="connection"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central_autoconnect -RealEncryption=1
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral_autoconnect -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/collision.sh b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/collision.sh
deleted file mode 100755
index 010ac1600cbdd..0000000000000
--- a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/collision.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2022 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="collision"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_eatt_prj_collision_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_eatt_prj_collision_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/lowres.sh b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/lowres.sh
deleted file mode 100755
index b12d045edd9ab..0000000000000
--- a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/lowres.sh
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="lowres"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central_lowres -RealEncryption=1
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_eatt_prj_lowres_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral_lowres -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/multiple_conn.sh b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/multiple_conn.sh
deleted file mode 100755
index 9bdf58693dc3c..0000000000000
--- a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/multiple_conn.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2022 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="multiple_conn"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_eatt_prj_multiple_conn_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_eatt_prj_multiple_conn_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/reconfigure.sh b/tests/bsim/bluetooth/host/att/eatt/tests_scripts/reconfigure.sh
deleted file mode 100755
index d2a51f290986d..0000000000000
--- a/tests/bsim/bluetooth/host/att/eatt/tests_scripts/reconfigure.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2022 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="reconfigure"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central_reconfigure -RealEncryption=1
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_eatt_prj_autoconnect_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral_reconfigure -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/eatt_notif/test_scripts/eatt_notif.sh b/tests/bsim/bluetooth/host/att/eatt_notif/test_scripts/eatt_notif.sh
deleted file mode 100755
index 39d442e38b2e3..0000000000000
--- a/tests/bsim/bluetooth/host/att/eatt_notif/test_scripts/eatt_notif.sh
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-# EATT notification reliability test
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="eatt_notif"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_eatt_notif_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=client -RealEncryption=1
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_eatt_notif_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=server -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/eatt_notif/testcase.yaml b/tests/bsim/bluetooth/host/att/eatt_notif/testcase.yaml
index b87aaff2f0c54..02995cf4c6508 100644
--- a/tests/bsim/bluetooth/host/att/eatt_notif/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/eatt_notif/testcase.yaml
@@ -1,11 +1,18 @@
 tests:
   bluetooth.host.att.eatt_notif:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
       - nrf5340bsim/nrf5340/cpunet
     harness: bsim
+    timeout: 120
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_att_eatt_notif_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 30e6
+      bsim_options:
+        - -RealEncryption=1
+      bsim_devices:
+        - test_id: client
+        - test_id: server
diff --git a/tests/bsim/bluetooth/host/att/long_read/test_scripts/run.sh b/tests/bsim/bluetooth/host/att/long_read/test_scripts/run.sh
deleted file mode 100755
index 148865c54745c..0000000000000
--- a/tests/bsim/bluetooth/host/att/long_read/test_scripts/run.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="long_read"
-dev_exe=bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf
-args_all=(-s=${simulation_id} -D=2)
-args_dev=(-v=2 -RealEncryption=1 -testid=the_test)
-
-cd "${BSIM_OUT_PATH}/bin"
-
-Execute ./${dev_exe} "${args_all[@]}" "${args_dev[@]}" -d=0
-
-Execute ./${dev_exe} "${args_all[@]}" "${args_dev[@]}" -d=1
-
-Execute ./bs_2G4_phy_v1 "${args_all[@]}" -v=6 -sim_length=60e6
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/long_read/testcase.yaml b/tests/bsim/bluetooth/host/att/long_read/testcase.yaml
index 6579792fe46f9..15dc2f590921a 100644
--- a/tests/bsim/bluetooth/host/att/long_read/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/long_read/testcase.yaml
@@ -1,10 +1,18 @@
 tests:
   bluetooth.host.att.long_read:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
     harness: bsim
+    timeout: 30
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_att_long_read_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_options:
+        - -RealEncryption=1
+        - -D=2
+      bsim_devices:
+        - test_id: the_test
+        - test_id: the_test
diff --git a/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/run_test.sh
deleted file mode 100755
index b8cae7776531f..0000000000000
--- a/tests/bsim/bluetooth/host/att/mtu_update/test_scripts/run_test.sh
+++ /dev/null
@@ -1,25 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="mtu_update"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-central_exe="./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_mtu_update_prj_central_conf"
-peripheral_exe="./bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_mtu_update_prj_peripheral_conf"
-
-Execute "$central_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
-
-Execute "$peripheral_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=20e6 $@ -argschannel -at=40
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/mtu_update/testcase.yaml b/tests/bsim/bluetooth/host/att/mtu_update/testcase.yaml
index 028b2d7d66e2f..5284a0ee08c5c 100644
--- a/tests/bsim/bluetooth/host/att/mtu_update/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/mtu_update/testcase.yaml
@@ -1,19 +1,38 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
   harness: bsim
+  timeout: 30
 
 tests:
-  bluetooth.host.att.mtu_update.central:
+  bluetooth.host.att.mtu_update.build_central:
+    build_only: true
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_att_mtu_update_prj_central_conf
     extra_args:
       CONF_FILE=prj_central.conf
-  bluetooth.host.att.mtu_update.peripheral:
+
+  bluetooth.host.att.mtu_update.build_peripheral:
+    build_only: true
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_att_mtu_update_prj_peripheral_conf
     extra_args:
       CONF_FILE=prj_peripheral.conf
+
+  bluetooth.host.att.mtu_update.test:
+    no_build: true
+    harness_config:
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_options:
+        - -RealEncryption=1
+      bsim_devices:
+        - test_id: central
+          exe: tests_bsim_bluetooth_host_att_mtu_update_prj_central_conf
+        - test_id: peripheral
+          exe: tests_bsim_bluetooth_host_att_mtu_update_prj_peripheral_conf
+      bsim_phy_options:
+        - -argschannel
+        - -at=40
diff --git a/tests/bsim/bluetooth/host/att/open_close/test_scripts/run.sh b/tests/bsim/bluetooth/host/att/open_close/test_scripts/run.sh
deleted file mode 100755
index c18d5e0a9a512..0000000000000
--- a/tests/bsim/bluetooth/host/att/open_close/test_scripts/run.sh
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_path=$(guess_test_long_name)
-dev_exe="bs_${BOARD_TS}_${test_path}_prj_conf"
-simulation_id="${test_path}"
-
-EXECUTE_TIMEOUT=120
-
-cd "${BSIM_OUT_PATH}/bin"
-
-args_all=(-s="${simulation_id}" -D=2)
-args_dev=(-v=2 -RealEncryption=1 -testid=the_test)
-
-Execute ./"${dev_exe}" "${args_all[@]}" "${args_dev[@]}" -d=1
-Execute ./bs_2G4_phy_v1 "${args_all[@]}" -v=6 -sim_length=200e6
-Execute ./"${dev_exe}" "${args_all[@]}" "${args_dev[@]}" -d=0
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/open_close/testcase.yaml b/tests/bsim/bluetooth/host/att/open_close/testcase.yaml
index aa60ab2942c23..da46e3c04fc78 100644
--- a/tests/bsim/bluetooth/host/att/open_close/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/open_close/testcase.yaml
@@ -1,10 +1,18 @@
 tests:
   bluetooth.host.att.open_close:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 120
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_att_open_close_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 200e6
+      bsim_options:
+        - -RealEncryption=1
+        - -D=2
+      bsim_devices:
+        - test_id: the_test
+        - test_id: the_test
diff --git a/tests/bsim/bluetooth/host/att/pipeline/dut/testcase.yaml b/tests/bsim/bluetooth/host/att/pipeline/dut/testcase.yaml
index b881dcffbb39b..fb3b042e84d76 100644
--- a/tests/bsim/bluetooth/host/att/pipeline/dut/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/pipeline/dut/testcase.yaml
@@ -7,10 +7,11 @@ common:
   harness: bsim
 
 tests:
-  bluetooth.host.att.pipeline.dut:
+  bluetooth.host.att.pipeline.build_dut:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_att_pipeline_dut_prj_conf
-  bluetooth.host.att.pipeline.dut_rx_tx_prio:
+
+  bluetooth.host.att.pipeline.build_dut_rx_tx_prio:
     harness_config:
       bsim_exe_name:
         tests_bsim_bluetooth_host_att_pipeline_dut_prj_conf_rx_tx_prio_invert_extra_conf
diff --git a/tests/bsim/bluetooth/host/att/pipeline/test_scripts/run.sh b/tests/bsim/bluetooth/host/att/pipeline/test_scripts/run.sh
deleted file mode 100755
index dba6867a3aabb..0000000000000
--- a/tests/bsim/bluetooth/host/att/pipeline/test_scripts/run.sh
+++ /dev/null
@@ -1,40 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-dut_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_pipeline_dut_prj_conf"
-tester_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_pipeline_tester_prj_conf"
-
-simulation_id="att_pipeline"
-verbosity_level=2
-sim_length_us=100e6
-EXECUTE_TIMEOUT=240
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 \
-    -v=${verbosity_level} -s="${simulation_id}" -D=2 -sim_length=${sim_length_us} $@
-
-Execute "./$tester_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=1 -testid=tester_1 -RealEncryption=1 -rs=100
-
-Execute "./$dut_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=0 -testid=dut_1 -RealEncryption=1
-
-wait_for_background_jobs
-
-Execute ./bs_2G4_phy_v1 \
-    -v=${verbosity_level} -s="${simulation_id}" -D=3 -sim_length=${sim_length_us} $@
-
-Execute "./$tester_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=2 -testid=tester -RealEncryption=1 -rs=100
-
-Execute "./$dut_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=1 -testid=dut -RealEncryption=1 -rs=2000
-
-Execute "./$dut_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=0 -testid=dut -RealEncryption=1
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/pipeline/test_scripts/run_test_shall_not_pipeline_variant_rx_tx_prio_invert.sh b/tests/bsim/bluetooth/host/att/pipeline/test_scripts/run_test_shall_not_pipeline_variant_rx_tx_prio_invert.sh
deleted file mode 100755
index d271c9c04fad3..0000000000000
--- a/tests/bsim/bluetooth/host/att/pipeline/test_scripts/run_test_shall_not_pipeline_variant_rx_tx_prio_invert.sh
+++ /dev/null
@@ -1,50 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023-2024 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-#  Test purpose:
-#
-#  Basic check that the DUT GATT client does not pipeline ATT
-#  requests.
-#
-#  Sending a new request on a bearer before the response to the
-#  previous request has been received ('pipelining') is a
-#  protocol violation.
-#
-#  Test variant 'rx_tx_prio_invert':
-#
-#  - The priority of the RX and TX threads is inverted compared
-#    to the default configuration. The result shall be the same.
-#
-#  Test procedure:
-#
-#  - DUT is excercised by calling `gatt_write` in a loop.
-#  - Tester does not immediately respond but delays the response
-#    a bit to ensure the LL has time to transport any extra
-#    requests, exposing a bug.
-#  - Tester verifies there is no such extra request while it's
-#    delaying the response. Detecting an extra request proves a
-#    protocol violation.
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-dut_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_pipeline_dut_prj_conf"
-dut_exe+="_rx_tx_prio_invert_extra_conf"
-tester_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_pipeline_tester_prj_conf"
-
-simulation_id="att_pipeline_test_shall_not_pipeline_variant_rx_tx_prio_invert"
-verbosity_level=2
-sim_length_us=100e6
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 \
-    -v=${verbosity_level} -s="${simulation_id}" -D=2 -sim_length=${sim_length_us} $@
-
-Execute "./$tester_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=1 -testid=tester_1 -RealEncryption=1 -rs=100
-
-Execute "./$dut_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=0 -testid=dut_1 -RealEncryption=1
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/pipeline/test_scripts/run_test_tolerate_pipeline_variant_rx_tx_prio_invert.sh b/tests/bsim/bluetooth/host/att/pipeline/test_scripts/run_test_tolerate_pipeline_variant_rx_tx_prio_invert.sh
deleted file mode 100755
index d5d90c645d34e..0000000000000
--- a/tests/bsim/bluetooth/host/att/pipeline/test_scripts/run_test_tolerate_pipeline_variant_rx_tx_prio_invert.sh
+++ /dev/null
@@ -1,56 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023-2024 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-#  Test purpose:
-#
-#  Check that DUT GATT server gracefully handles a pipelining
-#  client.
-#
-#  The DUT GATT server must remain available to a well-behaved
-#  peer while a bad peer tries to spam ATT requests.
-#
-#  Test variant 'rx_tx_prio_invert':
-#
-#  - The priority of the RX and TX threads is inverted compared
-#    to the default configuration. The result shall be the same.
-#
-#  Test procedure:
-#
-#  - The well-behaved peer performs a discovery procedure
-#    repeatedly.
-#  - The bad peer spams ATT requests as fast as possible.
-#  - The connection with the well-behaved peer shall remain
-#    responsive.
-#  - Either: The DUT may disconnect the bad peer ACL after
-#    receiving a protocol violation occurs. The bad peer shall
-#    be able to reconnect and continue the bad behavior.
-#  - Or: The DUT may process and respond to the pipelined
-#    requests, preserving their ordering.
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-dut_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_pipeline_dut_prj_conf"
-dut_exe+="_rx_tx_prio_invert_extra_conf"
-tester_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_att_pipeline_tester_prj_conf"
-
-simulation_id="att_pipeline_test_tolerate_pipeline_variant_rx_tx_prio_invert"
-verbosity_level=2
-sim_length_us=100e6
-EXECUTE_TIMEOUT=240
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 \
-    -v=${verbosity_level} -s="${simulation_id}" -D=3 -sim_length=${sim_length_us} $@
-
-Execute "./$tester_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=2 -testid=tester -RealEncryption=1 -rs=100
-
-Execute "./$dut_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=1 -testid=dut -RealEncryption=1 -rs=2000
-
-Execute "./$dut_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=0 -testid=dut -RealEncryption=1
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/pipeline/testcase.yaml b/tests/bsim/bluetooth/host/att/pipeline/testcase.yaml
new file mode 100644
index 0000000000000..24b0621b88ac2
--- /dev/null
+++ b/tests/bsim/bluetooth/host/att/pipeline/testcase.yaml
@@ -0,0 +1,32 @@
+common:
+  no_build: true
+  tags:
+    - bluetooth
+  platform_allow:
+    - nrf52_bsim/native
+  timeout: 240
+  harness: bsim
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 100e6
+    bsim_options:
+      - -RealEncryption=1
+
+tests:
+  bluetooth.host.att.pipeline.shall_not_pipeline:
+    harness_config:
+      bsim_devices:
+        - test_id: dut_1
+          exe: tests_bsim_bluetooth_host_att_pipeline_dut_prj_conf_rx_tx_prio_invert_extra_conf
+        - test_id: tester_1
+          exe: tests_bsim_bluetooth_host_att_pipeline_tester_prj_conf
+
+  bluetooth.host.att.pipeline.tolerate_pipeline:
+    harness_config:
+      bsim_devices:
+        - test_id: dut
+          exe: tests_bsim_bluetooth_host_att_pipeline_dut_prj_conf
+        - test_id: dut
+          exe: tests_bsim_bluetooth_host_att_pipeline_dut_prj_conf
+        - test_id: tester
+          exe: tests_bsim_bluetooth_host_att_pipeline_tester_prj_conf
diff --git a/tests/bsim/bluetooth/host/att/pipeline/tester/testcase.yaml b/tests/bsim/bluetooth/host/att/pipeline/tester/testcase.yaml
index e1ed0e91a1a9a..a2bd826f95d52 100644
--- a/tests/bsim/bluetooth/host/att/pipeline/tester/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/pipeline/tester/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.att.pipeline.tester:
+  bluetooth.host.att.pipeline.build_tester:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/att/read_fill_buf/client/testcase.yaml b/tests/bsim/bluetooth/host/att/read_fill_buf/client/testcase.yaml
index 982a5ed861c40..43cfdbb60c538 100644
--- a/tests/bsim/bluetooth/host/att/read_fill_buf/client/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/read_fill_buf/client/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.att.read_fill_buf.client:
+  bluetooth.host.att.read_fill_buf.build_client:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/att/read_fill_buf/server/testcase.yaml b/tests/bsim/bluetooth/host/att/read_fill_buf/server/testcase.yaml
index a302947c6cc7c..24a98bed556c5 100644
--- a/tests/bsim/bluetooth/host/att/read_fill_buf/server/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/read_fill_buf/server/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.att.read_fill_buf.server:
+  bluetooth.host.att.read_fill_buf.build_server:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/att/read_fill_buf/test_scripts/run_tests.sh b/tests/bsim/bluetooth/host/att/read_fill_buf/test_scripts/run_tests.sh
deleted file mode 100755
index a35e1f0d2ad0d..0000000000000
--- a/tests/bsim/bluetooth/host/att/read_fill_buf/test_scripts/run_tests.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-simulation_id="read_fill_buf"
-test_exe_d0="./bs_${BOARD_TS}_$(guess_test_long_name)_client_prj_conf"
-test_exe_d1="./bs_${BOARD_TS}_$(guess_test_long_name)_server_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "$test_exe_d0" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=0 -testid=cli \
-    -RealEncryption=1
-
-Execute "$test_exe_d1" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=1 -testid=srv \
-    -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}" \
-    -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/read_fill_buf/testcase.yaml b/tests/bsim/bluetooth/host/att/read_fill_buf/testcase.yaml
new file mode 100644
index 0000000000000..3eb96d9d7eb26
--- /dev/null
+++ b/tests/bsim/bluetooth/host/att/read_fill_buf/testcase.yaml
@@ -0,0 +1,19 @@
+tests:
+  bluetooth.host.att.read_fill_buf.test_read_fil_buf:
+    no_build: true
+    tags:
+      - bluetooth
+    platform_allow:
+      - nrf52_bsim/native
+    timeout: 30
+    harness: bsim
+    harness_config:
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_options:
+        - -RealEncryption=1
+      bsim_devices:
+        - test_id: cli
+          exe: tests_bsim_bluetooth_host_att_read_fill_buf_client_prj_conf
+        - test_id: srv
+          exe: tests_bsim_bluetooth_host_att_read_fill_buf_server_prj_conf
diff --git a/tests/bsim/bluetooth/host/att/retry_on_sec_err/client/testcase.yaml b/tests/bsim/bluetooth/host/att/retry_on_sec_err/client/testcase.yaml
index d6dde84b2ab61..4c30084a4e8c9 100644
--- a/tests/bsim/bluetooth/host/att/retry_on_sec_err/client/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/retry_on_sec_err/client/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.att.retry_on_sec_err.client:
+  bluetooth.host.att.retry_on_sec_err.build_client:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/att/retry_on_sec_err/server/testcase.yaml b/tests/bsim/bluetooth/host/att/retry_on_sec_err/server/testcase.yaml
index 5e4ebd2b76be5..ce6db1f0a145f 100644
--- a/tests/bsim/bluetooth/host/att/retry_on_sec_err/server/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/retry_on_sec_err/server/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.att.retry_on_sec_err.server:
+  bluetooth.host.att.retry_on_sec_err.build_server:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/att/retry_on_sec_err/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/att/retry_on_sec_err/test_scripts/run_test.sh
deleted file mode 100755
index da52822211fc7..0000000000000
--- a/tests/bsim/bluetooth/host/att/retry_on_sec_err/test_scripts/run_test.sh
+++ /dev/null
@@ -1,29 +0,0 @@
-#!/bin/env bash
-# Copyright 2023 Codecoup
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="retry_on_sec_err"
-verbosity_level=2
-test_exe_d0="./bs_${BOARD_TS}_$(guess_test_long_name)_client_prj_conf"
-test_exe_d1="./bs_${BOARD_TS}_$(guess_test_long_name)_server_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-printf "\n\n===== ATT retry on security error (auto security elevation) ======\n\n"
-
-Execute "$test_exe_d0" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=0 -testid=test_client \
-    -RealEncryption=1
-
-Execute "$test_exe_d1" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=1 -testid=test_server \
-    -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}" \
-    -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/retry_on_sec_err/test_scripts/run_test_security_request.sh b/tests/bsim/bluetooth/host/att/retry_on_sec_err/test_scripts/run_test_security_request.sh
deleted file mode 100755
index 15c973a8cd191..0000000000000
--- a/tests/bsim/bluetooth/host/att/retry_on_sec_err/test_scripts/run_test_security_request.sh
+++ /dev/null
@@ -1,28 +0,0 @@
-#!/bin/env bash
-# Copyright 2023 Codecoup
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="retry_on_sec_err_seq_request"
-verbosity_level=2
-test_exe_d0="./bs_${BOARD_TS}_$(guess_test_long_name)_client_prj_conf"
-test_exe_d1="./bs_${BOARD_TS}_$(guess_test_long_name)_server_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-printf "\n\n==== ATT retry on security error (peripheral security request) ====\n\n"
-
-Execute "$test_exe_d0" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=0 -testid=test_client_security_request \
-    -RealEncryption=1
-
-Execute "$test_exe_d1" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=1 -testid=test_server_security_request \
-    -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}" \
-    -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/retry_on_sec_err/testcase.yaml b/tests/bsim/bluetooth/host/att/retry_on_sec_err/testcase.yaml
new file mode 100644
index 0000000000000..65b12072ec848
--- /dev/null
+++ b/tests/bsim/bluetooth/host/att/retry_on_sec_err/testcase.yaml
@@ -0,0 +1,30 @@
+common:
+  no_build: true
+  tags:
+    - bluetooth
+  platform_allow:
+    - nrf52_bsim/native
+  harness: bsim
+  timeout: 30
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 60e6
+    bsim_options:
+      - -RealEncryption=1
+
+tests:
+  bluetooth.host.att.retry_on_sec_err.retry_on_sec_err:
+    harness_config:
+      bsim_devices:
+        - test_id: test_client
+          exe: tests_bsim_bluetooth_host_att_retry_on_sec_err_client_prj_conf
+        - test_id: test_server
+          exe: tests_bsim_bluetooth_host_att_retry_on_sec_err_server_prj_conf
+
+  bluetooth.host.att.retry_on_sec_err.retry_on_sec_err_sec_request:
+    harness_config:
+      bsim_devices:
+        - test_id: test_client_security_request
+          exe: tests_bsim_bluetooth_host_att_retry_on_sec_err_client_prj_conf
+        - test_id: test_server_security_request
+          exe: tests_bsim_bluetooth_host_att_retry_on_sec_err_server_prj_conf
diff --git a/tests/bsim/bluetooth/host/att/sequential/dut/testcase.yaml b/tests/bsim/bluetooth/host/att/sequential/dut/testcase.yaml
index 82620e086bf25..3375c48f55ae8 100644
--- a/tests/bsim/bluetooth/host/att/sequential/dut/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/sequential/dut/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.att.sequential.dut:
+  bluetooth.host.att.sequential.build_dut:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/att/sequential/test_scripts/sequential.sh b/tests/bsim/bluetooth/host/att/sequential/test_scripts/sequential.sh
deleted file mode 100755
index b67a1fa379d03..0000000000000
--- a/tests/bsim/bluetooth/host/att/sequential/test_scripts/sequential.sh
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="att_sequential"
-verbosity_level=2
-
-dut_exe="bs_${BOARD_TS}_$(guess_test_long_name)_dut_prj_conf"
-tester_exe="bs_${BOARD_TS}_$(guess_test_long_name)_tester_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 \
-    -v=${verbosity_level} -s="${simulation_id}" -D=2 -sim_length=10e6 $@
-
-Execute "./$tester_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=1 -testid=tester -RealEncryption=0 -rs=100
-
-Execute "./$dut_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=0 -testid=dut -RealEncryption=0
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/sequential/testcase.yaml b/tests/bsim/bluetooth/host/att/sequential/testcase.yaml
new file mode 100644
index 0000000000000..308ca6d171f50
--- /dev/null
+++ b/tests/bsim/bluetooth/host/att/sequential/testcase.yaml
@@ -0,0 +1,19 @@
+tests:
+  bluetooth.host.att.sequential.att_sequential:
+    no_build: true
+    tags:
+      - bluetooth
+    platform_allow:
+      - nrf52_bsim/native
+    timeout: 30
+    harness: bsim
+    harness_config:
+      bsim_verbosity: 2
+      bsim_sim_length: 10e6
+      bsim_options:
+        - -RealEncryption=0
+      bsim_devices:
+        - test_id: dut
+          exe: tests_bsim_bluetooth_host_att_sequential_dut_prj_conf
+        - test_id: tester
+          exe: tests_bsim_bluetooth_host_att_sequential_tester_prj_conf
diff --git a/tests/bsim/bluetooth/host/att/sequential/tester/testcase.yaml b/tests/bsim/bluetooth/host/att/sequential/tester/testcase.yaml
index e092ca177b7b1..3ccfe3694c2b7 100644
--- a/tests/bsim/bluetooth/host/att/sequential/tester/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/sequential/tester/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.att.sequential.tester:
+  bluetooth.host.att.sequential.build_tester:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/att/timeout/test_scripts/run.sh b/tests/bsim/bluetooth/host/att/timeout/test_scripts/run.sh
deleted file mode 100755
index 1a28986ba6b1d..0000000000000
--- a/tests/bsim/bluetooth/host/att/timeout/test_scripts/run.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2024 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu -x
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-EXECUTE_TIMEOUT=120
-
-simulation_id="timeout"
-dev_exe=bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf
-args_all=(-s=${simulation_id} -D=2)
-args_dev=(-v=2 -RealEncryption=1 -testid=the_test)
-
-cd "${BSIM_OUT_PATH}/bin"
-
-Execute ./${dev_exe} "${args_all[@]}" "${args_dev[@]}" -d=0
-
-Execute ./${dev_exe} "${args_all[@]}" "${args_dev[@]}" -d=1
-
-Execute ./bs_2G4_phy_v1 "${args_all[@]}" -sim_length=200e6
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/att/timeout/testcase.yaml b/tests/bsim/bluetooth/host/att/timeout/testcase.yaml
index 8d00256097dbe..c2f247d9f1c7a 100644
--- a/tests/bsim/bluetooth/host/att/timeout/testcase.yaml
+++ b/tests/bsim/bluetooth/host/att/timeout/testcase.yaml
@@ -1,10 +1,18 @@
 tests:
   bluetooth.host.att.timeout:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 120
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_att_timeout_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 200e6
+      bsim_options:
+        - -RealEncryption=1
+        - -D=2
+      bsim_devices:
+        - test_id: the_test
+        - test_id: the_test
diff --git a/tests/bsim/bluetooth/host/central/testcase.yaml b/tests/bsim/bluetooth/host/central/testcase.yaml
index e4ea1098aa188..c49ee37c4b674 100644
--- a/tests/bsim/bluetooth/host/central/testcase.yaml
+++ b/tests/bsim/bluetooth/host/central/testcase.yaml
@@ -1,11 +1,34 @@
+common:
+  no_build: true
+  tags:
+    - bluetooth
+  platform_allow:
+    - nrf52_bsim/native
+    - nrf5340bsim/nrf5340/cpunet
+  harness: bsim
+  timeout: 30
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 60e6
+    bsim_exe_name: tests_bsim_bluetooth_host_central_prj_conf
+
 tests:
-  bluetooth.host.central:
+  bluetooth.host.central.build:
     build_only: true
-    tags:
-      - bluetooth
-    platform_allow:
-      - nrf52_bsim/native
-      - nrf5340bsim/nrf5340/cpunet
-    harness: bsim
+    no_build: false
+
+  bluetooth.host.central.central_connect_timeout:
     harness_config:
-      bsim_exe_name: tests_bsim_bluetooth_host_central_prj_conf
+      bsim_devices:
+        - test_id: central_connect_timeout
+
+  bluetooth.host.central.central_connect_when_connecting:
+    harness_config:
+      bsim_devices:
+        - test_id: central_connect_when_connecting
+
+  bluetooth.host.central.central_connect_to_existing:
+    harness_config:
+      bsim_devices:
+        - test_id: central_connect_to_existing
+        - test_id: peripheral_dummy
diff --git a/tests/bsim/bluetooth/host/central/tests_scripts/run_central_connect_timeout.sh b/tests/bsim/bluetooth/host/central/tests_scripts/run_central_connect_timeout.sh
deleted file mode 100755
index 3b0cdcab24e0d..0000000000000
--- a/tests/bsim/bluetooth/host/central/tests_scripts/run_central_connect_timeout.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="central_connect_timeout"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_central_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central_connect_timeout
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=1 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/central/tests_scripts/run_central_connect_to_existing.sh b/tests/bsim/bluetooth/host/central/tests_scripts/run_central_connect_to_existing.sh
deleted file mode 100755
index af64f6a14ad10..0000000000000
--- a/tests/bsim/bluetooth/host/central/tests_scripts/run_central_connect_to_existing.sh
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="central_connect_timeout_to_existing"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_central_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central_connect_to_existing
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_central_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral_dummy
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/central/tests_scripts/run_central_connect_when_connecting.sh b/tests/bsim/bluetooth/host/central/tests_scripts/run_central_connect_when_connecting.sh
deleted file mode 100755
index 5d352adc0fe16..0000000000000
--- a/tests/bsim/bluetooth/host/central/tests_scripts/run_central_connect_when_connecting.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="central_connect_when_connecting"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_central_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central_connect_when_connecting
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=1 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/compile.sh b/tests/bsim/bluetooth/host/compile.sh
deleted file mode 100755
index 3d2d0b022445a..0000000000000
--- a/tests/bsim/bluetooth/host/compile.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-# Compile all the applications needed by the bsim tests in these subfolders
-
-#set -x #uncomment this line for debugging
-set -ue
-
-: "${ZEPHYR_BASE:?ZEPHYR_BASE must be set to point to the zephyr root directory}"
-
-#Set a default value to BOARD if it does not have one yet
-BOARD="${BOARD:-nrf52_bsim/native}"
-
-west twister -T ${ZEPHYR_BASE}/tests/bsim/bluetooth/host/ -p ${BOARD}
diff --git a/tests/bsim/bluetooth/host/gatt/authorization/test_scripts/gatt.sh b/tests/bsim/bluetooth/host/gatt/authorization/test_scripts/gatt.sh
deleted file mode 100755
index c318928fbf8ea..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/authorization/test_scripts/gatt.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2024 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="gatt_authorization"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_authorization_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=gatt_client
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_authorization_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=gatt_server
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/authorization/testcase.yaml b/tests/bsim/bluetooth/host/gatt/authorization/testcase.yaml
index 56223b9248684..45f04c1c477ef 100644
--- a/tests/bsim/bluetooth/host/gatt/authorization/testcase.yaml
+++ b/tests/bsim/bluetooth/host/gatt/authorization/testcase.yaml
@@ -1,11 +1,16 @@
 tests:
   bluetooth.host.gatt.authorization:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
       - nrf5340bsim/nrf5340/cpunet
+    timeout: 120
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_gatt_authorization_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 30e6
+      bsim_devices:
+        - test_id: gatt_client
+        - test_id: gatt_server
diff --git a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/_run_test.sh b/tests/bsim/bluetooth/host/gatt/caching/test_scripts/_run_test.sh
deleted file mode 100755
index 5ba9e92e66f18..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/_run_test.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-BIN_SUFFIX=${bin_suffix:-}
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_caching_prj_conf${BIN_SUFFIX} \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=${client_id} -RealEncryption=1
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_caching_prj_conf${BIN_SUFFIX} \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=${server_id} -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_db_hash_read_eatt.sh b/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_db_hash_read_eatt.sh
deleted file mode 100755
index fc9fc3675b55a..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_db_hash_read_eatt.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_caching_db_hash_read_eatt" \
-    client_id="gatt_client_db_hash_read_eatt" \
-    server_id="gatt_server_eatt" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_db_hash_read_no_eatt.sh b/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_db_hash_read_no_eatt.sh
deleted file mode 100755
index acafc89515a70..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_db_hash_read_no_eatt.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_caching_db_hash_read_no_eatt" \
-    client_id="gatt_client_db_hash_read_no_eatt" \
-    server_id="gatt_server_no_eatt" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_out_of_sync_eatt.sh b/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_out_of_sync_eatt.sh
deleted file mode 100755
index 7326530b02308..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_out_of_sync_eatt.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_caching_out_of_sync_eatt" \
-    client_id="gatt_client_out_of_sync_eatt" \
-    server_id="gatt_server_eatt" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_out_of_sync_no_eatt.sh b/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_out_of_sync_no_eatt.sh
deleted file mode 100755
index bfab7cf6c85cd..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_out_of_sync_no_eatt.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_caching_out_of_sync_no_eatt" \
-    client_id="gatt_client_out_of_sync_no_eatt" \
-    server_id="gatt_server_no_eatt" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_psa_db_hash_read_eatt.sh b/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_psa_db_hash_read_eatt.sh
deleted file mode 100755
index 281ff23a055db..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_psa_db_hash_read_eatt.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2024 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_caching_psa_db_hash_read_eatt_psa" \
-    client_id="gatt_client_db_hash_read_eatt" \
-    server_id="gatt_server_eatt" \
-    bin_suffix="_psa_overlay_conf" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_retry_reads_eatt.sh b/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_retry_reads_eatt.sh
deleted file mode 100755
index b9b9c960c4528..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_retry_reads_eatt.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_caching_retry_reads_eatt" \
-    client_id="gatt_client_retry_reads_eatt" \
-    server_id="gatt_server_eatt" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_retry_reads_no_eatt.sh b/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_retry_reads_no_eatt.sh
deleted file mode 100755
index 2b7fda8fa9424..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/caching/test_scripts/gatt_caching_retry_reads_no_eatt.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_caching_retry_reads_no_eatt" \
-    client_id="gatt_client_retry_reads_no_eatt" \
-    server_id="gatt_server_no_eatt" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/caching/testcase.yaml b/tests/bsim/bluetooth/host/gatt/caching/testcase.yaml
index dd23374dcf4f9..47aeb25fb3cb9 100644
--- a/tests/bsim/bluetooth/host/gatt/caching/testcase.yaml
+++ b/tests/bsim/bluetooth/host/gatt/caching/testcase.yaml
@@ -1,18 +1,66 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
     - nrf5340bsim/nrf5340/cpunet
+  no_build: true
+  timeout: 120
   harness: bsim
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 60e6
+    bsim_exe_name: tests_bsim_bluetooth_host_gatt_caching_prj_conf
+    bsim_options:
+      - -RealEncryption=1
 
 tests:
-  bluetooth.host.gatt.caching:
+  bluetooth.host.gatt.build_caching:
+    build_only: true
+    no_build: false
+
+  bluetooth.host.gatt.caching_db_hash_read_eatt:
     harness_config:
-      bsim_exe_name: tests_bsim_bluetooth_host_gatt_caching_prj_conf
-  bluetooth.host.gatt.caching_psa_overlay:
+      bsim_devices:
+        - test_id: gatt_client_db_hash_read_eatt
+        - test_id: gatt_server_eatt
+
+  bluetooth.host.gatt.caching_db_hash_read_no_eatt:
     harness_config:
-      bsim_exe_name: tests_bsim_bluetooth_host_gatt_caching_prj_conf_psa_overlay_conf
+      bsim_devices:
+        - test_id: gatt_client_db_hash_read_no_eatt
+        - test_id: gatt_server_no_eatt
+
+  bluetooth.host.gatt.caching_out_of_sync_eatt:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_out_of_sync_eatt
+        - test_id: gatt_server_eatt
+
+  bluetooth.host.gatt.caching_out_of_sync_no_eatt:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_out_of_sync_no_eatt
+        - test_id: gatt_server_no_eatt
+
+  bluetooth.host.gatt.caching_psa_db_hash_read_eatt_psa:
+    no_build: false
     extra_args:
       EXTRA_CONF_FILE=psa_overlay.conf
+    harness_config:
+      bsim_exe_name: tests_bsim_bluetooth_host_gatt_caching_prj_conf_psa_overlay_conf
+      bsim_devices:
+        - test_id: gatt_client_db_hash_read_eatt
+        - test_id: gatt_server_eatt
+
+  bluetooth.host.gatt.caching_retry_reads_eatt:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_retry_reads_eatt
+        - test_id: gatt_server_eatt
+
+  bluetooth.host.gatt.caching_retry_reads_no_eatt:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_retry_reads_no_eatt
+        - test_id: gatt_server_no_eatt
diff --git a/tests/bsim/bluetooth/host/gatt/ccc_store/test_scripts/ccc_store.sh b/tests/bsim/bluetooth/host/gatt/ccc_store/test_scripts/ccc_store.sh
deleted file mode 100755
index e09177ef122ee..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/ccc_store/test_scripts/ccc_store.sh
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_exe="bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf"
-simulation_id="ccc_store"
-verbosity_level=2
-EXECUTE_TIMEOUT=60
-
-cd ${BSIM_OUT_PATH}/bin
-
-if [ "${1}" != 'debug0' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1 -argstest 10
-fi
-
-if [ "${1}" != 'debug1' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1 -argstest 10
-fi
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6
-
-if [ "${1}" == 'debug0' ]; then
-  gdb --args "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1 -argstest 10
-fi
-
-if [ "${1}" == 'debug1' ]; then
-  gdb --args "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1 -argstest 10
-fi
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/ccc_store/test_scripts/ccc_store_no_long_wq.sh b/tests/bsim/bluetooth/host/gatt/ccc_store/test_scripts/ccc_store_no_long_wq.sh
deleted file mode 100755
index cad38e56e524e..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/ccc_store/test_scripts/ccc_store_no_long_wq.sh
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/bin/env bash
-# Copyright 2025 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_exe="bs_${BOARD_TS}_$(guess_test_long_name)_overlay-no_long_wq_conf"
-simulation_id="ccc_store_no_long_wq"
-verbosity_level=2
-EXECUTE_TIMEOUT=60
-
-cd ${BSIM_OUT_PATH}/bin
-
-if [ "${1}" != 'debug0' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1 -argstest 10
-fi
-
-if [ "${1}" != 'debug1' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1 -argstest 10
-fi
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6
-
-if [ "${1}" == 'debug0' ]; then
-  gdb --args "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1 -argstest 10
-fi
-
-if [ "${1}" == 'debug1' ]; then
-  gdb --args "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1 -argstest 10
-fi
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/ccc_store/test_scripts/ccc_store_no_store_on_write.sh b/tests/bsim/bluetooth/host/gatt/ccc_store/test_scripts/ccc_store_no_store_on_write.sh
deleted file mode 100755
index b732d1c598fbf..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/ccc_store/test_scripts/ccc_store_no_store_on_write.sh
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_exe="bs_${BOARD_TS}_$(guess_test_long_name)_overlay-no_store_on_write_conf"
-simulation_id="ccc_store_no_store_on_write"
-verbosity_level=2
-EXECUTE_TIMEOUT=60
-
-cd ${BSIM_OUT_PATH}/bin
-
-if [ "${1}" != 'debug0' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1 -argstest 10
-fi
-
-if [ "${1}" != 'debug1' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1 -argstest 10
-fi
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6
-
-if [ "${1}" == 'debug0' ]; then
-  gdb --args "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1 -argstest 10
-fi
-
-if [ "${1}" == 'debug1' ]; then
-  gdb --args "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1 -argstest 10
-fi
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/ccc_store/testcase.yaml b/tests/bsim/bluetooth/host/gatt/ccc_store/testcase.yaml
index a2ee367de1a3d..4d48d21cb9fe1 100644
--- a/tests/bsim/bluetooth/host/gatt/ccc_store/testcase.yaml
+++ b/tests/bsim/bluetooth/host/gatt/ccc_store/testcase.yaml
@@ -1,22 +1,63 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
   harness: bsim
+  timeout: 60
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 60e6
+    bsim_options:
+      - -RealEncryption=1
+      - -flash_rm
 
 tests:
   bluetooth.host.gatt.ccc_store:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_gatt_ccc_store_prj_conf
+      bsim_devices:
+        - test_id: central
+          options:
+            - -flash=ccc_store_client.log.bin
+            - -argstest
+            - '10'
+        - test_id: peripheral
+          options:
+            - -flash=ccc_store_server.log.bin
+            - -argstest
+            - '10'
+
   bluetooth.host.gatt.ccc_store_no_store_on_write:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_gatt_ccc_store_overlay-no_store_on_write_conf
+      bsim_devices:
+        - test_id: central
+          options:
+            - -flash=ccc_no_store_on_write_client.log.bin
+            - -argstest
+            - '10'
+        - test_id: peripheral
+          options:
+            - -flash=ccc_no_store_on_write_server.log.bin
+            - -argstest
+            - '10'
     extra_args:
       EXTRA_CONF_FILE=overlay-no_store_on_write.conf
+
   bluetooth.host.gatt.ccc_store_no_long_wq:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_gatt_ccc_store_overlay-no_long_wq_conf
+      bsim_devices:
+        - test_id: central
+          options:
+            - -flash=ccc_store_no_long_wq_client.log.bin
+            - -argstest
+            - '10'
+        - test_id: peripheral
+          options:
+            - -flash=ccc_store_no_long_wq_server.log.bin
+            - -argstest
+            - '10'
     extra_args:
       EXTRA_CONF_FILE=overlay-no_long_wq.conf
diff --git a/tests/bsim/bluetooth/host/gatt/device_name/test_scripts/run_device_name.sh b/tests/bsim/bluetooth/host/gatt/device_name/test_scripts/run_device_name.sh
deleted file mode 100755
index 944de3a87fe13..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/device_name/test_scripts/run_device_name.sh
+++ /dev/null
@@ -1,28 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2025 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name="$(guess_test_long_name)"
-simulation_id=${test_name}
-
-verbosity_level=2
-
-EXECUTE_TIMEOUT=120
-
-SIM_LEN_US=$((2 * 1000 * 1000))
-
-test_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=${SIM_LEN_US} $@
-
-Execute "${test_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -rs=420 -testid=server \
-    -RealEncryption=1
-Execute "${test_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -rs=69  -testid=client \
-    -RealEncryption=1
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/device_name/testcase.yaml b/tests/bsim/bluetooth/host/gatt/device_name/testcase.yaml
index 4bd3a1b7c8349..4289dec0d9ac1 100644
--- a/tests/bsim/bluetooth/host/gatt/device_name/testcase.yaml
+++ b/tests/bsim/bluetooth/host/gatt/device_name/testcase.yaml
@@ -1,10 +1,17 @@
 tests:
   bluetooth.host.gatt.device_name:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 120
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_gatt_device_name_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 2e6
+      bsim_options:
+        - -RealEncryption=1
+      bsim_devices:
+        - test_id: server
+        - test_id: client
diff --git a/tests/bsim/bluetooth/host/gatt/general/test_scripts/gatt.sh b/tests/bsim/bluetooth/host/gatt/general/test_scripts/gatt.sh
deleted file mode 100755
index dbcf007840332..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/general/test_scripts/gatt.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-# Basic GATT test: A central acting as a GATT client scans for and connects
-# to a peripheral acting as a GATT server. The GATT client will then attempt
-# to write and read to and from a few GATT characteristics.
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="gatt"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_general_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=gatt_client -RealEncryption=1
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_general_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=gatt_server -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/general/testcase.yaml b/tests/bsim/bluetooth/host/gatt/general/testcase.yaml
index c173715475ab4..9abe82b06b001 100644
--- a/tests/bsim/bluetooth/host/gatt/general/testcase.yaml
+++ b/tests/bsim/bluetooth/host/gatt/general/testcase.yaml
@@ -1,11 +1,18 @@
 tests:
   bluetooth.host.gatt.general:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
       - nrf5340bsim/nrf5340/cpunet
     harness: bsim
+    timeout: 120
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_gatt_general_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 30e6
+      bsim_options:
+        - -RealEncryption=1
+      bsim_devices:
+        - test_id: gatt_client
+        - test_id: gatt_server
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/_run_test.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/_run_test.sh
deleted file mode 100755
index faa4199dd04c6..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/_run_test.sh
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_notify_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=${client_id} -RealEncryption=1
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_notify_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=${server_id} -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_enhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_enhanced.sh
deleted file mode 100755
index d8516fa35de17..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_enhanced.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_enhanced_enhanced" \
-    server_id="gatt_server_enhanced" \
-    client_id="gatt_client_enhanced" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_mixed.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_mixed.sh
deleted file mode 100755
index 4d82408fb9120..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_mixed.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_enhanced_mixed" \
-    server_id="gatt_server_enhanced" \
-    client_id="gatt_client_mixed" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_none.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_none.sh
deleted file mode 100755
index 13a4e67e1f0e7..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_none.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_enhanced_none" \
-    server_id="gatt_server_enhanced" \
-    client_id="gatt_client_none" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_unenhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_unenhanced.sh
deleted file mode 100755
index 480fbabf467df..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_enhanced_unenhanced.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_enhanced_unenhanced" \
-    server_id="gatt_server_enhanced" \
-    client_id="gatt_client_unenhanced" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_enhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_enhanced.sh
deleted file mode 100755
index 16827e3988bf1..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_enhanced.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_mixed_enhanced" \
-    server_id="gatt_server_mixed" \
-    client_id="gatt_client_enhanced" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_mixed.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_mixed.sh
deleted file mode 100755
index ed0a3e4f61e83..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_mixed.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_mixed_mixed" \
-    server_id="gatt_server_mixed" \
-    client_id="gatt_client_mixed" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_none.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_none.sh
deleted file mode 100755
index 944d91f575eed..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_none.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_mixed_none" \
-    server_id="gatt_server_mixed" \
-    client_id="gatt_client_none" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_unenhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_unenhanced.sh
deleted file mode 100755
index 25d0f9839451f..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_mixed_unenhanced.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_mixed_unenhanced" \
-    server_id="gatt_server_mixed" \
-    client_id="gatt_client_unenhanced" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_enhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_enhanced.sh
deleted file mode 100755
index 514b8508ea98f..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_enhanced.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_none_enhanced" \
-    server_id="gatt_server_none" \
-    client_id="gatt_client_enhanced" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_mixed.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_mixed.sh
deleted file mode 100755
index 7c74575a9f949..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_mixed.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_none_mixed" \
-    server_id="gatt_server_none" \
-    client_id="gatt_client_mixed" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_none.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_none.sh
deleted file mode 100755
index 1d988718f242c..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_none.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_none_none" \
-    server_id="gatt_server_none" \
-    client_id="gatt_client_none" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_unenhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_unenhanced.sh
deleted file mode 100755
index 9c8425e376f7e..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_none_unenhanced.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_none_unenhanced" \
-    server_id="gatt_server_none" \
-    client_id="gatt_client_unenhanced" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_enhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_enhanced.sh
deleted file mode 100755
index 4c7c499f166ff..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_enhanced.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_unenhanced_enhanced" \
-    server_id="gatt_server_unenhanced" \
-    client_id="gatt_client_enhanced" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_mixed.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_mixed.sh
deleted file mode 100755
index 4a0fdef0243c3..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_mixed.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_unenhanced_mixed" \
-    server_id="gatt_server_unenhanced" \
-    client_id="gatt_client_mixed" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_none.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_none.sh
deleted file mode 100755
index 5b705823e7245..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_none.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_unenhanced_none" \
-    server_id="gatt_server_unenhanced" \
-    client_id="gatt_client_none" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_unenhanced.sh b/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_unenhanced.sh
deleted file mode 100755
index 7da2f2ae39bb4..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify/test_scripts/gatt_notify_unenhanced_unenhanced.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-simulation_id="gatt_notify_unenhanced_unenhanced" \
-    server_id="gatt_server_unenhanced" \
-    client_id="gatt_client_unenhanced" \
-    $(dirname "${BASH_SOURCE[0]}")/_run_test.sh
diff --git a/tests/bsim/bluetooth/host/gatt/notify/testcase.yaml b/tests/bsim/bluetooth/host/gatt/notify/testcase.yaml
index b50aec3fb5da6..ba130572a8a6f 100644
--- a/tests/bsim/bluetooth/host/gatt/notify/testcase.yaml
+++ b/tests/bsim/bluetooth/host/gatt/notify/testcase.yaml
@@ -1,10 +1,115 @@
+common:
+  tags:
+    - bluetooth
+  platform_allow:
+    - nrf52_bsim/native
+  harness: bsim
+  timeout: 30
+  no_build: true
+  harness_config:
+    bsim_exe_name: tests_bsim_bluetooth_host_gatt_notify_prj_conf
+    bsim_verbosity: 2
+    bsim_sim_length: 60e6
+    bsim_options:
+      - -RealEncryption=1
+
 tests:
-  bluetooth.host.gatt.notify:
+  bluetooth.host.gatt.build_notify:
     build_only: true
-    tags:
-      - bluetooth
-    platform_allow:
-      - nrf52_bsim/native
-    harness: bsim
+    no_build: false
+
+  bluetooth.host.gatt.notify_enhanced_enhanced:
     harness_config:
-      bsim_exe_name: tests_bsim_bluetooth_host_gatt_notify_prj_conf
+      bsim_devices:
+        - test_id: gatt_client_enhanced
+        - test_id: gatt_server_enhanced
+
+  bluetooth.host.gatt.notify_enhanced_mixed:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_mixed
+        - test_id: gatt_server_enhanced
+
+  bluetooth.host.gatt.notify_enhanced_none:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_none
+        - test_id: gatt_server_enhanced
+
+  bluetooth.host.gatt.notify_enhanced_unenhanced:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_unenhanced
+        - test_id: gatt_server_enhanced
+
+  bluetooth.host.gatt.notify_mixed_enhanced:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_enhanced
+        - test_id: gatt_server_mixed
+
+  bluetooth.host.gatt.notify_mixed_mixed:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_mixed
+        - test_id: gatt_server_mixed
+
+  bluetooth.host.gatt.notify_mixed_none:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_none
+        - test_id: gatt_server_mixed
+
+  bluetooth.host.gatt.notify_mixed_unenhanced:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_unenhanced
+        - test_id: gatt_server_mixed
+
+  bluetooth.host.gatt.notify_none_enhanced:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_enhanced
+        - test_id: gatt_server_none
+
+  bluetooth.host.gatt.notify_none_mixed:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_mixed
+        - test_id: gatt_server_none
+
+  bluetooth.host.gatt.notify_none_none:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_none
+        - test_id: gatt_server_none
+
+  bluetooth.host.gatt.notify_none_unenhanced:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_unenhanced
+        - test_id: gatt_server_none
+
+  bluetooth.host.gatt.notify_unenhanced_enhanced:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_enhanced
+        - test_id: gatt_server_unenhanced
+
+  bluetooth.host.gatt.notify_unenhanced_mixed:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_mixed
+        - test_id: gatt_server_unenhanced
+
+  bluetooth.host.gatt.notify_unenhanced_none:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_none
+        - test_id: gatt_server_unenhanced
+
+  bluetooth.host.gatt.notify_unenhanced_unenhanced:
+    harness_config:
+      bsim_devices:
+        - test_id: gatt_client_unenhanced
+        - test_id: gatt_server_unenhanced
diff --git a/tests/bsim/bluetooth/host/gatt/notify_multiple/test_scripts/notify.sh b/tests/bsim/bluetooth/host/gatt/notify_multiple/test_scripts/notify.sh
deleted file mode 100755
index d89a5701fd998..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify_multiple/test_scripts/notify.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="notify_multiple"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_notify_multiple_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=gatt_client -RealEncryption=1
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_notify_multiple_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=gatt_server -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/notify_multiple/testcase.yaml b/tests/bsim/bluetooth/host/gatt/notify_multiple/testcase.yaml
index 3da3f5bcb662d..34919b14a7579 100644
--- a/tests/bsim/bluetooth/host/gatt/notify_multiple/testcase.yaml
+++ b/tests/bsim/bluetooth/host/gatt/notify_multiple/testcase.yaml
@@ -1,10 +1,17 @@
 tests:
   bluetooth.host.gatt.notify_multiple:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 120
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_gatt_notify_multiple_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_devices:
+        - test_id: gatt_client
+        - test_id: gatt_server
+      bsim_options:
+        - -RealEncryption=1
diff --git a/tests/bsim/bluetooth/host/gatt/notify_stress/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/gatt/notify_stress/test_scripts/run_test.sh
deleted file mode 100755
index 489bea278afd6..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/notify_stress/test_scripts/run_test.sh
+++ /dev/null
@@ -1,55 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2025 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-# Test purpose:
-#
-# Verify that the Central can receive 30 notifications from the Peripheral over all available EATT
-# channels.
-#
-# Note: The number of notifications and the size of the characteristic are chosen empirically.
-#
-# This test is designed to stress HCI driver to guarantee that no data is dropped between Host and
-# Controller. Specifically, the HCI IPC driver that tends to drop data when the Host is not able to
-# process it fast enough. The test is guaranteed to fail with Controller to Host HCI data flow
-# control being disabled.
-#
-# Test Setup:
-#
-# - Devices: Central and Peripheral
-# - Characteristic Length: Peripheral exposes a long characteristic (greater than 23 bytes).
-# - Connection: Central connects to Peripheral.
-# - Notification subscription: Central subscribes to notificaitons from the Peripheral.
-# - EATT Usage: EATT is enabled, and the maximum possible EATT channels are established to
-#   parallelize notifications as much as possible, increasing traffic towards Central.
-#
-# Test Steps:
-#
-# 1. The Peripheral sends 30 notifications to the Central over all available EATT channels.
-# 2. Upon receiving a notification, the Central holds the received notification callback for 1
-#    second before releasing it.
-# 3. The test passes if all 30 notifications are successfully sent by the Peripheral and received
-#    by the Central.
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-EXECUTE_TIMEOUT=150
-
-verbosity_level=2
-simulation_id="gatt_notify_enhanced_stress"
-server_id="gatt_server_enhanced_notif_stress"
-client_id="gatt_client_enhanced_notif_stress"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_notify_stress_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=${client_id} -RealEncryption=1
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_notify_stress_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=${server_id} -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=70e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/notify_stress/testcase.yaml b/tests/bsim/bluetooth/host/gatt/notify_stress/testcase.yaml
index ead6f5effdd89..4ef227d09371e 100644
--- a/tests/bsim/bluetooth/host/gatt/notify_stress/testcase.yaml
+++ b/tests/bsim/bluetooth/host/gatt/notify_stress/testcase.yaml
@@ -7,6 +7,14 @@ tests:
     platform_allow:
       - nrf52_bsim/native
       - nrf5340bsim/nrf5340/cpuapp
+    timeout: 150
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_gatt_notify_stress_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 70e6
+      bsim_devices:
+        - test_id: gatt_server_enhanced_notif_stress
+        - test_id: gatt_client_enhanced_notif_stress
+      bsim_options:
+        - -RealEncryption=1
diff --git a/tests/bsim/bluetooth/host/gatt/sc_indicate/test_scripts/sc_indicate.sh b/tests/bsim/bluetooth/host/gatt/sc_indicate/test_scripts/sc_indicate.sh
deleted file mode 100755
index 73ec66146aef5..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/sc_indicate/test_scripts/sc_indicate.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name='sc_indicate'
-test_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_gatt_${test_name}_prj_conf"
-simulation_id="${test_name}"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "./${test_exe}" \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
-
-Execute "./${test_exe}" \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/sc_indicate/testcase.yaml b/tests/bsim/bluetooth/host/gatt/sc_indicate/testcase.yaml
index 743c415080f80..81c41003cef75 100644
--- a/tests/bsim/bluetooth/host/gatt/sc_indicate/testcase.yaml
+++ b/tests/bsim/bluetooth/host/gatt/sc_indicate/testcase.yaml
@@ -1,10 +1,17 @@
 tests:
   bluetooth.host.gatt.sc_indicate:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_gatt_sc_indicate_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+      bsim_options:
+        - -RealEncryption=1
diff --git a/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings.sh b/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings.sh
deleted file mode 100755
index e6012eb616a5f..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings.sh
+++ /dev/null
@@ -1,47 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="settings"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-test_exe="./bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-# Remove the files used by the custom SETTINGS backend
-TO_DELETE="${simulation_id}_server.log ${simulation_id}_client.log"
-echo "remove settings files ${TO_DELETE}"
-rm ${TO_DELETE} || true
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}" -D=8 -sim_length=30e6 $@
-
-# Only one `server` device is really running at a time. This is a necessary hack
-# because bsim doesn't support plugging devices in and out of a running
-# simulation, but this test needs a way to power-cycle the `server` device a few
-# times.
-#
-# Each device will wait until the previous instance (called 'test round') has
-# finished executing before starting up.
-Execute "$test_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=0 -testid=server -RealEncryption=1 -argstest 0 6 "server"
-Execute "$test_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=1 -testid=server -RealEncryption=1 -argstest 1 6 "server"
-Execute "$test_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=2 -testid=server -RealEncryption=1 -argstest 2 6 "server"
-Execute "$test_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=3 -testid=server -RealEncryption=1 -argstest 3 6 "server"
-Execute "$test_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=4 -testid=server -RealEncryption=1 -argstest 4 6 "server"
-Execute "$test_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=5 -testid=server -RealEncryption=1 -argstest 5 6 "server"
-Execute "$test_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=6 -testid=server -RealEncryption=1 -argstest 6 6 "server"
-
-Execute "$test_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=7 -testid=client -RealEncryption=1 -argstest 0 0 "client"
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings_privacy.sh b/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings_privacy.sh
deleted file mode 100755
index 94e660dfecd5e..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/settings/test_scripts/run_gatt_settings_privacy.sh
+++ /dev/null
@@ -1,47 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="settings_privacy"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-test_priv_exe="./bs_${BOARD_TS}_$(guess_test_long_name)_overlay-privacy_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-# Remove the files used by the custom SETTINGS backend
-TO_DELETE="${simulation_id}_server_priv.log ${simulation_id}_client_priv.log"
-echo "remove settings files ${TO_DELETE}"
-rm ${TO_DELETE} || true
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}" -D=8 -sim_length=30e6 $@
-
-# Only one `server` device is really running at a time. This is a necessary hack
-# because bsim doesn't support plugging devices in and out of a running
-# simulation, but this test needs a way to power-cycle the `server` device a few
-# times.
-#
-# Each device will wait until the previous instance (called 'test round') has
-# finished executing before starting up.
-Execute "$test_priv_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=0 -testid=server -RealEncryption=1 -argstest 0 6 "server_priv"
-Execute "$test_priv_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=1 -testid=server -RealEncryption=1 -argstest 1 6 "server_priv"
-Execute "$test_priv_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=2 -testid=server -RealEncryption=1 -argstest 2 6 "server_priv"
-Execute "$test_priv_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=3 -testid=server -RealEncryption=1 -argstest 3 6 "server_priv"
-Execute "$test_priv_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=4 -testid=server -RealEncryption=1 -argstest 4 6 "server_priv"
-Execute "$test_priv_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=5 -testid=server -RealEncryption=1 -argstest 5 6 "server_priv"
-Execute "$test_priv_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=6 -testid=server -RealEncryption=1 -argstest 6 6 "server_priv"
-
-Execute "$test_priv_exe" -v=${verbosity_level} \
-    -s="${simulation_id}" -d=7 -testid=client -RealEncryption=1 -argstest 0 0 "client_priv"
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/settings/testcase.yaml b/tests/bsim/bluetooth/host/gatt/settings/testcase.yaml
index 8d8575b2c49e4..3aad1d2eef1c1 100644
--- a/tests/bsim/bluetooth/host/gatt/settings/testcase.yaml
+++ b/tests/bsim/bluetooth/host/gatt/settings/testcase.yaml
@@ -1,17 +1,106 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
   harness: bsim
+  timeout: 120
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 30e6
+    bsim_options:
+      - -RealEncryption=1
+      - -argstest
 
 tests:
   bluetooth.host.gatt.settings:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_gatt_settings_prj_conf
+      bsim_devices:
+        - test_id: client
+          options:
+            - '0'
+            - '0'
+            - 'client'
+        - test_id: server
+          options:
+            - '0'
+            - '6'
+            - 'server'
+        - test_id: server
+          options:
+            - '1'
+            - '6'
+            - 'server'
+        - test_id: server
+          options:
+            - '2'
+            - '6'
+            - 'server'
+        - test_id: server
+          options:
+            - '3'
+            - '6'
+            - 'server'
+        - test_id: server
+          options:
+            - '4'
+            - '6'
+            - 'server'
+        - test_id: server
+          options:
+            - '5'
+            - '6'
+            - 'server'
+        - test_id: server
+          options:
+            - '6'
+            - '6'
+            - 'server'
+
   bluetooth.host.gatt.settings_priv:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_gatt_settings_overlay-privacy_conf
+      bsim_devices:
+        - test_id: client
+          options:
+            - '0'
+            - '0'
+            - 'client_priv'
+        - test_id: server
+          options:
+            - '0'
+            - '6'
+            - 'server_priv'
+        - test_id: server
+          options:
+            - '1'
+            - '6'
+            - 'server_priv'
+        - test_id: server
+          options:
+            - '2'
+            - '6'
+            - 'server_priv'
+        - test_id: server
+          options:
+            - '3'
+            - '6'
+            - 'server_priv'
+        - test_id: server
+          options:
+            - '4'
+            - '6'
+            - 'server_priv'
+        - test_id: server
+          options:
+            - '5'
+            - '6'
+            - 'server_priv'
+        - test_id: server
+          options:
+            - '6'
+            - '6'
+            - 'server_priv'
     extra_args:
       EXTRA_CONF_FILE=overlay-privacy.conf
diff --git a/tests/bsim/bluetooth/host/gatt/settings_clear/test_scripts/run_settings_clear.sh b/tests/bsim/bluetooth/host/gatt/settings_clear/test_scripts/run_settings_clear.sh
deleted file mode 100755
index ed8d08e9e4fcc..0000000000000
--- a/tests/bsim/bluetooth/host/gatt/settings_clear/test_scripts/run_settings_clear.sh
+++ /dev/null
@@ -1,28 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2024 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name="$(guess_test_long_name)"
-simulation_id=${test_name}
-
-verbosity_level=2
-
-EXECUTE_TIMEOUT=120
-
-SIM_LEN_US=$((2 * 1000 * 1000))
-
-test_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=${SIM_LEN_US} $@
-
-Execute "${test_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -rs=420 -testid=server \
-    -RealEncryption=1
-Execute "${test_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -rs=69  -testid=client \
-    -RealEncryption=1
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/gatt/settings_clear/testcase.yaml b/tests/bsim/bluetooth/host/gatt/settings_clear/testcase.yaml
index 86d83e4412ca7..10f12661e0bdc 100644
--- a/tests/bsim/bluetooth/host/gatt/settings_clear/testcase.yaml
+++ b/tests/bsim/bluetooth/host/gatt/settings_clear/testcase.yaml
@@ -1,10 +1,17 @@
 tests:
   bluetooth.host.gatt.settings_clear:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
     harness: bsim
+    timeout: 120
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_gatt_settings_clear_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 10e6
+      bsim_devices:
+        - test_id: client
+        - test_id: server
+      bsim_options:
+        - -RealEncryption=1
diff --git a/tests/bsim/bluetooth/host/id/settings/test_scripts/settings.sh b/tests/bsim/bluetooth/host/id/settings/test_scripts/settings.sh
deleted file mode 100755
index ea9f7660887ae..0000000000000
--- a/tests/bsim/bluetooth/host/id/settings/test_scripts/settings.sh
+++ /dev/null
@@ -1,29 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_id_settings_prj_conf"
-simulation_id="id_settings"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "./${test_exe}" \
-  -v=${verbosity_level} -s="${simulation_id}_1" -d=0 -testid=dut1 \
-  -flash="${simulation_id}.log.bin"
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}_1" \
-  -D=1 -sim_length=60e6
-
-wait_for_background_jobs
-
-Execute "./${test_exe}" \
-  -v=${verbosity_level} -s="${simulation_id}_2" -d=0 -testid=dut2 \
-  -flash="${simulation_id}.log.bin" -flash_rm
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}_2" \
-  -D=1 -sim_length=60e6
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/id/settings/testcase.yaml b/tests/bsim/bluetooth/host/id/settings/testcase.yaml
index 0b9876bcf6e8b..fdca3635ae372 100644
--- a/tests/bsim/bluetooth/host/id/settings/testcase.yaml
+++ b/tests/bsim/bluetooth/host/id/settings/testcase.yaml
@@ -1,10 +1,31 @@
+common:
+  tags:
+    - bluetooth
+  platform_allow:
+    - nrf52_bsim/native
+  harness: bsim
+  timeout: 30
+  harness_config:
+    bsim_exe_name: tests_bsim_bluetooth_host_id_settings_prj_conf
+    bsim_verbosity: 2
+    bsim_sim_length: 60e6
+    bsim_options:
+      - -flash=id_settings.log.bin
+
 tests:
-  bluetooth.host.id.settings:
+  bluetooth.host.id.build_settings:
     build_only: true
-    tags:
-      - bluetooth
-    platform_allow:
-      - nrf52_bsim/native
-    harness: bsim
+
+  bluetooth.host.id.settings_dut2:
+    no_build: true
     harness_config:
-      bsim_exe_name: tests_bsim_bluetooth_host_id_settings_prj_conf
+      bsim_devices:
+        - test_id: dut2
+          options:
+            - -flash_rm
+
+  bluetooth.host.id.settings_dut1:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: dut1
diff --git a/tests/bsim/bluetooth/host/iso/bis/testcase.yaml b/tests/bsim/bluetooth/host/iso/bis/testcase.yaml
index d6bd7c9c21deb..eff8fdfb5b9c9 100644
--- a/tests/bsim/bluetooth/host/iso/bis/testcase.yaml
+++ b/tests/bsim/bluetooth/host/iso/bis/testcase.yaml
@@ -1,10 +1,29 @@
+common:
+  tags:
+    - bluetooth
+  platform_allow:
+    - nrf52_bsim/native
+  harness: bsim
+  timeout: 30
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 30e6
+    bsim_exe_name: tests_bsim_bluetooth_host_iso_bis_prj_conf
+
 tests:
-  bluetooth.host.iso.bis:
+  bluetooth.host.iso.build_bis:
     build_only: true
-    tags:
-      - bluetooth
-    platform_allow:
-      - nrf52_bsim/native
-    harness: bsim
+
+  bluetooth.host.iso.bis:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: broadcaster
+        - test_id: receiver
+
+  bluetooth.host.iso.bis_disable:
+    no_build: true
     harness_config:
-      bsim_exe_name: tests_bsim_bluetooth_host_iso_bis_prj_conf
+      bsim_devices:
+        - test_id: broadcaster_disable
+        - test_id: receiver
diff --git a/tests/bsim/bluetooth/host/iso/bis/tests_scripts/bis.sh b/tests/bsim/bluetooth/host/iso/bis/tests_scripts/bis.sh
deleted file mode 100755
index 18c76e299e37e..0000000000000
--- a/tests/bsim/bluetooth/host/iso/bis/tests_scripts/bis.sh
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="iso_bis"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_iso_bis_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=broadcaster
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_iso_bis_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=receiver
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/iso/bis/tests_scripts/bis_disable.sh b/tests/bsim/bluetooth/host/iso/bis/tests_scripts/bis_disable.sh
deleted file mode 100755
index 980af68ee6f04..0000000000000
--- a/tests/bsim/bluetooth/host/iso/bis/tests_scripts/bis_disable.sh
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="iso_bis_disable"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_iso_bis_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=broadcaster_disable
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_iso_bis_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=receiver
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/iso/cis/testcase.yaml b/tests/bsim/bluetooth/host/iso/cis/testcase.yaml
index 188e2d764c040..267d31f7f950b 100644
--- a/tests/bsim/bluetooth/host/iso/cis/testcase.yaml
+++ b/tests/bsim/bluetooth/host/iso/cis/testcase.yaml
@@ -1,10 +1,29 @@
+common:
+  tags:
+    - bluetooth
+  platform_allow:
+    - nrf52_bsim/native
+  harness: bsim
+  timeout: 120
+  harness_config:
+    bsim_exe_name: tests_bsim_bluetooth_host_iso_cis_prj_conf
+    bsim_verbosity: 2
+    bsim_sim_length: 30e6
+
 tests:
-  bluetooth.host.iso.cis:
+  bluetooth.host.iso.build_cis:
     build_only: true
-    tags:
-      - bluetooth
-    platform_allow:
-      - nrf52_bsim/native
-    harness: bsim
+
+  bluetooth.host.iso.cis:
+    no_build: true
+    harness_config:
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+
+  bluetooth.host.iso.cis_disable:
+    no_build: true
     harness_config:
-      bsim_exe_name: tests_bsim_bluetooth_host_iso_cis_prj_conf
+      bsim_devices:
+        - test_id: central_disable
+        - test_id: peripheral
diff --git a/tests/bsim/bluetooth/host/iso/cis/tests_scripts/cis.sh b/tests/bsim/bluetooth/host/iso/cis/tests_scripts/cis.sh
deleted file mode 100755
index b693f09456737..0000000000000
--- a/tests/bsim/bluetooth/host/iso/cis/tests_scripts/cis.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="iso_cis"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_iso_cis_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_iso_cis_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/iso/cis/tests_scripts/cis_disable.sh b/tests/bsim/bluetooth/host/iso/cis/tests_scripts/cis_disable.sh
deleted file mode 100755
index cb20190d668fb..0000000000000
--- a/tests/bsim/bluetooth/host/iso/cis/tests_scripts/cis_disable.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="iso_cis_disable"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_iso_cis_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central_disable
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_iso_cis_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/iso/frag/testcase.yaml b/tests/bsim/bluetooth/host/iso/frag/testcase.yaml
index eeaded9d10904..58b8bf0257219 100644
--- a/tests/bsim/bluetooth/host/iso/frag/testcase.yaml
+++ b/tests/bsim/bluetooth/host/iso/frag/testcase.yaml
@@ -1,10 +1,14 @@
 tests:
   bluetooth.host.iso.frag:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_iso_frag_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 30e6
+      bsim_devices:
+        - test_id: broadcaster
diff --git a/tests/bsim/bluetooth/host/iso/frag/tests_scripts/bis.sh b/tests/bsim/bluetooth/host/iso/frag/tests_scripts/bis.sh
deleted file mode 100755
index 5808c885310b3..0000000000000
--- a/tests/bsim/bluetooth/host/iso/frag/tests_scripts/bis.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="iso_frag"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=1 -sim_length=30e6 $@
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_iso_frag_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=broadcaster
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/iso/frag_2/testcase.yaml b/tests/bsim/bluetooth/host/iso/frag_2/testcase.yaml
index 27e7a9a9bf1fb..6ffac7bbd11b2 100644
--- a/tests/bsim/bluetooth/host/iso/frag_2/testcase.yaml
+++ b/tests/bsim/bluetooth/host/iso/frag_2/testcase.yaml
@@ -1,10 +1,14 @@
 tests:
   bluetooth.host.iso.frag_2:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_iso_frag_2_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 30e6
+      bsim_devices:
+        - test_id: broadcaster
diff --git a/tests/bsim/bluetooth/host/iso/frag_2/tests_scripts/bis.sh b/tests/bsim/bluetooth/host/iso/frag_2/tests_scripts/bis.sh
deleted file mode 100755
index c6307d3302713..0000000000000
--- a/tests/bsim/bluetooth/host/iso/frag_2/tests_scripts/bis.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="iso_frag_2"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=1 -sim_length=30e6 $@
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_iso_frag_2_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=broadcaster
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/credits/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/credits/testcase.yaml
index 4b7ef8127c584..87aa9716a194a 100644
--- a/tests/bsim/bluetooth/host/l2cap/credits/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/credits/testcase.yaml
@@ -1,16 +1,26 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
   harness: bsim
+  timeout: 30
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 30e6
 
 tests:
   bluetooth.host.l2cap.credits:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_credits_prj_conf
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+
   bluetooth.host.l2cap.credits_ecred:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_credits_prj_conf_overlay-ecred_conf
-    extra_args: EXTRA_CONF_FILE="overlay-ecred.conf"
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+    extra_args: EXTRA_CONF_FILE=overlay-ecred.conf
diff --git a/tests/bsim/bluetooth/host/l2cap/credits/tests_scripts/l2cap_credits.sh b/tests/bsim/bluetooth/host/l2cap/credits/tests_scripts/l2cap_credits.sh
deleted file mode 100755
index 5595dde430cd4..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/credits/tests_scripts/l2cap_credits.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-simulation_id=$(guess_test_long_name)
-bsim_exe=./bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -rs=420
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -rs=100
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/credits/tests_scripts/l2cap_credits_ecred.sh b/tests/bsim/bluetooth/host/l2cap/credits/tests_scripts/l2cap_credits_ecred.sh
deleted file mode 100755
index b58c32f6aab75..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/credits/tests_scripts/l2cap_credits_ecred.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-simulation_id=$(guess_test_long_name)_ecred
-bsim_exe=./bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf_overlay-ecred_conf
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -rs=420
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -rs=100
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/credits_seg_recv/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/credits_seg_recv/testcase.yaml
index 47ecd4484ab20..63422d97dd664 100644
--- a/tests/bsim/bluetooth/host/l2cap/credits_seg_recv/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/credits_seg_recv/testcase.yaml
@@ -1,16 +1,26 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
   harness: bsim
+  timeout: 30
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 30e6
 
 tests:
   bluetooth.host.l2cap.credits_seg_recv:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_credits_seg_recv_prj_conf
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+
   bluetooth.host.l2cap.credits_seg_recv_ecred:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_credits_seg_recv_prj_conf_overlay-ecred_conf
-    extra_args: EXTRA_CONF_FILE="overlay-ecred.conf"
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+    extra_args: EXTRA_CONF_FILE=overlay-ecred.conf
diff --git a/tests/bsim/bluetooth/host/l2cap/credits_seg_recv/tests_scripts/l2cap_credits_seg_recv.sh b/tests/bsim/bluetooth/host/l2cap/credits_seg_recv/tests_scripts/l2cap_credits_seg_recv.sh
deleted file mode 100755
index 5595dde430cd4..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/credits_seg_recv/tests_scripts/l2cap_credits_seg_recv.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-simulation_id=$(guess_test_long_name)
-bsim_exe=./bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -rs=420
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -rs=100
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/credits_seg_recv/tests_scripts/l2cap_credits_seg_recv_ecred.sh b/tests/bsim/bluetooth/host/l2cap/credits_seg_recv/tests_scripts/l2cap_credits_seg_recv_ecred.sh
deleted file mode 100755
index b58c32f6aab75..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/credits_seg_recv/tests_scripts/l2cap_credits_seg_recv_ecred.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2023 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-simulation_id=$(guess_test_long_name)_ecred
-bsim_exe=./bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf_overlay-ecred_conf
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -rs=420
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -rs=100
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/ecred/dut/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/ecred/dut/testcase.yaml
index b39bfa0e73dad..80ed65ff7410f 100644
--- a/tests/bsim/bluetooth/host/l2cap/ecred/dut/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/ecred/dut/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.l2cap.ecred.dut:
+  bluetooth.host.l2cap.ecred.build_dut:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/l2cap/ecred/peer/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/ecred/peer/testcase.yaml
index ee61e8ce24653..aa11b4ddcb4a5 100644
--- a/tests/bsim/bluetooth/host/l2cap/ecred/peer/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/ecred/peer/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.l2cap.ecred.peer:
+  bluetooth.host.l2cap.ecred.build_peer:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/l2cap/ecred/test_scripts/run.sh b/tests/bsim/bluetooth/host/l2cap/ecred/test_scripts/run.sh
deleted file mode 100755
index 43ac0f88e659b..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/ecred/test_scripts/run.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name="$(guess_test_long_name)"
-
-simulation_id=${test_name}
-verbosity_level=2
-
-SIM_LEN_US=$((1 * 1000 * 1000))
-
-dut_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_dut_prj_conf"
-peer_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_peer_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${dut_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -rs=420 -testid=dut
-Execute "${peer_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -rs=69  -testid=peer
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=${SIM_LEN_US} $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/ecred/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/ecred/testcase.yaml
new file mode 100644
index 0000000000000..088c032648677
--- /dev/null
+++ b/tests/bsim/bluetooth/host/l2cap/ecred/testcase.yaml
@@ -0,0 +1,17 @@
+tests:
+  bluetooth.host.l2cap.ecred.peer:
+    no_build: true
+    tags:
+      - bluetooth
+    platform_allow:
+      - nrf52_bsim/native
+    timeout: 30
+    harness: bsim
+    harness_config:
+      bsim_verbosity: 2
+      bsim_sim_length: 10e6
+      bsim_devices:
+        - test_id: dut
+          exe: tests_bsim_bluetooth_host_l2cap_ecred_dut_prj_conf
+        - test_id: peer
+          exe: tests_bsim_bluetooth_host_l2cap_ecred_peer_prj_conf
diff --git a/tests/bsim/bluetooth/host/l2cap/einprogress/test_scripts/run.sh b/tests/bsim/bluetooth/host/l2cap/einprogress/test_scripts/run.sh
deleted file mode 100755
index b86db52d9dfc0..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/einprogress/test_scripts/run.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name="$(guess_test_long_name)"
-simulation_id=${test_name}
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-SIM_LEN_US=$((2 * 1000 * 1000))
-
-test_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${test_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 \
-    -testid=l2cap/einprogress/dut
-Execute "${test_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 \
-    -testid=l2cap/einprogress/tester
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=${SIM_LEN_US} $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/einprogress/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/einprogress/testcase.yaml
index 1fb1c7906842c..bfd4b46acf14b 100644
--- a/tests/bsim/bluetooth/host/l2cap/einprogress/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/einprogress/testcase.yaml
@@ -1,10 +1,15 @@
 tests:
   bluetooth.host.l2cap.einprogress:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 120
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_einprogress_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 10e6
+      bsim_devices:
+        - test_id: l2cap/einprogress/dut
+        - test_id: l2cap/einprogress/tester
diff --git a/tests/bsim/bluetooth/host/l2cap/general/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/general/testcase.yaml
index 16fece81fb5a9..9d702041b490b 100644
--- a/tests/bsim/bluetooth/host/l2cap/general/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/general/testcase.yaml
@@ -1,10 +1,15 @@
 tests:
   bluetooth.host.l2cap.general:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 120
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_general_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
diff --git a/tests/bsim/bluetooth/host/l2cap/general/tests_scripts/l2cap.sh b/tests/bsim/bluetooth/host/l2cap/general/tests_scripts/l2cap.sh
deleted file mode 100755
index 3784ccfa1e0cc..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/general/tests_scripts/l2cap.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2022 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-# EATT test
-simulation_id="l2cap_ecred"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_l2cap_general_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -rs=43
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_l2cap_general_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -rs=42
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/many_conns/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/many_conns/testcase.yaml
index 4ed273d8e477c..5837a704d7374 100644
--- a/tests/bsim/bluetooth/host/l2cap/many_conns/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/many_conns/testcase.yaml
@@ -1,10 +1,18 @@
 tests:
   bluetooth.host.l2cap.many_conns:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_many_conns_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 10e6
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+        - test_id: peripheral
+        - test_id: peripheral
+        - test_id: peripheral
diff --git a/tests/bsim/bluetooth/host/l2cap/many_conns/tests_scripts/l2cap.sh b/tests/bsim/bluetooth/host/l2cap/many_conns/tests_scripts/l2cap.sh
deleted file mode 100755
index ee3c308f57437..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/many_conns/tests_scripts/l2cap.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="l2cap_many_conns"
-
-bsim_exe=./bs_${BOARD_TS}_tests_bsim_bluetooth_host_l2cap_many_conns_prj_conf
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${bsim_exe}" -s=${simulation_id} -d=0 -testid=central -rs=42
-
-Execute "${bsim_exe}" -s=${simulation_id} -d=1 -testid=peripheral -rs=1
-Execute "${bsim_exe}" -s=${simulation_id} -d=2 -testid=peripheral -rs=2
-Execute "${bsim_exe}" -s=${simulation_id} -d=3 -testid=peripheral -rs=3
-Execute "${bsim_exe}" -s=${simulation_id} -d=4 -testid=peripheral -rs=4
-
-Execute ./bs_2G4_phy_v1 -s=${simulation_id} -D=5 -sim_length=10e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/multilink_peripheral/test_scripts/run.sh b/tests/bsim/bluetooth/host/l2cap/multilink_peripheral/test_scripts/run.sh
deleted file mode 100755
index 1e4752d2c4aea..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/multilink_peripheral/test_scripts/run.sh
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name="$(guess_test_long_name)"
-
-simulation_id=${test_name}
-
-SIM_LEN_US=$((40 * 1000 * 1000))
-
-test_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 -dump_imm -s=${simulation_id} -D=3 -sim_length=${SIM_LEN_US} $@
-
-Execute "${test_exe}" -s=${simulation_id} -d=0 -rs=420 -RealEncryption=1 -testid=dut
-
-# Start centrals with an offset, so the CONN_IND packets don't clash on-air.
-# Since code executes in zero-time, this will always happen if we don't stagger
-# the connection creation somehow.
-Execute "${test_exe}" -s=${simulation_id} \
-    -d=1 -rs=169 -RealEncryption=1 -testid=central -delay_init -start_offset=1e3
-Execute "${test_exe}" -s=${simulation_id} \
-    -d=2 -rs=690 -RealEncryption=1 -testid=central -delay_init -start_offset=10e3
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/multilink_peripheral/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/multilink_peripheral/testcase.yaml
index 178daf75091e0..2c030e752698d 100644
--- a/tests/bsim/bluetooth/host/l2cap/multilink_peripheral/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/multilink_peripheral/testcase.yaml
@@ -1,10 +1,24 @@
 tests:
   bluetooth.host.l2cap.multilink_peripheral:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_multilink_peripheral_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 40e6
+      bsim_devices:
+        - test_id: dut
+        - test_id: central
+          options:
+            - -delay_init
+            - -start_offset=1e3
+        - test_id: cenrtal
+          options:
+            - -delay_init
+            - -start_offset=10e3
+      bsim_options:
+        - -RealEncryption=1
diff --git a/tests/bsim/bluetooth/host/l2cap/reassembly/dut/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/reassembly/dut/testcase.yaml
index 523e13549f6d9..0a6c6a45ed547 100644
--- a/tests/bsim/bluetooth/host/l2cap/reassembly/dut/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/reassembly/dut/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.l2cap.reassembly.dut:
+  bluetooth.host.l2cap.reassembly.build_dut:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/l2cap/reassembly/peer/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/reassembly/peer/testcase.yaml
index 809d15fa87ae7..036da17914ee0 100644
--- a/tests/bsim/bluetooth/host/l2cap/reassembly/peer/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/reassembly/peer/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.l2cap.reassembly.peer:
+  bluetooth.host.l2cap.reassembly.build_peer:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/l2cap/reassembly/test_scripts/run.sh b/tests/bsim/bluetooth/host/l2cap/reassembly/test_scripts/run.sh
deleted file mode 100755
index 8a50896d8d525..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/reassembly/test_scripts/run.sh
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name="$(guess_test_long_name)"
-simulation_id=${test_name}
-
-verbosity_level=2
-
-# Ten-second (maximum) sim time.
-# The test will exit simulation as soon as it has passed.
-SIM_LEN_US=$((10 * 1000 * 1000))
-
-dut_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_dut_prj_conf"
-peer_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_peer_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=${SIM_LEN_US} $@
-
-Execute "${peer_exe}" -v=${verbosity_level} -s=${simulation_id} \
-    -d=1 -rs=69 -testid=peer
-
-Execute "${dut_exe}" -v=${verbosity_level} -s=${simulation_id} \
-    -d=0 -rs=420 -testid=dut -argstest log_level 3
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/reassembly/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/reassembly/testcase.yaml
new file mode 100644
index 0000000000000..257c289b17389
--- /dev/null
+++ b/tests/bsim/bluetooth/host/l2cap/reassembly/testcase.yaml
@@ -0,0 +1,21 @@
+tests:
+  bluetooth.host.l2cap.reassembly.test:
+    no_build: true
+    tags:
+      - bluetooth
+    platform_allow:
+      - nrf52_bsim/native
+    timeout: 30
+    harness: bsim
+    harness_config:
+      bsim_verbosity: 2
+      bsim_sim_length: 10e6
+      bsim_devices:
+        - test_id: dut
+          exe: tests_bsim_bluetooth_host_l2cap_reassembly_dut_prj_conf
+          options:
+            - -argstest
+            - log_level
+            - '3'
+        - test_id: peer
+          exe: tests_bsim_bluetooth_host_l2cap_reassembly_peer_prj_conf
diff --git a/tests/bsim/bluetooth/host/l2cap/send_on_connect/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/send_on_connect/testcase.yaml
index 36ee2712a43d7..749e2c4576a94 100644
--- a/tests/bsim/bluetooth/host/l2cap/send_on_connect/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/send_on_connect/testcase.yaml
@@ -1,18 +1,28 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
     - nrf5340bsim/nrf5340/cpunet
+  timeout: 120
   harness: bsim
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 30e6
 
 tests:
   bluetooth.host.l2cap.send_on_connect:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_send_on_connect_prj_conf
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+
   bluetooth.host.l2cap.send_on_connect_ecred:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_send_on_connect_prj_conf_overlay-ecred_conf
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
     extra_args:
       EXTRA_CONF_FILE=overlay-ecred.conf
diff --git a/tests/bsim/bluetooth/host/l2cap/send_on_connect/tests_scripts/l2cap.sh b/tests/bsim/bluetooth/host/l2cap/send_on_connect/tests_scripts/l2cap.sh
deleted file mode 100755
index d7b8abd67ca94..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/send_on_connect/tests_scripts/l2cap.sh
+++ /dev/null
@@ -1,39 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2022 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="l2cap_send_on_connect"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_l2cap_send_on_connect_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_l2cap_send_on_connect_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
-
-simulation_id="l2cap_send_on_connect_ecred"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute \
-    ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_l2cap_send_on_connect_prj_conf_overlay-ecred_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central
-
-Execute \
-    ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_l2cap_send_on_connect_prj_conf_overlay-ecred_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/split/dut/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/split/dut/testcase.yaml
index 29005c8fb7144..559df7bfc55d5 100644
--- a/tests/bsim/bluetooth/host/l2cap/split/dut/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/split/dut/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.l2cap.split.dut:
+  bluetooth.host.l2cap.split.build_dut:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/l2cap/split/test_scripts/l2cap_split.sh b/tests/bsim/bluetooth/host/l2cap/split/test_scripts/l2cap_split.sh
deleted file mode 100755
index fe3c34950252a..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/split/test_scripts/l2cap_split.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-dut_exe="bs_${BOARD_TS}_$(guess_test_long_name)_dut_prj_conf"
-tester_exe="bs_${BOARD_TS}_$(guess_test_long_name)_tester_prj_conf"
-
-simulation_id="l2cap_split"
-verbosity_level=2
-sim_length_us=30e6
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 \
-    -v=${verbosity_level} -s="${simulation_id}" -D=2 -sim_length=${sim_length_us} $@
-Execute "./$dut_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=0 -testid=test_0 -RealEncryption=1
-Execute "./$tester_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=1 -testid=test_0 -RealEncryption=1
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/split/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/split/testcase.yaml
new file mode 100644
index 0000000000000..042b565dad4e9
--- /dev/null
+++ b/tests/bsim/bluetooth/host/l2cap/split/testcase.yaml
@@ -0,0 +1,19 @@
+tests:
+  bluetooth.host.l2cap.split.test:
+    no_build: true
+    tags:
+      - bluetooth
+    platform_allow:
+      - nrf52_bsim/native
+    timeout: 30
+    harness: bsim
+    harness_config:
+      bsim_verbosity: 2
+      bsim_sim_length: 30e6
+      bsim_devices:
+        - test_id: test_0
+          exe: tests_bsim_bluetooth_host_l2cap_split_dut_prj_conf
+        - test_id: test_0
+          exe: tests_bsim_bluetooth_host_l2cap_split_tester_prj_conf
+      bsim_options:
+        - -RealEncryption=1
diff --git a/tests/bsim/bluetooth/host/l2cap/split/tester/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/split/tester/testcase.yaml
index 37557f4faeab6..5cb26eb4c9369 100644
--- a/tests/bsim/bluetooth/host/l2cap/split/tester/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/split/tester/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.l2cap.split.tester:
+  bluetooth.host.l2cap.split.build_tester:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/l2cap/stress/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/stress/testcase.yaml
index f872f5873dae8..a5250d36b93d5 100644
--- a/tests/bsim/bluetooth/host/l2cap/stress/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/stress/testcase.yaml
@@ -1,20 +1,33 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
+  timeout: 240
   harness: bsim
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 400e6
+    bsim_devices:
+      - test_id: central
+      - test_id: peripheral
+      - test_id: peripheral
+      - test_id: peripheral
+      - test_id: peripheral
+      - test_id: peripheral
+      - test_id: peripheral
 
 tests:
   bluetooth.host.l2cap.stress:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_stress_prj_conf
+
   bluetooth.host.l2cap.stress_nofrag:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_stress_prj_conf_overlay-nofrag_conf
-    extra_args: EXTRA_CONF_FILE="overlay-nofrag.conf"
+    extra_args: EXTRA_CONF_FILE=overlay-nofrag.conf
+
   bluetooth.host.l2cap.stress_syswq:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_stress_prj_conf_overlay-syswq_conf
-    extra_args: EXTRA_CONF_FILE="overlay-syswq.conf"
+    extra_args: EXTRA_CONF_FILE=overlay-syswq.conf
diff --git a/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap.sh b/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap.sh
deleted file mode 100755
index 975a5abd232c8..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2022 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-# EATT test
-simulation_id="l2cap_stress"
-verbosity_level=2
-EXECUTE_TIMEOUT=240
-
-bsim_exe=./bs_${BOARD_TS}_tests_bsim_bluetooth_host_l2cap_stress_prj_conf
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -rs=43
-
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -rs=42
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=2 -testid=peripheral -rs=10
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=3 -testid=peripheral -rs=23
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=4 -testid=peripheral -rs=7884
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=5 -testid=peripheral -rs=230
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=6 -testid=peripheral -rs=9
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=7 -sim_length=400e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap_nofrag.sh b/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap_nofrag.sh
deleted file mode 100755
index 7183d4b016319..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap_nofrag.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2022 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-# EATT test
-simulation_id="l2cap_stress_nofrag"
-verbosity_level=2
-EXECUTE_TIMEOUT=240
-
-bsim_exe=./bs_${BOARD_TS}_tests_bsim_bluetooth_host_l2cap_stress_prj_conf_overlay-nofrag_conf
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -rs=43
-
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -rs=42
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=2 -testid=peripheral -rs=10
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=3 -testid=peripheral -rs=23
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=4 -testid=peripheral -rs=7884
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=5 -testid=peripheral -rs=230
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=6 -testid=peripheral -rs=9
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=7 -sim_length=400e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap_syswq.sh b/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap_syswq.sh
deleted file mode 100755
index 57fcf1747b689..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/stress/tests_scripts/l2cap_syswq.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2022 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-# EATT test
-simulation_id="l2cap_stress_syswq"
-verbosity_level=2
-EXECUTE_TIMEOUT=240
-
-bsim_exe=./bs_${BOARD_TS}_tests_bsim_bluetooth_host_l2cap_stress_prj_conf_overlay-syswq_conf
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -rs=43
-
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -rs=42
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=2 -testid=peripheral -rs=10
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=3 -testid=peripheral -rs=23
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=4 -testid=peripheral -rs=7884
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=5 -testid=peripheral -rs=230
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=6 -testid=peripheral -rs=9
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=7 -sim_length=400e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/l2cap/userdata/testcase.yaml b/tests/bsim/bluetooth/host/l2cap/userdata/testcase.yaml
index e07a92386497b..bf84e47abc128 100644
--- a/tests/bsim/bluetooth/host/l2cap/userdata/testcase.yaml
+++ b/tests/bsim/bluetooth/host/l2cap/userdata/testcase.yaml
@@ -1,10 +1,15 @@
 tests:
   bluetooth.host.l2cap.userdata:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 120
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_l2cap_userdata_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 5e6
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
diff --git a/tests/bsim/bluetooth/host/l2cap/userdata/tests_scripts/l2cap.sh b/tests/bsim/bluetooth/host/l2cap/userdata/tests_scripts/l2cap.sh
deleted file mode 100755
index e5bcdd078c0d9..0000000000000
--- a/tests/bsim/bluetooth/host/l2cap/userdata/tests_scripts/l2cap.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2022 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="l2cap_ecred_userdata"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_l2cap_userdata_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_l2cap_userdata_prj_conf \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=5e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/misc/acl_tx_frag/test_scripts/run.sh b/tests/bsim/bluetooth/host/misc/acl_tx_frag/test_scripts/run.sh
deleted file mode 100755
index e742f59b18f00..0000000000000
--- a/tests/bsim/bluetooth/host/misc/acl_tx_frag/test_scripts/run.sh
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name="$(guess_test_long_name)"
-simulation_id=${test_name}
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-# sixty-second (maximum) sim time.
-# The test will exit simulation as soon as it has passed.
-SIM_LEN_US=$((60 * 1000 * 1000))
-
-test_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${test_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -rs=420 -testid=dut \
-		-argstest log_level 3
-Execute "${test_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -rs=69  -testid=peer \
-		-argstest log_level 3 >/dev/null
-
-Execute ./bs_2G4_phy_v1 -defmodem=BLE_simple \
-    -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=${SIM_LEN_US} $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/misc/acl_tx_frag/testcase.yaml b/tests/bsim/bluetooth/host/misc/acl_tx_frag/testcase.yaml
index 5ea6173ebd482..b96564e5f9aa5 100644
--- a/tests/bsim/bluetooth/host/misc/acl_tx_frag/testcase.yaml
+++ b/tests/bsim/bluetooth/host/misc/acl_tx_frag/testcase.yaml
@@ -1,10 +1,21 @@
 tests:
   bluetooth.host.mics.acl_tx_frag:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 120
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_misc_acl_tx_frag_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_devices:
+        - test_id: dut
+        - test_id: peer
+      bsim_options:
+        - -argstest
+        - log_level
+        - '3'
+      bsim_phy_options:
+        - -defmodem=BLE_simple
diff --git a/tests/bsim/bluetooth/host/misc/conn_stress/central/testcase.yaml b/tests/bsim/bluetooth/host/misc/conn_stress/central/testcase.yaml
index b9f979a22ea82..5d4bc550e154a 100644
--- a/tests/bsim/bluetooth/host/misc/conn_stress/central/testcase.yaml
+++ b/tests/bsim/bluetooth/host/misc/conn_stress/central/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.misc.conn_stress.central:
+  bluetooth.host.misc.conn_stress.build_central:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/misc/conn_stress/peripheral/testcase.yaml b/tests/bsim/bluetooth/host/misc/conn_stress/peripheral/testcase.yaml
index db3c539ffae44..4d48fffa458d1 100644
--- a/tests/bsim/bluetooth/host/misc/conn_stress/peripheral/testcase.yaml
+++ b/tests/bsim/bluetooth/host/misc/conn_stress/peripheral/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.misc.conn_stress.peripheral:
+  bluetooth.host.misc.conn_stress.build_peripheral:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/misc/disable/testcase.yaml b/tests/bsim/bluetooth/host/misc/disable/testcase.yaml
index a4ef16acb14f8..06fabbd7d95cb 100644
--- a/tests/bsim/bluetooth/host/misc/disable/testcase.yaml
+++ b/tests/bsim/bluetooth/host/misc/disable/testcase.yaml
@@ -1,11 +1,37 @@
+common:
+  tags:
+    - bluetooth
+  platform_allow:
+    - nrf52_bsim/native
+    - nrf5340bsim/nrf5340/cpunet
+  timeout: 120
+  harness: bsim
+  harness_config:
+    bsim_exe_name: tests_bsim_bluetooth_host_misc_disable_prj_conf
+    bsim_verbosity: 2
+
 tests:
-  bluetooth.host.mics.disable:
+  bluetooth.host.mics.build_disable:
     build_only: true
-    tags:
-      - bluetooth
-    platform_allow:
-      - nrf52_bsim/native
-      - nrf5340bsim/nrf5340/cpunet
-    harness: bsim
+
+  bluetooth.host.mics.disable:
+    no_build: true
+    harness_config:
+      bsim_sim_length: 60e6
+      bsim_devices:
+        - test_id: disable
+
+  bluetooth.host.mics.disable_with_gatt:
+    no_build: true
+    harness_config:
+      bsim_sim_length: 600e6
+      bsim_devices:
+        - test_id: gatt_client
+        - test_id: gatt_server
+
+  bluetooth.host.mics.disable_set_default_id:
+    no_build: true
     harness_config:
-      bsim_exe_name: tests_bsim_bluetooth_host_misc_disable_prj_conf
+      bsim_sim_length: 10e6
+      bsim_devices:
+        - test_id: disable_set_default_id
diff --git a/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable.sh b/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable.sh
deleted file mode 100755
index 0be9af35e7a71..0000000000000
--- a/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2022 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-# Disable test: bt_enable and bt_disable are called in a loop.
-simulation_id="disable_test"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_misc_disable_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=disable
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=1 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable_set_default_id.sh b/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable_set_default_id.sh
deleted file mode 100755
index 437dcdff139af..0000000000000
--- a/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable_set_default_id.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2022 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-# Disable test: bt_enable and bt_disable are called in a loop.
-# Each iteration the default ID is updated
-simulation_id="disable_test_set_default_id"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_misc_disable_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=disable_set_default_id
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=1 -sim_length=10e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable_with_gatt.sh b/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable_with_gatt.sh
deleted file mode 100755
index f81a8fe6e4d12..0000000000000
--- a/tests/bsim/bluetooth/host/misc/disable/tests_scripts/disable_with_gatt.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-# Disable with GATT test: A central acting as a GATT client scans for and connects
-# to a peripheral acting as a GATT server. The GATT client will then attempt
-# to write and read to and from a few GATT characteristics. Both the central and
-# peripheral then disable bluetooth and the test repeats.
-simulation_id="disable_with_gatt"
-verbosity_level=2
-EXECUTE_TIMEOUT=120
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_misc_disable_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=gatt_client
-
-Execute ./bs_${BOARD_TS}_tests_bsim_bluetooth_host_misc_disable_prj_conf \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=gatt_server
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=600e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/misc/disconnect/dut/testcase.yaml b/tests/bsim/bluetooth/host/misc/disconnect/dut/testcase.yaml
index c778299fd775c..43fc6d6b3c51f 100644
--- a/tests/bsim/bluetooth/host/misc/disconnect/dut/testcase.yaml
+++ b/tests/bsim/bluetooth/host/misc/disconnect/dut/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.misc.disconnect.dut:
+  bluetooth.host.misc.disconnect.build_dut:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/misc/disconnect/test_scripts/disconnect.sh b/tests/bsim/bluetooth/host/misc/disconnect/test_scripts/disconnect.sh
deleted file mode 100755
index ada291fa88aa3..0000000000000
--- a/tests/bsim/bluetooth/host/misc/disconnect/test_scripts/disconnect.sh
+++ /dev/null
@@ -1,47 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-dut_exe="bs_${BOARD_TS}_$(guess_test_long_name)_dut_prj_conf"
-tester_exe="bs_${BOARD_TS}_$(guess_test_long_name)_tester_prj_conf"
-
-simulation_id="misc_disconnect"
-verbosity_level=2
-sim_length_us=10e6
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 \
-    -v=${verbosity_level} -s="${simulation_id}" -D=2 -sim_length=${sim_length_us} $@
-
-Execute "./$tester_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=1 -testid=tester -RealEncryption=0 -rs=100
-
-Execute "./$dut_exe" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=0 -testid=dut -RealEncryption=0
-
-# wait_for_background_jobs, but doesn't exit on error
-exit_code=0
-for process_id in $_process_ids; do
-wait $process_id || let "exit_code=$?"
-done
-
-# Make pcaps
-for j in {0..1}; do
-    i=$(printf '%02i' $j)
-
-    ${BSIM_OUT_PATH}/components/ext_2G4_phy_v1/dump_post_process/csv2pcap -o \
-    ${BSIM_OUT_PATH}/results/${simulation_id}/Trace_$i.Tx.pcap \
-    ${BSIM_OUT_PATH}/results/${simulation_id}/d_2G4_$i.Tx.csv
-
-    ${BSIM_OUT_PATH}/components/ext_2G4_phy_v1/dump_post_process/csv2pcap -o \
-    ${BSIM_OUT_PATH}/results/${simulation_id}/Trace_$i.Rx.pcap \
-    ${BSIM_OUT_PATH}/results/${simulation_id}/d_2G4_$i.Rx.csv
-
-    echo "${BSIM_OUT_PATH}/results/${simulation_id}/Trace_$i.Tx.pcap"
-    echo "${BSIM_OUT_PATH}/results/${simulation_id}/Trace_$i.Rx.pcap"
-done
-
-exit $exit_code
diff --git a/tests/bsim/bluetooth/host/misc/disconnect/testcase.yaml b/tests/bsim/bluetooth/host/misc/disconnect/testcase.yaml
new file mode 100644
index 0000000000000..ab15352fb183c
--- /dev/null
+++ b/tests/bsim/bluetooth/host/misc/disconnect/testcase.yaml
@@ -0,0 +1,19 @@
+tests:
+  bluetooth.host.misc.disconnect.test:
+    no_build: true
+    tags:
+      - bluetooth
+    platform_allow:
+      - nrf52_bsim/native
+    timeout: 30
+    harness: bsim
+    harness_config:
+      bsim_verbosity: 2
+      bsim_sim_length: 10e6
+      bsim_devices:
+        - test_id: dut
+          exe: tests_bsim_bluetooth_host_misc_disconnect_dut_prj_conf
+        - test_id: tester
+          exe: tests_bsim_bluetooth_host_misc_disconnect_tester_prj_conf
+      bsim_options:
+        - -RealEncryption=0
diff --git a/tests/bsim/bluetooth/host/misc/disconnect/tester/testcase.yaml b/tests/bsim/bluetooth/host/misc/disconnect/tester/testcase.yaml
index 337d4f9829e7e..993550aeb725c 100644
--- a/tests/bsim/bluetooth/host/misc/disconnect/tester/testcase.yaml
+++ b/tests/bsim/bluetooth/host/misc/disconnect/tester/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.misc.disconnect.tester:
+  bluetooth.host.misc.disconnect.build_tester:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/misc/hfc/test_scripts/run.sh b/tests/bsim/bluetooth/host/misc/hfc/test_scripts/run.sh
deleted file mode 100755
index cc5eef568b2b1..0000000000000
--- a/tests/bsim/bluetooth/host/misc/hfc/test_scripts/run.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="misc_hfc"
-verbosity_level=2
-EXECUTE_TIMEOUT=240
-
-cd ${BSIM_OUT_PATH}/bin
-
-bsim_exe=./bs_${BOARD_TS}_tests_bsim_bluetooth_host_misc_hfc_prj_conf
-
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=dut -rs=420
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peer -rs=69
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/misc/hfc/testcase.yaml b/tests/bsim/bluetooth/host/misc/hfc/testcase.yaml
index b8d24f8d18f26..a714a62e6e1d3 100644
--- a/tests/bsim/bluetooth/host/misc/hfc/testcase.yaml
+++ b/tests/bsim/bluetooth/host/misc/hfc/testcase.yaml
@@ -1,10 +1,15 @@
 tests:
   bluetooth.host.mics.hfc:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 240
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_misc_hfc_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_devices:
+        - test_id: dut
+        - test_id: peer
diff --git a/tests/bsim/bluetooth/host/misc/hfc_multilink/dut/testcase.yaml b/tests/bsim/bluetooth/host/misc/hfc_multilink/dut/testcase.yaml
index 2cb24db1258aa..9666e79d52433 100644
--- a/tests/bsim/bluetooth/host/misc/hfc_multilink/dut/testcase.yaml
+++ b/tests/bsim/bluetooth/host/misc/hfc_multilink/dut/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.misc.hfc_multilink.dut:
+  bluetooth.host.misc.hfc_multilink.build_dut:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/misc/hfc_multilink/test_scripts/run.sh b/tests/bsim/bluetooth/host/misc/hfc_multilink/test_scripts/run.sh
deleted file mode 100755
index c71b125d52589..0000000000000
--- a/tests/bsim/bluetooth/host/misc/hfc_multilink/test_scripts/run.sh
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name="$(guess_test_long_name)"
-
-simulation_id=${test_name}
-verbosity_level=2
-
-# Simulated test runtime (as seen by Zephyr and the PHY)
-# The test will be terminated much earlier if it passes
-SIM_LEN_US=$((10 * 1000 * 1000))
-
-tester_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_tester_prj_conf"
-dut_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_dut_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=4 -sim_length=${SIM_LEN_US} $@
-
-Execute "${dut_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -rs=420 -testid=dut
-
-Execute "${tester_exe}" -s=${simulation_id} -d=1 -rs=100 -testid=tester
-Execute "${tester_exe}" -s=${simulation_id} -d=2 -rs=200 -testid=tester
-Execute "${tester_exe}" -s=${simulation_id} -d=3 -rs=300 -testid=tester
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/misc/hfc_multilink/testcase.yaml b/tests/bsim/bluetooth/host/misc/hfc_multilink/testcase.yaml
new file mode 100644
index 0000000000000..c0c314bf7464d
--- /dev/null
+++ b/tests/bsim/bluetooth/host/misc/hfc_multilink/testcase.yaml
@@ -0,0 +1,21 @@
+tests:
+  bluetooth.host.misc.hfc_multilink.test:
+    no_build: true
+    tags:
+      - bluetooth
+    platform_allow:
+      - nrf52_bsim/native
+    timeout: 30
+    harness: bsim
+    harness_config:
+      bsim_verbosity: 2
+      bsim_sim_length: 10e6
+      bsim_devices:
+        - test_id: dut
+          exe: tests_bsim_bluetooth_host_misc_hfc_multilink_dut_prj_conf
+        - test_id: tester
+          exe: tests_bsim_bluetooth_host_misc_hfc_multilink_tester_prj_conf
+        - test_id: tester
+          exe: tests_bsim_bluetooth_host_misc_hfc_multilink_tester_prj_conf
+        - test_id: tester
+          exe: tests_bsim_bluetooth_host_misc_hfc_multilink_tester_prj_conf
diff --git a/tests/bsim/bluetooth/host/misc/hfc_multilink/tester/testcase.yaml b/tests/bsim/bluetooth/host/misc/hfc_multilink/tester/testcase.yaml
index b9dd7b87913e3..5e52bfd8a7116 100644
--- a/tests/bsim/bluetooth/host/misc/hfc_multilink/tester/testcase.yaml
+++ b/tests/bsim/bluetooth/host/misc/hfc_multilink/tester/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.misc.hfc_multilink.tester:
+  bluetooth.host.misc.hfc_multilink.build_tester:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/misc/sample_test/test_scripts/run.sh b/tests/bsim/bluetooth/host/misc/sample_test/test_scripts/run.sh
deleted file mode 100755
index cf96e025b2dc2..0000000000000
--- a/tests/bsim/bluetooth/host/misc/sample_test/test_scripts/run.sh
+++ /dev/null
@@ -1,80 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-# Provides common functions for bsim tests.
-# Mainly `Execute`, and `wait_for_background_jobs`.
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-# Helper variable. Expands to "tests_bsim_bluetooth_host_misc_sample_test".
-test_name="$(guess_test_long_name)"
-
-# Use a unique simulation id per test script. It is a necessity as the CI runner
-# will run all the test scripts in parallel. If multiple simulations share the
-# same ID, they will step on each other's toes in unpredictable ways.
-simulation_id=${test_name}
-
-# This controls the verbosity of the simulator. It goes up to 9 (not 11, sorry)
-# and is useful for figuring out what is happening on the PHYsical layer (e.g.
-# device 1 starts listening at T=100us) among other things.
-# `2` is the default value if not specified.
-verbosity_level=2
-
-# This sets the watchdog timeout for the `Execute` function.
-#
-# Although all simulations are started with a bounded end (the `sim_length`
-# option), something very wrong can still happen and this additional time-out
-# will ensure all executables started by the current script are killed.
-#
-# It measures wall-clock time, not simulated time. E.g. a test that simulates 5
-# hours might actually complete (have a runtime of) 10 seconds.
-#
-# The default is set in `sh_common.source`.
-# Guidelines to set this value:
-# - Do not set it to a value lower or equal to the default.
-# - If the test takes over 5 seconds of runtime, set `EXECUTE_TIMEOUT` to at
-#   least 5 times the run-time on your machine.
-EXECUTE_TIMEOUT=120
-
-# Set simulation length, in microseconds. The PHY will run for this amount of
-# simulated time, unless both devices exit.
-#
-# If you are not early-exiting the devices (e.g. using `TEST_PASS_AND_EXIT()`),
-# please run the test once and set the simulation time in the same ballpark. No
-# need to simulate hours of runtime if the test finishes in 10 seconds.
-#
-SIM_LEN_US=$((2 * 1000 * 1000))
-
-# This is the final path of the test executable.
-#
-# Some tests may have different executable images for each device in the test.
-#
-# In our case, both test cases are compiled in the same image, and the right one
-# will be run depending on what arguments we give the executable.
-test_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_prj_conf"
-
-# BabbleSim will by default search for its shared libraries assuming it is
-# running in the bin/ directory. Test results will also be placed in
-# `${BSIM_OUT_PATH}/results` if not specified.
-cd ${BSIM_OUT_PATH}/bin
-
-# Instantiate all devices in the simulation.
-# The `testid` parameter is used to run the right role or procedure (here "dut" vs "tester").
-Execute "${test_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -rs=420 -testid=dut \
-		-argstest log_level 3
-Execute "${test_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -rs=69  -testid=peer \
-		-argstest log_level 3
-
-# Start the PHY. Double-check the `-D` parameter: it has to match the number of
-# devices started in the lines above.
-#
-# Also set a maximum simulation length. If the devices have not set a special
-# variable indicating they have passed before the simulation runs out of time,
-# the test will be reported as "in progress (not passed)".
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=${SIM_LEN_US} $@
-
-# Wait until all executables started above have returned.
-# The exit code returned will be != 0 if any of them have failed.
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/misc/sample_test/testcase.yaml b/tests/bsim/bluetooth/host/misc/sample_test/testcase.yaml
index a5e18ce68c37b..7616ad19bf919 100644
--- a/tests/bsim/bluetooth/host/misc/sample_test/testcase.yaml
+++ b/tests/bsim/bluetooth/host/misc/sample_test/testcase.yaml
@@ -1,10 +1,19 @@
 tests:
   bluetooth.host.mics.sample_test:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_misc_sample_test_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 2e6
+      bsim_devices:
+        - test_id: dut
+        - test_id: peer
+      bsim_options:
+        - -argstest
+        - log_level
+        - '3'
diff --git a/tests/bsim/bluetooth/host/misc/unregister_conn_cb/testcase.yaml b/tests/bsim/bluetooth/host/misc/unregister_conn_cb/testcase.yaml
index 34deeb368f9e9..aa1798ff927bb 100644
--- a/tests/bsim/bluetooth/host/misc/unregister_conn_cb/testcase.yaml
+++ b/tests/bsim/bluetooth/host/misc/unregister_conn_cb/testcase.yaml
@@ -1,11 +1,16 @@
 tests:
   bluetooth.host.mics.unregister_conn_cb:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
       - nrf5340bsim/nrf5340/cpunet
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_misc_unregister_conn_cb_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 30e6
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
diff --git a/tests/bsim/bluetooth/host/misc/unregister_conn_cb/tests_scripts/unregister_conn_cb.sh b/tests/bsim/bluetooth/host/misc/unregister_conn_cb/tests_scripts/unregister_conn_cb.sh
deleted file mode 100755
index ad2b4dc0bb517..0000000000000
--- a/tests/bsim/bluetooth/host/misc/unregister_conn_cb/tests_scripts/unregister_conn_cb.sh
+++ /dev/null
@@ -1,25 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2024 NXP
-# Copyright (c) 2024 Nordic Semiconductor
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-#Unregister connection callbacks : A central device scans for and connects to a peripheral
-#after registered connection callbacks.When the connection state changes, few printing
-#will be printed and the flag_is_connected will be changed by the callback function.
-#After unregister the connection callbacks, reconnect to peer device, then no printing
-#neither flag change can be found, callback function was unregistered as expected
-simulation_id="unregister_conn_cb"
-verbosity_level=2
-
-bsim_exe=./bs_${BOARD_TS}_tests_bsim_bluetooth_host_misc_unregister_conn_cb_prj_conf
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -rs=420
-Execute "${bsim_exe}" -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -rs=100
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} -D=2 -sim_length=30e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test.sh
deleted file mode 100755
index 52a4109788362..0000000000000
--- a/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-EXECUTE_TIMEOUT=100
-verbosity_level=2
-simulation_id="$(guess_test_long_name)"
-
-central_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf"
-peripheral_exe="${central_exe}"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "$central_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
-
-Execute "$peripheral_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test_short_conn_timeout.sh b/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test_short_conn_timeout.sh
deleted file mode 100755
index 5e15e78517839..0000000000000
--- a/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test_short_conn_timeout.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2024 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-EXECUTE_TIMEOUT=100
-verbosity_level=2
-
-# Test that connection establishment times out when RPA
-# timeout is shorter than the connection establishment timeout
-simulation_id="test_central_connect_fails_with_short_rpa_timeout"
-
-central_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "$central_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 \
-    -testid=central_connect_fails_with_short_rpa_timeout -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=1 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test_short_rpa_timeout.sh b/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test_short_rpa_timeout.sh
deleted file mode 100755
index 0ed76b2f86ac2..0000000000000
--- a/tests/bsim/bluetooth/host/privacy/central/test_scripts/run_test_short_rpa_timeout.sh
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2024 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-EXECUTE_TIMEOUT=100
-verbosity_level=2
-
-# Test connection establishment when the RPA times out before
-# we expect the connection to be established
-simulation_id="test_central_connect_short_rpa_timeout"
-
-central_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf"
-peripheral_exe="${central_exe}"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "$central_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 \
-    -testid=central_connect_short_rpa_timeout -RealEncryption=1
-
-Execute "$peripheral_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 \
-    -testid=periph_delayed_start_of_conn_adv -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/privacy/central/testcase.yaml b/tests/bsim/bluetooth/host/privacy/central/testcase.yaml
index 5c988c2f26fea..b6e14b614588f 100644
--- a/tests/bsim/bluetooth/host/privacy/central/testcase.yaml
+++ b/tests/bsim/bluetooth/host/privacy/central/testcase.yaml
@@ -1,11 +1,37 @@
+common:
+  tags:
+    - bluetooth
+  platform_allow:
+    - nrf52_bsim/native
+    - nrf5340bsim/nrf5340/cpunet
+  timeout: 100
+  harness: bsim
+  no_build: true
+  harness_config:
+    bsim_exe_name: tests_bsim_bluetooth_host_privacy_central_prj_conf
+    bsim_verbosity: 2
+    bsim_sim_length: 60e6
+    bsim_options:
+      - -RealEncryption=1
+
 tests:
-  bluetooth.host.privacy.central:
+  bluetooth.host.privacy.build_central:
     build_only: true
-    tags:
-      - bluetooth
-    platform_allow:
-      - nrf52_bsim/native
-      - nrf5340bsim/nrf5340/cpunet
-    harness: bsim
+    no_build: false
+
+  bluetooth.host.privacy.central:
+    harness_config:
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+
+  bluetooth.host.privacy.central_short_conn_timeout:
+    harness_config:
+      bsim_devices:
+        - test_id: central_connect_fails_with_short_rpa_timeout
+
+  bluetooth.host.privacy.central_short_rpa_timeout:
     harness_config:
-      bsim_exe_name: tests_bsim_bluetooth_host_privacy_central_prj_conf
+      bsim_devices:
+        - test_id: central_connect_short_rpa_timeout
+        - test_id: periph_delayed_start_of_conn_adv
diff --git a/tests/bsim/bluetooth/host/privacy/device/test_scripts/run_tests.sh b/tests/bsim/bluetooth/host/privacy/device/test_scripts/run_tests.sh
deleted file mode 100755
index 171957b7163bc..0000000000000
--- a/tests/bsim/bluetooth/host/privacy/device/test_scripts/run_tests.sh
+++ /dev/null
@@ -1,68 +0,0 @@
-#!/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-simulation_id="$(guess_test_long_name)"
-test_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-TEST_ARGS=(
-    "leg_conn_scan_active"
-    "leg_conn_nscan_passive"
-    "ext_nconn_scan_active"
-    "ext_conn_nscan_passive"
-)
-TEST_ADDR_TYPE=("identity" "rpa")
-
-sim_id_count=0
-for args in ${TEST_ARGS[@]}; do
-    args=($(echo "${args}" | sed 's/_/ /g'))
-
-    use_ext_adv=0
-    if [ "${args[0]}" == "ext" ]; then
-        use_ext_adv=1
-    fi
-
-    connectable=0
-    if [ "${args[1]}" == "conn" ]; then
-        connectable=1
-    fi
-
-    scannable=0
-    if [ "${args[2]}" == "scan" ]; then
-        scannable=1
-    fi
-
-    use_active_scan=0
-    if [ "${args[3]}" == "active" ]; then
-        use_active_scan=1
-    fi
-
-    for addr_type in "${TEST_ADDR_TYPE[@]}"; do
-        echo "Starting iteration $sim_id_count: ${args[@]} $addr_type"
-        echo "################################################"
-
-        Execute "$test_exe" \
-            -v=${verbosity_level} -s="${simulation_id}_${sim_id_count}" -d=0 -testid=central \
-            -RealEncryption=1 -argstest sim-id=${sim_id_count} connection-test=${connectable} \
-            active-scan=${use_active_scan} addr-type="${addr_type}"
-
-        Execute "$test_exe" \
-            -v=${verbosity_level} -s="${simulation_id}_${sim_id_count}" -d=1 -testid=peripheral \
-            -RealEncryption=1 -argstest sim-id=${sim_id_count} addr-type="${addr_type}" \
-            use-ext-adv=${use_ext_adv} scannable=${scannable} connectable=${connectable}
-
-        Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}_${sim_id_count}" \
-            -D=2 -sim_length=20e6 $@
-
-        wait_for_background_jobs
-
-        sim_id_count=$(( sim_id_count + 1 ))
-    done
-done
diff --git a/tests/bsim/bluetooth/host/privacy/device/testcase.yaml b/tests/bsim/bluetooth/host/privacy/device/testcase.yaml
index 926f8ad59f9e5..b488267c019a4 100644
--- a/tests/bsim/bluetooth/host/privacy/device/testcase.yaml
+++ b/tests/bsim/bluetooth/host/privacy/device/testcase.yaml
@@ -1,10 +1,155 @@
+common:
+  tags:
+    - bluetooth
+  platform_allow:
+    - nrf52_bsim/native
+  harness: bsim
+  timeout: 30
+  no_build: true
+  harness_config:
+    bsim_exe_name: tests_bsim_bluetooth_host_privacy_device_prj_conf
+    bsim_verbosity: 2
+    bsim_sim_length: 60e6
+    bsim_options:
+      - -RealEncryption=1
+      - -argstest
+
 tests:
-  bluetooth.host.privacy.device:
+  bluetooth.host.privacy.build_device:
     build_only: true
-    tags:
-      - bluetooth
-    platform_allow:
-      - nrf52_bsim/native
-    harness: bsim
+    no_build: false
+  bluetooth.host.privacy.leg_conn_scan_active_identity:
     harness_config:
-      bsim_exe_name: tests_bsim_bluetooth_host_privacy_device_prj_conf
+      bsim_devices:
+        - test_id: central
+          options:
+            - sim-id=0
+            - addr-type=identity
+            - connection-test=1
+            - active-scan=1
+        - test_id: peripheral
+          options:
+            - sim-id=0
+            - addr-type=identity
+            - use-ext-adv=0
+            - scannable=1
+            - connectable=1
+
+  bluetooth.host.privacy.leg_conn_scan_active_rpa:
+    harness_config:
+      bsim_devices:
+        - test_id: central
+          options:
+            - sim-id=1
+            - addr-type=rpa
+            - connection-test=1
+            - active-scan=1
+        - test_id: peripheral
+          options:
+            - sim-id=1
+            - addr-type=rpa
+            - use-ext-adv=0
+            - scannable=1
+            - connectable=1
+
+  bluetooth.host.privacy.leg_conn_nscan_passive_identity:
+    harness_config:
+      bsim_devices:
+        - test_id: central
+          options:
+            - sim-id=2
+            - addr-type=identity
+            - connection-test=1
+            - active-scan=0
+        - test_id: peripheral
+          options:
+            - sim-id=2
+            - addr-type=identity
+            - use-ext-adv=0
+            - scannable=0
+            - connectable=1
+
+  bluetooth.host.privacy.leg_conn_nscan_passive_rpa:
+    harness_config:
+      bsim_devices:
+        - test_id: central
+          options:
+            - sim-id=3
+            - addr-type=rpa
+            - connection-test=1
+            - active-scan=0
+        - test_id: peripheral
+          options:
+            - sim-id=3
+            - addr-type=rpa
+            - use-ext-adv=0
+            - scannable=0
+            - connectable=1
+
+  bluetooth.host.privacy.ext_nconn_scan_active_identity:
+    harness_config:
+      bsim_devices:
+        - test_id: central
+          options:
+            - sim-id=4
+            - addr-type=identity
+            - connection-test=0
+            - active-scan=1
+        - test_id: peripheral
+          options:
+            - sim-id=4
+            - addr-type=identity
+            - use-ext-adv=1
+            - scannable=1
+            - connectable=0
+
+  bluetooth.host.privacy.ext_nconn_scan_active_rpa:
+    harness_config:
+      bsim_devices:
+        - test_id: central
+          options:
+            - sim-id=5
+            - addr-type=rpa
+            - connection-test=0
+            - active-scan=1
+        - test_id: peripheral
+          options:
+            - sim-id=5
+            - addr-type=rpa
+            - use-ext-adv=1
+            - scannable=1
+            - connectable=0
+
+  bluetooth.host.privacy.ext_conn_nscan_passive_identity:
+    harness_config:
+      bsim_devices:
+        - test_id: central
+          options:
+            - sim-id=6
+            - addr-type=identity
+            - connection-test=1
+            - active-scan=0
+        - test_id: peripheral
+          options:
+            - sim-id=6
+            - addr-type=identity
+            - use-ext-adv=1
+            - scannable=0
+            - connectable=1
+
+  bluetooth.host.privacy.ext_conn_nscan_passive_rpa:
+    harness_config:
+      bsim_devices:
+        - test_id: central
+          options:
+            - sim-id=7
+            - addr-type=rpa
+            - connection-test=1
+            - active-scan=0
+        - test_id: peripheral
+          options:
+            - sim-id=7
+            - addr-type=rpa
+            - use-ext-adv=1
+            - scannable=0
+            - connectable=1
diff --git a/tests/bsim/bluetooth/host/privacy/legacy/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/privacy/legacy/test_scripts/run_test.sh
deleted file mode 100755
index 2e83ef3857a74..0000000000000
--- a/tests/bsim/bluetooth/host/privacy/legacy/test_scripts/run_test.sh
+++ /dev/null
@@ -1,25 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-simulation_id="$(guess_test_long_name)"
-central_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf"
-peripheral_exe="${central_exe}"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "$central_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
-
-Execute "$peripheral_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=70e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/privacy/legacy/testcase.yaml b/tests/bsim/bluetooth/host/privacy/legacy/testcase.yaml
index ba3d318e3722c..b09317d768502 100644
--- a/tests/bsim/bluetooth/host/privacy/legacy/testcase.yaml
+++ b/tests/bsim/bluetooth/host/privacy/legacy/testcase.yaml
@@ -1,10 +1,17 @@
 tests:
   bluetooth.host.privacy.legacy:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_privacy_legacy_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 70e6
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+      bsim_options:
+        - -RealEncryption=1
diff --git a/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test.sh
deleted file mode 100755
index f813bf1d86f59..0000000000000
--- a/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test.sh
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-simulation_id="host_privacy_peripheral"
-EXECUTE_TIMEOUT=240
-
-central_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf"
-peripheral_exe="${central_exe}"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "$central_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1 \
-    -flash="${simulation_id}.central.log.bin" -flash_erase
-
-Execute "$peripheral_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1 \
-    -flash="${simulation_id}.peripheral.log.bin" -flash_erase
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=70e6 $@
-
-wait_for_background_jobs
-
-Execute "$central_exe" \
-    -v=${verbosity_level} -s=${simulation_id}.2 -d=0 -testid=central -RealEncryption=1 \
-    -flash="${simulation_id}.central.log.bin" -flash_rm
-
-Execute "$peripheral_exe" \
-    -v=${verbosity_level} -s=${simulation_id}.2 -d=1 -testid=peripheral -RealEncryption=1 \
-    -flash="${simulation_id}.peripheral.log.bin" -flash_rm
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id}.2 \
-    -D=2 -sim_length=70e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test_rpa_expired.sh b/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test_rpa_expired.sh
deleted file mode 100755
index 90cb146fe798f..0000000000000
--- a/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test_rpa_expired.sh
+++ /dev/null
@@ -1,29 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-simulation_id="rpa_expired"
-EXECUTE_TIMEOUT=240
-
-central_exe_rpa_expired="\
-${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_$(guess_test_long_name)_prj_rpa_expired_conf"
-peripheral_exe_rpa_expired="${central_exe_rpa_expired}"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "$central_exe_rpa_expired" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central_rpa_check \
-    -RealEncryption=1 -flash="${simulation_id}.central.log.bin" -flash_erase
-
-Execute "$peripheral_exe_rpa_expired" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral_rpa_expired \
-    -RealEncryption=1 -flash="${simulation_id}.peripheral.log.bin" -flash_erase
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=70e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test_rpa_sharing.sh b/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test_rpa_sharing.sh
deleted file mode 100755
index 49daf4e5a86db..0000000000000
--- a/tests/bsim/bluetooth/host/privacy/peripheral/test_scripts/run_test_rpa_sharing.sh
+++ /dev/null
@@ -1,42 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-simulation_id="$(guess_test_long_name)_rpa_sharing"
-EXECUTE_TIMEOUT=240
-
-central_exe_rpa_sharing="\
-${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_$(guess_test_long_name)_prj_rpa_sharing_conf"
-peripheral_exe_rpa_sharing="${central_exe_rpa_sharing}"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "$central_exe_rpa_sharing" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1 \
-    -flash="${simulation_id}.central.log.bin"
-
-Execute "$peripheral_exe_rpa_sharing" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1 \
-    -flash="${simulation_id}.peripheral.log.bin"
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=70e6 $@
-
-wait_for_background_jobs
-
-Execute "$central_exe_rpa_sharing" \
-    -v=${verbosity_level} -s=${simulation_id}_2 -d=0 -testid=central -RealEncryption=1 \
-    -flash="${simulation_id}.central.log.bin" -flash_rm
-
-Execute "$peripheral_exe_rpa_sharing" \
-    -v=${verbosity_level} -s=${simulation_id}_2 -d=1 -testid=peripheral -RealEncryption=1 \
-    -flash="${simulation_id}.peripheral.log.bin" -flash_rm
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id}_2 \
-    -D=2 -sim_length=70e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/privacy/peripheral/testcase.yaml b/tests/bsim/bluetooth/host/privacy/peripheral/testcase.yaml
index fa308533568cd..dab342b96a411 100644
--- a/tests/bsim/bluetooth/host/privacy/peripheral/testcase.yaml
+++ b/tests/bsim/bluetooth/host/privacy/peripheral/testcase.yaml
@@ -1,22 +1,94 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
+  timeout: 240
   harness: bsim
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 70e6
+    bsim_options:
+      - -RealEncryption=1
 
 tests:
-  bluetooth.host.privacy.peripheral:
+  bluetooth.host.privacy.build_peripheral:
+    build_only: true
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_privacy_peripheral_prj_conf
+
+  bluetooth.host.privacy.build_peripheral_rpa_sharing:
+    build_only: true
+    harness_config:
+      bsim_exe_name: tests_bsim_bluetooth_host_privacy_peripheral_prj_rpa_sharing_conf
+    extra_args:
+      EXTRA_CONF_FILE=prj_rpa_sharing.conf
+
+  bluetooth.host.privacy.peripheral_1:
+    no_build: true
+    harness_config:
+      bsim_exe_name: tests_bsim_bluetooth_host_privacy_peripheral_prj_conf
+      bsim_devices:
+        - test_id: central
+          options:
+            - -flash=privacy_peripheral.central.log.bin
+            - -flash_erase
+        - test_id: peripheral
+          options:
+            - -flash=privacy_peripheral.peripheral.log.bin
+            - -flash_erase
+
+  bluetooth.host.privacy.peripheral_2:
+    no_build: true
+    harness_config:
+      bsim_exe_name: tests_bsim_bluetooth_host_privacy_peripheral_prj_conf
+      bsim_devices:
+        - test_id: central
+          options:
+            - -flash=privacy_peripheral.central.log.bin
+            - -flash_rm
+        - test_id: peripheral
+          options:
+            - -flash=privacy_peripheral.peripheral.log.bin
+            - -flash_rm
+
   bluetooth.host.privacy.peripheral_rpa_expired:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_privacy_peripheral_prj_rpa_expired_conf
+      bsim_devices:
+        - test_id: central_rpa_check
+          options:
+            - -flash=rpa_expired.central.log.bin
+            - -flash_erase
+        - test_id: peripheral_rpa_expired
+          options:
+            - -flash=rpa_expired.peripheral.log.bin
+            - -flash_erase
     extra_args:
       EXTRA_CONF_FILE=prj_rpa_expired.conf
-  bluetooth.host.privacy.peripheral_rpa_sharing:
+
+  bluetooth.host.privacy.peripheral_rpa_sharing_1:
+    no_build: true
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_privacy_peripheral_prj_rpa_sharing_conf
-    extra_args:
-      EXTRA_CONF_FILE=prj_rpa_sharing.conf
+      bsim_devices:
+        - test_id: central
+          options:
+            - -flash=rpa_sharing.central.log.bin
+        - test_id: peripheral
+          options:
+            - -flash=rpa_sharing.peripheral.log.bin
+
+  bluetooth.host.privacy.peripheral_rpa_sharing_2:
+    no_build: true
+    harness_config:
+      bsim_exe_name: tests_bsim_bluetooth_host_privacy_peripheral_prj_rpa_sharing_conf
+      bsim_devices:
+        - test_id: central
+          options:
+            - -flash=rpa_sharing.central.log.bin
+            - -flash_rm
+        - test_id: peripheral
+          options:
+            - -flash=rpa_sharing.peripheral.log.bin
+            - -flash_rm
diff --git a/tests/bsim/bluetooth/host/scan/slow/test_scripts/run.sh b/tests/bsim/bluetooth/host/scan/slow/test_scripts/run.sh
deleted file mode 100755
index 0b893952d32e7..0000000000000
--- a/tests/bsim/bluetooth/host/scan/slow/test_scripts/run.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2024 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name="$(guess_test_long_name)"
-test_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_name}_prj_conf"
-
-simulation_id=${test_name}
-verbosity_level=2
-zephyr_log_level=3
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}" \
-  -D=2 -sim_length=100e6
-
-Execute "${test_exe}" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=1 \
-    -testid=peer -argstest log_level ${zephyr_log_level}
-
-Execute "${test_exe}" \
-    -v=${verbosity_level} -s="${simulation_id}" -d=0 \
-    -testid=dut -argstest log_level ${zephyr_log_level}
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/scan/slow/testcase.yaml b/tests/bsim/bluetooth/host/scan/slow/testcase.yaml
index 348aaac15443d..010700dd197e4 100644
--- a/tests/bsim/bluetooth/host/scan/slow/testcase.yaml
+++ b/tests/bsim/bluetooth/host/scan/slow/testcase.yaml
@@ -1,10 +1,18 @@
 tests:
   bluetooth.host.scan.slow:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_scan_slow_prj_conf
+      bsim_devices:
+        - test_id: dut
+        - test_id: peer
+      bsim_verbosity: 2
+      bsim_sim_length: 100e6
+      bsim_options:
+        - -argstest
+        - '3'
diff --git a/tests/bsim/bluetooth/host/scan/start_stop/test_scripts/start_stop.sh b/tests/bsim/bluetooth/host/scan/start_stop/test_scripts/start_stop.sh
deleted file mode 100755
index 2e172fdde7c97..0000000000000
--- a/tests/bsim/bluetooth/host/scan/start_stop/test_scripts/start_stop.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_scan_start_stop_prj_conf"
-simulation_id="start_stop"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "./${test_exe}" \
-  -v=${verbosity_level} -s="${simulation_id}" -d=0 -testid=scanner
-
-Execute "./${test_exe}" \
-  -v=${verbosity_level} -s="${simulation_id}" -d=1 -testid=periodic_adv
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s="${simulation_id}" \
-  -D=2 -sim_length=5e6
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/scan/start_stop/testcase.yaml b/tests/bsim/bluetooth/host/scan/start_stop/testcase.yaml
index e119d715a7f12..5823cdef7e8b2 100644
--- a/tests/bsim/bluetooth/host/scan/start_stop/testcase.yaml
+++ b/tests/bsim/bluetooth/host/scan/start_stop/testcase.yaml
@@ -1,10 +1,15 @@
 tests:
   bluetooth.host.scan.start_stop:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_scan_start_stop_prj_conf
+      bsim_devices:
+        - test_id: scanner
+        - test_id: periodic_adv
+      bsim_verbosity: 2
+      bsim_sim_length: 5e6
diff --git a/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/run_test.sh
deleted file mode 100755
index 1c84dda23ae47..0000000000000
--- a/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/test_scripts/run_test.sh
+++ /dev/null
@@ -1,25 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="security_bond_overwrite_allowed"
-verbosity_level=2
-
-central_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf"
-peripheral_exe="${central_exe}"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "$central_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
-
-Execute "$peripheral_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/testcase.yaml b/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/testcase.yaml
index 37716b25446e3..24ce43c227fac 100644
--- a/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/testcase.yaml
+++ b/tests/bsim/bluetooth/host/security/bond_overwrite_allowed/testcase.yaml
@@ -1,10 +1,17 @@
 tests:
   bluetooth.host.security.bond_overwrite_allowed:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_security_bond_overwrite_allowed_prj_conf
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_options:
+        - -RealEncryption=1
diff --git a/tests/bsim/bluetooth/host/security/bond_overwrite_denied/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/security/bond_overwrite_denied/test_scripts/run_test.sh
deleted file mode 100755
index ea61a870aa26e..0000000000000
--- a/tests/bsim/bluetooth/host/security/bond_overwrite_denied/test_scripts/run_test.sh
+++ /dev/null
@@ -1,25 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-simulation_id="security_bond_overwrite_denied"
-verbosity_level=2
-central_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf"
-peripheral_exe="${central_exe}"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "$central_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
-
-Execute "$peripheral_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/security/bond_overwrite_denied/testcase.yaml b/tests/bsim/bluetooth/host/security/bond_overwrite_denied/testcase.yaml
index a9e9ab835a513..2f3d995a98b47 100644
--- a/tests/bsim/bluetooth/host/security/bond_overwrite_denied/testcase.yaml
+++ b/tests/bsim/bluetooth/host/security/bond_overwrite_denied/testcase.yaml
@@ -1,10 +1,17 @@
 tests:
   bluetooth.host.security.bond_overwrite_denied:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_security_bond_overwrite_denied_prj_conf
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_options:
+        - -RealEncryption=1
diff --git a/tests/bsim/bluetooth/host/security/bond_per_connection/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/security/bond_per_connection/test_scripts/run_test.sh
deleted file mode 100755
index d7c87b399c030..0000000000000
--- a/tests/bsim/bluetooth/host/security/bond_per_connection/test_scripts/run_test.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-
-simulation_id="security_bond_per_connection"
-
-central_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_$(guess_test_long_name)_prj_conf"
-peripheral_exe="${central_exe}"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "$central_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
-
-Execute "$peripheral_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/security/bond_per_connection/testcase.yaml b/tests/bsim/bluetooth/host/security/bond_per_connection/testcase.yaml
index a909fdc2a5c6b..2db04b0b86ff6 100644
--- a/tests/bsim/bluetooth/host/security/bond_per_connection/testcase.yaml
+++ b/tests/bsim/bluetooth/host/security/bond_per_connection/testcase.yaml
@@ -1,10 +1,17 @@
 tests:
   bluetooth.host.security.bond_per_connection:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
+    timeout: 30
     harness: bsim
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_security_bond_per_connection_prj_conf
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_options:
+        - -RealEncryption=1
diff --git a/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update_no_lazy_load.sh b/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/_ccc_update.sh
similarity index 61%
rename from tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update_no_lazy_load.sh
rename to tests/bsim/bluetooth/host/security/ccc_update/test_scripts/_ccc_update.sh
index 7dcda55ce497d..4a6296b539286 100755
--- a/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update_no_lazy_load.sh
+++ b/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/_ccc_update.sh
@@ -5,30 +5,12 @@
 source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
 
 test_name='ccc_update'
-test_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_security_${test_name}_overlay-no_lazy_load_conf"
+test_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_security_${test_name}_prj_conf"
 simulation_id="${test_name}_no_lazy_load"
 verbosity_level=2
 
 cd ${BSIM_OUT_PATH}/bin
 
-if [ "${1}" != 'debug0' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1
-fi
-
-if [ "${1}" != 'debug1' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=bad_central \
-    -flash="${simulation_id}_bad_client.log.bin" -flash_rm -RealEncryption=1
-fi
-
-if [ "${1}" != 'debug2' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=2 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1
-fi
-
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=3 -sim_length=60e6
 
diff --git a/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update.sh b/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update.sh
deleted file mode 100755
index bb4aab2b0dcc3..0000000000000
--- a/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update.sh
+++ /dev/null
@@ -1,53 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name='ccc_update'
-test_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_security_${test_name}_prj_conf"
-simulation_id="${test_name}"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-if [ "${1}" != 'debug0' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1
-fi
-
-if [ "${1}" != 'debug1' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=bad_central \
-    -flash="${simulation_id}_bad_client.log.bin" -flash_rm -RealEncryption=1
-fi
-
-if [ "${1}" != 'debug2' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=2 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1
-fi
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=3 -sim_length=60e6
-
-if [ "${1}" == 'debug0' ]; then
-  gdb --args "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1
-fi
-
-if [ "${1}" == 'debug1' ]; then
-  gdb --args "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=bad_central \
-    -flash="${simulation_id}_bad_client.log.bin" -flash_rm -RealEncryption=1
-fi
-
-if [ "${1}" == 'debug2' ]; then
-  gdb --args "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=2 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1
-fi
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update_no_long_wq.sh b/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update_no_long_wq.sh
deleted file mode 100755
index 425494e429499..0000000000000
--- a/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update_no_long_wq.sh
+++ /dev/null
@@ -1,53 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2025 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name='ccc_update'
-test_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_security_${test_name}_overlay-no_long_wq_conf"
-simulation_id="${test_name}_no_long_wq"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-if [ "${1}" != 'debug0' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1
-fi
-
-if [ "${1}" != 'debug1' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=bad_central \
-    -flash="${simulation_id}_bad_client.log.bin" -flash_rm -RealEncryption=1
-fi
-
-if [ "${1}" != 'debug2' ]; then
-  Execute "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=2 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1
-fi
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=3 -sim_length=60e6
-
-if [ "${1}" == 'debug0' ]; then
-  gdb --args "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1
-fi
-
-if [ "${1}" == 'debug1' ]; then
-  gdb --args "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=bad_central \
-    -flash="${simulation_id}_bad_client.log.bin" -flash_rm -RealEncryption=1
-fi
-
-if [ "${1}" == 'debug2' ]; then
-  gdb --args "./${test_exe}" \
-    -v=${verbosity_level} -s=${simulation_id} -d=2 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1
-fi
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/security/ccc_update/testcase.yaml b/tests/bsim/bluetooth/host/security/ccc_update/testcase.yaml
index de00313058415..e60a961197e44 100644
--- a/tests/bsim/bluetooth/host/security/ccc_update/testcase.yaml
+++ b/tests/bsim/bluetooth/host/security/ccc_update/testcase.yaml
@@ -1,22 +1,60 @@
 common:
-  build_only: true
   tags:
     - bluetooth
   platform_allow:
     - nrf52_bsim/native
   harness: bsim
+  timeout: 30
+  harness_config:
+    bsim_verbosity: 2
+    bsim_sim_length: 60e6
+    bsim_options:
+      - -RealEncryption=1
+      - -flash_rm
 
 tests:
   bluetooth.host.security.ccc_update:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_security_ccc_update_prj_conf
+      bsim_devices:
+        - test_id: central
+          options:
+            - -flash=ccc_update_client.log.bin
+        - test_id: bad_central
+          options:
+            - -flash=ccc_update_bad_client.log.bin
+        - test_id: peripheral
+          options:
+            - -flash=ccc_update_server.log.bin
+
   bluetooth.host.security.ccc_update_no_lazy_load:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_security_ccc_update_overlay-no_lazy_load_conf
+      bsim_devices:
+        - test_id: central
+          options:
+            - -flash=ccc_update_no_lazy_load_client.log.bin
+        - test_id: bad_central
+          options:
+            - -flash=ccc_update_no_lazy_load_bad_client.log.bin
+        - test_id: peripheral
+          options:
+            - -flash=ccc_update_no_lazy_load_server.log.bin
     extra_args:
       EXTRA_CONF_FILE=overlay-no_lazy_load.conf
+
   bluetooth.host.security.ccc_update_no_long_wq:
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_security_ccc_update_overlay-no_long_wq_conf
+      bsim_devices:
+        - test_id: central
+          options:
+            - -flash=ccc_update_no_long_wq_client.log.bin
+        - test_id: bad_central
+          options:
+            - -flash=ccc_update_no_long_wq_bad_client.log.bin
+        - test_id: peripheral
+          options:
+            - -flash=ccc_update_no_long_wq_server.log.bin
     extra_args:
       EXTRA_CONF_FILE=overlay-no_long_wq.conf
diff --git a/tests/bsim/bluetooth/host/security/id_addr_update/central/testcase.yaml b/tests/bsim/bluetooth/host/security/id_addr_update/central/testcase.yaml
index 69d4c329808f7..fd4eec7461e82 100644
--- a/tests/bsim/bluetooth/host/security/id_addr_update/central/testcase.yaml
+++ b/tests/bsim/bluetooth/host/security/id_addr_update/central/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.security.id_addr_update.central:
+  bluetooth.host.security.id_addr_update.build_central:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/security/id_addr_update/peripheral/testcase.yaml b/tests/bsim/bluetooth/host/security/id_addr_update/peripheral/testcase.yaml
index 4b15bf3890ad9..97fdc31595ce6 100644
--- a/tests/bsim/bluetooth/host/security/id_addr_update/peripheral/testcase.yaml
+++ b/tests/bsim/bluetooth/host/security/id_addr_update/peripheral/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  bluetooth.host.security.id_addr_update.peripheral:
+  bluetooth.host.security.id_addr_update.build_peripheral:
     build_only: true
     tags:
       - bluetooth
diff --git a/tests/bsim/bluetooth/host/security/id_addr_update/test_scripts/run_test.sh b/tests/bsim/bluetooth/host/security/id_addr_update/test_scripts/run_test.sh
deleted file mode 100755
index 3ff3d35db0ec5..0000000000000
--- a/tests/bsim/bluetooth/host/security/id_addr_update/test_scripts/run_test.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-set -eu
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-verbosity_level=2
-simulation_id="id_addr_update"
-
-test_path="$(guess_test_long_name)"
-central_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_path}_central_prj_conf"
-peripheral_exe="${BSIM_OUT_PATH}/bin/bs_${BOARD_TS}_${test_path}_peripheral_prj_conf"
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "$central_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
-
-Execute "$peripheral_exe" \
-    -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral -RealEncryption=1 -rs=200
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-    -D=2 -sim_length=60e6 $@
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/security/id_addr_update/testcase.yaml b/tests/bsim/bluetooth/host/security/id_addr_update/testcase.yaml
new file mode 100644
index 0000000000000..31fbe6c7dc461
--- /dev/null
+++ b/tests/bsim/bluetooth/host/security/id_addr_update/testcase.yaml
@@ -0,0 +1,19 @@
+tests:
+  bluetooth.host.security.id_addr_update.test:
+    no_build: true
+    tags:
+      - bluetooth
+    platform_allow:
+      - nrf52_bsim/native
+    harness: bsim
+    timeout: 30
+    harness_config:
+      bsim_devices:
+        - test_id: central
+          exe: tests_bsim_bluetooth_host_security_id_addr_update_central_prj_conf
+        - test_id: peripheral
+          exe: tests_bsim_bluetooth_host_security_id_addr_update_peripheral_prj_conf
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_options:
+        - -RealEncryption=1
diff --git a/tests/bsim/bluetooth/host/security/security_changed_callback/test_scripts/security_changed_callback.sh b/tests/bsim/bluetooth/host/security/security_changed_callback/test_scripts/security_changed_callback.sh
deleted file mode 100755
index 287eeeee152dd..0000000000000
--- a/tests/bsim/bluetooth/host/security/security_changed_callback/test_scripts/security_changed_callback.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2023 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-source ${ZEPHYR_BASE}/tests/bsim/sh_common.source
-
-test_name='security_changed_callback'
-test_exe="bs_${BOARD_TS}_tests_bsim_bluetooth_host_security_${test_name}_prj_conf"
-simulation_id="${test_name}"
-verbosity_level=2
-
-cd ${BSIM_OUT_PATH}/bin
-
-Execute "./${test_exe}" \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
-
-Execute "./${test_exe}" \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral_disconnect_in_sec_cb \
-  -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6
-
-wait_for_background_jobs
-
-Execute "./${test_exe}" \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central  -RealEncryption=1
-
-Execute "./${test_exe}" \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral_unpair_in_sec_cb \
-  -RealEncryption=1
-
-Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
-  -D=2 -sim_length=60e6
-
-wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/security/security_changed_callback/testcase.yaml b/tests/bsim/bluetooth/host/security/security_changed_callback/testcase.yaml
index a3b2f3a8082c9..417a7367d40ac 100644
--- a/tests/bsim/bluetooth/host/security/security_changed_callback/testcase.yaml
+++ b/tests/bsim/bluetooth/host/security/security_changed_callback/testcase.yaml
@@ -1,10 +1,17 @@
 tests:
   bluetooth.host.security.security_changed_callback:
-    build_only: true
     tags:
       - bluetooth
     platform_allow:
       - nrf52_bsim/native
     harness: bsim
+    timeout: 30
     harness_config:
       bsim_exe_name: tests_bsim_bluetooth_host_security_security_changed_callback_prj_conf
+      bsim_devices:
+        - test_id: central
+        - test_id: peripheral_disconnect_in_sec_cb
+      bsim_verbosity: 2
+      bsim_sim_length: 60e6
+      bsim_options:
+        - -RealEncryption=1
diff --git a/tests/bsim/bluetooth/tests.nrf5340bsim_nrf5340_cpunet.txt b/tests/bsim/bluetooth/tests.nrf5340bsim_nrf5340_cpunet.txt
index aa326918c904d..1d9d73630db5c 100644
--- a/tests/bsim/bluetooth/tests.nrf5340bsim_nrf5340_cpunet.txt
+++ b/tests/bsim/bluetooth/tests.nrf5340bsim_nrf5340_cpunet.txt
@@ -2,15 +2,3 @@
 # built in the net core)
 # This file is used in CI to select which tests are run
 tests/bsim/bluetooth/ll/
-tests/bsim/bluetooth/host/att/eatt_notif
-tests/bsim/bluetooth/host/misc/disable
-tests/bsim/bluetooth/host/misc/unregister_conn_cb
-tests/bsim/bluetooth/host/adv/periodic
-tests/bsim/bluetooth/host/adv/extended
-tests/bsim/bluetooth/host/adv/chain
-tests/bsim/bluetooth/host/l2cap/send_on_connect
-tests/bsim/bluetooth/host/central
-tests/bsim/bluetooth/host/privacy/central
-tests/bsim/bluetooth/host/gatt/authorization
-tests/bsim/bluetooth/host/gatt/general
-tests/bsim/bluetooth/host/gatt/caching
diff --git a/tests/bsim/ci.bt.sh b/tests/bsim/ci.bt.sh
index cce0d6364d691..8716d808b32b9 100755
--- a/tests/bsim/ci.bt.sh
+++ b/tests/bsim/ci.bt.sh
@@ -19,6 +19,8 @@ RESULTS_FILE=${ZEPHYR_BASE}/bsim_out/bsim_results.bt.52.xml \
 TESTS_FILE=tests/bsim/bluetooth/tests.nrf52bsim.txt \
 tests/bsim/run_parallel.sh
 
+west twister -T ${ZEPHYR_BASE}/tests/bsim/bluetooth/host/ -p nrf52_bsim/native
+
 # nrf5340bsim/nrf5340/cpunet set:
 nice tests/bsim/bluetooth/compile.nrf5340bsim_nrf5340_cpunet.sh
 
@@ -27,6 +29,8 @@ RESULTS_FILE=${ZEPHYR_BASE}/bsim_out/bsim_results.bt.53_cpunet.xml \
 TESTS_FILE=tests/bsim/bluetooth/tests.nrf5340bsim_nrf5340_cpunet.txt \
 tests/bsim/run_parallel.sh
 
+west twister -T ${ZEPHYR_BASE}/tests/bsim/bluetooth/host/ -p nrf5340bsim/nrf5340/cpunet
+
 # nrf5340 split stack set:
 nice tests/bsim/bluetooth/compile.nrf5340bsim_nrf5340_cpuapp.sh