nosferatu.xml

<?xml version="1.0"?>

<scenario xmlns="http://www.github/cliffe/SecGen/scenario"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://www.github/cliffe/SecGen/scenario">

  <name>Nosferatu</name>
  <author>Z. Cliffe Schreuders</author>
  <description>
    A lightweight, rarely-patched web server is listening on the target, and a directory
    traversal bug in how it parses HTTP requests lets a crafted request break out of the web
    root and execute commands on the underlying system - no authentication needed.
    Fingerprint the service, build a request that escapes its intended boundaries, and pop a
    shell to reach the first flag; along the way you'll pick up an obfuscated message that's
    worth feeding through a decoding toolkit before you dismiss it as noise. Once inside,
    hunt for a sudo rule around an everyday file-pager utility that was never meant to grant
    root - abuse it to escape into a root shell and take the final flag.
  </description>

  <type>ctf</type>
  <type>attack-ctf</type>
  <type>pwn-ctf</type>
  <difficulty>medium</difficulty>

  <!-- http -->
  <CyBOK KA="WAM" topic="Server-Side Vulnerabilities and Mitigations">
    <keyword>server-side misconfiguration and vulnerable components</keyword>
    <keyword>Directory traversal</keyword>
  </CyBOK>
  <CyBOK KA="MAT" topic="Attacks and exploitation">
    <keyword>EXPLOITATION</keyword>
    <keyword>EXPLOITATION FRAMEWORKS</keyword>
    <keyword>DIRECTORY TRAVERSAL</keyword>
  </CyBOK>
  <CyBOK KA="SS" topic="Categories of Vulnerabilities">
    <keyword>CVEs and CWEs</keyword>
  </CyBOK>
  <CyBOK KA="SOIM" topic="PENETRATION TESTING">
    <keyword>PENETRATION TESTING - SOFTWARE TOOLS</keyword>
    <keyword>PENETRATION TESTING - ACTIVE PENETRATION</keyword>
    <keyword>PENETRATION TESTING - NETWORK MAPPING - RECONNAISSANCE</keyword>
  </CyBOK>
  <CyBOK KA="NS" topic="PENETRATION TESTING">
    <keyword>PENETRATION TESTING - NETWORK MAPPING - FINGERPRINTING</keyword>
    <keyword>PENETRATION TESTING - NETWORK MAPPING - NMAP</keyword>
  </CyBOK>

  <!-- escalate to user and to root via suid -->
  <CyBOK KA="AAA" topic="Authorisation">
    <keyword>access control</keyword>
    <keyword>Elevated privileges</keyword>
    <keyword>Vulnerabilities and attacks on access control misconfigurations</keyword>
  </CyBOK>
  <CyBOK KA="OSV" topic="Primitives for Isolation and Mediation">
    <keyword>Access controls and operating systems</keyword>
    <keyword>Linux security model</keyword>
    <keyword>Attacks against SUID</keyword>
  </CyBOK>

  <CyBOK KA="AB" topic="Models">
    <keyword>kill chains</keyword>
  </CyBOK>
  <CyBOK KA="MAT" topic="Malicious Activities by Malware">
    <keyword>cyber kill chain</keyword>
  </CyBOK>


  <system>
    <system_name>attack_vm</system_name>
    <base distro="Kali" name="MSF"/>


    <input into_datastore="IP_addresses">
      <!-- 0 attack_vm -->
      <network_ip system="attack_vm"/>
      <!-- 1 hackme_server -->
      <network_ip system="server"/>
    </input>

    <utility module_path=".*/parameterised_accounts">
      <input into="accounts">
        <value>{"username":"kali","password":"kali","super_user":"true","strings_to_leak":[],"leaked_filenames":[]}</value>
      </input>
    </utility>

    <utility module_path=".*/cyberchef"/>

    <utility module_path=".*/iceweasel">
      <input into="accounts">
        <value>{"username":"kali","password":"kali","super_user":"true","strings_to_leak":[],"leaked_filenames":[]}</value>
      </input>
      <input into="autostart">
        <value>true</value>
      </input>
      <input into="start_page">
        <value>file:///opt/cyberchef/CyberChef.html</value>
      </input>
    </utility>

    <utility module_path=".*/kali_top10"/>
    <utility module_path=".*/kali_web"/>

    <network type="private_network"/>
    <input into_datastore="spoiler_admin_pass">
      <generator type="strong_password_generator"/>
    </input>
    <build type="cleanup">
      <input into="root_password">
        <datastore>spoiler_admin_pass</datastore>
      </input>
    </build>
  </system>

  <system>
    <system_name>server</system_name>
    <base distro="Debian 12" type="desktop" name="KDE"/>

    <vulnerability module_path=".*/nostromo_code_exec">
      <input into="strings_to_leak">
        <generator type="flag_generator"/>
      </input>
      <input into="strings_to_pre_leak">
        <generator type="flag_generator"/>

        <encoder type="^(ascii|alpha)_reversible$" difficulty="low">
          <input into="strings_to_encode">
            <generator type="flag_generator"/>
          </input>
        </encoder>
      </input>
    </vulnerability>

    <vulnerability module_path=".*/sudo_root_less">
      <input into="strings_to_leak">
        <generator type="flag_generator"/>
      </input>
    </vulnerability>


    <network type="private_network"/>
    <build type="cleanup">
      <input into="root_password">
        <datastore>spoiler_admin_pass</datastore>
      </input>
    </build>
  </system>

</scenario>