Rewrite Windbg/TTD installation in C++. Fix #794

Author: Copilot

core/adapters/dbgeng/README.md

@@ -0,0 +1,59 @@
+# WinDbg/TTD Installer Implementation
+
+This directory contains the C++ implementation of the WinDbg/TTD automatic installer for Binary Ninja.
+
+## Overview
+
+The installer was rewritten from Python to C++ to allow it to work with both paid and free versions of Binary Ninja. The original Python implementation (`install_windbg.py`) was restricted to only work with paid versions due to the `#ifdef DEMO_EDITION` check in the UI code.
+
+## Files
+
+- `install_windbg.h` - Header file with function declarations
+- `install_windbg.cpp` - Main implementation with Windows-specific code
+
+## Functionality
+
+The installer performs these steps:
+
+1. **Download AppInstaller**: Downloads the appinstaller XML file from Microsoft's WinDbg download URL
+2. **Parse XML**: Extracts the MSIX bundle URL from the appinstaller XML using pugixml
+3. **Download MSIX Bundle**: Downloads the MSIX bundle containing WinDbg
+4. **Extract Inner MSIX**: Extracts the `windbg_win-x64.msix` file from the bundle
+5. **Extract WinDbg**: Extracts the actual WinDbg files to the user directory
+6. **Validate Installation**: Checks that required files (dbgeng.dll, TTD.exe, etc.) are present
+7. **Update Settings**: Sets the `debugger.x64dbgEngPath` setting to point to the installation
+
+## Dependencies
+
+- **Windows APIs**: URLDownloadToFileA for HTTP downloads, CreateProcess for PowerShell execution
+- **pugixml**: For XML parsing (already included in the project)
+- **PowerShell**: Used for ZIP extraction via System.IO.Compression.FileSystem
+- **Standard C++20**: filesystem, string handling, etc.
+
+## Libraries Required
+
+- urlmon.lib - For URL downloading
+- shell32.lib - For shell operations
+- ole32.lib - For GUID generation
+
+## UI Integration
+
+The installer is called from `ui/ui.cpp` in the `GlobalDebuggerUI::installTTD()` function, which:
+- Shows a progress dialog
+- Runs the installer asynchronously using QTimer
+- Displays success/failure messages
+
+## Error Handling
+
+The implementation includes comprehensive error handling:
+- HTTP download failures
+- XML parsing errors
+- ZIP extraction failures
+- File system errors
+- Process execution errors
+
+All errors are logged using Binary Ninja's logging system and reported to the user via message boxes.
+
+## Testing
+
+Basic functionality can be tested by compiling the XML parsing component separately. The ZIP extraction relies on PowerShell and Windows APIs, so it requires a Windows environment for full testing.

docs/guide/dbgeng-ttd.md

@@ -14,16 +14,14 @@ There are two ways to install and configure WinDbg to be used by Binary Ninja de
 We recommend you to try the first method first. 
 If it does not work, for example if your machine cannot connect to the Internet, you can follow the second method to set it up manually.
 
-The free version currently does not support installing WinDbg automatically. It needs to be installed manually.
-
 The WinDbg installation only needs to be done once.
 
 ### Install WinDbg Automatically
 
 - Open Binary Ninja
 - Click Menu -> "Debugger" -> "Install WinDbg/TTD"
-- Wait for the script to finish
-    - Behind the scenes, this runs the Python [script](https://github.com/Vector35/debugger/blob/dev/core/adapters/dbgeng/install_windbg.py) to download and configure WinDbg
+- Wait for the installation to finish
+    - Behind the scenes, this runs a C++ installer that downloads and configures WinDbg
     - The WinDbg will be installed to `%APPDATA%\Binary Ninja\windbg`
 - Restart Binary Ninja
 

ui/CMakeLists.txt

@@ -41,3 +41,7 @@ set_target_properties(debuggerui PROPERTIES
         )
 
 target_link_libraries(debuggerui debuggerapi binaryninjaui Qt6::Core Qt6::Gui Qt6::Widgets)
+
+if(WIN32)
+    target_link_libraries(debuggerui urlmon.lib shell32.lib ole32.lib)
+endif()