017ec50adc
This PR attempts to add support for `listen`, `accept`, `send`, and `recv` to afd_endpoint. The changes in this PR allow me to get a simple HTTP server running in the emulator, but I'm still likely missing something as I run into a mapping violation on `select` when performing chunked downloads from the HTTP server. Also, there are still some things I'm still uncertain about: - Where the `delayed_ioctl_` event should be reset? It wasn't being reset previously, which caused issues. In this PR, I'm resetting it with every IO operation. - ~~Is `AFD_LISTEN_RESPONSE_INFO` correct? The struct Windows expects appears to be 20 bytes long, so I had to remove some fields from the structure.~~ - ~~`pragma pack(push, 1)` seems to be necessary, but it doesn't seem to be used in the other structures, maybe they fit neatly in the alignment?~~
Sogen
Sogen is a high-performance Windows user space emulator that operates at syscall level, providing full control over process execution through comprehensive hooking capabilities.
Perfect for security research, malware analysis, and DRM research where fine-grained control over process execution is required.
Built in C++ and powered by the Unicorn Engine (or the icicle-emu 🆕).
Try it out: sogen.dev
Key Features
- 🔄 Syscall-Level Emulation
- Instead of reimplementing Windows APIs, the emulator operates at the syscall level, allowing it to leverage existing system DLLs
- 📝 Advanced Memory Management
- Supports Windows-specific memory types including reserved, committed, built on top of Unicorn's memory management
- 📦 Complete PE Loading
- Handles executable and DLL loading with proper memory mapping, relocations, and TLS
- ⚡ Exception Handling
- Implements Windows structured exception handling (SEH) with proper exception dispatcher and unwinding support
- 🧵 Threading Support
- Provides a scheduled (round-robin) threading model
- 💾 State Management
- Supports both full state serialization and
fast in-memory snapshots(currently broken 😕)
- Supports both full state serialization and
- 💻 Debugging Interface
- Implements GDB serial protocol for integration with common debugging tools (IDA Pro, GDB, LLDB, VS Code, ...)
Note
The project is still in a very early, prototypical state. The code still needs a lot of cleanup and many features and syscalls need to be implemented. However, constant progress is being made :)
Preview
YouTube Overview
Click here for the slides.
Quick Start (Windows + Visual Studio)
Tip
Checkout the Wiki for more details on how to build & run the emulator on Windows, Linux, macOS, ...
1. Checkout the code:
git clone --recurse-submodules https://github.com/momo5502/sogen.git
2. Run the following command in an x64 Development Command Prompt in the cloned directory:
cmake --preset=vs2022
3. Build the solution that was generated at build/vs2022/emulator.sln
4. Create a registry dump by running the grab-registry.bat as administrator and place it in the artifacts folder next to the analyzer.exe
5. Run the program of your choice:
analyzer.exe C:\example.exe