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windows-user-space-emulator/README.md
2025-04-09 18:59:09 +02:00

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<img src="./docs/images/cover.png" />
<h1 align="center">
Windows User Space Emulator
<br>
<a href="https://github.com/momo5502/emulator?tab=GPL-2.0-1-ov-file"><img src="https://img.shields.io/github/license/momo5502/emulator?color=00B0F8"/></a>
<a href="https://github.com/momo5502/emulator/actions"><img src="https://img.shields.io/github/actions/workflow/status/momo5502/emulator/build.yml?branch=main&label=build"/></a>
<a href="https://github.com/momo5502/emulator/issues"><img src="https://img.shields.io/github/issues/momo5502/emulator?color=F8B000"/></a>
<img src="https://img.shields.io/github/commit-activity/m/momo5502/emulator?color=FF3131"/>
</h1>
A high-performance Windows process 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](https://github.com/unicorn-engine/unicorn) (or the [icicle-emu](https://github.com/icicle-emu/icicle-emu) 🆕).
## 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 😕)
* 💻 __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
![Preview](./docs/images/preview.jpg)
## YouTube Overview
[![YouTube video](./docs/images/yt.jpg)](https://www.youtube.com/watch?v=wY9Q0DhodOQ)
Click <a href="https://docs.google.com/presentation/d/1pha4tFfDMpVzJ_ehJJ21SA_HAWkufQBVYQvh1IFhVls/edit">here</a> for the slides.
## Build & Run Instructions
Instructions on how to build & run the emulator and more can be found in the [Wiki](https://github.com/momo5502/emulator/wiki)!