ModernStealthLauncher

ModernStealthLauncher (aka. MonoStealthLauncher) is designed to inject managed assemblies into Mono-based processes. Currently, it is mainly built around R.E.P.O., an indie C# Unity game, to load DARK but may be extended to other games & platforms. The project is split into a native DLL injector (monoloader.dll) and a modern WPF GUI that manages releases and injection.

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Features

• Dynamic Assembly Injection
  Uses hook-based techniques and runtime function resolution to inject managed assemblies into the target Mono process (R.E.P.O.).

• Auto-Updating Releases
  Fetches release information from GitHub (Stable, Beta, Pre-release channels) and downloads the latest selected DLL.

• Configurable Injection Parameters
  Supports user-defined namespace, class, and method for injection via a temporary configuration file.

• Robust Logging & Status Reporting
  Provides detailed logging (INFO, DEBUG, SUCCESS, WARNING, ERROR) with real-time feedback in the GUI.

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Architecture

• monoloader.dll (Injector)

  • Written in C++ using the Windows API.
  • Dynamically loads Mono runtime functions to attach to and inject into the R.E.P.O. process.
  • Reads injection parameters (DLL, namespace, class, method) from a configuration file generated by the GUI.

• ModernStealthLauncher (GUI)

  • A WPF application in C# that manages GitHub release fetching, injection settings, and real-time process status.
  • Extracts monoloader.dll from embedded resources and triggers the injection process.
  • Currently tailored for injecting into R.E.P.O. only

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Build Instructions

monoloader.dll

• Language: C++
• Requirements: Windows SDK; link against standard Windows libraries.
• Notes: Configure the project to disable thread library calls and target the correct Mono module names.

ModernStealthLauncher (GUI)

• Language: C#
• Framework: WPF (.NET Framework)
• Dependencies: Newtonsoft.Json for JSON processing.
• Notes: Ensure GitHub API access is enabled by setting an appropriate User-Agent header.

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Dependencies

• Platform: Windows (tested on Windows 10)
• Target Process: R.E.P.O. (Unity/C#)
• Runtime: Mono (target process must be Mono-based)
• Development Tools: Visual Studio (for both C++ and C# projects)

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Disclaimer

This tool is intended for use with the R.E.P.O. game only. Unauthorized modification or injection into software may violate legal and ethical guidelines. Use at your own risk.