OpenSteamTool

OpenSteamTool is a Windows DLL project built with CMake.

Feature

Core Unlocks

• Unlock an unlimited number of unowned games.
• Unlock all DLCs for unowned games.

Bypasses & DRM Compatibility

• Bypass Low Violence (LV) restrictions.
• Bypass Region Locks.

Client & Architecture Support

• Fully supports the official Steam client.
• Compatible with both x86 and x64 game architectures.

Future

• Enable stats and achievements for unowned games.
• Bypass Steam Families sharing restrictions.
• Compatible with games protected by Denuvo and SteamStub.
• Steam Cloud synchronization support.

Usage

1. Run build.bat from the project root to build the project.
2. Copy generated dwmapi.dll and OpenSteamTool.dll to the Steam root directory.
3. Create Lua directory (for example C:\steam\config\lua) and place Lua scripts there. The DLL will automatically load and execute them.
4. Lua example:

addappid(123456) -- unlock game with appid 123456
addappid(123456, 0,"aa11111111111111") -- unlock game with appid 123456 depotKey is "aa11111111111111"  but we don't use depotKey in this project,refer to the next point.      

5. Downloading still requires manifest and key:
   • You can add the depot key in config.vdf.
   • You need to find the manifest by yourself.
   • This project focuses on unlock behavior only.

Build

Requirements

• Windows 10/11
• CMake 3.10+
• Visual Studio 2022 with MSVC (x64 toolchain)

Included prebuilt dependencies

This repository expects these local files:

• include/Lua/lua54.lib
• include/MinHook/libMinHook.x64.lib

Toolchain compatibility note

• This project is intended to be built with MSVC only.
• Do not use Clang/lld or other toolchains for this repository.

Quick build

build.bat

Output

• Debug: build/Debug/OpenSteamTool.dll and build/Debug/dwmapi.dll
• Release: build/Release/OpenSteamTool.dll and build/Release/dwmapi.dll

Disclaimer

This project is provided for research and educational purposes only. You are responsible for complying with local laws, platform terms of service, and software licenses.