Starcraft 2 Hook

Description

Hooks Starcraft 2's DirectX APIs to draw overlays and read information. Inspired by the similar Stanford project.

The Stanford project, written in C++, hooks into the game's DirectX drawing to read text and model data so that it can play the game. My program, written in C#, is able to hook into the game and display an FPS counter and colorize textures. The transition from managed to unmanaged code (C# is managed, DirectX is unmanaged) slows down the frame rate to around 2 FPS even on a fast quad-core computer.

Tech Stack

• C#
  • EasyHook for DirectX API interception
  • SharpDX for a managed implementation of DirectX
  • NLog for logging

Interesting tidbits

• Of the 118 DirectX API functions, almost all are intercepted with proper marshalling between unmanaged and managed data types and structs
• Extensive program architecture, multiple library projects with an Injector to inject the DLL into the target process