CatSystem2 Reverse Engineering

This page is the dedicated home to documenting knowledge about, and reverse engineering of the CatSystem2 cs2.exe and cs2_open.exe assemblies.

🚧 This page is a work in progress

Tools

The information documented here was found using the following decompiler and debugger tools:

• Ghidra - Decompiler: Analysis, Function ID, etc. (free, unlike IDA)
  • Ghidra on GitHub
• OllyDbg - Debugger: GUI, Breakpoints, and Memory/Register View
  • OllyDbg v1.10
  • OllyDbg v2.01
• ret-sync - Plugin: Debugger/Decompiler Synchronization
  • Ghidra Plugins
  • OllyDbg1 Plugin
  • OllyDbg2 Plugin

Internal Libraries

The main library of CatSystem2 is called "kclib", this can be seen with the strings being allocated all throughout the program of this exact text: "e:\prg-ares\dev-env\vs2013\kclib-dx9\include\..\kcClassBase\kcClassBase.h".

kclib contains classes such as kcImage, kcImageHg3,

• kcClassBase: universal base class
• kcFileBase: I/O base class
• kcBigFile: KIF Archive
• kcImage: image base class
• kcImageHg3: HG-3 Image
• kcImageHg2: HG-2 Image
• kcTaskBase: task base class, presumably runtime handling
• kcTaskFESScript: FES Screen
• kcTaskScript: CST Scene
• kcTaskZTExport: ZT Package