Ghidra YSC

Ghidra Processor and Loader for YSC script format.

The project allows you to decompile/disassemble/reverse engineer YSC script files.

It's able to properly identify branches, switch structures, function calls, local variables, static variables, etc.

Compilation

To build the extension manually, install gradle and run

gradle -PGHIDRA_INSTALL_DIR=/path/to/ghidra

Usage

Follow the installation like described in the Ghidra docs.

To load a ysc file, export a ysc.full file from OpenIV or similar, and open it in Ghidra. It should then suggest YSC Loader and YSC Language for the project.

TODO

• Struct analysis
• Implement unimplemented instructions
• Improve documentation for opcodes
• A way to share global variable definitions across multiple script files. Also common signatures for script files would be handy.
• Native Function Analysis (mostly naming natives and setting arguments properly).
• Function Analysis
• Improve cspec default call prototype (so that the arguments aren't reversed).