I will reverse engineer a file format or game data and build a working tool

I take apart file formats, save data, password systems and game code, document how they work, and build tools on top of what I find.

My Red Earth project is a good example. I decrypted Capcom's arcade ROMs with my own Python and C++ scripts, traced the password routine through its assembly code in Ghidra and the MAME debugger, then released a ROM hack and a website that generates and decodes passwords. I'm also writing Open Factory Studio, a C++ editor for M.U.G.E.N characters, stages and screenpacks.

You get a written explanation of what I found, with offsets and structures, plus any scripts or tools I build. Everything is checked against real sample files, and as a QA engineer I test the edge cases too.

What I don't do: cracking, DRM or licence removal, cheats for online games, or anything that breaks the law or a product's terms. The work is for software and data you own or have the right to modify.