0x31 0x00 ; push local var 0 (score) 0x10 0x64 ; push int 100 0x20 ; add 0x30 0x00 ; pop local var 0
| Legitimate | Questionable | |------------|---------------| | Learning from a game's implementation | Cheating / modding without permission | | Recovering lost source code of your own game | Piracy / re-releasing as your own | | Bug fixing for abandonware (no source available) | Bypassing trial/registration checks | | Translation / fan patches | Extracting assets for other games | | Security research / malware analysis | Removing DRM | Game maker exe decompiler
Decompiling someone else’s game without explicit permission is often a violation of copyright law (DMCA 1201 in the US, CDPA in the UK, EU Copyright Directive) and EULA terms. 3. How Game Maker EXEs Are Structured A typical Game Maker .exe contains: 0x31 0x00 ; push local var 0 (score)
altar extract mystery_game.exe output_dir/ This yields a folder with sprites/ , sounds/ , objects/ , scripts/ , rooms/ in native Game Maker project format. 0x10 = push constant int 0x11 = push
0x10 = push constant int 0x11 = push constant real 0x20 = add 0x21 = sub 0x30 = pop local var 0x31 = push local var 0x70 = call script 0x80 = if false jump A decompiler maps these back to high-level GML: