└── README.md


/README.md:
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 1 | # GM6-Vista
 2 | 
 3 | What is this repo? 
 4 | - Patched executables for GameMaker 6 and 6.1a to allow it to run on Microsoft Windows Vista, and later versions
 5 | 
 6 | - This is NOT a crack or keygen for GameMaker 6.0, or 6.1a, this version still requires a valid GM6 or GM61a product key to unlock all features
 7 | 
 8 | How to apply the patch?
 9 | - Simply [Download the patch](https://github.com/KuromeSan/GM6Vista/releases/latest) for whatever version your using and extract the 7z file using 7-zip, 
10 | then copy the files "Game Maker.exe" and "rundata" into the install directory of GameMaker 6
11 | 
12 | 
13 | Technical details:
14 | OK, so the only reason why GameMaker 6.0, 6.1, and 6.1a dont run under modern versions of windows is: they were packed using ASProtect 1.3 
15 | 
16 | ASProtect is [Executable Packer](https://en.wikipedia.org/wiki/Executable_compression) designed to make it hard to [Reverse Engineer](https://en.wikipedia.org/wiki/Reverse_engineering) and or tamper with executable files- probably in an attempt to combat piracy. however this verison of GM is 17 years old now, so this isnt much of a concern these days 
17 | 
18 | these old versions of ASProtect stopped working with Windows Vista, because of its use of [Self Modifying Code](https://en.wikipedia.org/wiki/Self-modifying_code) which is no longer allowed by windows for security reasons.
19 | 
20 | because the GameMaker 6 main executable *and* game executables are packed with it, all GM6 games simply stopped working on all versions of windows, after Vista.
21 | 
22 | This patch simply removes ASProtect from the main executable, and runner executable & changes rundata validiation checks to match new data. 
23 | it also patches some hard coded offsets into the rundata executable for changing icons.
24 | 
25 | the rundata used here is the same one given to us by Mark Overmas in the GM6 to Vista converter, which is basically just the original rundata executable, (pre-packing) however as we dont have the original unpacked main executable, i had to use some unpacker tool .
26 | 
27 | 


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