Recent content by JanErikGunnar

  1. J

    Hacking Help decompressing/compresing "game.bin.z" from VC game

    Sorry, I meant Metal Slug 2. MS3 indeed use AES. I'm not really sure I understand what problem you are facing? (FYI, I don't think AES encrypted games use zlib, they use LZMA instead. Not really sure LZMA is more or less difficult than zlib, there are external libraries available for both.)
  2. J

    Hacking Help decompressing/compresing "game.bin.z" from VC game

    To clarify - Metal Slug 3, Magical Drop 3 and Spinmaster definitely works with the zlib that vcromclaim is using. Are you saying e.g. Samurai Showdown 3 is using a different zlib version than those? zlib AFAIK is the "original" library, what libraries did you try that didn't work? BTW, I was...
  3. J

    Hacking Help decompressing/compresing "game.bin.z" from VC game

    Not really, I just use zlib in Python, this is literally all the code in vcromclaim to decompress them: import zlib decompressed = zlib.decompress(compressed) HOWEVER I don't own any of the games you mention, if they use a different algorithm I don't know (and vcromclaim probably isn't able...
  4. J

    Hacking All-New NEOGEO game.bin.z (first-gen) Generator & iNJECTOR for Wii VC :D

    It MIGHT be. The troubles I think you might have is: - Knowing which encodings/file formats to use. vcromclaims just does things like "this file has an ACM header, that means we need to decode it with the ACM algorithms". Going in the other direction, you would have to determine if the file...
  5. J

    Hacking All-New NEOGEO game.bin.z (first-gen) Generator & iNJECTOR for Wii VC :D

    Not true anymore! :) My fork of vcromclaim is able to automatically build the AES key, decrypt, and extract most of the "crushed" games, it SHOULD be possible for you to reverse all the algorithms. The biggest problem is the generation of the AES key which is absolutely ridiculous, but now you...
  6. J

    Hacking Help decompressing/compresing "game.bin.z" from VC game

    Hello! It only took 11 years but I recently updated my fork of vcromclaim to automatically calculate the encryption key and decrypt/decompress most games now. :) I can clear up some things: Some WC NG games are raw (at least two different file formats exist) Some (bin.z) are compressed with...
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