Interesting; thanks. Pugsy has found an explanation for several GG encryption systems, which I'll look through tomorrow, when the diphenhydramine HCL in my bloodstream has sufficiently worn off
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| Game Genie encryption routines... https://www.kodewerx.org/forum/viewtopic.php?f=2&t=3688 |
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| Author: | Lazy Bastard [ Wed Jul 18, 2007 7:29 am ] |
| Post subject: | Game Genie encryption routines... |
In adding functions to Majestic Porter, I'm interested in adding conversion utilities for, among other things, all of the Game Genie systems (decryption, encryption). However, I can only find reference on NES and SNES Game Genie encryption. Does anyone know anything about those of the Genesis, Game Boy, or Game Gear? |
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| Author: | Smalls1652 [ Wed Jul 18, 2007 7:45 am ] |
| Post subject: | Re: Game Genie encryption routines... |
Dial 911 for some help. |
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| Author: | Lazy Bastard [ Wed Jul 18, 2007 7:59 am ] |
| Post subject: | Re: Game Genie encryption routines... |
I found the rules somewhat ambiguous in that respect: "hacking help" belongs in this forum, but "questions about how to use codes" belongs in Dial 911; this pertains to neither, specifically. However, if a moderator or admin feels this belongs in Dial 911, that's fine. |
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| Author: | Lazy Bastard [ Wed Jul 18, 2007 8:59 am ] |
| Post subject: | Re: Game Genie encryption routines... |
Hmm...using a util called Game Genie Encoder/Decoder, I've mostly figured out the Game Boy/Game Gear system...most of which is more a mangling of the original address than actual encryption (obscurity, not security, heh): ABC-DEF-GHI - GB/Game Gear GG ZYXW VU - Raw code AB = VU C = Y D = X E = W F = (Z XOR 0xF) GHI = Here's where I'm not sure...the utility I mentioned calls the part of the code this affects the "Compare", though I've no idea what that refers to. I'll toy with it a little more later. For now, back to work. If anybody has a clue, let me know. |
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| Author: | dlong [ Wed Jul 18, 2007 9:38 am ] |
| Post subject: | Re: Game Genie encryption routines... |
Due to the small address size, the compare byte is usually used. For example, a GG code for the NES that patches 56 to address 0123 actually patches it to 0x0123, 0x10123, etc.; The compare byte checks and sees if the byte at the address its patching matches the byte you give it; that way, only one address is really patched instead of several. |
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| Author: | Lazy Bastard [ Wed Jul 18, 2007 8:58 pm ] |
| Post subject: | Re: Game Genie encryption routines... |
Interesting; thanks. Pugsy has found an explanation for several GG encryption systems, which I'll look through tomorrow, when the diphenhydramine HCL in my bloodstream has sufficiently worn off
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