GoldenEye 007 Nintendo 64 Community, GoldenEye X, Nintendo 64 Games Discussion

[Kode-Z]

I came across a guide that explains how to XOR them to .MP3 and vice versa, but how would I go about actually doing it? I can't get my head around the process! Any help wpuld be appreciated!

http://www.gtamodding.com/index.php?title=ADF

[acceptable67]

I can't think of a way doing it in a hex-editor but this could definitely be done in C by parsing each byte in file to buffer then running through a loop and storing each new byte in a new array

Here is a small example I put together that would do the trick:

Code:

char *fBuffer;    char *nBuffer;    char* fileName    = "file.adf";    char* outFileName = "file.mp3";    FILE *fP;    size_t fileLength;    fP = fopen(fileName, "rb");       fseek(fP, 0, SEEK_END);       fileLength = ftell(fP);       fseek(fP, 0, SEEK_SET);       fBuffer = (char*)malloc(fileLength);       nBuffer = (char*)malloc(fileLength);       fread(fBuffer, 1, fileLength, fP);    fclose(fP);    for (int i = 0; i < fileLength; i++)    {       nBuffer[i] = fBuffer[i] ^ 0x22; //This is Bitwise XOR, does all the magic       printf("%2x -> %2x\n", fBuffer[i], nBuffer[i]);    }    FILE* fPO;    fPO = fopen(outFileName, "wb");        fwrite(nBuffer, 1, fileLength, fPO);    fclose(fPO);

I'm also going off the assumption the output will have a proper MP3 header.
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[Kode-Z]

Thanks!

I have a Mac as opposed to a PC, so I don't know how it can be done! My knowledge in the field is next to none. I have a hex editor, but wouldn't know where to start, or if it can even be done in the editor!

Can it be done via Xcode?

[acceptable67]

I believe it can be done in Xcode if you're willing to try that, but I have no experience in the IDE itself so you may have to make some tweaks to the source to prevent potential errors (as well as adding file handling checks). I assume you'll be able to pick it up from there. I would build you a command line executable to save hassle but you're on a different operating system and I'm not going to go about fiddling with a cross-compiler.
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Rare wrote:

Perfect Dark Forever.

[zoinkity]

Unfortunately most of the (useful) tools out there are either Windows or Linux. For instance, HexEdit can do bitwise operations over a range of bytes and, for more complicated stuff, run a macro some given number of times. Won't help a mac user of course.

You might have a scripting language installed. Python 3, same as what was below:

Code:

with open('filename.adf', 'rb') as f:     fin = f.read() with open('filename.mp3', 'wb') as f:     f.write(bytes([i^0x22 for i in fin]))

(Well, probably. Didn't actually test it or anything.)
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