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VideoGameVirtuoso, posted Tue Mar 01, 2016 1:09 pm (11713)

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Hello everyone,

I have been experiencing difficulties extracting "GunBound.xfs" and "gunbound0.xfs" using quickbms and the xenesis script. Whenever I attempt to execute the script, this error shows up for either files:



I am uncertain as to how to progress from this point. I checked other threads in this forum for similar issues, but they have not provided me much of a lead. Can someone please explain why this occurred, and if possible, provide some resolution?

The files are below:

https://mega.nz/#!FcRxiAKL!qYjDRrtsvObxhH37rvbQxyMSpJ_-3ddLaJaBARvq9Ec

https://mega.nz/#!gBZUXIhJ!RJ0MSGqqy_QmGjKbU7nGcPb0xJWYa85-l6DHoNF1nPs

aluigi, posted Tue Mar 01, 2016 3:15 pm (11715)

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I guess it's a custom format.
*0.xfs is probably obfuscated with a custom obfuscation like:
tmp = byte[i] * key[i];
if(tmp & 1) byte[i] = tmp;
or similar.
I will check it when I will have some free time.

VideoGameVirtuoso, posted Fri Mar 04, 2016 10:38 pm (11784)

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Unfortunately I have no idea what to do with that information you provided Luigi, but at the minimum, I should probably do a few tutorials and hope to discover how that can be used.

aluigi, posted Sat Mar 05, 2016 3:34 pm (11794)

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Don't consider those info so correct, it was just a quick output from offbreak without additional analysis.
Maybe it's just an hashing algorithm and not related to the decryption that instead may be performed with classical block cipher algorithms.