7z hash problem, hashcat reports "Salt Value Exception"
#8
well, that seems to be a completely different issue. probably an issue with your hardware / configuration / setup.

I'm pretty sure if you test with a modern NVIDIA rig or similar that shouldn't be the case.

I try to focus on the problem with the 7-Zip hash here but of course you should also try to find a solution for the other problem (I think it doesn't have to do anything with 7-Zip and other algorithms might also be affected, just run hashcat -b).

Back to the original problem, I think we need to create a similar test hash for which we know the password that also has the exact same problem "output length of AES decrypt > data length" (compressed size > decompressed size, packed size > unpacked size).

With a full example that has exactly that problem it's much easier to troubleshoot.


The files I mentioned of course talk about the source code of hashcat ("hashcat sources" here https://hashcat.net/hashcat/ or better the most recent version @ https://github.com/hashcat/hashcat) of course you do not find the souce code in the binary release version. That's why I said it would be great if you could compile it yourself.

There are even build instructions for windows in the github repository: https://github.com/hashcat/hashcat/blob/...D_MSYS2.md and https://github.com/hashcat/hashcat/blob/..._CYGWIN.md (depending if you are using MSYS2 or CYGWIN)
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RE: 7z hash problem, hashcat reports "Salt Value Exception" - by philsmd - 10-21-2020, 07:50 PM