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Breaking hashes?

Read or post about compression. And decompression. Or ask questions how to decompress your files.
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Wobble
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Re: Breaking hashes?

Post by Wobble »

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Re: Breaking hashes?

Post by nicoli_s »

if you ever make any progress on the .diffuse textures used for mobs/chars lemme know, they are gving me a hard time atm
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Re: Breaking hashes?

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Re: Breaking hashes?

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Re: Breaking hashes?

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Re: Breaking hashes?

Post by nicoli_s »

i'm pretty sure the bone hierarchy is stored in .xac files, and yah I've gotten that far on the .diffuse files, but the problem is the dword after mipmap_height/width isn't always zero, it appears to be two separate words, and I've found that most of the time, when those are 0, everything is just simple dxt1, but if the other words are there, regular dxt1 doesnt work
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Re: Breaking hashes?

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Re: Breaking hashes?

Post by Rahly »

Wobble wrote:So:
4 + 0 = 0
12 + 4 = 16
44 + 20 = 64
168 + 88 = 256
332 + 180 = 512
I guess someone didn't do to well in math ;-)
"By nature men are alike. Through practice they have become far apart." Confucius (Analect 17:2)
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Re: Breaking hashes?

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Re: Breaking hashes?

Post by nicoli_s »

have you been able to get any of those textures to render correctly(with the extra words i mean), and .xac are in art.myp i'm pretty sure
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Re: Breaking hashes?

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Re: Breaking hashes?

Post by grimdoomer »

Hmm interesting topic. Well heres my 2 cents.

Hashes like MD5 and SH1 can be broken in a couple minutes. That is if you know the length of the string it hashes. If it hashes part of a file and it is somewhat small, it can also be broken within a reasonable time frame. It all depends on what you know, and how you can use it to get what you don't know.

Other checksums such as simple binary functions can be broken very easily. It all depends on how you code your breaking app and what info you have at the start.
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Re: Breaking hashes?

Post by zardalu »

Warhammer Online hash v1.6 released June 28 for the Warhammer 1.30 update at http://code.google.com/p/easymyp/downloads/list

With this new hash file you can extract about 400mb of new models/texures from the Land of the Dead update.

Has anyone made any progress on the .geom files?
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