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#303248 - 19/10/2007 16:45 Cracking passwords on zip files
andym
carpal tunnel

Registered: 17/01/2002
Posts: 3996
Loc: Manchester UK
Someone at work has archived a load of stuff into a password-protected zip file. They now can't remember the password. Any pointers to something that could brute-force the p/w overnight?
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Andy M

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#303249 - 19/10/2007 16:54 Re: Cracking passwords on zip files [Re: andym]
wfaulk
carpal tunnel

Registered: 25/12/2000
Posts: 16706
Loc: Raleigh, NC US
Several ZIP vendors have their own proprietary encryption. Is it one of those or is it the standard ZIP encryption?

Googling "zip crack" returns a lot of results. AZPR seems likely.


Edited by wfaulk (19/10/2007 17:00)
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#303250 - 19/10/2007 16:59 Re: Cracking passwords on zip files [Re: wfaulk]
andym
carpal tunnel

Registered: 17/01/2002
Posts: 3996
Loc: Manchester UK
I'm pretty sure it's the just the standard encryption. Other protected files created by the same person can be opened with the Info-ZIP version of unzip on one of my linux boxes.
_________________________
Cheers,

Andy M

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#303251 - 19/10/2007 17:05 Re: Cracking passwords on zip files [Re: andym]
tman
carpal tunnel

Registered: 24/12/2001
Posts: 5528
You got a plaintext? If so then use pkcrack

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#303252 - 19/10/2007 17:16 Re: Cracking passwords on zip files [Re: tman]
andym
carpal tunnel

Registered: 17/01/2002
Posts: 3996
Loc: Manchester UK
No, I don't have any of the original files to use as a comparison.
_________________________
Cheers,

Andy M

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#303253 - 19/10/2007 22:17 Re: Cracking passwords on zip files [Re: andym]
frog51
pooh-bah

Registered: 09/08/2000
Posts: 2091
Loc: Edinburgh, Scotland
I'd second AZPR - it's not the fastest I've seen, but unless you want to fork out for a good chunk of cash, it does the job.
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Rory
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