Date: Tue, 28 Jul 2015 23:42:17 +0200 From: magnum <john.magnum@...hmail.com> To: john-users@...ts.openwall.com Subject: Re: unable to extract hash from 7z archive On 2015-07-28 23:13, Matthew Smith wrote: > I don't think I encrypted file names, so when I run the "7z2john.py" > script, I get this message: > > file.7z : 7-Zip files without header encryption are *not* supported yet! > > From googling, I see threads where an author mentions adding it in the > future, but on github the file hasn't been updated in over two years. I've > tried searching for a later version but I can't find it. Unfortunately we haven't implemented it yet. I was hoping the missing functionality was just within the conversion tool. > I've used "7z2hashcat.pl" to get the hash, but when trying that hash file > in john it doesn't seem to want to load. Maybe I am doing something wrong > in the commands? > > C:\johnomp\run>john --format=7z outfile.hashes > No password hashes loaded (see FAQ) I suppose this settles that oclHashcat can crack your hash (provided you have a GPU) but we can't. Well it was worth a try. BTW you probably need a GPU anyway - 7z hashes are very hard to crack. So maybe buy a cheap-ish GPU and try oclHashcat? magnum
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