Date: Wed, 21 Mar 2012 13:27:27 +0100 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: raw-MD5 bug (john.pot loading) in latest git On 03/20/2012 11:48 AM, magnum wrote: > On 03/20/2012 11:16 AM, Raphaël Rigo wrote: >> Hello, >> there's a bug with raw-MD5 and john.pot in latest git : >> >> $ cat coin >> test:098f6bcd4621d373cade4e832627b4f6 >> >> $ cat testpot >> 098f6bcd4621d373cade4e832627b4f6:test >> >> $ ./john --pot=/tmp/testpot --format=raw-md5 /tmp/coin >> Loaded 1 password hash (Raw MD5 [SSE2i 12x]) >> No password hashes left to crack (see FAQ) >> >> $ ./john --pot=/tmp/testpot --format=raw-md5 --show /tmp/coin >> 0 password hashes cracked, 1 left >> >> if testpot is empty, john fills it with : >> $dynamic_0$098f6bcd4621d373cade4e832627b4f6:test >> >> so it seems there's bug with pot loading. it is also buggy with >> "generic" target. > > This might be a bug, and it's a problem if you have old (pre > 1.7.8-jumbo8 or so) untagged entries in the pot file. > > It might have "happened" here: > http://www.openwall.com/lists/john-dev/2011/10/24/10 but it was supposed > to read bare (old) hashes from the pot file, but always store new ones > with tags. The above apparently has nothing to do with it, and this problem is not format specific (it happens with untagged NT hashes too for example). This is only a problem with -show, everything else works as it should. This is a problem in 1.7.8-jumbo-8 and later, I haven't tried older versions. I'm not quite sure what to do about it, or why it happens. When loading for cracking or -show=left, hash is rejected as already cracked (i.e. correct behavior). But when doing -show, hash is considered not cracked. I can't see why! I'm giving up for now. magnum
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