Date: Thu, 5 Nov 2009 21:35:39 +0300 From: Solar Designer <solar@...nwall.com> To: john-users@...ts.openwall.com Subject: Re: "No password hashes loaded" on Ubuntu 9.04 A couple of months ago, I posted the following: > This patch implements generic crypt(3) support. That is, if the > Unix-like system you run JtR on supports your desired crypt(3) hash type > natively, then JtR with this patch applied will also support that hash > type (albeit non-optimally). > > Right now, the switch statement in salt() is missing proper checks/code > for the "SHA-crypt" flavors, which means that JtR won't detect matching > salts for this hash type (and won't take advantage of them for faster > processing). (BTW, a related idea is to auto-detect the salt size - > slow but possible.) Yet JtR with this patch applied should be able to > crack weak "SHA-crypt" hashed passwords when running on a proper system. > Please test. The full posting (including the patch) is at: http://www.openwall.com/lists/john-users/2009/09/02/3 Additionally, I've since added the patch to: http://openwall.info/wiki/john/patches ftp://ftp.openwall.com/pub/projects/john/contrib/ This is john-18.104.22.168-generic-crypt-1.diff.gz - generic crypt(3) support. No one has followed up on my posting in here (bad!), but surprisingly there's a "video response" on YouTube: http://www.youtube.com/watch?v=ETjPnLmdNHg&hd=1 This video shows that the patch does in fact work on recent Ubuntu, cracking "SHA-crypt" hashes. :-) Alexander
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