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Message-ID: <20130406024913.GA21047@openwall.com>
Date: Sat, 6 Apr 2013 06:49:13 +0400
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: What am I doing wrong?

Sandra,

What you were doing wrong was using a non-informative message Subject.
This almost made me delete the message without reading, thinking that it
was spam.  A better subject would have been e.g. "cracking MD5 hashes",
or even just "MD5".

On Fri, Apr 05, 2013 at 11:20:09PM -0300, Noilson Caio wrote:
> change your echo something like the merge between passwd and shadown

This makes me wonder: as a list moderator, should I be rejecting
messages with wrong advice on technical issues, even when they're
obviously well-intentioned?  I reluctantly approved Noilson's posting
this time, in part because some active list members' postings bypass
moderation and they sometimes contain wrong advice too. ;-)

> like this:
> 
> bash-4.2# echo "onu:c231df9a8f34cee959cbc6bcca4a9286:::::" > teste
> bash-4.2# echo "tdc:f5ba7db80ba2d7d7b650119d52fcd8d0:::::" >> teste
> bash-4.2# ./john  teste
> Loaded 4 password hashes with no different salts (LM DES [128/128 BS
> SSE2-16])

Sandra specified that those were (presumably) MD5 hashes, so getting
John to load them as LM is of no help.  The extra colons (":::::") make
no difference anyway - the hashes may be mis-loaded as LM regardless.

She was getting "0 password hashes cracked, 0 left" in response to
"john --format=MD5 --show /tmp/hashs" for three reasons at once, every
one of which was sufficient on its own:

1. The "--format=MD5" option requests md5crypt, not raw MD5.

2. "--show" is for showing previously cracked passwords, not for initial
cracking of hashes.

3. There's no raw MD5 support in "official" versions of JtR (such as the
1.7.9 release); it is a jumbo feature.

And yes, our historical use of "MD5" vs. "raw-MD5" for format names
keeps causing confusion for new users...

Alexander

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