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Message-ID: <20180227220121.GA20686@openwall.com>
Date: Tue, 27 Feb 2018 23:01:21 +0100
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: dmg file with lost password
On Tue, Feb 27, 2018 at 04:35:22PM -0500, Ian Boyd wrote:
> I believe I did get Johnny to work using the dmgsjohn. file and chose the dmg for the file format in the drop down.
> The program has currently been running for a total time of 2:17:48:33 and has worked through Single rule, Wordlist rule, and has been working on incremental rule for some time. But it's my understanding that incremental typically takes the longest time. Is this correct?
> Can this process take a long time?
Yes, it can take forever, unless it cracks your password first. To have
a better chance of cracking the password, you'll need to focus the
attack using whatever information about the password you can recall.
But first of all you should really want to "show us the full output from
JtR (copy-paste from a Johnny window)". Without that, we can't be
confident you ran it correctly and that it is doing what it should be.
By incorrect invocation, it is possible to have it spend a lot of time
processing without it actually doing anything even remotely reasonable.
Another thing you might want to do is generate a test dmg file with an
obviously very weak password and have JtR crack that. This will serve
to verify that you do things right and will show you what the output of
a correctly running attack should look like.
Alexander
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