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Date: Mon, 22 Jan 2018 11:57:48 -0600
From: Eric Kent <johnripperuser18@...il.com>
To: john-users@...ts.openwall.com
Subject: No password hashes loaded in password file generated from DMG using dmg2john.py

I have an Apple DMG created over 5 years ago that is encrypted using either
AES-128 or AES-256 for which I have forgotten the password.  I have a
limited character list of possible characters included that may be included
in the password (twelve possible letters in lowercase or capital form, 2
numbers, 2 symbols) and the password is complex in that it may include
lowercase letters, capital letters, numbers, or symbols, but it is simple
in length.

I ran dmg2johh.py to generate a password file (dmg2john.c will not compile)
and then executed John on this password file, receiving a "No password
bases loaded" response.  I created a new DMG with a known password and
repeated the above process, and John immediately found the password. I also
repeated the above process on a preexisting DMG from several years ago and
it succeeded as well.  Only the DMG in question that I need to open gives
the "No password bases loaded" response.

Interestingly, the password files of the new DMG created as a test case and
the subject DMG that I am trying to open are not similar whatsoever in
format or length.

Would this be indicative of an an idiot user, an incompatible encryption
format, a corrupted DMG, or some larger system or John issue?

John the Ripper 1.7.3.1 *Pro* for Mac OS X
Mac OS X version 10.12.6

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