john-users - several problems with JtR + jumbo 9 and/or omp-des-7

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Date: Thu, 16 Dec 2010 19:48:55 +0100
From: bartavelle <bartavelle@...il.com>
To: john-users@...ts.openwall.com
Subject: several problems with JtR + jumbo 9 and/or omp-des-7

1/ NT support for x64 in 1.7.6-jumbo9 does not work properly :

$ john -w:lmcracked -rules:nt -stdout | grep coin.CO2010
words: 96  time: 0:00:00:00 100.00% (ETA: Wed Dec 15 14:24:24 2010)
w/s: 2400  current: coin.co2010
coin.CO2010

$ john -w:lmcracked -rules:nt ntdump
Loaded 1 password hash (NT MD4 [128/128 X2 SSE2-16])
guesses: 0  time: 0:00:00:00 100.00% (ETA: Wed Dec 15 14:24:43 2010)
c/s: 369  trying: cOIN.Co2010 - coin.co2010

$ echo coin.CO2010 | john -stdin ntdump
Loaded 1 password hash (NT MD4 [128/128 X2 SSE2-16])
coin.CO2010      (coin)
guesses: 1  time: 0:00:00:00  c/s: 5.26  trying: coin.CO2010

It seems that only passwords stored with set_key(xxx, 1-8) work. This
problem was reported to me from a friend using my variation of the
official tree, and I reproduced it with the official jumbo patch. This
was tested with gcc 4.4.3 and ICC.


2/ the nice value is only effective for the first thread with openmp,
but I'm sure this is already known ...


3/ I ran into random problems with ctrl-C + restore, where the .rec file
was flock'ed. This only happened with openmp enhanced ciphers.


I did not investigate any of these problems, so this is merely a bug
report with no proposed fix, and perhaps not much detail. I'll try to
investigate the NT problem when I will have more free time.