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Date: Thu, 25 Aug 2011 14:10:07 -0500
From: Minga Redman <mingakore@...il.com>
To: john-users@...ts.openwall.com
Subject: Bug in -stdin with john-1.7.8-jumbo-5

I think there is a bug with -stdin in john-1.7.8-jumbo-5


#  cat LARGEFILE.txt |  john-1.7.8-jumbo-5/run/john -stdin
-pot:/tmp/asdf5.pot -fo:raw-md5 hashes.txt
amersfoort       (?)
alceste          (?)
Segmentation fault

versus:


#  cat LARGEFILE.txt |  john-1.7.8-jumbo-4/run/john -stdin
-pot:/tmp/asdf4.pot -fo:raw-md5 hashes.txt
..
..
(hundreds of cracks)
..
..
1973110          (?)
013016           (?)
guesses: 348  time: 0:00:00:13  c/s: 1417M  trying: <(^-^)> - ยดยดยดยด
Use the "--show" option to display all of the cracked passwords reliably


--------

In some cases - it never finds any cracks at all:


# cat *.dic |  john-1.7.8-jumbo-5/run/john -stdin -fo:raw-md5 /unknown-*
Using raw-md5 mode, by linking to md5_gen(0) functions
Loaded 7823 password hashes with no different salts (Raw MD5 [gen])
Segmentation fault


Ive tried it with linux-x86-mmx linux-x86-any generic  . All crash.

---------

update: I just test it with this - and it crashed as well
John the Ripper password cracker, ver: 1.7.8-jumbo-5 [linux-x86-64]

With strace: I see:

# cat keyboardwalk.dic | strace  ./john-1.7.8-jumbo-5/run/john -stdin
-pot:/tmp/adsf1.pot hashes
...
read(0, "1qazNHY^BGt5.;[=\n1qazNHY^BGt5+{:"..., 4096) = 4096
read(0, "&Ujm\n1qazNHY^5tGBmjU&\n1qazNHY^5t"..., 4096) = 4096
read(0, "^NHy6<Lp-\n1qazNHY^NHy6-pL<\n1qazN"..., 4096) = 4096
times({tms_utime=24, tms_stime=3, tms_cutime=0, tms_cstime=0}) = 4856420900
times({tms_utime=24, tms_stime=3, tms_cutime=0, tms_cstime=0}) = 4856420900
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
Segmentation fault




-Minga
@crackmeifyoucan

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