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Date: Wed, 21 Sep 2011 08:25:48 -0500
From: "JimF" <jfoug@....net>
To: <john-dev@...ts.openwall.com>
Subject: Re: 1.7.8-jumbo-6-RC* on Mac OS X
One thing that recently changed, is that I modify the format structure, in
the md5_gen(29) format. However, I thought I allocated the format
structures I returned back to you, so they should not be in a 'static'
readonly segment. The 'do-inc-crack' does look strange. Possibly the
stack-frame is smashed in some way?? Could we have some variable that is
too big, corrupting the stack? Or something too small, that the strcpy
(listed in your email), is walking past the end?
Jim.
----- Original Message -----
From: "Solar Designer" <solar@...nwall.com>
> The reference to do_incremental_crack() in backtrace for a no-options
> invocation of "john" is puzzling. I think I don't believe it. Other
> than that, "john" and "john -te" actually crash in a different manner.
>
> (gdb) r
> Starting program: /Users/user/john/john-1.7.8-jumbo-6-RC6/run/john
> Reading symbols for shared libraries +++++. done
>
> Program received signal EXC_BAD_ACCESS, Could not access memory.
> Reason: KERN_PROTECTION_FAILURE at address: 0x00000000
> 0x0001f3be in md5_gen_SETUP ()
> (gdb) bt
> #0 0x0001f3be in md5_gen_SETUP ()
> #1 0x00020535 in md5_gen_SETUP ()
> #2 0x00020b1c in md5_gen_Register_formats ()
> #3 0x00078daf in do_incremental_crack ()
> #4 0x00079b74 in main ()
> (gdb) r -te
> The program being debugged has been started already.
> Start it from the beginning? (y or n) y
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