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Date: Tue, 29 Jan 2013 21:21:52 -0800 (PST)
From: Anthony Tanoury <tanoury@...oo.com>
To: "john-users@...ts.openwall.com" <john-users@...ts.openwall.com>
Subject: Re: can't get jtr to ID this


>----- Original Message -----
>From: magnum <john.magnum@...hmail.com>
>To: john-users@...ts.openwall.com
>Cc: 
>Sent: Tuesday, January 29, 2013 1:48 AM
>Subject: Re: [john-users] can't get jtr to ID this
>
>On 29 Jan, 2013, at 2:21 , Solar Designer <solar@...nwall.com> wrote:
>> On Mon, Jan 28, 2013 at 06:58:06PM -0500, tanoury wrote:
>>> Here's the hccap (greasedjtr.hccap) converted to john format:
>>> http://home.comcast.net/~A_Tanoury/greasedjtr.hccap
>>> 
>>> Here's the password:
>>> http://home.comcast.net/~A_Tanoury/password.txt
>> 
>> 63 chars?  Is this a stress-test for the tools?  Thank you for it!
>> Dhiru - please get these sample files onto our wiki. :-)
>
You guys are terrific! Glad my samples were good for something :)


Great, I have requested such a test vector! I will include it in all versions.
>
>
>>> I'm using john-1.7.9-jumbo-7-Linux-x86-64 and it has worked fine. Here's 
>>> my command line that has worked fine with other WPA passwords:
>>> ./john --wordlist=password.txt -fo=wpapsk greasedjtr.hccap
>>     
>> It works for your password here, with all of: wpapsk, wpapsk-opencl, and
>> wpapsk-cuda.  I tested with bleeding-jumbo.  Maybe there was some issue
>> we've fixed since 1.7.9-jumbo-7.
>
>It
 was unfortunately by design: Jumbo-7 had a totally uncalled for 
limitation of 15 characters in all versions of wpapsk. I dropped that 
limitation for the revised (split kernel) opencl format and later also 
in then in CPU/CUDA versions. Latest code in unstable has a password 
length limit of 63 (which is the IRL limit) and a max ESSID length of 32
 or so (which should be the IRL limit but there are contradicting 
evidence - anyway that is pretty long and I recall it currently is 
limited by SHA-1 block size vs. optimizations).
>
Thanks for the great info.  It's wonderful that you guys are on top of things!



>> ... I've just tested unstable-jumbo as well.  wpapsk and wpapsk-cuda
>> resulted in:
>> 
>> Loaded 1 password hash (WPA-PSK PBKDF2-HMAC-SHA-1 [32/64])
>> *** buffer overflow detected ***: ./john terminated
>> ======= Backtrace: =========
>> /lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x37)[0x7f9e023a1007]
>> [...]
>> 
>> (similar in both cases).  However, wpapsk-opencl cracked the password
>> just fine.
>> 
>> Maybe there's some bug we happened to fix between unstable-jumbo and
>> bleeding-jumbo, or maybe it's just somehow hidden in the latter.  Either
>> way, we need to fix it in unstable-jumbo as well, because that's likely
>> what we'll base the next -jumbo release on.  (bleeding-jumbo is about
>> preparations for an even later release.)
>> 
>> magnum - can you take a look, please?
>
>Sure, this will be fixed ASAP in unstable.
>
>magnum
Thanks for all the great work. It's no wonder John the ripper is best in class! Thanks again guys!

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