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+--- Thread: Hashcat Exhausted when using rules (/thread-4960.html)
Hashcat Exhausted when using rules - ankh2054 - 01-05-2016
Hi all,
Im trying to use STDIN and STDOUT with rules to ensure full GPU performance, but hashcat runs through it all within 5 seconds and states exhausted with no key found. Also GPU's are never used.
Using it without the rule works fine.
My rule creation
Code:
/mp64.bin -o sfxU.rule -1 ?u '$?1$?1'My command
Code:
/mp64.bin ?u?u?u?u?u?u | ./cudaHashcat64.bin --hash-type=2500 -r rules/sfxU.rule /cracking/wireless/testhashcat.hccapRE: Hashcat Exhausted when using rules - epixoip - 01-05-2016
Look at your progress vs rejected -- 100% rejected. This is likely because of the pre-rule input length check (I thought that was fixed though?) But your command doesn't make any sense, why not just do -a 3 '?u?u?u?u?u?u$?u$?u'
RE: Hashcat Exhausted when using rules - ankh2054 - 01-05-2016
thanks, the reason for doing it this way is because STDOUT and STDIN cannot output enough words to fully utilise the GPU's power.
The GPU keeps on having to wait for the output to further process.
My rules and command is based on the following article, unless this is now outdated.
http://hashcat.net/wiki/doku.php?id=brute_force_in_oclhashcat_plus_original
RE: Hashcat Exhausted when using rules - ankh2054 - 01-05-2016
Saying the above i've just noticed this in the article:
Quote:If we attack a so called “slow” algorithm, that is one of the following algorithm, we can skip this section:
phpass, MD5(Wordpress), MD5(phpBB3)
md5crypt, MD5(Unix), FreeBSD MD5, Cisco-IOS MD5
md5apr1, MD5(APR), Apache MD5
Domain Cached Credentials2, mscash2
WPA/WPA2
So probably won't make any difference then.
RE: Hashcat Exhausted when using rules - atom - 01-06-2016
Yeah it shouldn't matter much with length slow algorithms. You can try to trick oclHashcat by simply adding 2 static chars to your input mask so that they dont reject and use ']] $?1$?1' in your rule file generation mask