Date: Fri, 29 Sep 2017 16:18:53 -0800 From: Royce Williams <royce@...ho.org> To: john-users@...ts.openwall.com Subject: Re: RFC: Hashkiller Rosetta Stone (Apologies for the duplicate post; I've arbitrarily picked the other one: http://www.openwall.com/lists/john-users/2017/09/29/6 ... as the "real" one, and will tie this thread off) On Fri, Sep 29, 2017 at 2:29 PM, magnum <john.magnum@...hmail.com> wrote: > On 2017-09-29 17:13, Royce Williams wrote: > >> I'm working on a Hashkiller Rosetta stone (list of upload formats >> supported >> by Hashkiller, and how to use those modes in hashcat, john, and MDXfind. >> >> A draft is here: >> >> https://gist.github.com/roycewilliams/28a9e940e7cd37268ceeac4962bda757 >> >> Any help/tips appreciated. I don't know the underlying algorithm of many >> product-specific formats, so I'm almost certainly missing some obvious >> ones. >> >> My future ambition is to expand this concept to be a Rosetta Stone for the >> superset of all formats supported by any known product. Small steps first. >> :) >> > > Most formats consisting of a combination of simple primitives, like > 'md5(md5($pass).md5($salt))' are possible in JtR on CPU using the "dynamic > compiler" format. That very example would be written like this: > > $ ../run/john -test -form:dynamic='md5(md5($pass).md5($salt))' > Benchmarking: dynamic=md5(md5($p).md5($s)) [128/128 AVX 4x3]... DONE > Many salts: 12448K c/s real, 12573K c/s virtual > Only one salt: 5458K c/s real, 5404K c/s virtual > > It can do many crazy combinations that is (probably) not used anywhere: > > $ ../run/john -test -form:dynamic='sha1(md5(md4($pass).$salt))' > Benchmarking: dynamic=sha1(md5(md4($p).$s)) [128/128 AVX 4x1]... DONE > Many salts: 5816K c/s real, 5816K c/s virtual > Only one salt: 5340K c/s real, 5340K c/s virtual > > Sometimes it's not very fast, but it's always there - very handy. Note > that any time there is a dedicated format for your need, you can bet that > one is faster, and sometimes a LOT faster, than this "dynamic compiler" > stuff. > Indeed. As noted in the other thread, I will try to make that clear in the table somehow when I move it from a gist to something more durable. > On another note, I'd add input syntax (or sample hashes) to the Rosetta > Stone if I were you. Sometimes they differ, especially in how/where you > specify the salt. Hashcat uses hash:salt while JtR never EVER has a ':' > within a ciphertext (it's impossible, by design, and that makes the pot > file unambigous). > Sometimes the various crackers also differ in whether they want the salt > as plaintext or hexified, and (if plaintext) they might have different ways > to hex-escape stuff (eg. hashcat $HEX[cafe] vs. JtR $HEX$cafe) > Yes, syntax would be key for a Rosetta Stone! I do intend to make sure to include it. Making it directly verifiable by example is the best way to ensure that people can be confident in the accuracy. Thanks! Royce
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