Date: Fri, 18 Apr 2014 13:22:16 +0400 From: Aleksey Cherepanov <lyosha@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: proof of concept converter of rexgen-like syntax into john rules On Fri, Apr 18, 2014 at 01:05:15PM +0400, Aleksey Cherepanov wrote: > On Fri, Apr 18, 2014 at 12:05:37AM +0200, magnum wrote: > > On 2014-04-17 23:58, magnum wrote: > > >On 2014-04-15 21:26, Rich Rumble wrote: > > >>On Tue, Apr 15, 2014 at 3:11 PM, magnum <john.magnum@...hmail.com> wrote: > > >> > > >>>One side effect when working with this is it makes me want a sed2rules > > >>>generator too, perhaps even in combination with rexgen ;-) This would > > >>>finally solve the "complex leet permutations" problem (like "replace > > >>>any of > > >>>[aA] with any of [aA4@] *and* any of [eE] with any of [eE3] *and* any of > > >>>..."). > > >>> > > >>Just a quick note, I have great success with "1337" rules that don't > > >>replace ALL instances... But I get what you were saying :) > > >>http://www.openwall.com/lists/john-users/2010/08/03/4 > > > > > >I bet that's very common. Doing what I describe above, we will create > > >all combinations of "only some instances" as well as "all instances". > > >But it would result in a large number of rules I guess. > > > > On second thought that won't happen they way I described it. This is a > > complex issue! > > I've wrote a script to generate the rules. It is a proof of concept > again. > > It creates replacements for some instances, not for all instances. > $max_count controls amount of replacements of one letter. > $max_pos controls variety of positions of the letter. > If $max_count is higher than amount of letters in the word than we > replace all but we could be sure about the condition. Replace all rule > (s) is not used. I found a mistake in my script. Sorry! Fixed version is attached. Thanks! -- Regards, Aleksey Cherepanov View attachment "t.pl" of type "text/x-perl" (2625 bytes)
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