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Date: Sun, 31 Jan 2016 19:16:06 -0500
From: Rich Rumble <richrumble@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: Custom incrementals?
On Fri, Jan 29, 2016 at 11:01 PM, japhar81 <japhar81@...il.com> wrote:
> I swear I've tried to RTFM, and I'm sorry for what's probably a recurring
> question, but I'm totally stumped.. I know the password I'm after is;
> 1. 7-11 characters in length
> 2. Starts with a letter (may/may not be capital)
> 3. Might use $ # @ ! but no other special characters
>
> Could someone clue me in on how I properly generate and run an incremental
> rule for that case? I've been trying to piece it together for hours off
> posts on the list and the docs, but I'm still nowhere..
Incremental is a mode, and not really a rule or ruleset. Incremental
attempts to "learn" from cracked passwords or known plain-texts. If
you wanted to use incremental, you'd want to first feed it a bunch
(many thousands if not millions) of passwords. Then incremental will
start to use trigraphs to do a smart brute force of passwords. Instead
of theses being the first passwords: aaaaab, aaaaac, aaaaad, aaaaae
incremental will try these samila, samily, shanne, shanna, angel,
anger, samina, saming, shanda etc..
I don't think this is the mode for you to try first. You should try
something like this:
>7 c $[$#@!] (input length is GT 7, capitalize, append each of these $ # A !)
This is what I put in john.conf:
[List.Rules:gt7]
>7 c $[$#@!]
This is what I ran
./john.exe -w=password.lst -rules=gt7 -stdout (you won't use stdout)
Password$
Password1$
123456789$
etc...
If you want to look at some of the crazy cool KoreLogic rules in Jumbo
you can find some really good stuff in there. What I posted is a very
simple rule, and you can create many more. You can also use the
--min-length and --max-length switches for keeping the input words
between 7-11.
-rich
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