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Date: Mon, 13 Aug 2018 11:08:25 -0400
From: Matt Weir <>
Subject: Convert JtR rules to HashCat format

Is there a way to output JtR rules when they have had their
preprocessor rules expanded? The goal is to convert JtR rules to a
format that Hashcat can understand.

I see that it looks like bartavelle did something similar already:, but I was wondering if
that functionality was already in JtR.


I really like using JtR's preprocessor rules when creating rules by
hand. Aka I can do things like:

A0'test[0-9][0-9]' to pre-pend "test" + 2 digits to all dictionary
words. Hashcat doesn't support that, so to make use of that you need
to expand the rule out into 100 different rules. Also pre-pending
strings gets weird since you have to do them in reverse. Aka
pre-pending "test" would be:


There's times though that I like using Hashcat, so I'm looking for the
ability to easily convert between my JtR rules to something hashcat
can use.


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