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Date: Fri, 29 Apr 2022 03:02:48 -0700
From: Eric Oyen <>
Subject: Re: Way to create specific wordlist

I came up with a method using PWGEN (a linux password generator). You can use all 95 characters on a keyboard with lengths set to anywhere from 1 to 1000 (including spaces and full words. The only drawback I see to this method: rainbow file size in excess of 1 petabyte. Also, unless you have a cluster, searching a list that large will take an inordinately long time.


> On Apr 28, 2022, at 4:13 PM, Solar Designer <> wrote:
> Hi Johny,
> For "only once", you can use --external=Filter_NoRepeats along with any
> mode - you do not even need to have the resulting wordlist written to a
> file.  For "or twice", that's trickier - perhaps write a different
> external mode filter.
> BTW, this:
> has a password with 3 F's - "YFAQYFFV" - so you seem to be wrong about
> what those passwords can (not) be.
> Alexander
> On Thu, Apr 28, 2022 at 02:56:25PM +0200, Krekan wrote:
>> Hello, I would like to ask what options of John could I use to make wordlist 
>> which will contain 8 character combinations which can contain each character 
>> only once or twice. For example word specific is not good only for example 
>> specifgh. Every character from the charset can be used only once or twice in 
>> password candidate.     This is useful for testing strength of UPC networks 
>> passwords which are created in such way.
>> For more explanation look at:
>> Example passwords shown there are of a kind which I would like to create using 
>> John.
>> Thanx for help
>> Johny Krekan

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