john-users - John The Ripper Incremental Mode

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Message-ID: <CANXcZ02DZDOsmkySUqfOB9Wuoq6TytU7bySfH7NbirJLSMBxEg@mail.gmail.com>
Date: Tue, 29 Jan 2019 23:20:38 +0200
From: Andrej Rybicki <andrej.rybicki@...il.com>
To: john-users@...ts.openwall.com
Subject: John The Ripper Incremental Mode

I'm trying my password strength with John The Ripper. It has Incremental
mode which basically brute forces every character:

[Incremental:Alpha]
File = /usr/share/john/alpha.chr
MinLen = 7
MaxLen = 9
CharCount = 26

But none of john descriptions tells how to use incremental mode with
patterns.

For example:

Password between 7 to 9 characters.

First character Uppercase. Other characters - alphabetic.

John has rules like:

?i ?a ?a ?a ?a ?a ?a ?a ?a

But rules are for wordlists. I tried my word list as an empty line, but
that did not catch up.

Are there rules for incremental mode?

Or there are some ways like: Incremental:Upper + Incremental:Alpha, where
upper is set to MinLenand MaxLen = 1. You get the idea.

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