John the Ripper known part of password

Question

For migration purposes i need to get the plaintext password for all our accounts, stored in the shadow file.

Our system uses usernames in the format "firstname.lastname" and password is either "firstname + single_number + single_letter" or "lastname + single_number + single_letter", like "firstname3p" or "lastname3p"

What is the correct way to use filters to extract firstname or lastname and try every combination of number + letter on them?

The correct way would be to use this opportunity to stop using easily guessable passwords. — A. Hersean, Feb 27 '19 at 10:49
This is more of a programming question than a security question. — schroeder, Feb 27 '19 at 13:47

score 0 · Accepted Answer · answered Feb 27 '19 at 13:26

0

In my opinion the best way to do that is creating a wordlist with all the possibilities using a script for example and then using that wordlist in John the Ripper

answered Feb 27 '19 at 13:26

Thiago Escobar

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John the Ripper known part of password

1 Answers1