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picoCTF 2022: credstuff

Author: Will Hong / LT 'syreal' Jones

Cryptography category Score: 100 Solved

Description

We found a leak of a blackmarket website's login credentials. Can you find the password of the user cultiris and successfully decrypt it?
Download the leak here.
The first user in usernames.txt corresponds to the first password in passwords.txt. The second user corresponds to the second password, and so on.

Hints

Hint 1 Maybe other passwords will have hints about the leak?

Summary

Just look up the corresponding password for the user. I loaded both files into lists in python and created a dictionary. The resulting password is ROT13 encrypted. Decrypt and you'll have the flag. For an automated solution look in solve

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picoCTF{C7r1F_54V35_71M3}