picoCTF 2023 – Reverse

28 March 2023 – Written by Valentin Huber – in ctf, grep, rev, and strings

Challenge

Try reversing this file? Can ya? I forgot the password to this file. Please find it for me?

Solution

The provided file seems to be a binary. First step is to check if the flag is in there as plain text:

strings Reverse | grep picoCTF

picoCTF{H
Password correct, please see flag: picoCTF{3lf_r3v3r5ing_succe55ful_1de05085}