picoCTF 2023 – hideme

28 March 2023 – Written by Valentin Huber – in binwalk, ctf, forensics, and steg

Challenge

Every file gets a flag. The SOC analyst saw one image been sent back and forth between two people. They decided to investigate and found out that there was more than what meets the eye here.

Solution

binwalk -e hideme.png

This extracts a few files including one called secret/flag.png. This in turn contains the flag: