https://rawsec.ml/en/Saudi-and-Oman-National-Cyber-Security-CTF-2019-Quals-write-ups/#50-i-love-images-stego

Original writeup (https://rawsec.ml/en/Saudi-and-Oman-National-Cyber-Security-CTF-2019-Quals-write-ups/#50-i-love-images-stego).