https://rawsec.ml/en/Saudi-and-Oman-National-Cyber-Security-CTF-2019-Quals-write-ups/#50-back-to-basics-web

Original writeup (https://rawsec.ml/en/Saudi-and-Oman-National-Cyber-Security-CTF-2019-Quals-write-ups/#50-back-to-basics-web).