Original writeup: [https://github.com/jacopotediosi/Writeups/blob/master/CTF/2019/CSAW-Quals-2019/Web-Unagi-200/README.md](https://github.com/jacopotediosi/Writeups/blob/master/CTF/2019/CSAW-Quals-2019/Web-Unagi-200/README.md)