Exploiting PHP's weak comparison.
Full write-up: [https://github.com/rsa-ctf/write-ups/tree/master/2019/confidencectf#web---my-admin-panel](https://github.com/rsa-ctf/write-ups/tree/master/2019/confidencectf#web---my-admin-panel)

Original writeup (https://github.com/rsa-ctf/write-ups/tree/master/2019/confidencectf#web---my-admin-panel).