Writeup at: https://h4krg33k.medium.com/picoctf-writeups-web-exploitation-writeups-93ffe48a3b5f?source=friends_link&sk=990ce0d544c6833550e521e315772263

Original writeup (https://h4krg33k.medium.com/picoctf-writeups-web-exploitation-writeups-93ffe48a3b5f?source=friends_link&sk=990ce0d544c6833550e521e315772263).