https://crackinglandia.wordpress.com/2016/10/02/h4ck1t-ctf-2016-quals-mexico-pentest-150-pts-write-u...

Original writeup (https://crackinglandia.wordpress.com/2016/10/02/h4ck1t-ctf-2016-quals-mexico-pentest-150-pts-write-up/).