[https://rawsec.ml/en/WPICTF-2019-write-ups/#100-suckmore-shell-linux](https://rawsec.ml/en/WPICTF-2019-write-ups/#100-suckmore-shell-linux)

Original writeup (https://rawsec.ml/en/WPICTF-2019-write-ups/#100-suckmore-shell-linux).