[https://rawsec.ml/en/NeverLAN-CTF-2018-writeups/#100-even-more-basic-math-with-some-junk-scripting](https://rawsec.ml/en/NeverLAN-CTF-2018-writeups/#100-even-more-basic-math-with-some-junk-scripting)

Original writeup (https://rawsec.ml/en/NeverLAN-CTF-2018-writeups/#100-even-more-basic-math-with-some-junk-scripting).