https://medium.com/@y.shahinzadeh/waf-evasion-base64-parameter-asisctf-2018-quals-good-waf-question-write-up-web-task-c8454d33ba4d

Original writeup (https://medium.com/@y.shahinzadeh/waf-evasion-base64-parameter-asisctf-2018-quals-good-waf-question-write-up-web-task-c8454d33ba4d).