Rating:

No captcha required for preview. Please, do not write just a link to original writeup here.https://hell38vn.wordpress.com/2020/04/14/ctf-tghack-2020-misc-poke-142pt/

Original writeup (https://hell38vn.wordpress.com/2020/04/14/ctf-tghack-2020-misc-poke-142pt/).