RGBCTF soda pop bop Heap challenge
Use house of force and use one gadget to get a shell
Detailed explanation here : https://pwn-maher.blogspot.com/2020/07/hello-guys-this-is-another-write-up-but.html

Original writeup (https://pwn-maher.blogspot.com/2020/07/hello-guys-this-is-another-write-up-but.html).