200 WCSCCTF Patchwork Panda

We were given a binary that had checks in place (cmp statements) that checked to see if something was true, and if it was continue with execution. All we had to do was change the byte for the op code. For example, jnz byte patching would show 75 x where…

200 WCSCCTF Jumpy

This challenge was two parts, the first part was overflowing the buffer of size, and the second part was overwriting the return address with the address of winrar. Since there was no alsr and we are given the binary, the address can be hard coded. The size needed to prime…

100 WCSCCTF Too Easy

This one as the name suggests, was incredibly easy and honestly probably worth too many points, but here's a writeup regardless. So we are given a binary tooEasy and was told that | Challenge by: nullp0inter | This one is almost too easy, get the flag! | nc wcscctf.org 8383 Opening up…