75 CTF.HackUCF.org Mem_Test

We are given a binary, and running the application gives us the following output after entering aaaa ------Test Your Memory!------- 8bGyUdjA5Z I know that mine is fine...see? : 0x8048980 Let's see how good your memory is... >aaa sorry, your memory sucks So straight away it seems like we…

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…