Day2 Pwn

I heard great things about pwn. Its time to finally go through it from Beginning to End!

I am using Medium as a repo for my notes from the pwn courses.

Starting with the challenge for pwn

There is a clear crashing of the program. What I learned recently to debug this is core dumps. What this does is grabs the programs memory when there is a process crash. I initally thought my 0x400000 adresss was causing the crash for my program. Eventually through core dumps it became clear it was me referencing an non existent address. Duh.

What I have been learning throughout this program is how critical it is to understand the memory is stored linearly. This is why in CTFs I heavily rely on offsets from a memory address to access data.

My goal for tomorrow is to finish all the lectures are the problems