Welcome to another challenge from pwnable.kr. This time we’re going to work on flaws made while generating pseudo random numbers.
In order to keep this challenge streak alive, I decide to play with another one from pwnable.kr called flag. This time our task is purely reverse enginnering, since we’re only given a binary, with no source code, no listening applications or ssh connections.
Another challenge from pwnable.kr will show us how to perform a simple buffer overflow attack.
Let’s start another challenge from pwnable.kr called collision, which is next one in Toddler’s Bottle category.
After feeling a big need to improve my knowledge of pwnable category, I decided to check out pwnable.kr and start from the beginning.