W3ndige Student Beginners's journey through the world of security, programming and system administration. In love with GNU/Linux and cryptography.

Pwnable.kr - mistake

Today we’re going to learn a lot about operator priority, and why some of mistakes made in this topic can be so devastating. Great example of that will be a challenge from pwnable.kr called mistake.

Summary of 2017

Another year, another summary. I’m kind of sad that this year is coming to an end, as 2017 made me develop my skills more than every other year summed together. But I have plans, big plans for the future, which some of them, I’m going to briefly introduce in this post.

Pwnable.kr - random

Welcome to another challenge from pwnable.kr. This time we’re going to work on flaws made while generating pseudo random numbers.

Pwnable.kr - flag

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.

Pwnable.kr - bof

Another challenge from pwnable.kr will show us how to perform a simple buffer overflow attack.