Writeups

Introduction: # This is the writeup for the pwnmeCTF 2025 challenge called holy cow revenge². This one is going to be crisp and quick.

I created an Android based pwn challenge that involes exploiting a dynamic memory allocator using the webview interface.

This was a particularly unique and well-designed PyJail challenge featured in the Asian Cyber Security Challenge. Although I solved it during the contest using an unintended method.

This is a basic ROP Challenge that involves a technique called the ret2csu. We use this when there is a lack of gadgets.

Played InCTFj Quals this winter vacation. It was a fun filled ctf. Here we will discuss the pwn challenge called leaky pipes. Make sure to give the challenge a try before seeing this.

Here our main objective is to get a shell. The bug is plain and simple, it is an overflow to control the return address.

This is a pretty awesome challenge! Here we will be writing assembly code in x86 to read the flag file from the server. This is one of the easier challenge in pwnable.tw which is stack based.

I am proud to say that my team zh3r0 hosted its first CTF.