ret2me / writeups

Here I will be publishing my writeups from hacking & programming competitions.

WriteUps

Here I will be publishing my writeups from internationals hacking & programing competitions.

Hack-a-Sat

Satelite communication (write up comming soon)

In this challenge, our task is to gain access to the privileged commands in communication protocol (based on a real one used by ESA) what will give as a possibility to Hack-A-Sat.

HackTheBox CyberApocalypse CTF 2021

Controller (PWN)

Ret2Libc, Reverse engineering, Integer overflow and programming in Python
gives as possibility to hack into an aliens space station via a program dedicated to calculating resources on earth.

BCACTF

Stylish (WEB)

What can happen if we give users ability to change the color on the website. Oh... hack into administrator account, how is this even possible???

Time 2 Hack II (by: Polish intelligence agency)

(Flag 3)[https://github.com/Ret2Me/WriteUps/blob/main/CTFs/Time2Hack%202%20qualifications/flag3.md] (PWN)

One day I said to my friend that C is dangerous. As you can see even online login panel with 3 options can be vulnerable.

ImaginaryCTF

Speed (PWN)

Advanced challenge where the attacker has a few second to do a Ret2Libc attack on procedurally generated binary file.

UDCTF

(SeaEssAreEph)[https://github.com/Ret2Me/WriteUps/blob/main/CTFs/UDCTF/SeaEssAreEph/SeaEssAreEph.md] (WEB)

SeaEssAreEph is a funny WEB challenge where our goal is to hack a bank, get money and buy a flag. And everything only because of missing CSRF Token.