HackyEaster was awesome again. From a technical point of view there weren’t too much new things, but the creativity of the provided challenges made it really fun. Including the little teaser challenge there were a total amount of 37 challenges. These challenges were divided into different levels. You could only proceed to the next level, if you have earned enough points in the current level. I really liked that new idea.Continue reading “Hacky Easter 2021 writeup”
|This year’s HACKvent hosted on competition.hacking-lab.com has been as great as every year.
There was a total amount of 28 awesome challenges with varying difficulties.
This article contains my writeup on the machine
Rope from Hack The Box. I really enjoyed the box, since it provides a total of three custom binaries, which are supposed to be exploited 🙂
The article is divided into the following parts:
– Initial Recon
– Leak Memory Address
– Exploit Format String Vulnerability
– Escalating from john to r4j (readlogs)
– Local Recon
– Libc Leak
– Final Exploit
|This year’s HACKvent was hosted on the brand new Hacking-Lab 2.0 plattform. Each day from the 1st of december until the 24th a new challenge is published raising in difficulty. The flag format changed from
|HV19.H1 Hidden One
HV19.H2 Hidden Two
HV19.H3 Hidden Three
HV19.H4 Hidden Four
HV19.03 Hodor, Hodor, Hodor
HV19.04 password policy circumvention
HV19.05 Santa Parcel Tracking
HV19.06 bacon and eggs
HV19.07 Santa Rider
|HV19.08 SmileNcryptor 4.0
HV19.09 Santas Quick Response 3.0
HV19.10 Guess what
HV19.11 Frolicsome Santa Jokes API
HV19.12 back to basic
HV19.14 Achtung das Flag
|HV19.15 Santa’s Workshop
HV19.16 B0rked Calculator
HV19.17 Unicode Portal
HV19.18 Dance with me
HV19.20 i want to play a game
HV19.21 Happy Christmas 256
|HV19.22 The command … is lost
HV19.23 Internet Data Archive
HV19.24 ham radio
This years online qualification for the Google Capture The Flag finals (ctftime.org) ran from 22/06/2019, 00:01 UTC to 23/06/2019 23:59 UTC.
As last year, there were plenty of diversified challenges, which were worked out very well.
I tried to take at least a look at as much challenges as possible and solved the challenge Quantum Key Distribution, which was relatively easy based on the amounts of solves. Within this article I want to share my writeup on this challenge.
The writeup is divided into the following sections:Continue reading “Google CTF 2019 (Quals) – Quantum Key Distribution”
There has been a really interesting RSA crypto challenge called Blind, which I would like to share with you in this writeup.
The article is divided into the following sections: