hacking, software, it-security
 |
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 HV18-xxxx-xxxx-xxxx-xxxx-xxxx to HV19{...}. After all I managed to solve all 28 challenges 🙂 |
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”
The VolgaCTF 2019 Qualifier (ctftime.org) took place from 29/03/2019, 15:00 UTC to 31/03/2019 15:00 UTC.
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:
→ Challenge description
→ What does the script do?
→ Blind RSA Signature
→ Retrieving the Flag
