My Challenges

Challenge Philosophy

I love to make creative and unique challenges that push the players to really think about and investigate potential vulnerabilities, instead of pulling a ready-made exploit from GitHub.

I usually divide my challenges into one of three categories:

1. TOY challenges are all about analysing and exploiting vulnerabilities in toy cryptographic primitives I make myself. The players will attack these primitives directly. This will test a player’s cryptographic knowledge and their ability to cryptanalyse using the provided source code.

2. IMP challenges are all about exploiting flaws in the implementation of secure cryptographic primitives. The players will attack the security of these primitives by abusing their flawed implementation. This will test a player’s knowledge on the limitations of the used primitives and their ability to exploit these limitations.

3. PZL challenges are somewhat looser challenges that challenge the player’s math, logic, and problem solving skills.

In need of Crypto challenges for your CTF? Get in touch!

Overview of Published Challenges

2023

2022

2021

And more, just waiting to be published ~ !