This is a writeup for the Endless Christmas challenge, md5 hash 866c92038d6e9fc47db4424f71f6167a (download binary). It appeared in the X-MAS CTF, and it’s a Reverse challenge. Using afl with Radare we…
Tag: hacking
Brute force a crackme file password with Python
I was to reverse a file for a challenge, MD5 hash 85c9feed0cb0f240a62b1e50d1ab0419. The challenge was called mio cuggino, purposefully misspelled with two g letters. It asks for three numbers. The…
The one time pad and the many time pad vulnerability
The scope of this article is to present the one time pad cipher method and its biggest vulnerability: that of the many time pad. The one time pad: what it…
Getting started with Binary reverse engineering: an example
For a challenge in a university security class, I was given this file to crack: reverse1. I started with reverse0, which was considerably easier than the second one. In this post I…
A method for calculating pattern relevance in a text
This article aims at presenting a method for computing the relevance of a given string (pattern) in a text. This algorithm is at the core of my WordPress plugin Smart…
