It’s been a few months since I’ve posted anything. This is not to mean I have been idle. Indeed, rainbowsandpwnies has launched the haxathon, a challenge-based CTF type event that lasts more than 48 hours. I’ve begun a rewrite of Rainbows-And-Pwnies-Tools and a symbolic execution engine. To be fair, I’ve, “Started,” the symbolic execution a [...]
This post serves as a (hopefully soft) introduction to the MD5 cryptographic hash. It has been written to bring some of the people I work with up-to-speed on exactly how MD5 works in the hopes they will stop giving me strange looks when I talk about it. What is MD5? MD5 is a cryptographic hash. [...]
A Quick Background on Perfect Rainbow Tables Rainbow tables allow us to find plaintexts to cryptographic hash algorithms quickly. They are based off of Hellman Martin’s “A Cryptanalytic Time – Memory Trade-Off“. By including the step in the reduction function, Phillipe Oechslin was able to improve on Hellman Martin’s method, and we came up with [...]