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Tag: binary reverse

Endless Christmas X-MAS CTF Writeup

22 December 201827 November 2019

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…

Brute force a crackme file password with Python

13 February 20188 January 2020

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…

Getting started with Binary reverse engineering: an example

13 January 201813 January 2018

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…

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RSS Quick Math Intuitions

  • Projection methods in linear algebra numerics
  • Reproducing a transport instability in convection-diffusion equation
  • What is the Rossby number?
  • How do Dirichlet and Neumann boundary conditions affect Finite Element Methods variational formulations?
  • A gentle (and short) introduction to Gröbner Bases
  • What is the difference between Finite Differences and Finite Element Methods?
  • The role of intuitions in mathematics
  • A note on the hopes for Fully Homomorphic Signatures
  • Probability as a measure of ignorance
  • But WHY is the Lattices Bounded Distance Decoding Problem difficult?

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