Security and Linux random stuff

Insomnihack CTF 2019 - pwn write-up RustyOracle

I'll make a very small write-up about the challenge I've created for the 2019 Insomnihack CTF event that takes place in Switzerland, Geneva. TLDR: just grab all the source code from RustyOracle. The

Radare2 cheat sheets

I'm new to radare2, and I'm beginning to like it a lot. But the commands are sometimes hard to remember and when you're used to gdb+peda it's not that easy at all.

ctf

Defcon 2015 Quals - Babyecho Writeup

This was an cool challenge which was worth 1 point. But nevertheless we enjoyed solving it. The binary is 32bit and striped: $ file babyecho_eb11fdf6e40236b1a37b7974c53b6c3d babyecho_eb11fdf6e40236b1a37b7974c53b6c3d: ELF 32-bit LSB executable, Intel 80386,

ctf

Defcon 2015 Quals - mathwhiz solution

Category: Baby's First Points: 1 The information given to us: mathwhiz_c951d46fed68687ad93a84e702800b7a.quals.shallweplayaga.me:21249 After connecting to it we can see it's giving us mathematical operations and he's waiting for the

Small introduction to ROP and format string

As the title indicates, this is a very small introduction to return oriented programing (ROP) and format strings for people that don't yet know what this techniques are and what they are used