ctf writeup

OverTheWire Krypton (Levels 0-9)

OverTheWire is an educational hacking site with different “war games” meant to teach different topics (for example, Natas teaches web security). Krypton is a short war game focused on introductory cryptography concepts. Level

OverTheWire Natas Level 33 Walkthrough

With level 33 of Natas, we are randomly back to PHP after a brief journey using Perl. This is the final level of OverTheWire’s Natas series! This walkthrough covers how Phar deserialization

OverTheWire Natas Level 32 Walkthrough

This next level of Natas is solvable using the techniques in the previous post, but this walkthrough will cover the same techniques, skipping over the read-only version of the Pinnacle Attack from “Perl

OverTheWire Natas Level 31 Walkthrough

This next level of Natas is another Perl-focused one. The attack vector used is from a 2016 presentation called “Perl Jam 2“, describing a 20 year old bug. Despite (or maybe because of?