RaRCTF 2021 - Return of EmojiDB

A nice intro to heap challenges, featuring tchache and the unsortedbin.

August 21, 2021 · 9 min

CVE-2021-22204 - Recreating a critical bug in ExifTool, no Perl smarts required.

This writeup explains how to reverse engineer the security patch and craft an exploit for CVE-2021-22204, without any real Perl knowledge.

April 26, 2021 · 8 min

NahamConCTF 2021 - Zenith

In this challenge, we write a custom GTK module to elevate our privileges and gain root access.

March 14, 2021 · 4 min

ALLES!CTF 2020 - ALLES!Craft

This challenge has you rout a minecraft client though an in-game computer to hack an otherwise secure minecraft server.

September 8, 2020 · 7 min