xarkes' blog

This is a place where I put all kind of things I have in mind, with a focus on IT security and hacking in general. You'll find topics related to CTF challenges, reverse engineering, game hacking, etc.

Latest posts

Replacing a toggle switch with a transistor

Aug 8, 2024

Electronics

Replacing a pysical toggle switch into an automated solution in order to make a SATA to USB adapter ...

Bitwarden code review

Jun 30, 2024

AuditOpen-Source

An analysis of Bitwarden's desktop client source code in an attempt to understand its encryption mec...

Coding and watching a series on one screen

Jun 2, 2024

LinuxConfig

This is my setup on how to have a translucid text editor on top of a video in order to code and watc...

Avoiding TLS certificate leakage with Nginx

Mar 6, 2024

LinuxInfra

Having a Nginx configuration file with `server_name _;` is not enough for it to match any not suppor...

Pwn2Own Austin 2021 - Defeating the Netgear R6700v3

Apr 3, 2022

ReverseExploit

A writeup on how we got remote code execution on the Netgear R6700v3 during Pwn2Own.

SSTIC 2021 - Challenge writeup

Jun 8, 2021

CtfReverseExploit

A writeup of the famous SSTIC challenge (edition 2021) written in French.

Fetching GitHub pull requests with git

Jun 2, 2021

GitTip

How can one fetch a pull request from GitHub in order to test it and make sure everything works as e...

DEFCON quals 2021 - Exploit for dummies challenge writeup

May 10, 2021

CtfLinuxDwarf

Writeup for the "Exploit for dummies" challenge of DEFCON qualifiers 2021 featuring gdb, ELF craftin...

FCSC 2021 - The Offenders reverse engineering challenge writeup

May 3, 2021

ReverseWindows

Writeup of "The Offenders" challenge from FCSC 2021, emulating Windows Defender using mpclient and d...

Making an in-game Lineage 2 Bot

Dec 30, 2020

ReverseWindowsGameBot

How to make a Lineage 2 Bot? This blogpost explains how I made a quick bot for Lineage 2 Classic, wr...

SSTIC 2020 - Challenge writeup

Jun 12, 2020

CtfReverseExploit

A solution to the famous SSTIC challenge (edition 2020) written in French.

Advent 2019 - Genetic Mutation challenge writeup (First Blood)

Dec 26, 2019

CtfLinux

Using a nice trick to quickly solve the "Genetic Mutation" challenge of Over The Wire's advent calen...

Hack.lu 2019 - Baby Kernel 2 challenge writeup

Dec 9, 2019

CtfExploitKernelLinux

Writeup of the challenge "Baby Kernel 2" from Hack.lu 2019 Capture The Flag event. How to get root w...