Install a wireguard pod on kubernetes

May 21, 2020

I used to have an OpenVPN network to connect to machines I could not/did not want to expose to internet, each new computer I wanted to connect was a matter of generating new RSA keys/certs, it was efficient and usable but a bit tedious to configure at times (the documentation is pretty well built so I found the answers to all my questions pretty often). I discovered wireguard and decided to give it a try. This post is mostly to store the commands and configuration I used to get it working in a kubernetes environment.

Write-up (à chaud) du challenge badge de la Nuit du Hack

Jun 28, 2017

Cette année, nous [Amré, Jean, Mathieu, Thibault] nous sommes rendus à la Nuit du Hack, et avons tenté le challenge “Black Badge”. Ce challenge permet de gagner un badge collector qui offre à son possesseur une entrée gratuite ad vitam æternam. Intriguée, notre équipe spontanément formée s’est lancée à l’aventure. Ce court write-up a pour vocation d’expliquer comment on a procédé pour accéder au Saint Graal (et aussi d’évoquer les différentes difficultés qu’on a rencontré).

Dynamic DNS with docker

May 22, 2017

I’ve been fiddling with dockers lately and have become a little lazy about the IP addresses of the containers. As lazy as the programmer that I am, I decided to configure DDNS with Bind.

This way, I could simply reach out container.sea instead of 172.17.0.22.

Removing marketing links in e-mails with Sieve

May 22, 2017

E-mail marketing companies track the link opened in the e-mails to offer a better vision of what worked and what did not to the client. The tracking method consist to rewrite every links in the e-mail with links to a server of the marketing company which then redirects the customer to the right page.

This leads to having some weird and unintellegible links in the e-mails we receive every day, like so :

AdBlock on mobile without root

May 22, 2017

My smartphone is under android and used to be rooted. Many applications refuse to start if they detect that the phone has been rooted (either via scanning running processes or simply by looking for a su executable).

On the other hand, I do not like advertisements and find more and more of them in the applications I use every day.

Archlinux on RAM via PXE

May 8, 2016

Having a room filled with computers able to boot over PXE, either a classroom or a LAN Party during sleeptime, or having a computer bios locked but with PXE before the hard drive, gave me the desire to design a computer to quickly boot on a system and perform all kind of operations I needed.

So came the idea of setting up a server to boot on an already installed OS, and this OS to be a Archlinux easily updateable (so not a liveCD).

This could be useful in order to boot quickly a cluster, automate tasks (retrieve the SAM/shadow file of a computer, install an OS, …) and/or for trolling.

sCTF.io Q1

Apr 19, 2016

A week ago, I took part of the sCTF.io 2016 Q1 with a friend. This is the first time I take seriously part to a CTF. We managed to score 1700 points and ranked 7th of about 700 teams (Funpetitor for us as we do not live in US).

Here are a few notes about problems we solved and found interesting.

My setup

Apr 6, 2016

I have spend many hours on the internet, discovering new technologies and comparing them to understand their assets and how they could help me on my projects.

During one of those explorations, I found usethis.com, a website which to answer the question “What do people use to get stuff done?”.