Lettres volatiles In this challenge we are given a Windows home directory of the user C311M1N1. When looking around, we can find a zip file containing a pdf that is protected by a password: T...

Les Mystères du cluster de la Comtesse de Ségur For this challenge, we need to recover the flag from a folder containing information about a cluster. When looking at the files, we see a folder ...

Le Mystère du roman d’amour In this challenge, we are given a swp file available here. By reading about this type of file we find that SWP files, also known as swap files, are temporary files cr...

Recette In this challenge, we are given the hex string: 32 69 31 73 34 69 31 73 31 35 64 31 6f 34 39 69 31 6f 34 64 31 6f 33 69 31 6f 31 35 64 31 6f 32 32 64 31 6f 32 30 64 31 6f 31 39 69 31 6f...

Dessine-moi une courbe elliptique In this challenge, we are given the following code and its output. After some research on the elliptic curves, I found this blog that explains how they solved ...

ASCON Marchombre In this challenge, we are given an ASCON encrypted text and multiple values to be able to decrypt it. ASCON is a lightweight authenticated encryption algorithm designed to prov...

Le sot For this challenge, we need to access the bucket cloud-intro-challenge. I first try to connect using the aws command but it didn’t work because we don’t have credentials. I then found th...

Le Cluster de Madame Bovary Enumeration For this challenge, we are given a virtual machine. When we arrive on the machine we first run the kubctl command to find pods: As we can see, there i...

Harpagon et le magot For this challenge, we are given an ssh connection to a server. The hint we are given is that Harpagon n'est pas très doué et n'a jamais réussi à utiliser sa cassette.. Whic...

L’Antiquaire, tête en l’air Recover Information In this challenge, we have access to a memorendum.txt file. This file contains hex text. I tried decoding it using an online tool and find two li...