Context We are given a windows log file (Microsoft-Windows-PowerShell4Operational.evtx) Let’s open it in the Event Viewer: We have only 9 logs, it will make things easier. In the first log,...

Context We are given the capture made with Salae Logic 2 (dystalosaurus.sal) We install Salae Logic 2 and open the capture: By zooming it gives something like this. It seems to be only on...

Context We are given an executable “aaarg”. Using ghidra, I spoted this: It seems to be the flag. I opened the executable in radare2 to have a better view of the flag. Then I used cyberc...

Context We are given: an executable (zero_pointe) the source code of the executable (zero_pointe.c) Let’s take a look at the source code: #include <stdlib.h> #include <stdio.h&g...

Context I analyzed the file with Ghidra: The code is pretty simple: It puts the value of geteuid() in a variable that I called uid. It asks the user to enter a username. If the value o...

Context We are given the source code of the application and a base code to connect to the application and interact: App: import os def usage(): print('Actions possibles:') print(' - "compa...

Context Here is the website: By following the “plus d’info” button, we end up here: By following “Postuler”, we end up with nothing: There’s nothing in the source of the offer or on t...

Context We are given: the code of the machine (machine.py) a code to translate the assembly code into hex format in order to send it to the server (assembly.py) the code present on the se...

Context This chall is an introduction to assembly code. Assembly code is important to know in reverse engineering or pwn challenges. This challenge uses the same machine as this one : FCSC 2023...

LFI / RFI File inclusion occurs when the user can control the file that will be loaded by the server. LFI (Local File Inclusion) -> The server loads a local file. RFI (Remote File Inclusion) ...