La Quête du sens For this challenge, we are given this audio. We need to find the name of the text that this song comes from. We know that the name of the woman we are searching starts with Mar…...

L’âme d’un poète et le coeur d’une femme This OSINT challenge is split in 4 parts. L’âme d’un poète et le coeur d’une femme 1/4 We are looking for a woman called Louise Colet. Looking at socia...

Subliminal In this chall, we had to recover the subliminal image. We are given a video where we can see a square that appear on each frame. The video can be found here. At first I tried to crea...

Heap In this chall we are given a .hprof file (available here). HPROF is capable of presenting CPU usage, heap allocation statistics, and monitor contention profiles. In addition, it can also re...

DevCorp In this chall we are given a log file of all the requests made to the Wordpress web page. Here is the access.log file. I found this website that allowed me to look at the log file easil...

Zéro pointé This chall is a bit of a reverse one. We had two files, one containing the following C code and the other with the compiled version of it: static void flag(int sig){ (void) sig...

UID For this chall, we had a really simple compiled C code. This code, analysed with Ghidra looked like this: undefined8 main(void) { undefined local_38 [44]; __uid_t local_c; local_c...

Tri sélectif This chall requires us to sort an array. But we don’t see the array (can’t know every values). We only can check two values to know which one is the greater, change the position of ...

T’es lent This chall is basically just about reading the source code. When we look at the website, we don’t see much, but in the source code, we find: So we jumpt to the URL /stage-generateur...

SPAnosaurus In this chall we had 3 files but only the image was useful. The above code makes us understand that this is a recursive function. The image of the signals, as said in the chall desci...