Root Me : plateforme d'apprentissage dédiée au Hacking et à la Sécurité de l'Information

PNG - EMD

Thibz — 2025-06-23T18:18:13Z

Our agents discovered that a group of Breton extremists were communicating with each other via postcards depicting the region's landscapes. We have managed to intercept one image and are convinced that it contains information vital to dismantling this group.

Some information to help you :
– Pixel group size is 2
– The size of the hidden message is 892 characters.
– The image must be divided into groups containing 2 pixels, one after the other on the x-axis.
– No secret key has been used during encryption, so there is no random permutation of pixels.

Good luck !

- Steganography

Genius ID

LetMeR00t — 2023-05-10T13:01:08Z

Recover the flag hidden behind this steganography technique.

- Steganography

EXIF - Metadata

Isis — 2022-03-28T08:29:59Z

Our sad friend pepo got lost ! Can you find where he is ?

The password is the city where pepo is located.

- Steganography

Mimic - Dummy sight

extiop , AnthoLaMalice — 2021-11-22T08:17:36Z

A childhood friend knows that you work in cybersecurity, and he thinks he has received a fraudulent email containing two attachments. He asks you to check that it is not malicious.

- Steganography

ELF x64 - Duality

extiop , AnthoLaMalice — 2021-11-22T08:16:54Z

The reverse engineering intern has found a binary that looks perfectly normal to him, however, your senior colleague tells you that it is strange. Find the information hidden in this executable.

- Steganography

APNG - Just A PNG

extiop , AnthoLaMalice — 2021-11-22T08:16:22Z

Your joking colleague challenges you to find the message hidden in this animation.

- Steganography

Poem from Space

Cryptanalyse — 2020-07-15T16:52:23Z

Deeply understand the meaning of this famous poem to validate this challenge.

- Steganography

Yellow dots

LetMeR00t — 2019-09-29T09:29:42Z

You attend an interview for a forensic investigator job and they give you a challenge to solve as quickly as possible (having the Internet).
They ask you to find the date of printing as well as the serial number of the printer in this document.
You remain dubitative and accept the challenge.

The answer is in the form :
hh:mm dd/mm/yyyy SSSSSSSS
with
– hh : the hour of the event
– mm : the minutes of the event
– dd : the day of the event
– MM : the month of the event
– yyyy : the year of the event
– SSSSSSSS : the serial number

- Steganography

Hide and seek

swap89 — 2019-09-22T09:43:40Z

These 3 files were extracted from a USB key used by Jean-Kevin to store a backup of his passwords.

The validation password is his password for root-me.org.

- Steganography

Kitty spy

LetMeR00t — 2018-07-09T14:24:55Z

Find the flag of the challenge through this heavy picture.

- Steganography