Competition's Write-ups

2025

5 Challenges by cryptax
Bilge Alarm by Quentin Stiévenart Lucas Bajolet
Conference badge by Jean Privat
Containers by rkletr
Containers by Jonas Lépine
Fuel Management System by s_lck
Gift Shop by Étienne Ducharme
Hit the Jackpot by Kyle Bouchard
LED Display Controller by Eric Hogue
Memory Corruption by Jeremy
Misc by hellnia
Motor Sensors by Jean Privat
News of the Seas by Hisham Ladha
Numberstation by Marx314
Remora by Nic-Lovin
Restaurant Information Portal by Sideni
SailorKids by Marx314, Valesca
Slot Machine by Kyle Bouchard (strptr)
Soldering village challenge by Jean Privat

2024

Badge Addon - Phospholipid by Padraignix
Embryogenesing by Jean Privat
Excretory System by Klammydia
Gastric Mucosa System by Snowfield
Genetic System by Julien Robert
Inner Ear by Sideni
Intestinal System by Klammydia
Intestinal System by Dvorhack
Linguistic Memory System by Albino Gengar
Mirror System by Eric Hogue
Mirror System by Albino Gengar
Mirror System by Sideni
Mitosis System by Sideni & Jean Privat
Motor System by Hellnia & Jean Privat
Musculoskeletal System by OrganicTea
Photographic Memory System by s_lck
Retinal System by Choupisson
Somatic Nervous System by Eric Hogue

2023

Annual Review by Eric Hogue
ASKG.O.D (SQL Challenge) by Eric V
ATM Network by Tristan Gosselin-Hane
Badge LED Challenge 1 by Sagefault
Badge LED Challenge 2 by Sagefault
Badge LED Challenge 3 by Sagefault
Badge LED Challenge Bonus by Sagefault
Cafeteria by Jean Privat & Sideni
Candy Machine by Sagefault
Code Pipeline 1 - Prettier by Jean Privat & Hellnia
Desk Surveillance Publisher by Niftic
GOD Code Pipelines by Eric Hogue
Hackademy - Inclusion by Eric Hogue
HR Complaints by Sylvain
I Got 99^2 Problems by Eric Hogue
Key Casting by Jean Privat & Hellnia
Look Within Myself by Shanks
Look Within Myself by Eric Hogue
NorthSec 2023 - ATM Network Track Writeup by Maxime Nadeau
NSEC 2023 - N64 - Document Dropper 2 Reverse Engineering by padraignix
Office Surveillance by SamuelYvon
Orchestry by Eric V
Practice Math! by Sagefault
Reversing the Xtensa ESP32 by Sagefault
Spreadsheet by JackMc
Write-up Windows Track (ATM Network) - Northsec 2023 by Rayan Bouyaiche

2022

[NorthSec CTF 2022] - Shellcode sandbox by Niftic
[NSEC 2022] Marketing Email Template by Jose Apari-Pantigozo
candy_machine writeup (8 points) by gsilvis
N64 ROM Reverse Engineering (NorthSec 2022) by Jack
NorthSec 2022 Writeup - Marketing Email Template by Eric Hogue
NorthSec 2022 Writeup - Tako SSO by Eric Hogue
NorthSec 2022: Rego Prototype Review by Robert Babaev
NorthSec 2022: Tako SSO by Robert Babaev
NorthSec Hackademy by lolkatz
NSEC 2022 - N64 - ROM Reverse Engineering by padraignix
NSEC 2022 - Safe Cracking by padraignix
NSEC22 Mycoverse 1 by Jean Privat & Luis & Philippe Pepos Peticlerc & Marcan
NSEC22 Mycoverse 2 by Jean Privat & Luis & Philippe Pepos Peticlerc & Marcan
NSEC22 VFCrypter by BarbeRousse
OuYaYa intranet - Windows Track by Étienne Ducharme
Portabello 53 - Bargaining by outlandishlizard
Portobello - Anger by Nitrate
Portobello - Bargaining by Nitrate
Portobello - Denial by Nitrate
Portobello - Depression by Nitrate
Portobello 53 - Anger by Stephen McKeon
Portobello 53 - Bargaining by Stephen McKeon
Portobello 53 - Denial by Stephen McKeon
Portobello 53 - Depression by Stephen McKeon
Several NorthSec 2022 Warmup Write-Ups by Nitrate
Spore by outlandishlizard
The Legend of Shiitakoin Early Access by Stephen McKeon
The Legend of Shiitakoin Early Access by wez
VFT Crypter by Xornithologist
Warmup: Logically - Bonus Flag by Stephen McKeon

2021

Badge Write-up by Olivier Laflamme
Badgelife - Firmware RE by padraignix
Badgelife - Main Flags by padraignix
Choir of Infinite Verses by padraignix
Crypto / Crapto Century by reenigne
dontstopthefuzzing by Lucas Bajolet
Goldsmith's Guild Part 3 by Alexandre-Xavier Labonté-Lamoureux
Goldsmiths' Guild Part 1 by Zuyoutoki
Herbal Purity (1/3) by Jean Privat & Sideni
Herbal Purity (2/3) by Jean Privat & Sideni
Herbal Purity (3/3) by Jean Privat & Sideni
Impurity Assessment Form by Samuel Erb
Kinder Market by Allan Wirth
Knight's Siege Arsenal Monitoring Hub by padraignix
Librorum Perfide by Jean Privat & Marcan2020
Nestadia (Part 1) by Alexandre Beaulieu
Nestadia (Part 2) by Alexandre Beaulieu
Northsec Capture The Flag Preparation by lolkatz
Northsec Wizard Academy by lolkatz
Rare Metal Sequencer, pt. 1 by Lucas Bajolet & BarbeRousse
Rare Metal Sequencer, pt. 2 by Lucas Bajolet & BarbeRousse
Reading through the clouds by ecapson
Rules by Jean Privat & Al.
Scammed Again by Jean Privat
Scammed Again + Goldsmith's Guild + YesWeHack by noonker
Scriveine Book Copying Platform by Jean Privat & Pourliver
SSRF 101 – 103 by Tristan Dostaler
The Cabal by BarbeRousse
The Cabal + Trivia Desjardins + Crapto Century by jayjay7777
USB PCAP Forensics: Barcode Scanner by Émilio Gonzalez
USB PCAP Forensics: Graphics Tablet by Émilio Gonzalez
Wizard Chat by reenigne
Wizard Hackademy SQL Injection challenges by Mykk-a
Wizard Hackademy: Mentalism by Eric Hogue
Wizard Hackademy: Open Redirect by Eric Hogue
Wizard Hackademy: SpellQueryLanguage by Eric Hogue
Wizard Hackademy: Spellrialize by Eric Hogue
Wizard Hackademy: The Cabal by Eric Hogue
YesWeHack by reenigne
YesWeHack by Jean Privat
Zencastle (Cryptography) by George Silvis

2020

[VIDEO] Time Clock Backdoor Exploit (Hack the Time) by r0kit
Crack! Crackmes level up by Taowa
Cyber Beats NSEC 2020 Write up by Frédéric Vincent
Failing Revenge - nsec 2020 CTF by stargravy
Hack the Time Nsec2020 Write-up by Laurent Bouchard & Martin Pouliot
Last Minute Homework - nsec 2020 CTF by stargravy
NorthSec 2020 Crackmes by padraignix
NorthSec 2020 Exam Solutions Challenge Writeup by Gabriel Plouffe
NorthSec 2020 Write-Up: Acrossword Puzzle by Guillaume Ross
NorthSec 2020 Writeup: After Party by alxbl
NorthSec 2020 Writeup: Essay by alxbl
Northsec CTF Writeup: Failing revenge by Emile Fugulin
NSEC 2020 - Dreamcast by padraignix
NSEC20 Hack the time by Lucas Bajolet
NSEC20 Math Homework by Jean Privat
NSEC20 QR-Code. Part 1/2 by Frédéric Vachon
NSEC20 QR-Code. Part 2/2 by Jean Privat
NSEC20 WEAKHASH by Sideni
Nsec2020: Dreamcast Challenge by Jeremy Ouellet
Nsec2020: SSH Client challenge by Jeremy Ouellet
Poetry essay for NorthSec 2020 team SharedSec by Marx314
Prom After Party Nsec2020 Write-up by Martin Pouliot
SSH-Client Nsec2020 Write-up by Martin Pouliot
The Truth About Mr. Smiley Walkthrough by JaneBdemented
Write-up "Dreamcast Japanese Imports" NSec 2020 Challenge by jglaurin

2019

[NSEC 2019] DOOM by scud & icecr4ck (RE-Dojo)
Neurosoft is recruiting part 1: re_challenge3 by Alexandre-Xavier Labonté-Lamoureux
NorthSec 2019 — Windows Track Writeup by Martin Dubé & Stéphane Sigmen
NorthSec CTF 2019 Part 1: DOOM by act_gardner
NorthSec CTF 2019 Part 2: Java API by act_gardner
NSEC2019 - vision chip by Sylhare
NSEC2019 DEFEC8ED Walkthroughs by Jax

2018

[NSEC 2018] Mars Analytica (20) by scud
Eddison Space Launch by flAG{EEI-UQAM}
My CTF experience @NorthSec 2018 by Zuzana Hromcova
New Cloud Blockchain Document Storage Service by flAG{EEI-UQAM}
NorthSec 2018 (Multiples Write-Ups) by Matt Langlois
NorthSec 2018 Mars Analytica by Toshi Piazza
NSEC 2018 : babyre0-1 by Sylhare
NSEC 2018 : Life on Mars by Sylhare
NSEC 2018 crypto leak writeup (Chinese article) by tanomy
NSEC 2018: Silent Meeting Write-up (aka The Chip Bag Challenge) by Xavier de Carné
Traveling Around Mars With C Emulation (Part 1) by Joan Calvet

2017

An entertaining eBPF XDP adventure by suchakra
Northsec 2017 CTF – Rao’s missile writeup by Étienne Ducharme
NorthSec 2017 rao_bash by Toshi Piazza
The Solfa Cipher (NSEC17 Write-Up) by Jonathan Racicot

2015

NorthSec 2015 - XSS Challenge Writeups by Olivier Arteau
NorthSec 2015: behind the scenes by Stéphane Graber

2014

The "Infamous" NorthSec Smart Card Track by ouaibe_

2013

NorthSec 2013 - iOS Forensics track by François Proulx
Smart Card CDC Brute Force by Philippe Arteau
Smart Card Track by Éric Vigeant