NorthSec 2020 (Online Edition)

Capture-The-Flag 101
2020-05-15, 14:00–17:00, Workshop Track 1

An introduction to Capture-The-Flag (CTF) with easy challenges and tips on how to approach them.

The objective of this workshop is to dive into Capture-The-Flag (CTF)
competitions. First, by introducing participants to the basic concepts. Then,
by helping them prepare for the upcoming NorthSec CTF, and, finally, evolve in
their practice of applied cybersecurity.

We will have easy and medium CTF challenges in several categories (binaries,
Web, exploitation, forensics) and we will give hints and solutions during the

This is meant to be for CTF first timers. Seasoned players should play
NorthSec's official CTF.

Workshops only: What materials (if any) should participants bring to the workshop?
  • a laptop
  • a programming language of choice (it's usually Python)
  • wireshark
  • a web assesment security tool (Burp, ZAP, Watobo, mitmproxy)
  • a disassembler / decompiler (Radare2, Ghidra, IDA Pro)

Olivier Bilodeau is leading the Cybersecurity Research team at GoSecure. With
more than 10 years of infosec experience, he enjoys attracting embedded Linux
malware, writing tools for malware research, reverse-engineering
all-the-things and vulnerability research. Passionate communicator, Olivier has
spoken at several conferences like BlackHat USA/Europe, Defcon, Botconf, SecTor,
Derbycon, HackFest and many more. Invested in his community, he co-organizes
MontréHack, a monthly workshop focused on applied information security, and
NorthSec, Montreal's community conference and Capture-The-Flag.