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@Hack 2025 - CTF Challenges

All challenges from @Hack 2025.

About @Hack 2025

@Hack 2025 is the 2nd edition of @Hack - a Canadian Capture The Flag (CTF) competition, hosted by HEXPLOIT ALLIANCE and TECHNATION at Concordia University in Montreal.

• Location: Concordia University, Montreal
• Dates: March 1st-2nd, 2025
• Prizes: $16K in cash (💰) + nearly $6K in sponsor prizes (🎁)

Narrative Film: Jester's Story

For an immersive experience into the theme of @Hack 2025, watch the short film: Jester's Story.

Obtain All Challenges

You can fetch all challenges by cloning this repo recursively (including submodules):

git clone --recursive https://github.com/athack-ctf/AtHackCTF-2025-Challenges.git

Alternatively, you can explore each challenge separately by checking its individual repo (see below).

All Challenges

Challenge	Category	Author	Special Notes	Value
AI Leaky ReLU	AI	Hugo		300
Alcohollisions	Crypto	Chit Chit		100
Apocalypse	Web	Chit Chit	beginner	50
Are You Playing Fair	Crypto	Aathira	beginner	50
Audacious Tunes	Stegano	Boisghur	beginner	50
Big Jester is Watching You	Hardware	Hugo	beginner	50
Breach	Forensics	Revived by Houssem	author:Cynex-K ctf:AlphaCTF-2k23	300
Cardjacker	Web	Anis	sponsored	600
CWE 120	Pwn	Anis	beginner	100
CWE 78	Pwn	Anis	beginner	50
Detached then Forgotten	Pwn	Abdussamad	beginner	150
Do NOT mov	RE	Hugo		350
Dora	Stegano	Chit Chit	beginner	50
Dual Duel	Crypto	Alin		250
Flip Fix Frenzy	Stegano	Aniket	sponsored	150
Forgotten Secret	Forensics	Hussein		300
Formatting is Weird	Pwn	William Mailhot		600
Hidden In Panoramic Sight	Miscellaneous	Alin	beginner sponsored	200
i, humans, I know everything and See Between the liNes	OSINT	Jeslyn		150
If It Works, Don't Patch It	Web	Abdussamad	unreleased	N/A
Insecure by Design	Web	Anis		400
Jean Guillaume Auguste Victor	RE	Hugo		150
Jester's Blog	Web	Boisghur	unreleased	N/A
Jester's Testing	Miscellaneous	Constance	unreleased	N/A
Little Squid Game	Pwn	Chit Chit		100
Lost Password	Forensics	Anis	beginner	50
Mainframe	Stegano	William Charron-Boyle	unreleased	N/A
🚹 🎩 $\frac{\sin{\theta}}{\cos{\theta}}$ [PART 1a] link	OSINT	Jeslyn	beginner	50
🚹 🎩 $\frac{\sin{\theta}}{\cos{\theta}}$ [PART 1b] link	OSINT	Jeslyn	beginner	50
🚹 🎩 $\frac{\sin{\theta}}{\cos{\theta}}$ [PART 2] link	OSINT	Jeslyn	beginner	100
🚹 🎩 $\frac{\sin{\theta}}{\cos{\theta}}$ [PART 3] link	OSINT	Jeslyn		100
Merkle Maze	Crypto	Aathira	unreleased	N/A
MFT 101	Forensics	Houssem	beginner	100
MFT 201	Forensics	Houssem		150
Misoperate	RE	William Charron-Boyle		200
(Not So) Smart Contracts	Web3	Kalyani	unreleased	N/A
Noteable Notes	Stegano	Anthony	beginner	200
100% Wrong	Pwn	Anis		150
Phantom Trails	Forensics	Houssem		250
Relics Of The Past	Forensics	Vikas	beginner	200
RFID 1 - Cleartext	Hardware	Hugo	sponsored	400
RFID 2 - UIDentity Crisis	Hardware	Hugo	sponsored	500
RFID 3 - Pay2Win	Hardware	Hugo	sponsored	600
Rogue Signals	Forensics	Houssem	beginner	100
Sanboxer	RE	William Charron-Boyle		350
Shredded Letter	Miscellaneous	Anis	beginner	350
Sokobaaaan	Miscellaneous	Hugo	beginner	150
Stack Smashing	Pwn	Anis	beginner	200
Steganoopsies	Stegano	Hugo	beginner	50
Template of Doom - 1	Web	Vikas	beginner	100
Template of Doom - 2	Web	Vikas	beginner	100
The Locked Eternity	Forensics	Houssem		350
TL;DR. Too Long; Didn't Read.	Web	Anis	sponsored	450
Token of Deceit	Web	Isabella	beginner	100
Upload Deception 101	Web	Dana	beginner	50
Vimprisoned	Pwn	Anis	beginner	150
Way Too Expensive	Web	Anis	sponsored	400
XSS One	Web	Anis	beginner	50
XSS Two	Web	Anis	beginner	50

Challenge Design Team

Leads

• Anis
• Hugo

Members

• Aathira
• Abdussamad
• Alin
• Aniket
• Anthony
• Boisghur
• Chit Chit
• Constance
• Dana
• Houssem
• Hussein
• Isabella
• Jeslyn
• Kalyani
• Massimo
• Vikas
• William Charron-Boyle
• William Mailhot

Follow us for more

AtHackCTF	Hexploit Alliance	TECHNATIONca