404CTF 2025

Here you’ll find my results from this CTF, along with write-ups (if I find time to make them 😅) for the various challenges I completed during the event.

This 4th edition of 404CTF ran from May 11, 2025, to June 1, 2025 (21 days total).

Tip

If needed, all files and challenge details can be found in the official repository at the address below: https://github.com/HackademINT/404CTF-2025

A big THANK YOU to them!

Results

Note

Unfortunately, being busy with the French Robotics Cup with my school’s association, there was no “hardcore” CTF time this year. However, I still managed to dedicate several evenings to secure a Top 100 finish again this year.

Key Figures:

Final Position: 67th
Total Points: 5428
Challenges Solved: 38 / 83
Total Participants (100+ points): 2893

Challenges

Difficulty Legend

Symbol	Difficulty	Base Points
😇	Intro	100
🙂	Easy	100
😑	Medium	200
😡	Hard	500
😈	Insane	500

By category

Here are all the challenges, with relevant details, ordered by category and number of points at the end of the event.

Quantum Algorithms

Status	Name	Points
✅	[😇] - Quantum Machinery	100
✅	[🙂] - Grover (1/2)	211
❌	[😑] - Grover (2/2)	488

Digital Forensics

Status	Name	Points
✅	[😇] - USB 51	100
❌	[😑] - Enter Your Password	100
✅	[🙂] - Dockerflag	100
✅	[😇] - Forensic and Math [1/2]	100
❌	[🙂] - Forensic and Math [2/2]	100
❌	[😇] - Apprentice Carver [1/2]	100
❌	[😡] - Toortik Triflexation [1/2]	356

Cryptanalysis

Status	Name	Points
✅	[😑] - Saturn Cipher	100
✅	[🙂] - Galactic Interview	100
✅	[😇] - Distant Message	100
✅	[🙂] - R1R2	100
✅	[😑] - Abnormal Planets	211
✅	[😑] - Spacemark	244
✅	[😑] - You Spin Me Round	299
✅	[😡] - Cosmic Galactic Glasses	404
❌	[😡] - Galactic Interview 2	471
❌	[😑] - Space Drift	477
❌	[😡] - Cosmic Glasses Revenge	494
❌	[😈] - Launch Curve	495
❌	[😡] - Jupiter Cipher	496
❌	[😈] - More Space	499

Miscellaneous

Status	Name	Points
✅	[😇] - Welcome	100
✅	[😇] - Pix2Num	100
❌	[🙂] - Space Traveller	100
✅	[😇] - Privacy Policy	100
❌	[😡] - Satellization	490
❌	[😈] - Binary Star [2/2]	500

Binary Exploitation

Status	Name	Points
✅	[😇] - Endangered Gorfou [1/3]	100
❌	[😇] - Endangered Gorfou [2/3]	100
❌	[🙂] - Endangered Gorfou [3/3]	100
❌	[🙂] - Spaaaaaaace	100
❌	[🙂] - KerberINT Space Program	205
❌	[😑] - 22 Bytes to Save the Universe	366
❌	[😑] - Bounty Machine	473
❌	[😑] - Space Odyssey	489
❌	[😡] - Solaris	491
❌	[😈] - Kalaxy	495
❌	[😡] - Cosmic-Base	495
❌	[😈] - Bokit	497

Artificial Intelligence

Status	Name	Points
✅	[😇] - Gorfoustral (1/3)	100
❌	[🙂] - Gorfoustral (2/3)	132
❌	[😑] - Gorfoustral (3/3)	269
❌	[😡] - Tattoo	467

OSINT

Status	Name	Points
❌	[😑] - Golden Satellite	100
✅	[😡] - Earth Attack (1/2)	100
✅	[😑] - Vacation Time	100
✅	[🙂] - Unknown Mission	100
✅	[😇] - Salty Bill	100
✅	[🙂] - Earth Attack (0/2)	100
✅	[😑] - Pink City	100
✅	[😡] - Head in the Stars	347
❌	[😈] - Earth Attack (2/2)	400
❌	[😡] - Dark Waters	464
❌	[😈] - DPOsint	498

Realistic

Status	Name	Points
❌	[😇] - The LDAP Chronicles	100
❌	[😇] - Houston, we have a problem	100
❌	[😇] - Named Resolve	100
❌	[🙂] - The AD Guardians	100
❌	[🙂] - The GPO Mission	100
❌	[🙂] - Ghost Membership	100

Reverse Engineering

Status	Name	Points
✅	[😇] - Cbizarre [1/2]	100
✅	[😇] - Cbizarre [2/2]	100
✅	[🙂] - Reversconstrictor	100
✅	[🙂] - 3x3cut3_m3	100
❌	[😑] - Registration	304
❌	[😡] - RFC 9452 bis: IP over Rockets with Quality of Service	488
❌	[😑] - Binary Star [1/2]	489

Hardware Security

Status	Name	Points
✅	[🙂] - Space Radio	100
✅	[🙂] - R16D4	100
✅	[😑] - What’s Your Temperature?	100
✅	[😇] - Too Much IQ	100
❌	[😑] - Spatial Radio Code #1	293
✅	[😑] - Unidentified Serial Bus [1/2]	356
✅	[😡] - Unidentified Serial Bus [2/2]	356

Web Security

Status	Name	Points
✅	[😇] - Cheese Chess	100
✅	[🙂] - Fire Server	100
✅	[😇] - Rainbow Rocket	100
❌	[😡] - Space Fleet Command	473
❌	[😑] - Sideral Noise	499

Last updated on May 10, 2026