$ ctf42

Challenges

Category
Difficulty
CTFtime weight
–
Higher weight ≈ harder, more prestigious event.
Year
–
Must have
Reset

112 challenges · browse all techniques

Challenge CTF Weight Category Has
Time_Lock NNS 2026 – Reverse files
Triangle_platform NNS 2026 – Misc files
bloatware.js NNS 2026 – Web files
boot2root NNS 2026 – Misc files
coins NNS 2026 – Pwn files
escapetime NNS 2026 – Pwn files
eu261 NNS 2026 – Blockchain files
happy NNS 2026 – Misc files
impossible NNS 2026 – Crypto files
jailnet NNS 2026 – Pwn files
littlefs NNS 2026 – Misc files
minitaturbaum_plfanze NNS 2026 – Misc files
perchance NNS 2026 – Web files
pset1 NNS 2026 – Pwn files
purgatory NNS 2026 – Reverse files
react.jail.js NNS 2026 – Misc files
small_guy NNS 2026 – Reverse files
void NNS 2026 – Blockchain files
CTF_speaker NNS 2025 – Misc files
Car_Park NNS 2025 – Misc files
Collatz NNS 2025 – Misc files
Crypto_Party NNS 2025 – Crypto files
DSP NNS 2025 – Reverse files
DotDotDot NNS 2025 – Reverse files
GOllum NNS 2025 – Web files
JWarmup NNS 2025 – Pwn files
Kachow NNS 2025 – Pwn files
LE_Secure_Connections NNS 2025 – Misc files
Landing NNS 2025 – Misc files
Live_Laugh_Love NNS 2025 – Crypto files
Mountaineer_Turbo NNS 2025 – Misc files
One_Point_Wonder NNS 2025 – Crypto files
Origami NNS 2025 – Crypto files
PointEncryption1 NNS 2025 – Crypto files
PointEncryption2 NNS 2025 – Crypto files
The_infamous_notes_app NNS 2025 – Pwn files
This_then_what_huh NNS 2025 – Web files
Touching_Grass NNS 2025 – OSINT files
Translator_not_clanker NNS 2025 – Misc files
Viewing_Pulses NNS 2025 – Misc files