$ ctf42

Challenges

Category
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Higher weight ≈ harder, more prestigious event.
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271 challenges · browse all techniques

Challenge CTF Weight Category Has
BabyRC4
#rc4#keystream-reuse
 SEETF 2023 – Crypto files wu 1
Murky_SEEPass
#smart-contract#merkle-proof#private-storage-read
 SEETF 2023 – Blockchain files wu 3
Pigeon_Bank
#smart-contract#reentrancy#flash-loan
 SEETF 2023 – Blockchain files wu 3
decompile-me
#pyc-decompilation
 SEETF 2023 – Reverse files wu 2
4mats
#format-string
 SEETF 2022 – Pwn files wu 3
bestsoftware
#dotnet-reversing
 SEETF 2022 – Reverse files wu 2
close_enough
#rsa#fermat-factorization#close-primes
 SEETF 2022 – Crypto files wu 3
easy_overflow
#ret2win#stack-buffer-overflow
 SEETF 2022 – Pwn files wu 2
lost_modulus
#rsa#modulus-recovery
 SEETF 2022 – Crypto files wu 2
pokemonbattle
#format-string#function-pointer-overwrite
 SEETF 2022 – Pwn files wu 1
susware
#malware-analysis#unpacking
 SEETF 2022 – Reverse files wu 1
username_generator
#javascript-scope-pollution#xss
 SEETF 2022 – Web files wu 1
wayyang
#python-eval-injection#filter-bypass
 SEETF 2022 – Pwn files wu 3
Express_JavaScript_Security SEETF 2023 – Web files wu 2
Operation_Feathered_Fortune_Fiasco SEETF 2023 – Blockchain files wu 2
Pigeon_Vault SEETF 2023 – Blockchain files wu 3
Throw_your_malware_here SEETF 2023 – Web files wu 1
hall_of_fame SEETF 2022 – Pwn files wu 3
3d_maze GreyCatTheFlag 2026 Quals – Reverse files
AE_no_S GreyCatTheFlag 2026 Quals – Crypto files
APTV3R4_STRIKES_AGAIN GreyCatTheFlag 2026 Quals – Forensics files
An_old_soviet_terminal GreyCatTheFlag 2026 Quals – Misc files
Chiaroscuro GreyCatTheFlag 2026 Quals – Forensics files
Codex_Computer_Use GreyCatTheFlag 2026 Quals – Misc files
Crimewatch GreyCatTheFlag 2026 Quals – Forensics files
Fort_Knockies GreyCatTheFlag 2026 Quals – Forensics files
Grey_Yuumi GreyCatTheFlag 2026 Quals – Forensics files
Greyhats_Gallery GreyCatTheFlag 2026 Quals – Web files
Pollution GreyCatTheFlag 2026 Quals – Web files
Red_Flag GreyCatTheFlag 2026 Quals – Web files
Say_My_Name GreyCatTheFlag 2026 Quals – Misc files
SeeTeeEffedIn GreyCatTheFlag 2026 Quals – Web files
Training_Shooting_Flags GreyCatTheFlag 2026 Quals – Misc files
Wait_a_minute GreyCatTheFlag 2026 Quals – Misc files
ai GreyCatTheFlag 2026 Quals – Misc files
babyRSA GreyCatTheFlag 2026 Quals – Crypto files
baby_bof GreyCatTheFlag 2026 Quals – Pwn files
babyheap GreyCatTheFlag 2026 Quals – Pwn files
caexor GreyCatTheFlag 2026 Quals – Crypto files
dbench_jumbf GreyCatTheFlag 2026 Quals – Pwn files