$ ctf42

Challenges

Category
Difficulty
CTFtime weight
–
Higher weight ≈ harder, more prestigious event.
Year
–
Must have
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128 challenges · browse all techniques

Challenge CTF Weight Category Has
Refreshments
#off-by-one#fastbin-attack#unsorted-bin
 StackSmash 2025 24.00 Pwn files wu 1
A3S
#affine-sbox#linear-cryptanalysis#gf3
 RaRCTF 2021 24.53 Crypto files wu 1
Archer
#arbitrary-null-write#bypass-check
 RaRCTF 2021 24.53 Pwn files wu 3
Dotty
#morse-code#strings
 RaRCTF 2021 24.53 Reverse files wu 2
Electroplating
#seccomp-bypass#shared-library-injection#file-upload
 RaRCTF 2021 24.53 Web files wu 1
Not_That_Simple
#shellcode#getdents#stack-pivot
 RaRCTF 2021 24.53 Pwn files wu 2
RaRPG
#binary-patching
 RaRCTF 2021 24.53 Reverse files wu 3
SecureStorage
#xss#postmessage#iframe-injection
 RaRCTF 2021 24.53 Web files wu 1
Shamirs_Stingy_Sharing
#secret-sharing#polynomial-leak#prng-seed
 RaRCTF 2021 24.53 Crypto files wu 1
The_Mound
#custom-heap#double-free#arbitrary-write#got-overwrite
 RaRCTF 2021 24.53 Pwn files wu 1
Unintended
#strlen-overflow#heap-overflow#tcache
 RaRCTF 2021 24.53 Pwn files wu 3
boring-flag-runner
#custom-vm#stack-overwrite#one-gadget
 RaRCTF 2021 24.53 Pwn files wu 1
infinite-free-trial
#crc8#bruteforce#keygen
 RaRCTF 2021 24.53 Reverse files wu 3
lemonthinker
#command-injection
 RaRCTF 2021 24.53 Web files wu 3
mini-A3S
#affine-sbox#linear-cryptanalysis#gf3#key-recovery
 RaRCTF 2021 24.53 Crypto files wu 1
minigen
#linear-recurrence#xor#prng
 RaRCTF 2021 24.53 Crypto files wu 3
optimizeme
#rust-reversing#bignum-arithmetic
 RaRCTF 2021 24.53 Reverse files wu 1
ret2winRaRs
#stack-buffer-overflow#ret2win
 RaRCTF 2021 24.53 Pwn files wu 3
secureuploader
#path-traversal#os-path-join
 RaRCTF 2021 24.53 Web files wu 2
snore
#schnorr#nonce-reuse#lattice
 RaRCTF 2021 24.53 Crypto files wu 1
Cr0wnAir
#jwt#algorithm-confusion
 Union 2021 24.34 Web files wu 3
antistatic
#anti-debugging#crackme
 Union 2021 24.34 Reverse files wu 1
babyrarf
#type-confusion#info-leak#ret2win
 Union 2021 24.34 Pwn files wu 2
human_server
#ecdsa#nonce-reuse
 Union 2021 24.34 Crypto files wu 3
unionware
#powershell-deobfuscation#ransomware
 Union 2021 24.34 Reverse files wu 2
why_is_a_raven
#isogeny#sidh#torsion-point-attack
 Union 2021 24.34 Crypto files wu 2
A_new_Hire CyberApocalypse 2025 – Forensics files
Arcane_Auctions CyberApocalypse 2025 – Misc files
Aurors_Archive CyberApocalypse 2025 – Web files
Blessing CyberApocalypse 2025 – Pwn files
Cave_Expedition CyberApocalypse 2025 – Forensics files
Contractor CyberApocalypse 2025 – Pwn files
Copperbox CyberApocalypse 2025 – Crypto files
Crossbow CyberApocalypse 2025 – Pwn files
Cyber_Attack CyberApocalypse 2025 – Web files
Echoes_in_Stone CyberApocalypse 2025 – OSINT files
EldoriaGate CyberApocalypse 2025 – Blockchain files
Eldoria_Panel CyberApocalypse 2025 – Web files
Eldoria_Realms CyberApocalypse 2025 – Web files
Eldorion CyberApocalypse 2025 – Blockchain files