$ ctf42

Pwn CTF challenges

3,926 Pwn CTF challenges from 382 CTFs (2011–2026), 1,025 with writeups.

Top pwn techniques

#stack-buffer-overflow 95 #format-string 88 #rop 76 #use-after-free 56 #ret2win 55 #shellcode 48 #ret2libc 37 #heap 35 #heap-overflow 34 #tcache-poisoning 29 #got-overwrite 29 #stack-pivot 25 #buffer-overflow 23 #heap-exploitation 21 #seccomp 19

Challenges

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Challenge CTF Weight Has
Story_Contest HeroCTF 2025 – files
Strategist CyberApocalypse 2025 – files
Sukunahikona Securinets 2025 Quals 70.50 files
Super_Jumpio_Kart StackSmash 2025 24.00 files
SwpPCI SECCON 2025 Quals – files
TCL BYUCTF 2025 – files
TRX_Bank TRX 2025 – files
TSG_LAND TSG 2025 – files
TUNichtgut CSCG 2025 – files
TakeNote WolvCTF 2025 47.25 files
Talagrem_Server WannaGameChampionship 2025 – files
Teleportation TexSAW 2025 – files
Terminal_Error_online WHY 2025 Finals – files
Terminator_2 GPN 2025 – files
The_Classic_Notes_App GoogleCTF 2025 – files
The_Forbidden_Fruit P3rf3ctr00t 2025 – files
The_Goose L3akCTF 2025 24.43 files
The_Ingredient_Shop BrunnerCTF 2025 24.66 files
The_Ingredient_Shops_Revenge BrunnerCTF 2025 24.66 files
The_Jumps NahamCon 2025 53.77 files
The_Last_Duel BackdoorCTF 2025 – files
The_Troll_Zone Kashi 2025 21.78 files
The_World IERAE 2025 – files
The_infamous_notes_app NNS 2025 – files
The_kindling_of_the_first_Flag Kind4SUS 2025 – files
Tic_Tac_Toe UTCTF 2025 – files
Tiny CubeCTF 2025 24.71 files
Tinybrain SwampCTF 2025 40.40 files
Todo_List Codegate 2025 Quals – files
Transmit LINE 2025 – files
Trolley_Problem b01lers 2025 44.50 files
Trusted snakeCTF 2025 Quals 36.65 files
Tumbleweed_Inc. PlaidCTF 2025 100.00 files
Turing_Approved Kind4SUS 2025 – files
UPPACKNING Hack.lu 2025 98.02 files
Ultimate_Baby_Bof ASIS 2025 Quals 96.29 files
Umiyuri_Kaikeitan SekaiCTF 2025 55.00 files
Under_Attack N0PSctf 2025 24.34 files
Unexpected AmateursCTF 2025 – files
Unicornel_TrustZone GoogleCTF 2025 – files