$ 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
Fantaxotic_Fledgling JerseyCTF 2025 24.73 files
Faulty_Announcer V1T 2025 – files
Feather_Father V1T 2025 – files
File_No ASIS 2025 Quals 96.29 files
Flag_Guardian CPCTF 2025 – files
Flip_Flip_Hooray Glacier 2025 – files
Forsaken_Tower ToH 2025 24.27 files
Fotispy_1 nullconHackIM 2025 Berlin – files
Fotispy_2 nullconHackIM 2025 Berlin – files
Fotispy_3 nullconHackIM 2025 Berlin – files
Fotispy_4 nullconHackIM 2025 Berlin – files
Fotispy_5 nullconHackIM 2025 Berlin – files
Fotispy_6 nullconHackIM 2025 Berlin – files
Fotispy_7 nullconHackIM 2025 Berlin – files
Found_Memory NahamCon 2025 53.77 files
Free_provola ToH 2025 24.27 files
Free_the_monsters TRX 2025 – files
Future_Desk_Market Srdnlen 2025 – files
Future_Without_Escape FullWeakEngineer 2025 24.60 files
GOT PwnMe 2025 Quals 24.95 files
Gachiarray SECCON 2025 Quals – files
Gadget_Freak b01lers 2025 44.50 files
Gamble BackdoorCTF 2025 – files
Game_of_Yap BYUCTF 2025 – files
GhostNote NexHunt 2025 – files
Giggity_Ropity_Goo WorldWide 2025 24.48 files
Globalstack TSCCTF 2025 – files
GoPwn THCon 2025 – files
Go_Write_Where L3akCTF 2025 24.43 files
Goat BYUCTF 2025 – files
GoldenByte Junior.Crypt 2025 23.13 files
Gotcha_Go IERAE 2025 – files
Gram CyKor 2025 – files
Grannys_gift Kind4SUS 2025 – files
Greeting_as_a_Service SwampCTF 2025 40.40 files
Guessing_Game BuckeyeCTF 2025 – files
Guide_to_heap FullWeakEngineer 2025 24.60 files
HAL9000 SunshineCTF 2025 51.65 files
Hack_this_thing_please_folded_hands_loudly_crying_face WannaGameChampionship 2025 – files
Hashmatch RITSEC 2025 – files