$ 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

Filter and sort these in the challenge browser →

Challenge CTF Weight Has
JSculator SAS 2026 Quals 31.00 files
Jack_Black DalCTF 2026 24.90 files
JailPS_safeps CyberGame 2026 – files
Jericho_Script ARA 2026 – files
Jerrys_Crypt plfanzen 2026 25.00 files
Jin_Sakai BoroCTF 2026 – files
Just_Print_It DawgCTF 2026 66.64 files
KBO tkbctf 2026 25.00 files
Katakan_Peta ARA 2026 – files
Killionaire CPCTF 2026 – files
Knight_Squad_Academy KnightCTF 2026 22.21 files
Kuiper_Belt_Relay_Core CSS 2026 – files
LLM_Showdown RAMunchers 2026 23.30 files
L_Language BKISC 2026 – files
L_Language_Revenge BKISC 2026 – files
LetMeOut HI Cyber Con CTF 2026 – files
Locked_Out BrunnerCTF 2026 24.66 files
MSBO HiveCTF 2026 25.00 files
Mad_Libs SunshineCTF 2026 51.63 files
Magic_girl DUCKERZ 2026 – files
Make_a_contract_with_me_and_become_a_magical_girl THJCC 2026 – files
Malta_Nightlife PascalCTF 2026 24.00 files
Mania BoroCTF 2026 – files
Marauder_Might RITSEC 2026 – files
Math_Playground Bearcat 2026 – files
Midnight_Relay BITSCTF 2026 – files
Millers_Planet UniVsThreats 2026 Quals 18.35 files
Mind_The_Gap BITSCTF 2026 – files
Mindbreaker BrunnerCTF 2026 24.66 files
MyGO_Database_revenge THJCC 2026 – files
MyType CodeVinci 2026 18.57 files
Name NewYear 2026 23.42 files
Nice 0xV01D 2026 19.48 files
No_free_lunch GPN 2026 – files
No_win NNS 2026 – files
ORMT_ormt CyberGame 2026 – files
Orbital_Relay BITSCTF 2026 – files
Over_flow Securinets 2026 Quals 85.12 files
Ox78 TJCTF 2026 – files
PSP_is_love_PSP_is_life FromDuskTillDawn 2026 Quals 20.14 files