$ 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
Baby_Welcome VolgaCTF 2025 Quals 27.14 files
Babyrust TSCCTF 2025 – files
Backdoored HaixlaChapelle 2025 – files
Beginner_Pwn_2 SwampCTF 2025 40.40 files
Biscuits BITSCTF 2025 – files
Bit_Burger RITSEC 2025 – files
Black_Market_1 THCon 2025 – files
Blessing CyberApocalypse 2025 – files
Book_Manager Infobahn 2025 – files
Book_Manager_V2 Infobahn 2025 – files
Bootkit UIUCTF 2025 – files
Bounty_Board PlaidCTF 2025 100.00 files
Breakfast CrewCTF 2025 38.93 files
Breaking_Bad VolgaCTF 2025 Quals 27.14 files
Broken LINE 2025 – files
Bronze_and_Copper_Pwn_Shop m0leCon 2025 Quals 75.00 files
Buffer_Overflow_1 CyberLeague 2025 – files
Buzz_s_Memory_Mission BDSec 2025 15.62 files
CAC ToH 2025 24.27 files
CROMOZOMINUS_REX TFC 2025 – files
CallingConvention Bearcat 2025 – files
Can_you_really_change CrateCTF 2025 – files
Canon_Event TRX 2025 – files
Cash_Memo EHAX 2025 – files
Chapter_3._A_place_to_hunt Cyshock 2025 – files
Character_assassination BuckeyeCTF 2025 – files
ChattyParrot Junior.Crypt 2025 23.13 files
Cheri_cheri_PWN Ulisse 2025 24.81 files
Chunky_Threads L3akCTF 2025 24.43 files
Clobber DawgCTF 2025 69.00 files
Clone_Army SunshineCTF 2025 51.65 files
ClosedBSD CrateCTF 2025 – files
Clue UMassCTF 2025 48.38 files
Cold_Climate HaixlaChapelle 2025 – files
Compress PwnMe 2025 Quals 24.95 files
Confusius WannaGameChampionship 2025 – files
Conosuba LINE 2025 – files
Container Codegate 2025 Quals – files
Contractor CyberApocalypse 2025 – files
Copy_In_Out_System DeadSec 2025 31.29 files