$ 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
Master_of_Chicken 0CTF 2025 24.34 files
Mauryan_Imperial_Archives H7CTF 2025 22.56 files
Mayas_Terminal_Rescue JerseyCTF 2025 24.73 files
Merger KalmarCTF 2025 33.89 files
Michael_Scofield FortID 2025 30.00 files
Mickey_1337 SAS 2025 Quals 20.72 files
Midagh ASIS 2025 Finals 96.29 files
Milk_Processor ToH 2025 24.27 files
Minecraft_YouTuber BYUCTF 2025 – files
Minecrafty CTF@AC 2025 Quals 24.53 files
Missing_Piece N0PSctf 2025 24.34 files
Monalishack DaVinciCTF 2025 32.59 files
MyFiles IrisCTF 2025 34.30 files
My_Type SAS 2025 Quals 20.72 files
Mysterious_Vault DownUnderCTF 2025 91.66 files
N1drone N1CTF 2025 – files
N1khash N1CTF 2025 – files
NASA GPN 2025 – files
NeuralNet Junior.Crypt 2025 23.13 files
New_Mitigations LakeCTF 2025 Quals – files
NiteBus niteCTF 2025 – files
No.5_4_9 NoHackNoCTF 2025 23.47 files
Nocturne WorldWide 2025 24.48 files
Note_Editor GPN 2025 – files
Notecard SwampCTF 2025 40.40 files
Notes++ L3akCTF 2025 24.43 files
OK_Jail Bearcat 2025 – files
OOP WannaGameChampionship 2025 – files
Obligatory_Heap_Pwn BrunnerCTF 2025 24.66 files
Oh_my_buffer SwampCTF 2025 40.40 files
Old_Memes_Never_Die WHY 2025 Finals – files
Online_Cake_Flavour_Shop BrunnerCTF 2025 24.66 files
Othello_Villains BrunnerCTF 2025 24.66 files
Outdated SekaiCTF 2025 55.00 files
PAC_diversifier_zero THCon 2025 – files
PLANKTON NexHunt 2025 – files
PLANKTON_v2 NexHunt 2025 – files
POLYGOD Hack.lu 2025 98.02 files
Paf_Traversal HeroCTF 2025 – files
Peak4b00 BSidesAlgiers 2025 – files