$ 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
Canary_Notes THJCC 2026 Summer – files
Candy_wrapper_shop Axiom 2026 – files
Canvas_of_Fear MidnightFlag 2026 24.50 files
Careening RITSEC 2026 – files
Cargo_Overrun Universal 2026 25.00 files
Chicken_Dinner BoroCTF 2026 – files
Chronicle THJCC 2026 Summer – files
Chuantongxiangyan LilacCTF 2026 25.00 files
Cider_Vault BITSCTF 2026 – files
CivilWar CodeVinci 2026 18.57 files
CoMQTT Codegate 2026 Quals – files
CobWeb Codegate 2026 Quals – files
Coming_Together BoroCTF 2026 – files
Con CPCTF 2026 – files
Cosmic_Rays MntcrlCTF 2026 25.00 files
Cosmic_Rings ApoorvCTF 2026 24.10 files
Cult_Classic BKCTF 2026 – files
DSA_Assignment BKISC 2026 – files
Death_Ops PwnSec 2026 33.89 files
Dirty_Laundry Pragyan 2026 1.84 files
Do_you_think_you_know_about_Heap_Exploitation 0xV01D 2026 19.48 files
DocServ HackAstra 2026 – files
Dogtrack BKCTF 2026 – files
Dragon_Guard CTF@AC 2026 Quals – files
EASY_Egghead BKCTF 2026 – files
EU_Filter upCTF 2026 24.42 files
Echo BKISC 2026 – files
Echo_chamber NNS 2026 – files
Editorial_Board FortID 2026 45.00 files
Ekusher_Shobdo BDSec 2026 15.62 files
Elk LilacCTF 2026 25.00 files
End_of_Life FortID 2026 45.00 files
Eon_Notes ARA 2026 – files
Event_Horizon CTF@AC 2026 Quals – files
Excalipipe THJCC 2026 – files
Eyeless MidnightFlag 2026 24.50 files
FaaS_2 ScriptCTF 2026 – files
Factory_Monitor UMassCTF 2026 65.95 files
Farm THJCC 2026 – files
File_Server KalmarCTF 2026 49.97 files