$ 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
debugapwner DiceCTF 2025 Quals 81.00 files
debuggable_1 smileyCTF 2025 48.61 files
debuggable_2 smileyCTF 2025 48.61 files
debuggable_3 smileyCTF 2025 48.61 files
decore KalmarCTF 2025 33.89 files
deja_vu squ1rrel 2025 24.25 files
dev_mem TRX 2025 – files
devnull-as-a-service x3ctf 2025 – files
distilled_printf LexingtonInformaticsTournament 2025 67.32 files
distrustful Null 2025 – files
doublemap CyberLeague 2025 – files
easypwn 0CTF 2025 24.34 files
echo UofTCTF 2025 23.90 files
eepy LA 2025 – files
entangled DownUnderCTF 2025 91.66 files
entangled_revenge DownUnderCTF 2025 91.66 files
exitnction openECSC 2025 – files
extra_credit TJCTF 2025 – files
ez_ROP TexSAW 2025 – files
ez_printf TexSAW 2025 – files
ezwins K17 2025 24.83 files
fast_food_restaurant CRHC 2025 – files
file_storage CyberLeague 2025 – files
filter FullWeakEngineer 2025 24.60 files
fini CTF@AC 2025 Quals 24.53 files
flippin_printf LexingtonInformaticsTournament 2025 67.32 files
frogcompute corCTF 2025 82.00 files
fruit_ninja VuwCTF 2025 – files
gamble_bad_bad TSCCTF 2025 – files
gamedev LA 2025 – files
gccfuck TexSAW 2025 – files
global_writer TSG 2025 – files
gogogo Nowruz 2025 – files
guesswhosstack b01lers 2025 44.50 files
haatetepe NNS 2025 – files
handled R3CTF 2025 54.67 files
hash-table-as-a-service UofTCTF 2025 23.90 files
he_protecc cornCTF 2025 23.12 files
heack L3HCTF 2025 54.67 files
heack_revenge L3HCTF 2025 54.67 files