$ 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
checkin NCTF 2026 – files
coalmine DEFCON 2026 Quals 63.22 files
coalmine_revenge DEFCON 2026 Quals 63.22 files
coins NNS 2026 – files
cornelslop DiceCTF 2026 Quals 100.00 files
cppub MIPT 2026 Quals 24.58 files
crust Securinets 2026 Quals 85.12 files
cyberchump upCTF 2026 24.42 files
dbench_jumbf GreyCatTheFlag 2026 Quals – files
deja_vu THJCC 2026 Summer – files
die_braucht_viel_licht plfanzen 2026 25.00 files
do_it LagNCrash 2026 25.00 files
drop MidnightSun 2026 Quals 48.17 files
echo squ1rrel 2026 32.47 files
elite_ball_knowledge GreyCatTheFlag 2026 Quals – files
encodinator nullconHackIM 2026 Goa – files
escapetime NNS 2026 – files
extended_eBPF UofTCTF 2026 33.49 files
ez_pwn_revenge LYKNCTF 2026 – files
ezheap NCTF 2026 – files
faulty KalmarCTF 2026 49.97 files
future_diary_revisited THEMCTF 2026 – files
gitvfs DEFCON 2026 Quals 63.22 files
gitvfs_revenge DEFCON 2026 Quals 63.22 files
glass JailCTF 2026 – files
golfing LYKNCTF 2026 – files
gomoku VuwCTF 2026 25.00 files
good_enough GaslightCTF 2026 – files
gotohell_2 WRECKCTF 2026 – files
greeter LexingtonInformaticsTournament 2026 84.79 files
hashchain nullconHackIM 2026 Goa – files
heap2win BYUCTF 2026 – files
heapn_te_ic MidnightFlag 2026 24.50 files
holy_cit MIPT 2026 Quals 24.58 files
huge_binary_1 K17 2026 24.83 files
huge_binary_2 K17 2026 24.83 files
hunting_field TJCTF 2026 – files
igetsit BKCTF 2026 – files
ihyh K17 2026 24.83 files
impossible CodeVinci 2026 18.57 files