$ 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-pwn UofTCTF 2025 23.90 files
baby-pwn-2 UofTCTF 2025 23.90 files
baby_bof CTF@AC 2025 Quals 24.53 files
baby_fpon CTFZone 2025 Quals 92.45 files
baby_pwn pingCTF 2025 32.50 files
babyheap TSCCTF 2025 – files
babyrop smileyCTF 2025 48.61 files
backdoor DownUnderCTF 2025 91.66 files
barelyontime CrewCTF 2025 38.93 files
bashtille BuckeyeCTF 2025 – files
bassoon DiceCTF 2025 Quals 81.00 files
bbox RCTF 2025 – files
beating_yellow_king_with_musl_in_ng+ niteCTF 2025 – files
below NexHunt 2025 – files
blargh smileyCTF 2025 48.61 files
blazingly_fast_memory_unsafe VuwCTF 2025 – files
book-editor UofTCTF 2025 23.90 files
brainfast hxp 2025 – files
buggy TJCTF 2025 – files
bytechanger Dreamhack 2025 – files
calc HITCON 2025 – files
calculator UMassCTF 2025 48.38 files
cassandra_von_hxp hxp 2025 – files
cfp openECSC 2025 – files
chirp BuckeyeCTF 2025 – files
city_planning TJCTF 2025 – files
cknote FullWeakEngineer 2025 24.60 files
clannad_is_g00d_anim3 NoHackNoCTF 2025 23.47 files
closed_ended TSG 2025 – files
cloud_computing LA 2025 – files
cosmic_ray Ctrl+Space 2025 Quals 25.00 files
cosmofile L3akCTF 2025 24.43 files
counting-sort UofTCTF 2025 23.90 files
cursed_format PatriotCTF 2025 – files
cython Codegate 2025 Quals – files
d3cgi D3CTF 2025 54.67 files
d3kheap2 D3CTF 2025 54.67 files
d3kshrm D3CTF 2025 54.67 files
d3kshrm-revenge D3CTF 2025 54.67 files
dbfs CyKor 2025 – files