$ 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
Adventure_On_the_High_C SunshineCTF 2024 38.57 files wu 1
qqbot 0CTF 2022 100.00 files wu 1
oorrww L3akCTF 2024 24.43 files wu 1
Trust_Issues SAS 2025 Quals 20.72 files wu 1
Write_me_a_Book GreyCatTheFlag 2023 Quals – files wu 1
image-identifier redpwn 2021 32.61 files wu 1
Cabinet Haruulzangi 2026 Quals – files wu 1
ubf GoogleCTF 2023 – files wu 1
AuViel Hayyim 2022 25.00 files wu 1
Liars_and_Cheats PlaidCTF 2021 99.64 files wu 1
bytecrusher DiceCTF 2026 Quals 100.00 files wu 1
BitmapManager Dragon 2020 98.00 files wu 1
String_Editor_1 ImaginaryCTF 2021 – files wu 1
note N1CTF 2022 77.68 files wu 1
pcg pingCTF 2022 24.29 files wu 1
Freal_World_Manipulation PwnSec 2026 33.89 files wu 1
book Defcamp 2023 Quals – files wu 1
RockPaperScissors NahamCon 2021 24.98 files wu 1
porcosort LakeCTF 2022 Quals 23.96 files wu 1
EmptyRead NahamCon 2021 24.98 files wu 1
limit smileyCTF 2025 48.61 files wu 1
Echo Srdnlen 2026 Quals 34.76 files wu 1
Maintenance_Log CSS 2026 – files wu 1
Cake 1337UP 2022 22.49 files wu 1
Homemaker SunshineCTF 2026 51.63 files wu 1
duet 0CTF 2020 Quals – files wu 1
Refreshments StackSmash 2025 24.00 files wu 1
BabyHeap 0CTF 2018 Quals – files wu 1
CoRJail corCTF 2022 24.92 files wu 1
Rudimentary_Calculator L3akCTF 2026 34.47 files wu 1
Original_Unlimited_Codex_100_Free KBxAc 2026 – files wu 1
BabyHeap 0CTF 2019 Quals – files wu 1
Reptilian_Server SwampCTF 2024 40.40 files wu 1
unlimited_chatbot snakeCTF 2023 – files wu 1
back_to_the_future PlaidCTF 2020 93.15 files wu 1
Numbersss BYUCTF 2024 – files wu 1
encryptinator TAMUctf 2023 – files wu 1
Think_Outside_the_Box n00bzCTF 2024 24.23 files wu 1
Game_CET_Match WolvCTF 2024 35.25 files wu 1
Scratchpad SwampCTF 2024 40.40 files wu 1