$ 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
HeckerBeluga
#constraint-solving
 Engineer 2022 22.65 files wu 1
nsftpd
#command-injection#ftp
 ImaginaryCTF 2024 49.81 files wu 1
runway0
#command-injection
 BuckeyeCTF 2024 50.91 files wu 1
GreenShell
#command-injection
 PatriotCTF 2022 24.52 files wu 1
Guardians_Of_The_Galaxy
#chroot-escape
 idekCTF 2021 24.56 files wu 1
chromium_sbx
#chromium-sandbox-escape#mojo-ipc
 0CTF 2020 Quals – files wu 1
fufu
#char-counter-overflow#heap-overflow
 KillerQueen 2021 21.14 files wu 1
Guess_It
#canary-reuse#stack-buffer-overflow
 SwampCTF 2024 40.40 files wu 1
Mmap_note
#canary-leak#stack-buffer-overflow#seccomp
 SEETF 2023 – files wu 1
do_not_rewrite
#canary-bypass#scanf
 WaniCTF 2024 24.99 files wu 1
AttackOnCanary
#canary-bruteforce
 LakeCTF 2022 Quals 23.96 files wu 1
cairo-proxy
#cairo#starknet#proxy-contract
 Paradigm 2022 25.00 files wu 1
aush
#buffer-overflow#stack-reorder#memcmp-bypass
 zer0pts 2023 52.62 files wu 1
seeing_red
#buffer-overflow#format-string
 b01lers 2024 30.80 files wu 1
str_vs_cstr
#buffer-overflow#cpp-object-corruption#function-pointer-overwrite
 CakeCTF 2022 – files wu 1
selfcet
#buffer-overflow#cet-bypass#srop
 SECCON 2023 Quals 100.00 files wu 1
Beginner_Menu
#buffer-overflow
 BuckeyeCTF 2023 34.50 files wu 1
Starter_Buffer
#buffer-overflow
 BuckeyeCTF 2023 34.50 files wu 1
TerminalOverdrive
#buffer-overflow
 HackPack 2022 35.11 files wu 1
snake-oil
#buffer-overflow
 FE-CTF 2022 – files wu 1
Cookie_Jar
#buffer-overflow
 angstromCTF 2018 – files wu 1
Peaky_and_the_Brain
#brainfuck#rop
 FwordCTF 2021 24.42 files wu 1
BrainSim
#brainfuck#buffer-overflow
 COMPFEST 2021 – files wu 1
down_the_line
#bootsector-pwn#heap-overflow
 TRX 2026 – files wu 1
patched_shell
#bof#ret2win
 UofTCTF 2024 23.90 files wu 1
wallstreet32
#blind-format-string#format-string#one-gadget
 PBjar 2021 23.18 files wu 1
Cosmic_Ray
#bit-flip#canary-bypass
 SekaiCTF 2023 24.86 files src wu 1
libprce3
#backdoor#pcre
 DEFCON 2024 Quals 77.38 files wu 1
audited2
#audit-hook-bypass
 hxp 2021 99.41 files wu 1
my_assm_hurts
#assembly
 SpookyCTF 2024 22.40 files wu 1
Unknown
#asm-binary
 HeroCTF 2023 – files wu 1
FixedASLR
#aslr-prediction#lfsr#canary-leak
 GoogleCTF 2022 – files wu 1
Sequential_Shellcode
#ascending-byte-shellcode
 MetaCTF 2021 – files wu 1
ARVM
#arm-shellcode#instruction-whitelist-bypass
 Codegate 2022 Quals – files wu 1
simbox
#arm-rop
 LINE 2022 – files wu 1
telnet
#arm#sql-injection#rop-ret2libc
 3kCTF 2021 24.14 files wu 1
arm_and_a_leg
#arm#rop
 b01lers 2024 30.80 files wu 1
EchoFrag
#arm#qemu-user#stack-buffer-overflow
 HackersPlayground 2021 24.50 files wu 1
furor-RPI
#arm#bof#shellcode
 UMDCTF 2021 – files wu 1
suckless2
#arbitrary-write#pointer-overwrite
 UMassCTF 2021 23.56 files wu 1