$ ctf42

#buffer-overflow CTF challenges

31 CTF challenges using buffer-overflow from 22 CTFs (2018–2024), 31 with writeups. Mostly Pwn (48%) and Misc (39%).

Pwn · 15 Misc · 12 Reverse · 2 Crypto · 1 Web · 1

Often combined with

#format-string 3 #srop 2 #variable-overwrite 2 #reversing 2 #ret2win 2 #ret2libc 2 #info-leak 2 #stack-variable-overwrite 1 #strncpy 1 #return-address-overwrite 1 #write-what-where 1 #brainfuck 1 #function-pointer-overwrite 1 #cpp-object-corruption 1 #unicoll 1

Challenges

Filter and sort these in the challenge browser →

Challenge CTF Weight Category Has
moving-signals
#srop#buffer-overflow
 0x41414141 2021 – Pwn files wu 3
lucky
#prng-seed-overwrite#rand-prediction#buffer-overflow
 Defcamp 2018 Quals 18.75 Misc files wu 3
RemoteSchool
#buffer-overflow#strncpy#write-what-where#return-address-overwrite
 AUCTF 2020 – Misc files wu 3
not_beginners_stack
#buffer-overflow#stack-pivot#shellcode
 zer0pts 2021 24.56 Pwn files wu 3
ezpz
#buffer-overflow#ret2win#pie-bypass
 WPICTF 2018 – Misc files wu 3
Random_Present
#buffer-overflow#ret2plt#got-leak#ret2libc
 X-MAS 2018 – Misc files wu 3
converter
#buffer-overflow
 TSG 2023 – Pwn files wu 3
babypywn
#buffer-overflow
 DownUnderCTF 2022 – Pwn files src wu 3
stonks
#buffer-overflow
 HSCTF 2021 – Pwn files wu 3
Return_to_Sender
#buffer-overflow
 HSCTF 2019 – Misc files wu 3
HomeworkHelp
#reversing#buffer-overflow#xor
 WolvCTF 2023 24.33 Reverse files wu 2
Metacortex
#buffer-overflow#variable-overwrite#alloca
 b01lers 2020 22.46 Misc files wu 2
ccanary
#buffer-overflow#variable-overwrite
 ALLES 2021 – Pwn files wu 2
protrude
#buffer-overflow#type-confusion#canary-bypass#info-leak
 zer0pts 2020 24.56 Misc files wu 2
strong-arm
#buffer-overflow#aarch64#rop#ret2libc
 WPICTF 2021 – Pwn files wu 2
Sigma
#wasm-exploitation#buffer-overflow#xss
 UTCTF 2022 – Web files wu 1
FlowRev
#reversing#buffer-overflow
 VishwaCTF 2021 – Reverse files wu 1
md5flow
#md5-collision#unicoll#hashclash#lz4#buffer-overflow
 DamCTF 2021 24.43 Crypto files wu 1
grimoire
#format-string#info-leak#buffer-overflow#one-gadget
 zer0pts 2020 24.56 Misc files wu 1
gambler_supreme
#format-string#canary-leak#buffer-overflow
 b01lers 2022 33.05 Pwn files wu 1
system_write
#format-string#buffer-overflow#got-overwrite
 Defcamp 2023 Quals – Pwn files wu 1
Rigged_Slot_Machine_1
#buffer-overflow#stack-variable-overwrite
 1337UP 2024 – Misc files wu 1
aush
#buffer-overflow#stack-reorder#memcmp-bypass
 zer0pts 2023 52.62 Pwn files wu 1
Greetings_from_Santa
#buffer-overflow#ret2win#system
 X-MAS 2018 – Misc files wu 1
ready_for_xmas
#buffer-overflow#ret2system#badchars-bypass
 X-MAS 2020 – Misc files wu 1
str_vs_cstr
#buffer-overflow#cpp-object-corruption#function-pointer-overwrite
 CakeCTF 2022 – Pwn files wu 1
selfcet
#buffer-overflow#cet-bypass#srop
 SECCON 2023 Quals 100.00 Pwn files wu 1
TerminalOverdrive
#buffer-overflow
 HackPack 2022 35.11 Pwn files wu 1
snake-oil
#buffer-overflow
 FE-CTF 2022 – Pwn files wu 1
hitcon
#buffer-overflow
 HITCON 2018 – Misc files wu 1
BrainSim
#brainfuck#buffer-overflow
 COMPFEST 2021 – Pwn files wu 1