$ ctf42

#format-string CTF challenges

88 CTF challenges using format-string from 60 CTFs (2017–2024), 88 with writeups. Mostly Pwn (53%) and Misc (47%).

Pwn · 47 Misc · 41

Often combined with

#got-overwrite 18 #rop 8 #ret2libc 6 #stack-leak 5 #one-gadget 5 #canary-leak 4 #stack-buffer-overflow 4 #pie-leak 3 #info-leak 3 #arbitrary-write 3 #buffer-overflow 3 #write-what-where 2 #return-address-overwrite 2 #libc-leak 2 #function-pointer-overwrite 2

Challenges

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Challenge CTF Weight Category Has
babyformat TetCTF 2021 25.00 Misc files wu 2
inkaphobia ImaginaryCTF 2021 – Pwn files wu 2
OnePieceRemake FwordCTF 2020 24.42 Misc files wu 2
blacky_echo m0leCon 2020 Quals 24.55 Misc files wu 2
Byte HSCTF 2019 – Misc files wu 2
ROP_til_you_drop BCACTF 2023 – Pwn files wu 1
PopGoesThePrinter CSAW 2019 Quals 43.00 Misc files wu 1
Sentence_To_Hell DanteCTF 2023 24.44 Pwn files wu 1
format_string corCTF 2024 55.00 Pwn files wu 1
simple_echoserver 0CTF 2020 Quals – Pwn files wu 1
SearchEngine 1337UP 2022 22.49 Pwn files wu 1
DESTRUCTINATOR DeconstruCT.F 2021 19.69 Pwn files wu 1
bench_225 UMassCTF 2024 43.10 Pwn files wu 1
ForMatt_Zelinsky BlueHens 2021 22.62 Pwn files wu 1
my_little_pwnie OMH 2021 – Pwn files wu 1
Flag_Shop SunshineCTF 2024 38.57 Pwn files wu 1
grimoire zer0pts 2020 24.56 Misc files wu 1
xsh Rooters 2019 24.23 Misc files wu 1
fmtstr PBjar 2021 23.18 Pwn files wu 1
Jump_Is_Found UMDCTF 2021 – Pwn files wu 1
SmolOverflow UTCTF 2022 – Pwn files wu 1
logbook CyberSecurityRumble 2023 Quals 24.80 Pwn files wu 1
ShoppingList VirSecCon 2020 22.79 Misc files wu 1
pokemonbattle SEETF 2022 – Pwn files wu 1
Unprintable De1CTF 2019 24.28 Misc files wu 1
gambler_supreme b01lers 2022 33.05 Pwn files wu 1
system_write Defcamp 2023 Quals – Pwn files wu 1
The_Calculator X-MAS 2018 – Misc files wu 1
The_Calculator_2.0 X-MAS 2018 – Misc files wu 1
system_leak Defcamp 2023 Quals – Pwn files wu 1
Floormat_Mega_Sale 1337UP 2024 – Pwn files wu 1
Jupiter SunshineCTF 2024 38.57 Misc files wu 1
NoRegVM m0leCon 2023 Quals 53.62 Pwn files wu 1
cat HSCTF 2023 – Pwn files wu 1
form ImaginaryCTF 2023 34.52 Pwn files wu 1
ARMsinthe Hackappatoi 2022 24.71 Pwn files wu 1
WayTooSimple LakeCTF 2022 Quals 23.96 Pwn files wu 1
Note_Server MetaRed 2021 – Pwn files wu 1
Security_Code TMUCTF 2021 – Pwn files wu 1
Simple_Format_Returned MetaCTF 2021 – Pwn files wu 1