$ ctf42

Misc CTF challenges

3,995 Misc CTF challenges from 420 CTFs (2011–2026), 705 with writeups.

Top misc techniques

#stack-buffer-overflow 44 #format-string 41 #ret2libc 29 #rop 29 #use-after-free 26 #tcache-poisoning 24 #got-overwrite 21 #one-gadget 19 #shellcode 19 #stack-overflow 17 #ret2win 17 #heap-overflow 14 #tcache 13 #buffer-overflow 12 #double-free 11

Challenges

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Challenge CTF Weight Has
MobileBank
#format-string#got-overwrite#dynelf-leak#ret2system
 CTFZone 2018 Quals 23.92 files wu 3
babyecho
#format-string#got-overwrite
 UTCTF 2019 – files wu 3
Global_Warming
#format-string#global-variable-overwrite
 csictf 2020 23.67 files wu 3
full_protection
#format-string#fortify-bypass#canary-leak#rop
 ASIS 2020 Quals 64.97 files wu 3
Armoury
#format-string#canary-leak#ret2libc#pie-leak
 Pragyan 2019 20.69 files wu 3
FireHTTPD
#format-string
 FireShell 2020 24.49 files wu 3
my-first-echo-server
#format-string
 DownUnderCTF 2020 24.44 files wu 3
Caesars_Revenge
#format-string
 HSCTF 2019 – files wu 3
casino
#format-string
 FireShell 2019 24.49 files wu 3
neighbor_c
#file-structure-attack
 TokyoWesterns 2018 – files wu 3
heap_heaven_2
#fastbin
 Hack.lu 2018 72.75 files wu 3
SignIn
#error-based-sqli
 N1CTF 2020 36.00 files wu 3
leaving_soon
#drm-key-recovery
 justCTF 2024 Quals 77.17 files wu 3
secure_keymanager
#double-free#fastbin-dup#format-string#got-overwrite
 SECCON 2017 Quals 30.00 files wu 3
profile
#cpp-string#arbitrary-read#one-gadget
 SECCON 2018 Quals 36.92 files wu 3
20000
#command-injection#filter-bypass
 Codegate 2019 Quals – files wu 3
Zooo
#command-injection#argument-injection
 RaziCTF 2020 21.91 files wu 3
pinger
#command-injection
 RaziCTF 2020 21.91 files wu 3
RemoteSchool
#buffer-overflow#strncpy#write-what-where#return-address-overwrite
 AUCTF 2020 – files wu 3
ezpz
#buffer-overflow#ret2win#pie-bypass
 WPICTF 2018 – files wu 3
Random_Present
#buffer-overflow#ret2plt#got-leak#ret2libc
 X-MAS 2018 – files wu 3
Return_to_Sender
#buffer-overflow
 HSCTF 2019 – files wu 3
swap_returns
#arbitrary-write#swap-primitive
 TokyoWesterns 2018 – files wu 3
detective
#arbitrary-write#oracle
 TSG 2020 – files wu 3
CTF_Coin
#android#ssl-pinning-bypass#frida#parameter-tampering
 RaziCTF 2020 21.91 files wu 3
chasing_a_lock
#android#jadx#reimplementation
 RaziCTF 2020 21.91 files wu 3
Friends
#android#api-response-inspection
 RaziCTF 2020 21.91 files wu 3
Mobile_One
#android
 HacktivityCon 2020 21.86 files wu 3
forbidden
#aes-gcm#forbidden-attack#nonce-reuse
 VolgaCTF 2018 Quals 25.12 files wu 3
Cached_File_Viewer TSG 2024 – files wu 3
Cached_File_Viewer_2 TSG 2024 – files wu 3
Scattered_in_the_fog TSG 2024 – files wu 3
prime_shellcode TSG 2024 – files wu 3
simple_calc TSG 2024 – files wu 3
Be_biLlionAireS_Today BlazCTF 2023 25.00 files wu 3
Corny_Kernel UIUCTF 2023 – files wu 3
Cosmic_Radiation Paradigm 2023 25.00 files wu 3
Dropper Paradigm 2023 25.00 files wu 3
Eazy_NFT BlazCTF 2023 25.00 files wu 3
Free_Real_Estate Paradigm 2023 25.00 files wu 3