$ 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
kapara BSidesTLV 2020 25.00 files wu 1
kikoo_4_ever SharkyCTF 2020 24.29 files wu 1
pwnhub_collection Hack.lu 2020 87.94 files wu 1
shattered HSCTF 2020 – files wu 1
through-the-backdoor Hack.lu 2020 87.94 files wu 1
tthttpd ASIS 2020 Quals 64.97 files wu 1
Betstar_5000 watevrCTF 2019 24.92 files wu 1
CyberRumble SunshineCTF 2019 25.00 files wu 1
InsanePwn kksctf 2019 – files wu 1
Odd_Multiplier TSG 2019 – files wu 1
Silk_road_II ASIS 2019 Quals 61.07 files wu 1
Silk_road_III ASIS 2019 Quals 61.07 files wu 1
Super_Smash_Bros TSG 2019 – files wu 1
not_BadUSB C3CTF 2019 24.75 files wu 1
series ASIS 2019 Finals 61.07 files wu 1
splitcode C3CTF 2019 24.75 files wu 1
straw_clutcher BSidesSF 2019 25.00 files wu 1
BBQ TokyoWesterns 2018 – files wu 1
EscapeMe TokyoWesterns 2018 – files wu 1
Green_Computing_1_fix hxp 2018 42.00 files wu 1
ReadableKernelModule TokyoWesterns 2018 – files wu 1
exploitclass P.W.N 2018 – files wu 1
secret_message SECCON 2018 Quals 36.92 files wu 1
sftp GoogleCTF 2018 Quals – files wu 1
online_candy_store SECCON 2017 Quals 30.00 files wu 1
.NETT_hier CSCG 2026 – files
0x1337c0dec0ffee Kind4SUS 2026 – files
2Blue2Hen BlueHens 2026 44.77 files
2d_to_3d BlueHens 2026 44.77 files
2vm plfanzen 2026 25.00 files
300 INCOGNITO 2026 – files
64_is_life BoroCTF 2026 – files
67_login_system NoHackNoCTF 2026 23.47 files
67jail THJCC 2026 Summer – files
AI_Approved TraceBash 2026 25.00 files
AI_Slop BoroCTF 2026 – files
A_Jarring_Amount_of_Cracking TallDwarfHostingHostingTakeover 2026 25.00 files
A_Little_Penguins_Starry_Sky_Observation THJCC 2026 Summer – files
A_Matter_of_Time Crackmes.oneReverseEngineering 2026 – files
A_Safe_BIP39_Backup Hardware 2026 – files