$ 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
SU_BABY SUSCTF 2025 – files
SU_JIT16 SUSCTF 2025 – files
SU_PAS_sport SUSCTF 2025 – files
SU_msg_cfgd SUSCTF 2025 – files
SU_text SUSCTF 2025 – files
SafeNote BlitzCTF 2025 23.20 files
Safe_Device HeroCTF 2025 – files
Safe_Gets L3akCTF 2025 24.43 files
Safenote_Pro R3CTF 2025 54.67 files
Sandbox CrateCTF 2025 – files
Santas_Christmas_Calculator MetaCTF 2025 – files
Santas_Workshop BackdoorCTF 2025 – files
Satellite_Command MetaCTF 2025 – files
Saving_The_Environment snakeCTF 2025 Quals 36.65 files
Scavenchat THCon 2025 – files
Scoreboard CRHC 2025 – files
Seashells Shakti 2025 34.10 files
Seccomp_Jail H7CTF 2025 22.56 files
Secret_Mission Shakti 2025 34.10 files
Secret_Note Codegate 2025 Quals – files
SecureEnv_V 0CTF 2025 24.34 files
SecureUnbreakableIllusion R3CTF 2025 54.67 files
Seen_Guessing Nowruz 2025 – files
Seen_Shop Nowruz 2025 – files
Seven TAMUctf 2025 – files
ShallowSeek BCACTF 2025 – files
Shellcode P3rf3ctr00t 2025 – files
Shellphobia BlitzCTF 2025 23.20 files
Shortcake_QL BrunnerCTF 2025 24.66 files
Simple_Notebook_v2.0_b1 NoHackNoCTF 2025 23.47 files
Singleton ASIS 2025 Finals 96.29 files
Size_Doesnt_Matter Pragyan 2025 – files
Snek m0leCon 2025 Quals 75.00 files
Sniper TAMUctf 2025 – files
Snowstorm Srdnlen 2025 – files
Soulkeeper MCTF 2025 Quals – files
Stack TAMUctf 2025 – files
StackSmasher Junior.Crypt 2025 23.13 files
Starship_Registration RITSEC 2025 – files
Stdio_Studio IERAE 2025 – files