$ 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
AHC_Average_Heap_Challenge PascalCTF 2026 24.00 files
AI_Recreation RAMunchers 2026 23.30 files
ASCII_Driver THJCC 2026 – files
A_More_Complicated_Example RAMunchers 2026 23.30 files
A_Tiny_Profile_Manager BKISC 2026 – files
Abort JerseyCTF 2026 37.00 files
Acroform V1T 2026 22.14 files
Addrs_hold_the_key Kashi 2026 21.78 files
Angelic_Minigolf 47CON 2026 – files
Apex Engine HI Cyber Con CTF 2026 – files
Arcane_Echoes HackAstra 2026 – files
Ask_For_A_Demo RAMunchers 2026 23.30 files
Astralogy KalmarCTF 2026 49.97 files
Atlas_Control_Panel HackAstra 2026 – files
Average_Heap_Challenge 0xV01D 2026 19.48 files
BSS_BOF tkbctf 2026 25.00 files
BYOC NNS 2026 – files
Baby_DOS_pwn NDIASAutomotiveIoT 2026 25.00 files
Baby_PHP THJCC 2026 – files
Baby_Pwn FortID 2026 45.00 files
Baby_Shellcode THEMCTF 2026 – files
Baby_bof UofTCTF 2026 33.49 files
BackToThe2048 Codegate 2026 Quals – files
Bake_a_Pi RITSEC 2026 – files
Bandaids_Help_me_Heal DalCTF 2026 24.90 files
Barber_Shop HackAstra 2026 – files
Basalt_Chamber 0xV01D 2026 19.48 files
Biafra_VII_Fiesta_and_Farewell HiveCTF 2026 25.00 files
Bins_Ricettoni CyberGame 2026 – files
Blind_Record_Entry Pragyan 2026 1.84 files
Bloatware CSCG 2026 – files
Boiled_Water plfanzen 2026 25.00 files
Breaking_Arena RAMunchers 2026 23.30 files
Brick_Workshop UMassCTF 2026 65.95 files
Bring_The_Snake AITU 2026 Quals 24.59 files
Broken_Terminal PsychCTF 2026 24.51 files
Brunner_Stocks BrunnerCTF 2026 24.66 files
Buffer_Visualizer CPCTF 2026 – files
Bytecoin BYUCTF 2026 – files
Calculator UofTCTF 2026 33.49 files