$ 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
Snaking SAS 2026 Quals 31.00 files
Stack_BOF tkbctf 2026 25.00 files
Stacking_Flags DawgCTF 2026 66.64 files
Stacking_Melodies DawgCTF 2026 66.64 files
StaleMate V1T 2026 22.14 files
StaleMate_Revenge V1T 2026 22.14 files
Starlink UniVsThreats 2026 Quals 18.35 files
Sticker_Booth FortID 2026 45.00 files
Stork DEFCON 2026 Quals 63.22 files
String_Peek_and_Poke FortID 2026 45.00 files
String_SaaS CSCG 2026 – files
String_Sanitizer_As_A_Service Kind4SUS 2026 – files
Sukkar_Stash 0xV01D 2026 19.48 files
Symbolischer_Ring plfanzen 2026 25.00 files
THJCC_file_upload_server THJCC 2026 – files
Talking_Mirror Pragyan 2026 1.84 files
Task_Manager TAMUctf 2026 – files
Taste NewYear 2026 23.42 files
Temporal BlueHens 2026 44.77 files
TerViMator Pragyan 2026 1.84 files
The_Revenge_of_Womp_Womp EHAX 2026 – files
The_first_time_I_saw_the_product_it_was_a_product_that_made_it_into CPCTF 2026 – files
The_perfect_fruit_salad FromDuskTillDawn 2026 Quals 20.14 files
The_perfect_fruit_salad_Revenge FromDuskTillDawn 2026 Quals 20.14 files
TinyIRC Codegate 2026 Quals – files
Titan Relay HI Cyber Con CTF 2026 – files
Train_Dispatch_Simulator Universal 2026 25.00 files
Treasure_Hunter Bearcat 2026 – files
Two_words_One_problem BoroCTF 2026 – files
Ultimate_Parallel_Runner Bhackari 2026 – files
VFS_Stack NCTF 2026 – files
Very_Security_Shell THJCC 2026 Summer – files
Video_Killed_the_PWN_Star DalCTF 2026 24.90 files
Void Securinets 2026 Quals 85.12 files
WOM HiveCTF 2026 25.00 files
Warden 0xFUN 2026 17.74 files
Washing_Machine_as_a_Service Bhackari 2026 – files
Wav_Editor Bhackari 2026 – files
What_you_have 0xFUN 2026 17.74 files
Whats_the_Time TexSAW 2026 41.59 files