$ 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
Haunted_Library DEADFACE 2025 – files
HeapX SunshineCTF 2025 51.65 files
Heap_Banging CrewCTF 2025 38.93 files
Heap_Heap_Hooray P3rf3ctr00t 2025 – files
Heap_Heap_Hooray_2 P3rf3ctr00t 2025 – files
Heap_Jail CrewCTF 2025 38.93 files
Heap_Of_The_Brave Pragyan 2025 – files
Heapie_2 CrateCTF 2025 – files
Heapstar WorldWide 2025 24.48 files
Hexstore JerseyCTF 2025 24.73 files
Hidden_Key_Recovery PwnMe 2025 Quals 24.95 files
Holy_cow_revenge PwnMe 2025 Quals 24.95 files
Holy_cow_revenge2 PwnMe 2025 Quals 24.95 files
House LINE 2025 – files
House_of_Fruits Auvergnhack 2025 – files
Hyprice Glacier 2025 – files
IEEE_DANCER niteCTF 2025 – files
INTelligent CPCTF 2025 – files
Iconv_Service FullWeakEngineer 2025 24.60 files
Identity HeroCTF 2025 – files
Index ScriptCTF 2025 – files
Index_2 ScriptCTF 2025 – files
Infinite_Connect_Four GreyCatTheFlag 2025 32.92 files
Insanity_Check Kind4SUS 2025 – files
Interesting Pragyan 2025 – files
Interns_Project DawgCTF 2025 69.00 files
Internship GoogleCTF 2025 – files
Intro_to_PWN_1 CSCG 2025 – files
Intro_to_PWN_2 CSCG 2025 – files
Intro_to_PWN_3 CSCG 2025 – files
Is_this_web snakeCTF 2025 Quals 36.65 files
Its_a_me_Jumpioi StackSmash 2025 24.00 files
JAMP bi0sCTF 2025 95.79 files
JShellCode GPN 2025 – files
JWarmup NNS 2025 – files
Job_Security WHY 2025 Finals – files
Julia_ni_Jailbreak FullWeakEngineer 2025 24.60 files
Jumpios_Love_Letter StackSmash 2025 24.00 files
Just_Parry_Lol DawgCTF 2025 69.00 files
KList ASIS 2025 Finals 96.29 files