$ ctf42

Pwn CTF challenges

3,922 Pwn CTF challenges from 381 CTFs (2011–2026), 669 with writeups.

Top pwn techniques

#stack-buffer-overflow 48 #format-string 47 #ret2win 41 #rop 35 #use-after-free 31 #shellcode 25 #ret2libc 21 #tcache-poisoning 18 #got-overwrite 16 #heap 16 #buffer-overflow 15 #stack-pivot 14 #heap-overflow 14 #srop 11 #gets 11

Challenges

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Challenge CTF Weight Has
gelcode
#shellcode
 HSCTF 2021 – files wu 1
sharing
#shared-ptr#refcount-underflow#use-after-free (uaf)
 RCTF 2021 – files wu 1
Supervisor
#seccomp-notify-escape
 L3akCTF 2026 34.47 files wu 1
Syscalls
#seccomp#shellcode#orw
 UIUCTF 2024 – files wu 1
Shellcraft
#seccomp#shellcode#orw
 Securinets 2022 Quals 50.11 files wu 1
Sandboxed_ROP
#seccomp#rop
 BlueHens 2021 22.62 files wu 1
Piet_2
#saved-rbp-pivot
 L3akCTF 2026 34.47 files wu 1
hug-me-squeeze-me
#rwx-page
 FE-CTF 2022 – files wu 1
n1proxy
#rust-use-after-free
 N1CTF 2023 97.33 files wu 1
InspectorGadget
#ruby-deserialization#gadget-chain
 BSidesTLV 2021 23.94 files wu 1
Discrete_Mathematics
#rop-chain#ret2win
 BCACTF 2021 – files wu 1
Symmetry_3
#rop-chain
 KalmarCTF 2024 24.21 files wu 1
santascomplainthotline
#rop#stack-buffer#ret2libc
 X-MAS 2022 – files wu 1
orxw
#rop#seccomp-orw#open-read-write
 Balsn 2021 37.00 files wu 1
one-and-done
#rop#ret2syscall
 TAMUctf 2022 – files wu 1
vacation-2
#rop#ret2libc
 TJCTF 2022 – files wu 1
gosu_bof
#rop#ret2csu#stack-pivot
 SECCON 2021 – files wu 1
BingChilling
#rop#loongarch64#bof
 UTCTF 2023 – files wu 1
ROP_til_you_drop
#rop#format-string
 BCACTF 2023 – files wu 1
groppling-hook
#rop
 TJCTF 2023 – files wu 1
rop_golf
#rop
 TAMUctf 2022 – files wu 1
Ropme
#rop
 BSidesSF 2021 23.94 files wu 1
Riscky
#riscv-shellcode
 NahamCon 2022 24.61 files wu 1
riscy-stack_Userspace
#risc-v#rwx-page#note-oob#shellcode
 CyberSecurityRumble 2023 Quals 24.80 files wu 1
zenerational_aura
#retbleed#kernel-exploit#speculative-execution
 corCTF 2025 82.00 files wu 1
Handshake
#ret2win#stack-buffer-overflow
 TAMUctf 2021 – files wu 1
SANTA
#ret2win#stack-buffer-overflow
 TFC 2021 – files wu 1
Return_to_Lose
#ret2win
 LYKNCTF 2026 – files wu 1
aplet123
#ret2win
 LA 2024 – files wu 1
ed
#ret2win
 HSCTF 2023 – files wu 1
trivial
#ret2win
 TAMUctf 2022 – files wu 1
Jump_King
#ret2win
 MetaRed 2021 – files wu 1
warmup2
#ret2libc-one-gadget
 MapleCTF 2022 24.05 files wu 1
interview-opportunity
#ret2libc#stack-buffer-overflow
 DiceCTF 2022 24.82 files wu 1
ret2libc
#ret2libc#rop#libc-leak
 PBjar 2021 23.18 files wu 1
missme
#ret2libc#rop
 S4CTF 2021 24.52 files wu 1
coffee_maker
#ret2libc#got-overwrite#custom-compression
 UMassCTF 2022 23.56 files wu 1
stuff
#ret2libc
 LA 2023 – files wu 1
linonophobia
#ret2libc
 ImaginaryCTF 2021 – files wu 1
NO-OUTPUT
#ret2dlresolve#tcache-poisoning#blind-pwn
 darkCON 2021 24.06 files wu 1