CTF challenges & writeups

3995 challenges · browse all techniques

Challenge	CTF	Weight	Category	Has
swap_returns #arbitrary-write #swap-primitive	TokyoWesterns 2018	–	Misc	files wu 3
forbidden #aes-gcm #forbidden-attack #nonce-reuse	VolgaCTF 2018 Quals	25.12	Misc	files wu 3
breakingout #negative-index #got-overwrite #one-gadget	WPICTF 2018	–	Misc	files wu 1
ezpz #buffer-overflow #ret2win #pie-bypass	WPICTF 2018	–	Misc	files wu 3
pwn01 #format-string #got-overwrite #ret2libc	WhiteHat 2018 Quals	–	Misc	files wu 3
pwn02 #off-by-one #null-byte-poisoning #tcache #heap-overlap	WhiteHat 2018 Quals	–	Misc	files wu 3
Greetings_from_Santa #buffer-overflow #ret2win #system	X-MAS 2018	–	Misc	files wu 1
I_want_that_toy #format-string #info-leak #rop #ret2libc	X-MAS 2018	–	Misc	files wu 3
Random_Present #buffer-overflow #ret2plt #got-leak #ret2libc	X-MAS 2018	–	Misc	files wu 3
The_Calculator #format-string #arbitrary-write	X-MAS 2018	–	Misc	files wu 1
The_Calculator_2.0 #format-string #arbitrary-write	X-MAS 2018	–	Misc	files wu 1
Green_Computing_1 #qemu-monitor	hxp 2018	42.00	Misc	files wu 1
Green_Computing_2 #acpi-dsdt	hxp 2018	42.00	Misc	files wu 1
poor_canary #rop	hxp 2018	42.00	Misc	files wu 3
pwn_game #integer-signedness	hxp 2018	42.00	Misc	files wu 3
yunospace #shellcode	hxp 2018	42.00	Misc	files wu 3
auir #heap-uaf #double-free #fastbin-attack #libc-leak #c++	CSAW 2017 Quals	24.61	Misc	files src wu 3
scv #stack-buffer-overflow #canary-leak #rop	CSAW 2017 Quals	24.61	Misc	files src wu 3
zone #heap-off-by-one #linked-list-overflow #got-overwrite	CSAW 2017 Quals	24.61	Misc	files src wu 3
babyfs #file-vtable-hijack	HITCON 2017 Quals	69.38	Misc	files wu 2
damocles #heap-overflow	HITCON 2017 Quals	69.38	Misc	files wu 1
ghost_in_the_heap #poison-null-byte	HITCON 2017 Quals	69.38	Misc	files wu 1
ragnarok #use-after-free (uaf)	HITCON 2017 Quals	69.38	Misc	files wu 2
real-ruby-escaping #ruby-sandbox-escape	HITCON 2017 Quals	69.38	Misc	files wu 1
start #rop	HITCON 2017 Quals	69.38	Misc	files wu 3
two #one-gadget	HITCON 2017 Quals	69.38	Misc	files wu 1
babystack #format-string #stack-buffer-overflow	SECCON 2017 Quals	30.00	Misc	files wu 3
election #off-by-one #null-byte-poisoning #malloc-hook	SECCON 2017 Quals	30.00	Misc	files wu 3
secure_keymanager #double-free #fastbin-dup #format-string #got-overwrite	SECCON 2017 Quals	30.00	Misc	files wu 3
video_player #use-after-free (uaf)#fastbin-attack #vtable-hijack #malloc-hook	SECCON 2017 Quals	30.00	Misc	files wu 2
flagcheck67	ScriptCTF 2026	–	Misc	files wu 1
impossible_stego	SekaiCTF 2026	79.25	Misc	files wu 1
Babel	TRX 2026	–	Misc	files wu 1
emacsjail2	UIUCTF 2026	–	Misc	files wu 1
jail	UIUCTF 2026	–	Misc	files wu 1
smaller_jail	UIUCTF 2026	–	Misc	files wu 1
Beginner	m0leCon 2026	75.00	Misc	files wu 1
Seed_Fund	BITSCTF 2025	–	Misc	files wu 1
Mind_Boggle #brainfuck #nested-encoding	BuckeyeCTF 2025	–	Misc	files wu 1
Tons_of_Fun #ton-smart-contract	BuckeyeCTF 2025	–	Misc	files wu 1

Challenges