CTF challenges & writeups

223 challenges in family ⊕ pwn:heap ✕ clear · browse all techniques

Challenge	CTF	Weight	Category	Has
schnurtelefon #double-free	Hack.lu 2019	68.75	Misc	files wu 1
tcalc #overlapping-chunks	Hack.lu 2019	68.75	Misc	files wu 3
iz_heap_lv1 #tcache-poisoning	ISITDTU 2019 Quals	23.38	Misc	files wu 3
iz_heap_lv2 #poison-null-byte	ISITDTU 2019 Quals	23.38	Misc	files wu 3
CloneWarS #house-of-force	KipodAfterFree 2019	24.61	Misc	files wu 1
CookShow #use-after-free (uaf)	KipodAfterFree 2019	24.61	Misc	files wu 1
SPlaid_Birch #oob-index #splay-tree #heap	PlaidCTF 2019	95.72	Misc	files wu 3
Suffarring #heap-overflow #tcache	PlaidCTF 2019	95.72	Misc	files wu 2
ManyNotes #house-of-orange #thread-arena #tcache-poisoning #one-gadget	RCTF 2019	–	Misc	files wu 2
babyheap #house-of-storm #setcontext #unsorted-bin-attack	RCTF 2019	–	Misc	files wu 2
chat #double-free #tcache-poisoning #got-overwrite	RCTF 2019	–	Misc	files wu 2
pwn6 #heap-exploitation	TAMUctf 2019	–	Misc	files wu 3
SecureKarte #heap #tcache	TokyoWesterns 2019	–	Misc	files wu 3
EncryptionService #use-after-free (uaf)#fastbin #heap-overlap	UTCTF 2019	–	Misc	files wu 2
zero_to_hero #poison-null-byte #tcache-poisoning #double-free	picoCTF 2019	–	Pwn	files wu 3
asvdb #uninitialized-variable #use-after-free (uaf)#double-free #tcache-poisoning #free-hook-one-gadget	ASIS 2018 Finals	55.00	Misc	files wu 3
alien_invasion #heap-off-by-one #poison-null-byte #overlapping-chunks #got-overwrite	CSAW 2018 Quals	30.23	Misc	files wu 3
baby_tcache #poison-null-byte	HITCON 2018	–	Misc	files wu 2
children_tcache #tcache-dup	HITCON 2018	–	Misc	files wu 3
groot #double-free	HITCON 2018	–	Misc	files wu 1
heap_heaven_2 #fastbin	Hack.lu 2018	72.75	Misc	files wu 3
slot_machine #tcache-poisoning	Hack.lu 2018	72.75	Misc	files wu 1
dead_note_lv2 #unsafe-unlink	ISITDTU 2018 Quals	23.38	Misc	files wu 1
dead_note_lv3 #house-of-force	ISITDTU 2018 Quals	23.38	Misc	files wu 1
shop #heap-overflow #got-overwrite #one-gadget	PlaidCTF 2018	90.83	Misc	files wu 3
Rnote4 #no-relro #got-overwrite #heap	RCTF 2018	–	Misc	files wu 2
babyheap #off-by-one #null-byte-poisoning #malloc-hook	RCTF 2018	–	Misc	files wu 3
rnote3 #uninitialized-stack #overlapping-chunks #free-hook	RCTF 2018	–	Misc	files wu 3
stringer #off-by-one #double-free #mmap-chunk #fastbin-attack #malloc-hook	RCTF 2018	–	Misc	files wu 3
pwn02 #off-by-one #null-byte-poisoning #tcache #heap-overlap	WhiteHat 2018 Quals	–	Misc	files wu 3
auir #heap-uaf #double-free #fastbin-attack #libc-leak #c++	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
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
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
Refreshments #off-by-one #fastbin-attack #unsorted-bin	StackSmash 2025	24.00	Pwn	files wu 1
limit #off-by-one #tcache-poisoning #overlapping-chunks	smileyCTF 2025	48.61	Pwn	files wu 1

Challenges