$ ctf42

#poison-null-byte CTF challenges

6 CTF challenges using poison-null-byte from 5 CTFs (2017–2020), 6 with writeups. Mostly Misc (83%) and Pwn (17%).

Misc · 5 Pwn · 1

Often combined with

#tcache-poisoning 2 #double-free 1 #seccomp-bypass 1 #tcache-stash-unlink 1 #got-overwrite 1 #overlapping-chunks 1 #heap-off-by-one 1

Challenges

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Challenge CTF Weight Category Has
zero_to_hero
#poison-null-byte#tcache-poisoning#double-free
 picoCTF 2019 – Pwn files wu 3
iz_heap_lv2
#poison-null-byte
 ISITDTU 2019 Quals 23.38 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
yet_another_house
#poison-null-byte#tcache-stash-unlink#tcache-poisoning#seccomp-bypass
 ASIS 2020 Finals 64.97 Misc files wu 1
ghost_in_the_heap
#poison-null-byte
 HITCON 2017 Quals 69.38 Misc files wu 1