$ ctf42

#heap-overlap CTF challenges

5 CTF challenges using heap-overlap from 4 CTFs (2018–2023), 5 with writeups. Mostly Pwn (60%) and Misc (40%).

Pwn · 3 Misc · 2

Often combined with

#use-after-free 2 #tcache 2 #fastbin 1 #null-byte-off-by-one 1 #out-of-bounds-write 1 #malloc-hook-overwrite 1 #tcache-poisoning 1 #off-by-one 1 #null-byte-poisoning 1

Challenges

Filter and sort these in the challenge browser →

Challenge CTF Weight Category Has
pwn02
#off-by-one#null-byte-poisoning#tcache#heap-overlap
 WhiteHat 2018 Quals – Misc files wu 3
EncryptionService
#use-after-free (uaf)#fastbin#heap-overlap
 UTCTF 2019 – Misc files wu 2
Maltigriti
#use-after-free (uaf)#heap-overlap
 1337UP 2023 24.23 Pwn files wu 1
plang
#out-of-bounds-write#heap-overlap#tcache-poisoning#malloc-hook-overwrite
 0CTF 2019 Quals – Pwn files wu 1
BabyHeap
#null-byte-off-by-one#heap-overlap#tcache
 0CTF 2019 Quals – Pwn files wu 1