$ ctf42

#malloc-hook CTF challenges

8 CTF challenges using malloc-hook from 5 CTFs (2017–2021), 8 with writeups. Mostly Misc (88%) and Pwn (12%).

Misc · 7 Pwn · 1

Often combined with

#fastbin-attack 4 #off-by-one 4 #null-byte-poisoning 2 #one-gadget 2 #tcache-poisoning 2 #overlapping-chunks 1 #heap-overflow 1 #double-free 1 #mmap-chunk 1 #negative-index 1 #unsorted-bin-leak 1 #use-after-free 1 #vtable-hijack 1

Challenges

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Challenge CTF Weight Category Has
babyheap
#off-by-one#null-byte-poisoning#malloc-hook
 RCTF 2018 – Misc files wu 3
election
#off-by-one#null-byte-poisoning#malloc-hook
 SECCON 2017 Quals 30.00 Misc files wu 3
stringer
#off-by-one#double-free#mmap-chunk#fastbin-attack#malloc-hook
 RCTF 2018 – Misc files wu 3
Diary
#heap-overflow#fastbin-attack#overlapping-chunks#malloc-hook
 Balsn 2020 25.00 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
note
#negative-index#tcache-poisoning#malloc-hook#one-gadget
 RCTF 2020 – Misc files wu 2
Heap_Heap
#unsorted-bin-leak#tcache-poisoning#malloc-hook#one-gadget
 S4CTF 2021 24.52 Pwn files wu 1
snake
#off-by-one#fastbin-attack#malloc-hook
 SCTF 2020 – Misc files wu 1