$ ctf42

#malloc-hook-overwrite CTF challenges

6 CTF challenges using malloc-hook-overwrite from 4 CTFs (2018–2020), 6 with writeups. Mostly Misc (50%) and Pwn (50%).

Misc · 3 Pwn · 3

Often combined with

#heap 2 #double-free 2 #fastbin-dup 2 #tcache-poisoning 2 #fsop 1 #mmap-threshold-overwrite 1 #safe-linking 1 #tcache-dup 1 #libc-2.32 1 #overlapping-chunks 1 #off-by-one 1 #out-of-bounds-write 1 #heap-overlap 1 #one-gadget 1 #house-of-spirit 1

Challenges

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Challenge CTF Weight Category Has
popping_caps CSAW 2019 Quals 43.00 Misc files wu 3
how-to-heap CyberSecurityRumble 2020 28.00 Misc files wu 2
nullptr ALLES 2020 – Misc files wu 2
plang 0CTF 2019 Quals – Pwn files wu 1
BabyHeap 0CTF 2018 Quals – Pwn files wu 1
freenote2018 0CTF 2018 Finals – Pwn files wu 1