$ ctf42

#free-hook CTF challenges

7 CTF challenges using free-hook from 7 CTFs (2018–2024), 7 with writeups. Mostly Misc (57%) and Pwn (43%).

Misc · 4 Pwn · 3

Often combined with

#tcache-poisoning 2 #stack-buffer-overflow 1 #format-string 1 #proc-self-maps 1 #use-after-free 1 #libcob 1 #negative-size 1 #heap-overflow 1 #stdout-file-leak 1 #off-by-one 1 #fastbin 1 #unsorted-bin-leak 1 #uninitialized-stack 1 #overlapping-chunks 1 #heap-leak 1

Challenges

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Challenge CTF Weight Category Has
rnote3
#uninitialized-stack#overlapping-chunks#free-hook
 RCTF 2018 – Misc files wu 3
Oldnote
#negative-size#heap-overflow#stdout-file-leak#free-hook
 PoseidonCTF 2020 – Misc files wu 2
curve
#format-string#stack-buffer-overflow#free-hook
 PBjar 2021 23.18 Pwn files wu 2
The_Cobol_Job
#use-after-free (uaf)#libcob#free-hook#proc-self-maps
 PlaidCTF 2021 99.64 Pwn files wu 1
USER-ADMINISTRATION
#tcache-poisoning#free-hook#heap-leak
 Rooters 2019 24.23 Misc files wu 1
BabyFactory
#off-by-one#fastbin#unsorted-bin-leak#free-hook
 PwnThyBytes 2019 25.00 Misc files wu 1
baby_talk
#heap#off-by-null#house-of-einherjar#tcache-poisoning#free-hook
 DiceCTF 2024 Quals 54.40 Pwn files wu 1