$ ctf42

#tcache-dup CTF challenges

5 CTF challenges using tcache-dup from 4 CTFs (2018–2021), 5 with writeups. Mostly Misc (80%) and Pwn (20%).

Misc · 4 Pwn · 1

Often combined with

#fastbin 1 #file-structure-attack 1 #unsorted-bin 1 #stdout-file-attack 1 #libc-2.32 1 #safe-linking 1 #heap 1 #malloc-hook-overwrite 1

Challenges

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Challenge CTF Weight Category Has
houseofAtum
#tcache-dup#fastbin#file-structure-attack
 BCTF 2018 – Misc files wu 3
children_tcache
#tcache-dup
 HITCON 2018 – Misc files wu 3
three
#tcache-dup#unsorted-bin#stdout-file-attack
 BCTF 2018 – Misc files wu 2
Meddle
#tcache-dup
 NahamCon 2021 24.98 Pwn files wu 2
how-to-heap
#heap#tcache-dup#malloc-hook-overwrite#safe-linking#libc-2.32
 CyberSecurityRumble 2020 28.00 Misc files wu 2