HACKvent20 writeup

This year’s HACKvent hosted on competition.hacking-lab.com has been as great as every year.
There was a total amount of 28 awesome challenges with varying difficulties.
HV20.(-1) Twelve steps of christmas
HV20.01 Happy HACKvent 2020
HV20.02 Chinese Animals
HV20.03 Packed gifts
HV20.04 Br❤celet
HV20.05 Image DNA
HV20.13 Twelve steps of christmas
HV20.14 Santa’s Special GIFt
HV20.15 Man Commands, Server Lost
HV20.16 Naughty Rudolph
HV20.17 Santa’s Gift Factory Control
HV20.18 Santa’s lost home
HV20.19 Docker Linter Service
HV20.06 Twelve steps of christmas
HV20.07 Bad morals
HV20.08 The game
HV20.09 Santa’s Gingerbread Factory
HV20.10 Be patient with the adjacent
HV20.11 Chris’mas carol
HV20.12 Wiener waltz
HV20.20 Twelve steps of Christmas
HV20.21 Threatened Cat
HV20.22 Padawanlock
HV20.23 Those who make backups are cowards!
HV20.24 Santa’s Secure Data Storage
HV20.H1 It’s a secret!
HV20.H2 Oh, another secret!
HV20.H3 Hidden in Plain Sight
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Hack The Box – Rope

This article contains my writeup on the machine Rope from Hack The Box. I really enjoyed the box, since it provides a total of three custom binaries, which are supposed to be exploited 🙂

The article is divided into the following parts:

User
    – Initial Recon
    – httpserver
    – Leak Memory Address
    – Exploit Format String Vulnerability
    – Escalating from john to r4j (readlogs)

Root
    – Local Recon
    – contact
    – Bruteforce
    – Libc Leak
    – Final Exploit

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