Zetta is a hard box in which you have to leak the machine’s IPv6 address to be able to gain access. After that, rsync credential bruteforcing and a SQL injection lead to privilege escalation to root.
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Recently the Qualys Research Team did an amazing job discovering a Heap overflow vulnerability in Sudo. In the next sections, we will analyze the bug and we will write an exploit to gain root privileges on Debain 10.
Rope2 by R4J has been my favorite box on HackTheBox by far. It wasn’t really related to pentesting, but was an immersive exploit dev experience