Openadmin was an easy box that required exploiting a vulnerability in a running web service to get a shell, then escalating privileges laterally to different users to finally escalating to root abusing a sudo nopasswd access configuration.
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
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