Challenge Overview

You are hired by a company as a penetration tester. The system administrator wants you to conduct an internal penetration test on the system. The company wants to make sure that the services that are running are secured in such a manner that no unauthorized individual can access their system. As a penetration tester your job is to find flaws in the system and get full access to the system. Your target machine is running Ubuntu and has an IP address 10.10.1.18. The ssh credential are paul and H4ckM3, use these creds to access the machine and conduct an internal pen test. This machine teaches you hands-on knowledge in Linux privilege escalation and system hacking.

What You Will Learn

  • Post-exploitation enumeration skills, specifically identifying privilege escalation vectors after gaining SSH access with valid credentials.
  • Understanding Linux capabilities, including how they differ from traditional SUID-based privilege escalation mechanisms.
  • Proficiency in using the getcap command to discover binaries with elevated capabilities and assessing their security impact.
  • Exploiting the cap_dac_override capability, which allows bypassing file permission checks to access restricted files such as the root user’s private SSH key.
  • Leveraging stolen credentials (e.g., root’s private SSH key) to achieve full root compromise, demonstrating a structured internal penetration testing workflow.

Program Curriculum

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