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PassTheCert

2023


HTB Authority

Authority is a medium Windows AD box. I discovered Ansible playbooks in a publicly accessible share, containing encrypted variables that, once cracked, provided credentials for the PWM configuration manager. With PWM in config mode, I could make changes without authentication, allowing the capture of clear text LDAP credentials for subsequent WinRM authentication. I also discovered ADCS and a vulnerable certificate template (ESC1). Although I successfully exploited the vulnerability, Kerberos limitations prevented authentication with the generated certificate. To bypass this I used pass-the-cert attack to gain access as Administrator.