GPOHunter: Active Directory Group Policy Security Analyzer

GPOHunter – Active Directory Group Policy Security Analyzer

GPOHunter is a comprehensive tool designed to analyze and identify security misconfigurations in Active Directory Group Policy Objects (GPOs). It automates security checks and provides detailed reports on potential vulnerabilities, helping administrators secure their environments.

Feature

• Connects to Active Directory using LDAP/LDAPS protocols.
• Supports NTLM authentication and Pass-the-Hash techniques.
• Analyzes all GPOs within the domain.
• Identifies and reports security misconfigurations.
• Displays affected organizational units (OUs) and objects.
• Offers multiple output formats: JSON, CSV, and HTML.
• Provides an option to view detailed XML content of GPO files.

Security Check

Currently, GPOHunter implements the following security checks:

1. Clear Text Password Storage

   • Detects the “ClearTextPassword = 1” setting in GPOs.
   • This setting allows passwords to be stored in unencrypted form, posing a critical security risk by exposing credentials.

2. GPP Passwords (MS14-025)

   • Identifies encrypted passwords within Group Policy Preferences.
   • Examines various GPP files such as Groups.xml, Services.xml, and others.
   • These passwords are encrypted with a known key and can be easily decrypted using public information.

3. NetNTLMv1 Authentication Enabled

   • Detects insecure LmCompatibilityLevel settings.
   • Identifies GPOs that enable NetNTLMv1, which is vulnerable to:
     • Relay attacks when combined with Coerce.
     • Password cracking using rainbow tables.

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