Offensive security assessments

Active Directory (AD) - Basics Understanding

Within Active Directory, there are three built-in groups that comprise the highest privilege groups in the director

Why it matters

- Domain: A logical group of network objects (users, computers, devices) that share a common directory database. - Forest: A collection of one or more domains that share a common schema and configuration. - Tree: A hierarchy of one or more domains that are connected in a contiguous namespace. - Organizational Unit (OU): A container within a domain used to organize users, groups, and computers. OUs can be nested. - Group Policy: A feature that allows administrators to implement specific configurations for users and computers within the domain. - Schema: Defines the objects and attributes that the directory service can contain. - Global Catalog: A distributed data engagement that contains a searchable, partial representation of every object in every domain in a forest. - Active Directory Domain Services (AD DS): The core service that provides the directory and authentication services. - Active Directory Lightweight Directory Services (AD LDS): A lighter version of AD DS, used for directory-enabled applications. - Active Directory Federation Services (AD FS): Provides single sign-on and identity federation for users accessing applications across different organizations. - Primary Domain Controller (PDC): The main domain controller responsible for processing authentication requests and managing changes in a domain. - Backup Domain Controller (BDC): An older term (from NT4 days) for a domain controller that provides backup and redundancy for the PDC. - Replication: The process of copying changes made on one domain controller to others to ensure consistency. - Trust Relationship: A connection between two domains that allows users from one domain to access resources in another. - Active Directory Database: The database file (NTDS.dit) that stores the directory data and objects. - DNS Integration: Active Directory relies on DNS for domain controller location and service discovery. - Authentication Protocols: Protocols like Kerberos and NTLM that handle authentication requests. - Active Directory is the service that organizes and manages network resources. - Domain Controllers are servers that implement AD services, handling user authentication and managing directory data. - Active Directory is the framework for managing network resources. - Domain Controllers are the servers that implement the AD services, facilitating user authentication and data management. Within Active Directory, there are three built-in groups that comprise the highest privilege groups in the director

How we test it

Our operators follow a structured checklist for this topic, adapted to your API surface and authentication model.

Testing approach

  • Structured validation of Active Directory (AD) - Basics Understanding during scoped assessment.
  • Evidence captured with reproducible steps for your engineering team.

What we look for

  • Misconfigurations and control gaps related to Active Directory (AD) - Basics Understanding.
  • Exploitable paths that could affect confidentiality, integrity, or availability.

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