Offensive security assessments

Extended Active Directory (AD) Terminology

We validate this area during scoped assessments, documenting impact and remediation guidance.

Why it matters

- Forest – The highest logical structure in AD, containing one or more domains. - Domain – A logical grouping of users, computers, and resources managed under a single security boundary. - Organizational Unit (OU) – A container within a domain used for organizing users, computers, and policies. - Trusts – Relationships between domains allowing resource sharing and authentication. - RID (Relative Identifier) – A unique value assigned to each object within a domain, forming part of the SID. - FSMO Roles (Flexible Single Master Operations) – Specialized roles ensuring AD consistency: - Schema Master – Maintains schema updates across the forest. - Domain Naming Master – Manages domain additions and removals in the forest. - RID Master – Allocates RIDs to domain controllers. - PDC Emulator – Handles password changes, replication, and legacy system compatibility. - Infrastructure Master – Maintains object references across domains. - Replication – Synchronization of AD data across domain controllers. - SYSVOL – A shared folder containing Group Policy and logon scripts, replicated across DCs. - SAM (Security Account Manager) – A database storing user credentials on local systems. - KRBTGT Account – A special account responsible for Kerberos ticket generation. - TGT (Ticket Granting Ticket) – A Kerberos ticket used to request service tickets. - TGS (Ticket Granting Service) – Issues service tickets based on a valid TGT. - Shadow Credentials – Abusing AD Certificate Services (AD CS) to forge authentication. - SID History – Stores previous SIDs of migrated objects to maintain access. - AdminSDHolder – A security mechanism protecting privileged accounts from unauthorized modifications. - DSRM (Directory Services Restore Mode) – A recovery mode for restoring Active Directory. - GPP (Group Policy Preferences) – Legacy settings that sometimes expose plaintext credentials. - NTDS.dit – The Active Directory database file containing password hashes and directory information. - ZeroLogon – A vulnerability allowing privilege escalation by exploiting Netlogon. - Kerberoasting – Extracting and cracking Kerberos service tickets to reveal plaintext passwords. - AS-REP Roasting – Exploiting users with disabled pre-authentication to retrieve encrypted credentials. - LAPS (Local Administrator Password Solution) – A security feature that manages local admin passwords on domain-joined machines. - RBCD (Resource-Based Constrained Delegation) – A Kerberos feature often abused for privilege escalation. - SDProp (Security Descriptor Propagation) – Ensures inherited permissions are applied correctly in AD. - MS14-068 (Forged PAC Attack) – A vulnerability allowing domain admin privilege escalation.

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 Extended Active Directory (AD) Terminology during scoped assessment.
  • Evidence captured with reproducible steps for your engineering team.

What we look for

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

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