FEAT: Add support for Administrative Units

[zh54321]

Description:

Administrative Units are not considered by Bloodhound / Azurehound and therefore lead to wrong edges.

Are you intending to fix this bug?

No

Component(s) Affected:

Bloodhound edges where Administrative Units are involved (example AZResetPassword).

Steps to Reproduce:

1. Create a new user in Entra ID
2. Create an administrative unit in Entra ID
3. Add a role assignment (example Privileged Authentication Administrator) to the user set the scope to the administrative unit
4. Collect the data with Azurehound and import them
5. Check if there are any paths between the created user and the Global Admin

Expected Behavior:

The edges should not be created.

Actual Behavior: Screenshots/Code Snippets/Sample Files:

Bloodhound CE shows the edge AZResetPassword to the Global Admin:

However, since the role assignment for Normaluser is scoped to an administrative unit, that edge is wrong.

Only one user is a member of the administrative unit:

Therefore, the user can't reset the pw of the global admin:

How to fix:

• Change Azurehound to also collect information about administrative units (data is not present in the collected json file)
• Change processing to only draw the edges of roles which are scoped to an AU to the members of the AU.

Environment Information:

Bloodhound CE: 6.1.0
Neo4j: 4.4.38
PostgreSQL: 16.4 (Debian 16.4-1.pgdg120+2)
GraphDB version: v6.1.0
API Version: v6.1.0
AzureHound: v2.2.1

Contributor Checklist:

• I have searched the issue tracker to ensure this bug hasn't been reported before or is not already being addressed.
• I have provided clear steps to reproduce the issue.
• I have included relevant environment information details.
• I have attached necessary supporting documents.