Bad Successor - VIEW DATA IN ATTRIBUTES "msDS-groupMSAMembership", "msDS-DelegatedMSAState", "msDS-ManagedAccountPrecededByLink"

Bad-Successor-VIEW-DATA.ps1

# ================================================================================================================
# VIEW DATA IN ATTRIBUTES "msDS-groupMSAMembership", "msDS-DelegatedMSAState", "msDS-ManagedAccountPrecededByLink"
# ================================================================================================================
#
# SOURCE: https://gist.github.com/zjorz/e49657dab853470b683908ab32a0f51f
#
<#
MIT License

Copyright (c) 2025 Semperis Technologies Inc. All rights reserved.

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of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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The above copyright notice and this permission notice shall be included in all
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

DISCLAIMER: This project is licensed under the terms of the MIT license, and
is provided for educational and informational purposes only. It is intended
to promote awareness and responsible remediation of security vulnerabilities
that may exist on systems you own or are authorized to test. Unauthorized use
of this information for malicious purposes, exploitation, or unlawful access
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#>

# The DN Of The dMSA To Target
$dMSADN = "<DN Of The dMSA To Target>"

Invoke-Command -ArgumentList $dMSADN -ScriptBlock {
	Param (
		$dMSADN
	)

	Clear-Host

	$thisADDomain = [System.DirectoryServices.ActiveDirectory.Domain]::GetComputerDomain()
	$rwdcPDCFQDN = $thisADDomain.PdcRoleOwner.Name

	Add-Type -AssemblyName System.DirectoryServices.Protocols -ErrorAction Stop
	[Timespan]$requestTimeout = (New-Object System.TimeSpan(0,0,120)) # Default: 120 seconds
	$ldapDirectoryID = New-Object -TypeName System.DirectoryServices.Protocols.LdapDirectoryIdentifier -ArgumentList $ldapServerFQDN, $ldapServerPort, $true, $false
	$ldapSearchRequest = New-Object System.DirectoryServices.Protocols.SearchRequest
	$ldapAuthType = [System.DirectoryServices.Protocols.AuthType]::Negotiate
	$ldapConnection = New-Object -TypeName System.DirectoryServices.Protocols.LdapConnection -ArgumentList $ldapDirectoryID, $null, $ldapAuthType
	$ldapConnection.SessionOptions.Sealing = $true
	$ldapConnection.SessionOptions.Signing = $true
	$ldapSearchRequest.DistinguishedName = $dMSADN
	$ldapSearchRequest.Scope = [System.DirectoryServices.Protocols.SearchScope]::Base
	$securityMasks = [System.DirectoryServices.Protocols.SecurityMasks]'Owner' -bor [System.DirectoryServices.Protocols.SecurityMasks]'Group' -bor [System.DirectoryServices.Protocols.SecurityMasks]'Dacl' -bor [System.DirectoryServices.Protocols.SecurityMasks]'Sacl'
	$sdFlagLdapControl = New-Object System.DirectoryServices.Protocols.SecurityDescriptorFlagControl($securityMasks)
	[void]($ldapSearchRequest.Controls.Add($sdFlagLdapControl))
	[void]($ldapSearchRequest.Attributes.Add("distinguishedName"))
	[void]($ldapSearchRequest.Attributes.Add("sAMAccountName"))
	[void]($ldapSearchRequest.Attributes.Add("msDS-groupMSAMembership"))
	[void]($ldapSearchRequest.Attributes.Add("msDS-DelegatedMSAState"))
	[void]($ldapSearchRequest.Attributes.Add("msDS-ManagedAccountPrecededByLink"))
	[System.DirectoryServices.Protocols.SearchResponse]$ldapSearchResponse = $ldapConnection.SendRequest($ldapSearchRequest, $requestTimeout)
	Write-Host "Distinguished Name...: $($ldapSearchResponse.Entries.Attributes.'distinguishedname'[0])" -ForegroundColor Yellow
	Write-Host "Sam Account Name.....: $($ldapSearchResponse.Entries.Attributes.'samaccountname'[0])" -ForegroundColor Yellow
	If (-not [string]::IsNullOrEmpty($ldapSearchResponse.Entries.Attributes."msds-groupmsamembership")) {
		$adSecurity = New-Object System.DirectoryServices.ActiveDirectorySecurity
		$adSecurity.SetSecurityDescriptorBinaryForm($ldapSearchResponse.Entries.Attributes.'msds-groupmsamembership'[0])
		$adSecurity.Access.IdentityReference.Value | ForEach-Object {
			Write-Host "Pwd Allowed 2 Get By.: $($_)" -ForegroundColor Yellow
		}
	}
	Write-Host "dMSA State...........: $($ldapSearchResponse.Entries.Attributes.'msds-delegatedmsastate'[0])" -ForegroundColor Yellow
	If (-not [string]::IsNullOrEmpty($ldapSearchResponse.Entries.Attributes."msds-managedaccountprecededbylink")) {
		Write-Host "Linked Account DN....: $($ldapSearchResponse.Entries.Attributes.'msds-managedaccountprecededbylink'[0])" -ForegroundColor Yellow
	}
	Write-Host ""
}