Get recursive group membership of all AD users using Powershell - powershell

Question

I'm trying to make a PS script which would list all Active Directory user group membership (recursive).
I already have working script:
import-module activedirectory
$users = get-aduser -Filter {Name -Like "*"} -Searchbase "ou=Users, dc=Domain" | Where-Object { $_.Enabled -eq 'True' }
$targetFile = "D:\users.csv"
rm $targetFile
Add-Content $targetFile "User;Group"
foreach ($user in $users)
{
$groups = Get-ADPrincipalGroupMembership $user
foreach ($group in $groups)
{
$username = $user.samaccountname
$groupname = $group.name
$line = "$username;$groupname"
Add-Content $targetFile $line
}
}
But script doesn't list groups recursively, i.e., if group listed in the output file is part of another group.
Example:
Group1: User
Group2: Group3: User
Script shows only Group1 and 3 but not 2.
What should I add to the first script that it writes group membership recursively?

Answer 1

Sorry I am publishing an answer for a question from 3 years ago but if someone will see it, it can help.
Credit to:
How to get ALL AD user groups (recursively) with Powershell or other tools?
You can use the LDAP_MATCHING_RULE_IN_CHAIN:
Get-ADGroup -LDAPFilter "(member:1.2.840.113556.1.4.1941:=CN=User,CN=USers,DC=x)"
You can use it anywahere that you can use an LDAP filter.
Example:
$username = 'myUsername'
$dn = (Get-ADUser $username).DistinguishedName
Get-ADGroup -LDAPFilter ("(member:1.2.840.113556.1.4.1941:={0})" -f $dn) | select -expand Name | sort Name
Fix in your script:
import-module activedirectory
$users = get-aduser -Filter {Name -Like "*"} -Searchbase "ou=Users, dc=Domain" | Where-Object { $_.Enabled -eq 'True' }
$targetFile = "D:\users.csv"
rm $targetFile
Add-Content $targetFile "User;Group"
foreach ($user in $users)
{
$dn = $user.DistinguishedName
$groups = Get-ADGroup -LDAPFilter ("(member:1.2.840.113556.1.4.1941:={0})" -f $dn) | select -expand Name | sort Name
foreach ($group in $groups)
{
$username = $user.samaccountname
$groupname = $group.name
$line = "$username;$groupname"
Add-Content $targetFile $line
}
}

Answer 2

If you make it a function you can call it recursively. Check this out, I think you'll be pleased with the results:
Function Get-ADGroupsRecursive{
Param([String[]]$Groups)
Begin{
$Results = #()
}
Process{
ForEach($Group in $Groups){
$Results+=$Group
ForEach($Object in (Get-ADGroupMember $Group|?{$_.objectClass -eq "Group"})){
$Results += Get-ADGroupsRecursive $Object
}
}
}
End{
$Results | Select -Unique
}
}
Toss that at the top of your script, and then call it for each user. Something like:
import-module activedirectory
$users = get-aduser -Filter {Name -Like "*"} -Searchbase "ou=Users, dc=Domain" -Properties MemberOf | Where-Object { $_.Enabled -eq 'True' }
$targetFile = "D:\users.csv"
rm $targetFile
Add-Content $targetFile "User;Group"
foreach ($user in $users)
{
$Groups = $User.MemberOf
$Groups += $Groups | %{Get-ADGroupsRecursive $_}
$Groups | %{New-Object PSObject -Property #{User=$User;Group=$_}}|Export-CSV $targetfile -notype -append
}
Now, depending on the size of your AD structure that may take quite a while, but it will get you what you were looking for.

Answer 3

It is very easy. Just use ActiveRoles Management Shell for Active Directory. Cmdlet Get-QADMemberOf with parameter Indirect is the one you are looking for. Example:
Get-QADMemberOf john.smith -Indirect

Answer 4

The Quest object returned already include All Recursive groupes (and first level users) in properties $_.AllMembers
Add-PSSnapin Quest.ActiveRoles.ADManagement
$UsersFirstLevel = ($Members | Get-QADObject -Type Group -DontUseDefaultIncludedProperties | Get-QADGroupMember -DontUseDefaultIncludedProperties | ?{$_.type -eq 'user'})
$UsersSubGroup = ($Members | Get-QADObject -Type Group -DontUseDefaultIncludedProperties | Get-QADGroupMember -DontUseDefaultIncludedProperties | ?{$_.type -eq 'group'}).Allmembers | Get-QADObject -DontUseDefaultIncludedProperties | ?{$_.type -eq 'user'}
$RecursiveUsers = $UsersFirstLevel
$RecursiveUsers += $UsersSubGroup
$RecursiveUsers = $RecursiveUsers | Sort-Object -Unique

Answer 5

Newer versions of PowerShell (AD Module) do have -Recursive switch. So you can easily use Get-ADGroupMember.
Example: Get-ADGroupMember -Identity My_Group -Recursive