Block-AADUser Playbook - Permissions error

Hello, I'm having some trouble implementing the "Block-AADUser Playbook" from the Microsoft Sentinel GitHub repo. I have already done the steps required: Assign Microsoft Sentinel Responder role t...

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soar

BillClarksonAntill

Sep 22, 2023

costaluisc

Check out the below

$MIGuid = "<Enter your managed identity guid here>"
$MI = Get-AzureADServicePrincipal -ObjectId $MIGuid

$GraphAppId = "00000003-0000-0000-c000-000000000000"
$PermissionName1 = "User.Read.All"
$PermissionName2 = "User.ReadWrite.All"
$PermissionName3 = "Directory.Read.All"
$PermissionName4 = "Directory.ReadWrite.All"

$GraphServicePrincipal = Get-AzureADServicePrincipal -Filter "appId eq '$GraphAppId'"
$AppRole1 = $GraphServicePrincipal.AppRoles | Where-Object {$_.Value -eq $PermissionName1 -and $_.AllowedMemberTypes -contains "Application"}
New-AzureAdServiceAppRoleAssignment -ObjectId $MI.ObjectId -PrincipalId $MI.ObjectId `
-ResourceId $GraphServicePrincipal.ObjectId -Id $AppRole1.Id

$AppRole2 = $GraphServicePrincipal.AppRoles | Where-Object {$_.Value -eq $PermissionName2 -and $_.AllowedMemberTypes -contains "Application"}
New-AzureAdServiceAppRoleAssignment -ObjectId $MI.ObjectId -PrincipalId $MI.ObjectId `
-ResourceId $GraphServicePrincipal.ObjectId -Id $AppRole2.Id

$AppRole3 = $GraphServicePrincipal.AppRoles | Where-Object {$_.Value -eq $PermissionName3 -and $_.AllowedMemberTypes -contains "Application"}
New-AzureAdServiceAppRoleAssignment -ObjectId $MI.ObjectId -PrincipalId $MI.ObjectId `
-ResourceId $GraphServicePrincipal.ObjectId -Id $AppRole3.Id

$AppRole4 = $GraphServicePrincipal.AppRoles | Where-Object {$_.Value -eq $PermissionName4 -and $_.AllowedMemberTypes -contains "Application"}
New-AzureAdServiceAppRoleAssignment -ObjectId $MI.ObjectId -PrincipalId $MI.ObjectId `
-ResourceId $GraphServicePrincipal.ObjectId -Id $AppRole4.Id

This code snippet can be found here

https://github.com/Azure/Azure-Sentinel/tree/master/Playbooks/Block-AADUserOrAdmin

costaluisc

Copper Contributor

Sep 21, 2023

Thanks for the help.
Can you give me so pointers on how to do that?
The Azure AD connector does not natively support managed identities.

BillClarksonAntill

Iron Contributor

Sep 22, 2023

costaluisc

Check out the below

$MIGuid = "<Enter your managed identity guid here>"
$MI = Get-AzureADServicePrincipal -ObjectId $MIGuid

$GraphAppId = "00000003-0000-0000-c000-000000000000"
$PermissionName1 = "User.Read.All"
$PermissionName2 = "User.ReadWrite.All"
$PermissionName3 = "Directory.Read.All"
$PermissionName4 = "Directory.ReadWrite.All"

$GraphServicePrincipal = Get-AzureADServicePrincipal -Filter "appId eq '$GraphAppId'"
$AppRole1 = $GraphServicePrincipal.AppRoles | Where-Object {$_.Value -eq $PermissionName1 -and $_.AllowedMemberTypes -contains "Application"}
New-AzureAdServiceAppRoleAssignment -ObjectId $MI.ObjectId -PrincipalId $MI.ObjectId `
-ResourceId $GraphServicePrincipal.ObjectId -Id $AppRole1.Id

$AppRole2 = $GraphServicePrincipal.AppRoles | Where-Object {$_.Value -eq $PermissionName2 -and $_.AllowedMemberTypes -contains "Application"}
New-AzureAdServiceAppRoleAssignment -ObjectId $MI.ObjectId -PrincipalId $MI.ObjectId `
-ResourceId $GraphServicePrincipal.ObjectId -Id $AppRole2.Id

$AppRole3 = $GraphServicePrincipal.AppRoles | Where-Object {$_.Value -eq $PermissionName3 -and $_.AllowedMemberTypes -contains "Application"}
New-AzureAdServiceAppRoleAssignment -ObjectId $MI.ObjectId -PrincipalId $MI.ObjectId `
-ResourceId $GraphServicePrincipal.ObjectId -Id $AppRole3.Id

$AppRole4 = $GraphServicePrincipal.AppRoles | Where-Object {$_.Value -eq $PermissionName4 -and $_.AllowedMemberTypes -contains "Application"}
New-AzureAdServiceAppRoleAssignment -ObjectId $MI.ObjectId -PrincipalId $MI.ObjectId `
-ResourceId $GraphServicePrincipal.ObjectId -Id $AppRole4.Id

This code snippet can be found here

https://github.com/Azure/Azure-Sentinel/tree/master/Playbooks/Block-AADUserOrAdmin

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Block-AADUser Playbook - Permissions error

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