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Azure-AccessPermissions.ps1
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<#
.SYNOPSIS
Script to enumerate access permissions of a user's Azure Active Directory home tenant.
.NOTES
Author: 0xcsandker
Creation Date: 19.10.2022
.EXAMPLE
PS:> . .\Azure-AccessPermissions.ps1
PS:> Invoke-AccessCheckForCurrentUser
.EXAMPLE
PS:> . .\Azure-AccessPermissions.ps1
PS:> Invoke-AccessCheckForAllServicePrincipals
.EXAMPLE
PS:> . .\Azure-AccessPermissions.ps1
PS:> Invoke-AccessCheckForServicePrincipal -ServicePrincipalIdentifier 94fc9712-01e1-4115-ad4e-56a428e438b0
#>
#----------------------------------------------------------[Declarations]----------------------------------------------------------
# Script Version
$sScriptVersion = "0.2.2"
$banner=@"
_ _ ____ _ _
/ \ _____ _ _ __ ___ / \ ___ ___ ___ ___ ___| _ \ ___ _ __ _ __ ___ (_)___ ___(_) ___ _ __ ___
/ _ \ |_ / | | | '__/ _ \_____ / _ \ / __/ __/ _ \/ __/ __| |_) / _ \ '__| '_ ` _ \| / __/ __| |/ _ \| '_ \/ __|
/ ___ \ / /| |_| | | | __/_____/ ___ \ (_| (_| __/\__ \__ \ __/ __/ | | | | | | | \__ \__ \ | (_) | | | \__ \
/_/ \_\/___|\__,_|_| \___| /_/ \_\___\___\___||___/___/_| \___|_| |_| |_| |_|_|___/___/_|\___/|_| |_|___/
v$sScriptVersion by @0xcsandker
Here are the functions you might wanna use:
Invoke-AccessCheckForServicePrincipal ## Specific Service Principals
Invoke-AccessCheckForAllServicePrincipals ## All Service Principals
Invoke-AccessCheckForGroup ## Specific Group
Invoke-AccessCheckForAllGroups ## All Groups
Invoke-AccessCheckForUser ## Specifc User
Invoke-AccessCheckForAllUsers ## All Users
Invoke-AccessCheckForCurrentUser ## Your current User
Invoke-AllAccessChecks ## All of the above
Enumerate-AllHighPrivilegePrincipals ## Find all high privileged principals
Enumerate-MFAStatusOfHighPrivilegePrincipals ## Check the MFA Status of all high privileged principals
"@
$wellKnownApplicationIDs = @{
## NOTE: THIS is not a complete list, but rather an add-on-the-go-list
### I don't want this script to be too bloated
"00000002-0000-0ff1-ce00-000000000000" = "Exchange Online";
"00000003-0000-0ff1-ce00-000000000000" = "SharePoint Online";
"00000004-0000-0ff1-ce00-000000000000" = "Skype for Business online";
"0000000a-0000-0000-c000-000000000000" = "DeviceManagementApp (Microsoft Intune)";
"1b730954-1685-4b74-9bfd-dac224a7b894" = "MS Graph API";
"a0c73c16-a7e3-4564-9a95-2bdf47383716" = "MS Exchange Remote PowerShell";
"1fec8e78-bce4-4aaf-ab1b-5451cc387264" = "MS Teams";
"d3590ed6-52b3-4102-aeff-aad2292ab01c" = "Microsoft Support and Recovery Assistant (SARA)";
"ab9b8c07-8f02-4f72-87fa-80105867a763" = "OneDrive Sync Engine";
"de0853a1-ab20-47bd-990b-71ad5077ac7b" = "Windows Configuration Designer (WCD)";
"d4ebce55-015a-49b5-a083-c84d1797ae8c" = "Microsoft Intune Enrollment"
}
#-----------------------------------------------------------[Functions]------------------------------------------------------------
$MESSAGE_SUCCESS = '0'
$MESSAGE_FAIL = '1'
$MESSAGE_WARNING = '2'
$MESSAGE_INFO = '3'
Function __AAP-Log {
PARAM(
[String]
$Msg = '',
[String]
$MsgType = '',
[Int]
$IndentationLevel = 0,
[Switch]
$NoNewLine = $false
)
Process {
$initalFC = $host.UI.RawUI.ForegroundColor
switch ( $MsgType )
{
$MESSAGE_SUCCESS {
$host.UI.RawUI.ForegroundColor = "Green"
Write-Host "$(' '*$IndentationLevel)$($Msg)" -NoNewline:$NoNewLine
$host.UI.RawUI.ForegroundColor = $initalFC
break
}
$MESSAGE_FAIL {
$host.UI.RawUI.ForegroundColor = "Red"
Write-Host "$(' '*$IndentationLevel)$($Msg)" -NoNewline:$NoNewLine
$host.UI.RawUI.ForegroundColor = $initalFC
break
}
$MESSAGE_WARNING {
$host.UI.RawUI.ForegroundColor = "Yellow"
Write-Host "$(' '*$IndentationLevel)$($Msg)" -NoNewline:$NoNewLine
$host.UI.RawUI.ForegroundColor = $initalFC
break
}
$MESSAGE_INFO {
$host.UI.RawUI.ForegroundColor = "Cyan"
Write-Host "$(' '*$IndentationLevel)$($Msg)" -NoNewline:$NoNewLine
$host.UI.RawUI.ForegroundColor = $initalFC
break
}
default {
$host.UI.RawUI.ForegroundColor = "DarkGray"
Write-Host "$(' '*$IndentationLevel)$($Msg)" -NoNewline:$NoNewLine
$host.UI.RawUI.ForegroundColor = $initalFC
break
}
}
if( $Outfile ){
$script:gOutFileMessageBuffer += $Msg
If(-Not $NoNewLine) {
"$(' '*$IndentationLevel)$($script:gOutFileMessageBuffer)" | Out-File -Append -FilePath $Outfile
$script:gOutFileMessageBuffer = ""
}
}
}
}
Function __APP-DateTimeToString {
PARAM(
[Parameter()]
[DateTime]
$DateTime
)
Process {
If( $DateTime.getType() -eq [DateTime] ){
return $DateTime.GetDateTimeFormats('D')[-1]
}Else {
return $DateTime
}
}
}
Function __AAP-AppRoleIsHighPrivilegeConfidenceGuess {
PARAM(
[Object]
$AppRoleObject
)
Process {
##
## confidence level
## 0 => Assumed Not high privilege
## >0 => Assumed high privilege
## 100 => Certainly high privilege
$confidenceLevel = 0
If( $AppRoleObject.Value ){
If( $AppRoleObject.Value -eq 'Directory.ReadWrite.All' ){
$confidenceLevel = 100
}
ElseIf( $AppRoleObject.Value -Like '*FullControl.All' ){
$confidenceLevel = 10
}
ElseIf( $AppRoleObject.Value -Like '*ReadWrite.All' ){
$confidenceLevel = 10
}
ElseIf( $AppRoleObject.Value -Like 'full_access*' ){
$confidenceLevel = 10
}
}
## Return condifence level
return $confidenceLevel
}
}
Function __AAP-DisplayAppRoleAssignments {
PARAM(
[Object[]]
$AppRoleAssignments,
[Int]
$IndentationLevel = 0
)
Process {
ForEach($appRoleAssignment in $AppRoleAssignments){
$appRoleValue = 'default'
$appRole = $null
$highPrivConfidenceLevel = $null
If( $appRoleAssignment.AppRoleId -ne '00000000-0000-0000-0000-000000000000' ){
$appRole = ((Get-MgServicePrincipal -ServicePrincipalId $appRoleAssignment.ResourceId).AppRoles | ? {$_.Id -eq $appRoleAssignment.AppRoleId} | Select-Object -First 1)
$appRoleValue = $appRole.Value
If( $appRole ){
$highPrivConfidenceLevel =__AAP-AppRoleIsHighPrivilegeConfidenceGuess -AppRoleObject $appRole
}
}
__AAP-Log " Resource: $($appRoleAssignment.ResourceDisplayName) ($($appRoleAssignment.ResourceId))" -MsgType $MESSAGE_INFO -IndentationLevel $RecursionCounterDoNotUse
__AAP-Log " AppRole ID: $($appRoleAssignment.AppRoleId)" -MsgType $MESSAGE_INFO -IndentationLevel $RecursionCounterDoNotUse
If( $highPrivConfidenceLevel ){
__AAP-Log " AppRole ([!] Might be high privileged. Confidence $($highPrivConfidenceLevel)/100): " -MsgType $MESSAGE_WARNING -IndentationLevel $RecursionCounterDoNotUse
} Else {
__AAP-Log " AppRole:" -MsgType $MESSAGE_INFO -IndentationLevel $RecursionCounterDoNotUse
}
__AAP-Log " Value: $($appRoleValue)" -MsgType $MESSAGE_INFO -IndentationLevel $RecursionCounterDoNotUse
__AAP-Log " Display Name: $($appRole.DisplayName)" -MsgType $MESSAGE_INFO -IndentationLevel $RecursionCounterDoNotUse
__AAP-Log " AllowedMemberTypes: $($appRole.AllowedMemberTypes)" -MsgType $MESSAGE_INFO -IndentationLevel $RecursionCounterDoNotUse
__AAP-Log " Enabled: $($appRole.IsEnabled)" -MsgType $MESSAGE_INFO -IndentationLevel $RecursionCounterDoNotUse
__AAP-Log ""
#__AAP-Log " $($appRoleAssignmend.PrincipalType): $($appRoleAssignmend.PrincipalDisplayName) ($($appRoleAssignmend.PrincipalId))"
}
}
}
Function __AAP-DisplayOauth2PermissionGrants {
PARAM(
[Object[]]$Oauth2PermissionGrants
)
Process {
ForEach($Oauth2PermissionGrant in $Oauth2PermissionGrants){
$principal = If($Oauth2PermissionGrant.PrincipalId) {(Get-MgDirectoryObjectById -Ids $Oauth2PermissionGrant.PrincipalId).AdditionalProperties.userPrincipalName} Else { "" }
$resource = If($Oauth2PermissionGrant.ResourceId) {(Get-MgDirectoryObjectById -Ids $Oauth2PermissionGrant.ResourceId).AdditionalProperties.displayName} Else {""}
$client = If($Oauth2PermissionGrant.ClientId) {(Get-MgDirectoryObjectById -Ids $Oauth2PermissionGrant.ClientId).AdditionalProperties.displayName} Else {""}
__AAP-Log " Resource: $($resource) ($($Oauth2PermissionGrant.ResourceId))" -MsgType $MESSAGE_INFO
__AAP-Log " Consent To: $($Oauth2PermissionGrant.ConsentType)" -MsgType $MESSAGE_INFO
__AAP-Log " Principal: $($principal) ($($Oauth2PermissionGrant.PrincipalId))" -MsgType $MESSAGE_INFO
__AAP-Log " Scope: $($Oauth2PermissionGrant.Scope)" -MsgType $MESSAGE_INFO
__AAP-Log " Client: $($client) ($($Oauth2PermissionGrant.ClientId))" -MsgType $MESSAGE_INFO
__AAP-Log " Additional Attributes:" -MsgType $MESSAGE_INFO
$Oauth2PermissionGrant.AdditionalProperties.Keys.ForEach{" $($_): $($Oauth2PermissionGrant.AdditionalProperties[$_])"}
__AAP-Log ""
}
}
}
Function __AAP-GetHighPrivilegedDirectoryRoleTemplateMap {
PARAM()
Process {
return @{
'62E90394-69F5-4237-9190-012177145E10' = 'Global administrator';
'9B895D92-2CD3-44C7-9D02-A6AC2D5EA5C3' = 'Application administrator';
'C4E39BD9-1100-46D3-8C65-FB160DA0071F' = 'Authentication Administrator';
'B0F54661-2D74-4C50-AFA3-1EC803F12EFE' = 'Billing administrator';
'158C047A-C907-4556-B7EF-446551A6B5F7' = 'Cloud application administrator';
'B1BE1C3E-B65D-4F19-8427-F6FA0D97FEB9' = 'Conditional Access administrator';
'29232CDF-9323-42FD-ADE2-1D097AF3E4DE' = 'Exchange administrator';
'729827E3-9C14-49F7-BB1B-9608F156BBB8' = 'Helpdesk administrator';
'966707D0-3269-4727-9BE2-8C3A10F19B9D' = 'Password administrator';
'7BE44C8A-ADAF-4E2A-84D6-AB2649E08A13' = 'Privileged authentication administrator';
'E8611AB8-C189-46E8-94E1-60213AB1F814' = 'Privileged Role Administrator';
'194AE4CB-B126-40B2-BD5B-6091B380977D' = 'Security administrator';
'F28A1F50-F6E7-4571-818B-6A12F2AF6B6C' = 'SharePoint administrator';
'FE930BE7-5E62-47DB-91AF-98C3A49A38B1' = 'User administrator';
'3A2C62DB-5318-420D-8D74-23AFFEE5D9D5' = 'Intune Administrator';
'9F06204D-73C1-4D4C-880A-6EDB90606FD8' = 'Azure AD Joined Device Local Administrator';
## 'F2EF992C-3AFB-46B9-B7CF-A126EE74C451' = 'Global Reader';
}
}
}
Function __AAP-DisplayDirectoryRoleAssignment {
PARAM(
[Object]$MgDirectoryRole
)
Begin {
#$mgAllDirectoryRoles = Get-MgDirectoryRole -All
$highPrivilegedDirectoryRoles = __AAP-GetHighPrivilegedDirectoryRoleTemplateMap
}
Process {
## Azure AD Builtin Roles are described here: https://learn.microsoft.com/en-us/azure/active-directory/roles/permissions-reference
If( $MgDirectoryRole.RoleTemplateId.toUpper() -In $highPrivilegedDirectoryRoles.Keys ){
__AAP-Log " DirectoryRole: $($MgDirectoryRole.DisplayName) ([!] High privileged)" -MsgType $MESSAGE_WARNING
__AAP-Log " $($MgDirectoryRole.Description)"
}
Else {
__AAP-Log " DirectoryRole: $($MgDirectoryRole.DisplayName) (RoleTemplate ID: $($MgDirectoryRole.RoleTemplateId))" -MsgType $MESSAGE_INFO
__AAP-Log " $($MgDirectoryRole.Description)"
}
}
}
Function __AAP-DisplayHighPrivilegePrincipalMap {
PARAM()
Process {
__AAP-Log "## High Privileged Principals "
__AAP-Log "[*] Number of high privileged Accounts: $($script:gHighPrivilegdPrincipalMap.Keys.Count)" -MsgType $MESSAGE_WARNING
ForEach($principalID in $script:gHighPrivilegdPrincipalMap.Keys){
$principalEntries = $script:gHighPrivilegdPrincipalMap[$principalID]
$firstEntry = $principalEntries[0]
$absoluteConfidenceEntries = $principalEntries | ? { $_['ConfidenceLevel'] -eq 100 }
__AAP-Log "[+] $($firstEntry['principalName']) ($($firstEntry['principalID'])) [Type: $($firstEntry['principalType'])]" -MsgType $MESSAGE_SUCCESS
## If there is an entry with 100 confidence display only these entries
If( $absoluteConfidenceEntries ){
ForEach($absoluteConfidenceEntry in $absoluteConfidenceEntries){
__AAP-Log " Reason: $($absoluteConfidenceEntry['Reason']) (Confidence: $($absoluteConfidenceEntry['ConfidenceLevel'])/100)" -MsgType $MESSAGE_INFO
}
}
## Otherwise display all entries
Else {
ForEach($principalEntry in $principalEntries){
__AAP-Log " Reason: $($principalEntry['Reason']) (Confidence: $($principalEntry['ConfidenceLevel'])/100)" -MsgType $MESSAGE_INFO
}
}
}
}
}
Function __AAP-ResolveDirectoryObjectByID {
PARAM(
[String]
$ObjectID
)
Process {
$returnValue = "$($ObjectID)"
$directoryObject = Get-MgDirectoryObjectById -Ids $ObjectID -ErrorAction SilentlyContinue
If($directoryObject){
$aadDirectoryObjType = $directoryObject.AdditionalProperties['@odata.type']
Switch($aadDirectoryObjType){
'#microsoft.graph.user' {
$returnValue = "$($directoryObject.AdditionalProperties['userPrincipalName']) (User) [ID: $($ObjectID)]"
Break
}
'#microsoft.graph.group' {
$returnValue = "$($directoryObject.AdditionalProperties['displayName']) (Group) [ID: $($ObjectID)]"
Break
}
'#microsoft.graph.servicePrincipal' {
$returnValue = "$($directoryObject.AdditionalProperties['appDisplayName']) (ServicePrincipal) [ID: $($ObjectID)]"
Break
}
}
}
Else {
## Check if well known Application
If( $wellKnownApplicationIDs.Keys -Contains $ObjectID ){
$returnValue = "$($wellKnownApplicationIDs[$ObjectID]) (Application) [ID: $($ObjectID)]"
}
}
return $returnValue
}
}
Function __AAP-DisplayApplicableMFAConditionalAccessPolicyForUserID {
PARAM(
[Parameter()]
[String]
$UserID,
[Int]
$IndentationLevel = 0
)
Begin {
If( -Not $script:gActiveMFAConditionalAccessPolicies ){
$script:gActiveMFAConditionalAccessPolicies = Get-MgIdentityConditionalAccessPolicy -All | ?{ $_.State -ne "disabled" -And $_.GrantControls.BuiltInControls -Contains "mfa" }
}
}
Process {
$usersGroups = Get-MgUserMemberOf -UserId $UserID -All
$applicablePoliciesCount = 0
ForEach($conditionalAccessPolicy in $script:gActiveMFAConditionalAccessPolicies){
$policyApplies = $false
## Check Excludes
### Excluded by Group
If($conditionalAccessPolicy.Conditions.users.ExcludeGroups | ?{ $usersGroups.Id -Contains "$_" } ){
## Write-Verbose "[*] Group Policy exlcuded by group membership: $($conditionalAccessPolicy.DisplayName)"
Continue
}
### Excluded by User
If($conditionalAccessPolicy.Conditions.users.ExcludeUsers -Contains $UserID ) {
## Write-Verbose "[*] Group Policy exlcuded by group user: $($conditionalAccessPolicy.DisplayName)"
Continue
}
### Excluded by Role
If($conditionalAccessPolicy.Conditions.users.ExcludeRoles) {
$excludedRoles = $conditionalAccessPolicy.Conditions.Users.ExcludeRoles
ForEach($excludedRole in $excludedRoles){
If( ( Get-MgRoleManagementDirectoryRoleAssignment -Filter "(RoleDefinitionId eq '$($excludedRole)') and (PrincipalId eq '$($UserID)')") ){
#Write-Verbose "[*] Group Policy exlcuded by group role: $($conditionalAccessPolicy.DisplayName)"
Continue
}
}
}
## Check Includes
### Inclue by Group
If($conditionalAccessPolicy.Conditions.users.IncludeGroups | ?{ $usersGroups.Id -Contains "$_" } ){
#Write-Verbose "[+] Group Policy applies by Group: $($conditionalAccessPolicy.DisplayName)" -ForegroundColor DarkGreen
$policyApplies = $true
}
### Excluse by User
If(
( $conditionalAccessPolicy.Conditions.users.IncludeUsers -Contains "All") -Or
( $conditionalAccessPolicy.Conditions.users.IncludeUsers -Contains $UserID )
){
#Write-Verbose "[+] Group Policy applies by User: $($conditionalAccessPolicy.DisplayName)" -ForegroundColor DarkGreen
$policyApplies = $true
}
### Excluse by Role
If($conditionalAccessPolicy.Conditions.users.IncludeRoles) {
$includeRoles = $conditionalAccessPolicy.Conditions.Users.IncludeRoles
ForEach($includeRole in $includeRoles){
If( ( Get-MgRoleManagementDirectoryRoleAssignment -Filter "(RoleDefinitionId eq '$($includeRole)') and (PrincipalId eq '$($UserID)')") ){
#Write-Verbose "[+] Group Policy applies by group role: $($conditionalAccessPolicy.DisplayName)" -ForegroundColor DarkGreen
$policyApplies = $true
}
}
}
If($policyApplies){
$applicablePoliciesCount += 1
__AAP-Log "[+] $($conditionalAccessPolicy.DisplayName)" -MsgType $MESSAGE_SUCCESS -IndentationLevel $IndentationLevel
## Grant Controls
If( $conditionalAccessPolicy.GrantControls.BuiltInControls -eq "block" ){
## It should not be possible to set controls to "block" AND "mfa"
### Therefore this is just a saftey net
__AAP-Log "==> Block access" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
} ElseIf ($conditionalAccessPolicy.GrantControls.BuiltInControls.Count) {
__AAP-Log "==> Grant access " -NoNewline -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
If( $conditionalAccessPolicy.GrantControls.BuiltInControls.Count ){
__AAP-Log "IF [ " -NoNewline -MsgType $MESSAGE_INFO
ForEach($bultInControl in $conditionalAccessPolicy.GrantControls.BuiltInControls){
If( ($conditionalAccessPolicy.GrantControls.BuiltInControls.IndexOf($bultInControl) % 2) -ne 0 ){
__AAP-Log "$($conditionalAccessPolicy.GrantControls.Operator) " -NoNewline -MsgType $MESSAGE_INFO
}
__AAP-Log "$($bultInControl) " -NoNewline -MsgType $MESSAGE_INFO
}
__AAP-Log "]" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
} Else {
__AAP-Log "" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel ## newline
}
}
## Session Controls
If( $conditionalAccessPolicy.SessionControls.ApplicationEnforcedRestrictions.IsEnabled ){
__AAP-Log "--> Session Control: Use app enforced restrictions" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.SessionControls.CloudAppSecurity.IsEnabled ){
__AAP-Log "--> Session Control: CloudAppSecurity (Type: $($conditionalAccessPolicy.SessionControls.CloudAppSecurity.CloudAppSecurityType))" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.SessionControls.ContinuousAccessEvaluation.Mode ){
__AAP-Log "--> Session Control: Customize continuous access evaluation (Mode: $($conditionalAccessPolicy.SessionControls.ContinuousAccessEvaluation.Mode))" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.SessionControls.DisableResilienceDefaults ){
__AAP-Log "--> Session Control: Disable resilience defaults" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.SessionControls.PersistentBrowser.IsEnabled ){
__AAP-Log "--> Session Control: Persistent browser session" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.SessionControls.SignInFrequency.IsEnabled ){
__AAP-Log "--> Session Control: Sign-in frequency" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
__AAP-Log " $($conditionalAccessPolicy.SessionControls.SignInFrequency.Value) $($conditionalAccessPolicy.SessionControls.SignInFrequency.Type) ($($conditionalAccessPolicy.SessionControls.SignInFrequency.FrequencyInterval))" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
## Applications
ForEach($excludedApplication in $conditionalAccessPolicy.Conditions.Applications.ExcludeApplications){
## Values could be "All", "<AppName>", "<ID>"
$excludedApp = __AAP-ResolveDirectoryObjectByID $excludedApplication
__AAP-Log " Excluded Application: $($excludedApp)" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
ForEach($includedApplication in $conditionalAccessPolicy.Conditions.Applications.IncludeApplications){
## Values could be "All", "<AppName>", "<ID>"
$includeApp = __AAP-ResolveDirectoryObjectByID $includedApplication
__AAP-Log " Included Application: $($includeApp)" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.Conditions.Applications.IncludeAuthenticationContextClassReferences ){
__AAP-Log "TODO IncludeAuthenticationContextClassReferences: $($conditionalAccessPolicy.Conditions.Applications.IncludeAuthenticationContextClassReferences )" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.Conditions.Applications.IncludeUserActions ){
__AAP-Log "TODO IncludeUserActions: $($conditionalAccessPolicy.Conditions.Applications.IncludeUserActions )" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.Conditions.Applications.AdditionalProperties.Count ){
__AAP-Log "TODO AdditionalProperties: $($conditionalAccessPolicy.Conditions.Applications.AdditionalProperties | fl )" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
## ClientApps
__AAP-Log " Client Apps: " -NoNewline -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
ForEach($clientApp in $conditionalAccessPolicy.Conditions.ClientAppTypes){
If( ($conditionalAccessPolicy.Conditions.ClientAppTypes.IndexOf($clientApp) % 2) -ne 0 ){
__AAP-Log ", " -NoNewline -MsgType $MESSAGE_INFO
}
__AAP-Log "$($clientApp)" -NoNewline -MsgType $MESSAGE_INFO
}
__AAP-Log "" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel ## new line
## Devices
If( $conditionalAccessPolicy.Conditions.Devices.ExcludeDeviceStates ){
__AAP-Log " Excluded Device States: $($conditionalAccessPolicy.Conditions.Devices.ExcludeDeviceState)" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.Conditions.Devices.ExcludeDevices ){
__AAP-Log " Excluded Devices: $($conditionalAccessPolicy.Conditions.Devices.ExcludeDevices)" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.Conditions.Devices.IncludeDeviceStates ){
__AAP-Log " Included Device States: $($conditionalAccessPolicy.Conditions.Devices.IncludeDeviceStates)" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.Conditions.Devices.IncludeDevices ){
__AAP-Log " Included Devices: $($conditionalAccessPolicy.Conditions.Devices.IncludeDevices)" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
## Locations
If( $conditionalAccessPolicy.Conditions.Locations.ExcludeLocations ){
__AAP-Log " Excluded Locations: $($conditionalAccessPolicy.Conditions.Locations.ExcludeLocations)" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.Conditions.Locations.IncludeLocations ){
__AAP-Log " Included Locations: $($conditionalAccessPolicy.Conditions.Locations.IncludeLocations)" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
## Plattforms
If( $conditionalAccessPolicy.Conditions.Platforms.ExcludePlatforms ){
__AAP-Log " Excluded Plattforms: $($conditionalAccessPolicy.Conditions.Platforms.ExcludeLocations)" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
If( $conditionalAccessPolicy.Conditions.Platforms.IncludePlatforms ){
__AAP-Log " Included Plattforms: $($conditionalAccessPolicy.Conditions.Platforms.IncludePlatforms)" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
## ServicePrincipalRiskLevels
If( $conditionalAccessPolicy.Conditions.ServicePrincipalRiskLevels.Count ){
__AAP-Log " TODO: ServicePrincipalRiskLevels" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
## SignInRiskLevels
If( $conditionalAccessPolicy.Conditions.SignInRiskLevels.Count ){
__AAP-Log " TODO: SignInRiskLevels" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
## UserRiskLevels
If( $conditionalAccessPolicy.Conditions.UserRiskLevels.Count ){
__AAP-Log " TODO: UserRiskLevels" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
}
#Write-Host "[+] Group Policy applies ??? last call : $($conditionalAccessPolicy.DisplayName)" -ForegroundColor DarkGreen
}
If( $applicablePoliciesCount -eq 0 ){
## No policy applies
__AAP-Log " -- No MFA Conditional Access Policy applies for this user --" -MsgType $MESSAGE_INFO -IndentationLevel $IndentationLevel
}
}
}
Function __AAP-CheckRequiredModules {
PARAM()
Process {
$modulesInstalled = $true
## Microsoft.Graph
if ( -Not (Get-Module -ListAvailable -Name Microsoft.Graph) ){
__AAP-Log -Msg "[-] Module 'Microsoft.Graph' does not exist." -MsgType $MESSAGE_FAIL
__AAP-Log -Msg " Install it via: Install-Module Microsoft.Graph" -MsgType $MESSAGE_WARNING
$modulesInstalled = $false
}
## AADInternals
if ( -Not (Get-Module -ListAvailable -Name AADInternals) ) {
__AAP-Log -Msg "[-] Module 'AADInternals' does not exist." -MsgType $MESSAGE_FAIL
__AAP-Log -Msg " Install it via: Install-Module AADInternals" -MsgType $MESSAGE_WARNING
$modulesInstalled = $false
}
## AzureADPreview
if ( -Not (Get-Module -ListAvailable -Name AzureADPreview) ) {
__AAP-Log -Msg "[-] Module 'AzureADPreview' does not exist." -MsgType $MESSAGE_FAIL
__AAP-Log -Msg " Install it via: Install-Module AzureADPreview" -MsgType $MESSAGE_WARNING
$modulesInstalled = $false
}
return $modulesInstalled
}
}
Function __AAP-ImportRequiredModules {
PARAM()
Process {
Try {
Import-Module AADInternals 6>$null | Out-Null
Import-Module Microsoft.Graph.Applications | Out-Null
Import-Module AzureADPreview | Out-Null
return $true
}
Catch {
__AAP-Log -Msg "[-] An error occured while trying to import required modules." -MsgType $MESSAGE_FAIL
__AAP-Log -Msg " The error was: $_"
return $false
}
}
}
Function __AAP-GetAcessTokenForAADGraphWithRefreshToken {
PARAM(
[Parameter()]
[String]
$RefreshToken = $global:__AAPgRefreshToken,
[Parameter()]
[String]
$Tenant = $global:__AAPgTenantID
)
Process {
return (Get-AADIntAccessTokenWithRefreshToken -Resource "https://graph.windows.net" -ClientId "1b730954-1685-4b74-9bfd-dac224a7b894" -RefreshToken $RefreshToken -Tenant $global:__AAPgTenantID)
}
}
Function __AAP-GetAcessTokenForMSGraphWithRefreshToken {
PARAM(
[Parameter()]
[String]
$RefreshToken = $global:__AAPgRefreshToken,
[Parameter()]
[String]
$Tenant = $global:__AAPgTenantID
)
Process {
return (Get-AADIntAccessTokenWithRefreshToken -Resource "https://graph.microsoft.com" -ClientId "1b730954-1685-4b74-9bfd-dac224a7b894" -RefreshToken $RefreshToken -Tenant $global:__AAPgTenantID)
}
}
Function __AAP-GetAcessTokenForMSGraphWithCredentials {
PARAM(
[Parameter()]
[String]
$Tenant = $global:__AAPgTenantID
)
Process {
$accessTokenMSGraph, $refreshToken = Get-AADIntAccessToken -Resource "https://graph.microsoft.com" -ClientId "1b730954-1685-4b74-9bfd-dac224a7b894" -IncludeRefreshToken:$true -Tenant $Tenant
return @($accessTokenMSGraph, $refreshToken)
}
}
Function __AAP-ConnectMicrosoftGraph {
PARAM(
[Parameter()]
[String]
$Tenant
)
Begin {
## Tenant dependent Script global variables
$script:gAllMgDirectoryRoles = @()
$script:gHighPrivilegdPrincipalMap = @{}
$script:gLastCollectionOfHighPrivilegdPrincipalMap = $null
}
Process{
$global:__AAPgAccessTokenMSGraph, $global:__AAPgRefreshToken = __AAP-GetAcessTokenForMSGraphWithCredentials -Tenant $Tenant
If( $global:__AAPgAccessTokenMSGraph ){
Connect-MgGraph -AccessToken $global:__AAPgAccessTokenMSGraph
Select-MgProfile -Name "beta"
$global:__AAPgTenantID = (Get-MgContext).TenantId
}
Else {
__AAP-Log -Msg "[-] An error occured while trying to connect to Micrsoft Graph." -MsgType $MESSAGE_FAIL
__AAP-Log -Msg " We can't continue. Please retry..."
Break
}
return $accessTokenMSGraph
}
}
Function __AAP-ConnectAllResources {
PARAM(
[Parameter()]
[String]
$Tenant
)
Process {
__AAP-Log "[*] Connecting to Microsoft Graph..."
$accessTokenMSGraph = __AAP-ConnectMicrosoftGraph -Tenant $Tenant
__AAP-Log "[*] Connecting to AzureAD Graph..."
$graphContext = Get-MgContext
Connect-AzureAD -AccountId $graphContext.Account | Out-Null
}
}
Function __AAP-ConnectIfNecessary {
PARAM(
[Parameter()]
[String]
$Tenant
)
Process {
## Check if given Tenant matches
If( $Tenant -And ( $global:__AAPgTenantID -ne (Get-AADIntTenantID -Domain $Tenant) ) ){
__AAP-Log "[*] Connecting Microsoft Graph to different Tenant..."
__AAP-ConnectAllResources -Tenant $Tenant
}
## Check if connected
If( -Not (Get-MgContext) ){
__AAP-ConnectAllResources -Tenant $Tenant
}
## Test connection
Try {
$mgUser = Get-MgUser -Top 1 -ErrorAction Stop
} Catch {
$caughtError = $_
If( $caughtError.ToString() -Like "*Authentication needed*" ){
__AAP-Log -Msg "[*] We need to re-authenticate..." -MsgType $MESSAGE_WARNING
__AAP-ConnectAllResources -Tenant $Tenant
}
If( $caughtError.ToString() -Like "*token has expired*" ){
__AAP-Log -Msg "[*] Access Token expired we need to re-authenticate..." -MsgType $MESSAGE_WARNING
__AAP-ConnectAllResources -Tenant $Tenant
}
}
}
}
Function __AAP-AddToHighPrivilegePrincipalMap {
PARAM(
[Parameter(Mandatory)]
[String]
$PrincipalID,
[String]
$PrincipalName,
[String]
$Reason,
[Parameter(Mandatory)]
[ValidateSet("User","Group","ServicePrincipal","Unknown", IgnoreCase = $true)]
[String]
$PrincipalType,
[Int]
$ConfidenceLevel = -1
)
Process {
$entryArray = If( $script:gHighPrivilegdPrincipalMap.Keys -Contains $PrincipalID ){ ,$script:gHighPrivilegdPrincipalMap.Item($PrincipalID) } Else { ,@() }
## Update Entries with a reason already added
$updateEntries = $entryArray | ? { $_['Reason'] -eq $Reason }
If( $updateEntries ){
ForEach($updateEntry in $updateEntries){
## Update only if the confidence level increased
If( $ConfidenceLevel -gt $updateEntry['ConfidenceLevel'] ){
$updateEntry['ConfidenceLevel'] = $ConfidenceLevel
}
}
}
## Add new entry if new reason
Else {
$entryArray += @{
'principalID' = $PrincipalID;
'principalName' = $PrincipalName;
'principalType' = $PrincipalType;
'ConfidenceLevel' = $ConfidenceLevel;
'Reason' = $Reason
}
$script:gHighPrivilegdPrincipalMap[$PrincipalID] = $entryArray
}
}
}
Function __AAP-DisplayNonHighPrivilegedRoleAssignments {
PARAM(
[Parameter()]
[hashtable]
$NonHighPrivilegedRoleAssignments
)
Process {
ForEach($roleTemplateName in $NonHighPrivilegedRoleAssignments.Keys){
__AAP-Log "[*] The Directory Role '$($roleTemplateName)' is currently not considered high privileged, but has the following members:" -MsgType $MESSAGE_WARNING
ForEach($principalDisplayStr in $NonHighPrivilegedRoleAssignments[$roleTemplateName]){
__AAP-Log " $($principalDisplayStr)"
}
}
}
}
Function __AAP-CheckIfMemberOfPrivilegedDirectoryRole {
PARAM(
[Parameter()]
[String]
$PrincipalID,
[Parameter()]
[hashtable]
$NonHighPrivilegedRoleAssignments,
[Parameter()]
[String]
$TemplateID,
[Parameter()]
[String]
$TemplateName = "",
[Parameter()]
[Switch]
$AssignedViaPIM = $false,
[Parameter()]
[Object]
$PIMAssignmentEndDateTime,
[Parameter()]
[String]
$PIMAssignmentState
)
Begin {
If( $TemplateName -eq "" ){
$mgDirectoryRoleTemplate = Get-MgDirectoryRoleTemplate -DirectoryRoleTemplateId $TemplateID
If( $mgDirectoryRoleTemplate ){
$TemplateName = $mgDirectoryRoleTemplate.DisplayName
}
}
}
Process {
### Check if role is high privileged
If( $templateID -In $highPrivilegedDirectoryRoleTemplatesMap.Keys ){
## 100 for Global Administrator, 99 for all others
$confidenceLevel = If( $templateID -eq '62E90394-69F5-4237-9190-012177145E10' ){ 100 } Else { 99 }
## Get corresponding principal
$principalObjectData = (Get-MgDirectoryObjectById -Ids $PrincipalID)
$principalID = $principalObjectData.Id
$principalName = $null
$principalType = 'Unknown'
$highPrivReason = "High privileged directory Role assigned: $($highPrivilegedDirectoryRoleTemplatesMap[$templateID])"
If( $AssignedViaPIM ){
If( $PIMAssignmentEndDateTime ){
$endDateStr = __APP-DateTimeToString -DateTime $PIMAssignmentEndDateTime
$highPrivReason = "High privileged directory Role assigned (via time-based PIM assignment, ending $($endDateStr)): $($highPrivilegedDirectoryRoleTemplatesMap[$templateID])"
If( $PIMAssignmentState ){
$highPrivReason = "High privileged directory Role assigned (via $($PIMAssignmentState) time-based PIM assignment, ending $($endDateStr)): $($highPrivilegedDirectoryRoleTemplatesMap[$templateID])"
}
}
Else {
$highPrivReason = "High privileged directory Role assigned (via permanent PIM assignment): $($highPrivilegedDirectoryRoleTemplatesMap[$templateID])"
If( $PIMAssignmentState ){
$highPrivReason = "High privileged directory Role assigned (via $($PIMAssignmentState) permanent PIM assignment): $($highPrivilegedDirectoryRoleTemplatesMap[$templateID])"
}
}
}
If( $principalObjectData.AdditionalProperties ){
## Resolve principal
$aadDirectoryObjType = $principalObjectData.AdditionalProperties['@odata.type']
Switch($aadDirectoryObjType){
'#microsoft.graph.user' {
$principalType = 'User'
$principalName = $principalObjectData.AdditionalProperties['userPrincipalName']
## Add entry
__AAP-AddToHighPrivilegePrincipalMap -PrincipalID $principalID -PrincipalName $principalName -Reason $highPrivReason -PrincipalType $principalType -ConfidenceLevel $confidenceLevel
Break
}
'#microsoft.graph.group' {
$principalType = 'Group'
## Resovle members
$securityIdentifier = $principalObjectData.AdditionalProperties['securityIdentifier']
$mgGroup = Get-MgGroup -Filter "securityIdentifier eq '$($securityIdentifier)'" -Top 1
If( $mgGroup ){
$mgGroupMembers = Get-MgGroupTransitiveMember -GroupId $mgGroup.Id
ForEach($mgGroupMember in $mgGroupMembers){
$principalID = $mgGroupMember.Id
$principalName = $null
$groupMemberObjType = $mgGroupMember.AdditionalProperties['@odata.type']
$highPrivReason = "Member of group ($($mgGroup.DisplayName)) with high privileged directory Role: $($highPrivilegedDirectoryRoleTemplatesMap[$templateID])"
If( $AssignedViaPIM ){
If( $PIMAssignmentEndDateTime ){
$endDateStr = __APP-DateTimeToString -DateTime $PIMAssignmentEndDateTime
$highPrivReason = "Member of group ($($mgGroup.DisplayName)) with high privileged directory Role (via time-based PIM assignment, ending $($endDateStr)): $($highPrivilegedDirectoryRoleTemplatesMap[$templateID])"
If( $PIMAssignmentState ){
$highPrivReason = "Member of group ($($mgGroup.DisplayName)) with high privileged directory Role (via $($PIMAssignmentState) time-based PIM assignment, ending $($endDateStr)): $($highPrivilegedDirectoryRoleTemplatesMap[$templateID])"
}
}Else {
$highPrivReason = "Member of group ($($mgGroup.DisplayName)) with high privileged directory Role (via permanent PIM assignment): $($highPrivilegedDirectoryRoleTemplatesMap[$templateID])"
If( $PIMAssignmentState ){
$highPrivReason = "Member of group ($($mgGroup.DisplayName)) with high privileged directory Role (via $($PIMAssignmentState) permanent PIM assignment): $($highPrivilegedDirectoryRoleTemplatesMap[$templateID])"
}
}
}
Switch($groupMemberObjType){
'#microsoft.graph.user' {
$principalType = 'User'
$principalName = $mgGroupMember.AdditionalProperties['userPrincipalName']
Break
}
'#microsoft.graph.servicePrincipal' {
$principalType = 'ServicePrincipal'
$principalName = $mgGroupMember.AdditionalProperties['appDisplayName']
Break
}
}
## Add entry
__AAP-AddToHighPrivilegePrincipalMap -PrincipalID $principalID -PrincipalName $principalName -Reason $highPrivReason -PrincipalType $principalType -ConfidenceLevel $confidenceLevel
}
}
Break
}
'#microsoft.graph.servicePrincipal' {
$principalType = 'ServicePrincipal'
$principalName = $principalObjectData.AdditionalProperties['appDisplayName']
## Add entry
__AAP-AddToHighPrivilegePrincipalMap -PrincipalID $principalID -PrincipalName $principalName -Reason $highPrivReason -PrincipalType $principalType -ConfidenceLevel $confidenceLevel
Break
}
}
}
}Else {
$principalEntries = If( $NonHighPrivilegedRoleAssignments.Keys -Contains $TemplateName ){ ,$NonHighPrivilegedRoleAssignments.Item($TemplateName) } Else { ,@() }
## Add Principal if not already contained
If( $principalEntries.Keys -NotContains $PrincipalID ){
$principalDisplayStr = __AAP-ResolveDirectoryObjectByID -ObjectID $PrincipalID
If( $AssignedViaPIM ){
If( $PIMAssignmentEndDateTime ){
$endDateStr = __APP-DateTimeToString -DateTime $PIMAssignmentEndDateTime
If( $PIMAssignmentState ){
$principalDisplayStr += " [[ Assigned via $($PIMAssignmentState) PIM assignment (ends '$($endDateStr)') ]]"
}Else {
$principalDisplayStr += " [[ Assigned via PIM assignment (ends '$($endDateStr)') ]]"
}
}
Else {
If( $PIMAssignmentState ){
$principalDisplayStr += " [[ Assigned via $($PIMAssignmentState) PIM assignment (permanent) ]]"
}Else {
$principalDisplayStr += " [[ Assigned via PIM assignment (permanent) ]]"
}
}
}
$principalEntries += @($principalDisplayStr)
}
$NonHighPrivilegedRoleAssignments[$TemplateName] = $principalEntries
}
}
}
#-----------------------------------------------------------[Execution]------------------------------------------------------------
Function Invoke-AccessCheckForServicePrincipal {
PARAM(
[Parameter(Mandatory, ParameterSetName="ServicePrincipalIdentifier")]
[Object]
$ServicePrincipalIdentifier,
[Parameter(Mandatory, ParameterSetName="MgServicePrincipalObject")]
[Object]
$MgServicePrincipalObject,
[Parameter()]
[String]
$Outfile = $false,
[Parameter()]
[String]
$Tenant
)
Begin {
__AAP-ConnectIfNecessary -Tenant $Tenant
If($MgServicePrincipalObject){
$mgServicePrincipal = $MgServicePrincipalObject
}
ElseIf($ServicePrincipalIdentifier) {
## Try to find service principals via ID
$mgServicePrincipal = Get-MgServicePrincipal -ServicePrincipalId $ServicePrincipalIdentifier -ErrorAction SilentlyContinue
If(-Not $mgServicePrincipal){
## Try to find service principal via appID
$mgServicePrincipal = Get-MgServicePrincipal -Filter "appId eq '$($ServicePrincipalIdentifier)'" -Top 1 -ErrorAction SilentlyContinue
}
If(-Not $mgServicePrincipal){
__AAP-Log "[-] Could not find service principal: $($ServicePrincipalIdentifier)" -MsgType $MESSAGE_FAIL
}
}
Else {
$mgServicePrincipal = $null
}
}
Process {
If( $mgServicePrincipal ){
$appRoleAssignmendToResult = Get-MgServicePrincipalAppRoleAssignedTo -All -ServicePrincipalId $mgServicePrincipal.Id
$appRoleAssignmentsResult = Get-MgServicePrincipalAppRoleAssignment -All -ServicePrincipalId $mgServicePrincipal.Id
$oauthPermissionsResult = Get-MgServicePrincipalOauth2PermissionGrant -All -ServicePrincipalId $mgServicePrincipal.Id
$owner = Get-MgServicePrincipalOwner -All -ServicePrincipalId $mgServicePrincipal.Id
$delegPermissionsClassifciation = Get-MgServicePrincipalDelegatedPermissionClassification -All -ServicePrincipalId $mgServicePrincipal.Id
$mgOwnedObjectsByServicePrincipal = Get-MgServicePrincipalOwnedObject -All -ServicePrincipalId $mgServicePrincipal.Id
$createdObjs = Get-MgServicePrincipalCreatedObject -All -ServicePrincipalId $mgServicePrincipal.Id
$resourceSpecificAppPermissions = $mgServicePrincipal.ResourceSpecificApplicationPermissions
#$oauthPermissionGrants = $mgServicePrincipal.Oauth2PermissionGrants
#$oauthPermissionScopes = $mgServicePrincipal.Oauth2PermissionScopes
__AAP-Log "### Service Principal: $($mgServicePrincipal.DisplayName) ($($mgServicePrincipal.Id))"
## Owned Objects
if( $mgOwnedObjectsByServicePrincipal.Length -gt 0 ){
ForEach($mgOwnedObjectRef in $mgOwnedObjectsByServicePrincipal){
__AAP-Log "[+] User owns the following object: $($mgOwnedObjectRef.Id)" -MsgType $MESSAGE_SUCCESS
$mgOwnedObjProperties = (Get-MgDirectoryObjectById -Ids $mgOwnedObjectRef.Id).AdditionalProperties
if( $mgOwnedObjProperties ){
$mgOwnedObjProperties.Keys | %{ __AAP-Log " $($_): $($mgOwnedObjProperties[$_])" -MsgType $MESSAGE_INFO }
}
}
}
## Application-Type API Permissions of the service principal
if( $appRoleAssignmentsResult ){
__AAP-Log "[+] Application-Type API Permission access rights of this service principal:" -MsgType $MESSAGE_SUCCESS
__AAP-DisplayAppRoleAssignments -AppRoleAssignments $appRoleAssignmentsResult
}
## Delegated-Type API Permissions of the service principal
if( $oauthPermissionsResult ){
__AAP-Log "[+] Delegated-Type API Permission access rights of this service principal:" -MsgType $MESSAGE_SUCCESS
__AAP-DisplayOauth2PermissionGrants -Oauth2PermissionGrants $oauthPermissionsResult
}
## Principals with assigned AppRoles to this service account
if( $appRoleAssignmendToResult ){
__AAP-Log "[+] The following principals have an AppRole assigned for this this service account:" -MsgType $MESSAGE_SUCCESS