collectors/entraid/graphlegacy/policies/Get-MonkeyADPolicy.ps1

# Monkey365 - the PowerShell Cloud Security Tool for Azure and Microsoft 365 (copyright 2022) by Juan Garrido
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.



function Get-MonkeyADPolicy {
<#
        .SYNOPSIS
        Collector to get policies from Microsoft Entra ID
        https://msdn.microsoft.com/en-us/library/azure/ad/graph/api/policy-operations
 
        .DESCRIPTION
        Collector to get policies from Microsoft Entra ID
        https://msdn.microsoft.com/en-us/library/azure/ad/graph/api/policy-operations
 
        .INPUTS
 
        .OUTPUTS
 
        .EXAMPLE
 
        .NOTES
            Author : Juan Garrido
            Twitter : @tr1ana
            File Name : Get-MonkeyADPolicy
            Version : 1.0
 
        .LINK
            https://github.com/silverhack/monkey365
    #>


    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $false,HelpMessage = "Background Collector ID")]
        [string]$collectorId
    )
    begin {
        $Environment = $O365Object.Environment
        #Collector metadata
        $monkey_metadata = @{
            Id = "aad0003";
            Provider = "EntraID";
            Resource = "EntraID";
            ResourceType = $null;
            resourceName = $null;
            collectorName = "Get-MonkeyADPolicy";
            ApiType = "Graph";
            description = "Collector to get policies from Microsoft Entra ID";
            Group = @(
                "EntraID"
            );
            Tags = @(

            );
            references = @(
                "https://silverhack.github.io/monkey365/"
            );
            ruleSuffixes = @(
                "aad_domain_policies"
            );
            dependsOn = @(

            );
            enabled = $true;
            supportClientCredential = $true
        }
        #Get Azure Active Directory Auth
        $AADAuth = $O365Object.auth_tokens.Graph
        #Get Config
        try {
            $aadConf = $O365Object.internal_config.entraId.Provider.Graph
        }
        catch {
            $msg = @{
                MessageData = ($message.MonkeyInternalConfigError);
                callStack = (Get-PSCallStack | Select-Object -First 1);
                logLevel = 'verbose';
                InformationAction = $O365Object.InformationAction;
                Tags = @('Monkey365ConfigError');
            }
            Write-Verbose @msg
            break
        }
        #Excluded auth
        $ExcludedAuths = @("certificate_credentials","client_credentials")
        if ($ExcludedAuths -contains $O365Object.AuthType) {
            $api_version = $aadConf.api_version
        }
        else {
            $api_version = $aadConf.internal_api_version
        }
    }
    process {
        $msg = @{
            MessageData = ($message.MonkeyGenericTaskMessage -f $collectorId,"Microsoft Entra ID policies",$O365Object.TenantID);
            callStack = (Get-PSCallStack | Select-Object -First 1);
            logLevel = 'info';
            InformationAction = $O365Object.InformationAction;
            Tags = @('AzureGraphPolicies');
        }
        Write-Information @msg
        #Get policies
        $URI = ("{0}/myorganization/policies?api-version={1}" -f $Environment.Graph,`
                 $api_version)
        #Get policies
        $params = @{
            Authentication = $AADAuth;
            OwnQuery = $URI;
            Environment = $Environment;
            ContentType = 'application/json';
            Method = "GET";
            InformationAction = $O365Object.InformationAction;
            Verbose = $O365Object.Verbose;
            Debug = $O365Object.Debug;
        }
        $all_policies = Get-MonkeyGraphObject @params
    }
    end {
        if ($all_policies) {
            $all_policies.PSObject.TypeNames.Insert(0,'Monkey365.EntraID.Policies')
            [pscustomobject]$obj = @{
                Data = $all_policies;
                Metadata = $monkey_metadata;
            }
            $returnData.aad_domain_policies = $obj
        }
        else {
            $msg = @{
                MessageData = ($message.MonkeyEmptyResponseMessage -f "Microsoft Entra ID Policies",$O365Object.TenantID);
                callStack = (Get-PSCallStack | Select-Object -First 1);
                logLevel = "verbose";
                InformationAction = $O365Object.InformationAction;
                Tags = @('AzureGraphPoliciesEmptyResponse');
                Verbose = $O365Object.Verbose;
            }
            Write-Verbose @msg
        }
    }
}