collectors/azure/bastion/Get-MonkeyAzBastion.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-MonkeyAzBastion {
<#
        .SYNOPSIS
        Collector to get Bastions from Azure
 
        .DESCRIPTION
        Collector to get Bastions from Azure
 
        .INPUTS
 
        .OUTPUTS
 
        .EXAMPLE
 
        .NOTES
            Author : Juan Garrido
            Twitter : @tr1ana
            File Name : Get-MonkeyAzBastion
            Version : 1.0
 
        .LINK
            https://github.com/silverhack/monkey365
    #>


    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $false,HelpMessage = "Background Collector ID")]
        [string]$collectorId
    )
    begin {
        #Collector metadata
        $monkey_metadata = @{
            Id = "az00015";
            Provider = "Azure";
            Resource = "Bastion";
            ResourceType = $null;
            resourceName = $null;
            collectorName = "Get-MonkeyAzBastion";
            ApiType = "resourceManagement";
            description = "Collector to get information about Azure Bastion";
            Group = @();
            Tags = @(

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

            );
            enabled = $true;
            supportClientCredential = $true
        }
        #Get Config
        $config = $O365Object.internal_config.ResourceManager | Where-Object { $_.Name -eq "bastionHost" } | Select-Object -ExpandProperty resource
        #Get bastions
        $bastions = $O365Object.all_resources.Where({ $_.type -like '*Microsoft.Network/bastionHosts*' })
        #Set array
        $all_bastions = [System.Collections.Generic.List[System.Management.Automation.PSObject]]::new()
    }
    process {
        If($bastions.Count -eq 0){
            $msg = @{
                MessageData = ($message.MonkeyGenericTaskMessage -f $collectorId,"Azure Bastion",$O365Object.current_subscription.displayName);
                callStack = (Get-PSCallStack | Select-Object -First 1);
                logLevel = 'info';
                InformationAction = $O365Object.InformationAction;
                Tags = @('AzureBastionInfo');
            }
            Write-Information @msg
            ForEach($_host in $bastions.GetEnumerator()){
                $p = @{
                    Id = $_host.Id;
                    ApiVersion = $config.api_version;
                    Verbose = $O365Object.verbose;
                    Debug = $O365Object.debug;
                    InformationAction = $O365Object.InformationAction;
                }
                $bastion = Get-MonkeyAzObjectById @p
                If($bastion){
                    [void]$all_bastions.Add($bastion);
                }
            }
        }
    }
    End {
        If ($all_bastions) {
            $all_bastions.PSObject.TypeNames.Insert(0,'Monkey365.Azure.Bastion')
            [pscustomobject]$obj = @{
                Data = $all_bastions;
                Metadata = $monkey_metadata;
            }
            $returnData.az_bastions = $obj
        }
        Else {
            $msg = @{
                MessageData = ($message.MonkeyEmptyResponseMessage -f "Azure Bastion",$O365Object.TenantID);
                callStack = (Get-PSCallStack | Select-Object -First 1);
                logLevel = "verbose";
                InformationAction = $O365Object.InformationAction;
                Tags = @('AzureBastionEmptyResponse');
                Verbose = $O365Object.Verbose;
            }
            Write-Verbose @msg
        }
    }
}