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- #Requires -Version 5
- #Requires -RunAsAdministrator
- [Cmdletbinding()]
- Param (
- [switch]$EnableInternetConnectionSharing,
- [switch]$DisableInternetConnectionSharing,
- [switch]$SetPwnagotchiSubnet,
- [ipaddress]$ScopeAddress = '192.168.137.1', # Default value, can be overridden
- [string]$SubnetPrefix = '192.168.137.' # Default prefix, can be overridden
- )
- # Load helper functions
- Function Create-HNetObjects {
- <#
- .SYNOPSIS
- A helper function that does the heavy lifting with NetCfg.HNetShare
- #>
- [Cmdletbinding()]
- Param (
- $InternetAdaptor = $(Select-NetAdaptor -Message "Please select your main ethernet adaptor with internet access that will be used for internet sharing."),
- $RNDISGadget = $(Select-NetAdaptor -Message "Please select your 'USB Ethernet/RNDIS Gadget' adaptor")
- )
- Begin {
- regsvr32.exe /s hnetcfg.dll
- $HNetShare = New-Object -ComObject HNetCfg.HNetShare
- }
- Process {
- if ($HNetShare.EnumEveryConnection -ne $null) {
- $InternetInt = $HNetShare.EnumEveryConnection | Where-Object { $HNetShare.NetConnectionProps.Invoke($_).Name -eq ($InternetAdaptor).Name }
- $InternetIntConfig = $HNetShare.INetSharingConfigurationForINetConnection.Invoke($InternetInt)
- $RNDISInt = $HNetShare.EnumEveryConnection | Where-Object { $HNetShare.NetConnectionProps.Invoke($_).Name -eq ($RNDISGadget).Name }
- $RNDISIntConfig = $HNetShare.INetSharingConfigurationForINetConnection.Invoke($RNDISInt)
- }
- }
- End {
- Return $(New-Object -TypeName PSObject -Property @{InternetIntConfig=$InternetIntConfig;RNDISIntConfig=$RNDISIntConfig;})
- }
- }
- Function Enable-InternetConnectionSharing {
- <#
- .SYNOPSIS
- Enables internet connection sharing between the 'main' uplink interface and the 'USB Ethernet/RNDIS Gadget' interface.
- #>
- [Cmdletbinding()]
- $HNetObject = Create-HNetObjects
- $HNetObject.InternetIntConfig.EnableSharing(0)
- $HNetObject.RNDISIntConfig.EnableSharing(1)
- Write-Output "[x] Enabled Internet Connection Sharing."
- }
- Function Disable-InternetConnectionSharing {
- <#
- .SYNOPSIS
- Disables internet connection sharing between the 'main' uplink interface and the 'USB Ethernet/RNDIS Gadget' interface.
- #>
- [Cmdletbinding()]
- $HNetObject = $(Create-HNetObjects)
- $HNetObject.InternetIntConfig.DisableSharing()
- $HNetObject.RNDISIntConfig.DisableSharing()
- Write-Output "[x] Disabled Internet Connection Sharing."
- }
- Function Test-PwnagotchiSubnet {
- <#
- .SYNOPSIS
- Tests the registry for the correct ScopeAddress.
- #>
- [Cmdletbinding()]
- Try {
- $RegKeys = Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters -ErrorAction Stop
- If ($RegKeys.ScopeAddress -notlike "$SubnetPrefix*") {
- Write-Error "Internet Connection Sharing is not set to the expected subnet. Run Set-PwnagotchiSubnet with the correct parameters." -ErrorAction Stop
- }
- } Catch {
- Write-Error "Error accessing registry to check ICS subnet: $_" -ErrorAction Stop
- }
- }
- Function Set-PwnagotchiSubnet {
- <#
- .SYNOPSIS
- Set the registry for the correct ScopeAddress.
- #>
- [Cmdletbinding()]
- Param (
- [ipaddress]$ScopeAddress
- )
- Try {
- [void]([ipaddress]$ScopeAddress)
- [void]([byte[]] $ScopeAddress.split('.'))
- } Catch {
- Write-Error "$ScopeAddress is not a valid IP."
- }
- Try {
- Set-ItemProperty -Name ScopeAddress -Path "HKLM:\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\" -Value $ScopeAddress -ErrorAction Stop
- Set-ItemProperty -Name ScopeAddressBackup -Path "HKLM:\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\" -Value $ScopeAddress -ErrorAction Stop
- Write-Warning "The Internet Connection Sharing subnet has been updated. A reboot of windows is required !"
- } Catch {
- $PSCmdlet.ThrowTerminatingError($PSItem)
- }
- }
- # Main Function
- Function Setup-PwnagotchiNetwork {
- <#
- .SYNOPSIS
- Function to setup networking.
- #>
- Param (
- [switch]$EnableInternetConnectionSharing,
- [switch]$DisableInternetConnectionSharing,
- [switch]$SetPwnagotchiSubnet,
- $ScopeAddress = '192.168.2.1' # Default to 192.168.2.1 for AT&T compatibility
- )
- Begin {
- Try {
- Write-Debug "Begin"
- $ErrorSplat=@{ErrorAction="stop"}
- Write-Debug "Testing subnet"
- Try {
- Test-PwnagotchiSubnet @ErrorSplat
- } Catch {
- If ($SetPwnagotchiSubnet) {
- Write-Debug "Setting subnet"
- Set-PwnagotchiSubnet -ScopeAddress $ScopeAddress @ErrorSplat
- } Else {
- Write-Error "Internet Connection Sharing is not set to the expected subnet. Run this script with the -SetPwnagotchiSubnet to setup the network." -ErrorAction Stop
- }
- }
- } Catch {
- $PSCmdlet.ThrowTerminatingError($PSItem)
- }
- }
- Process {
- Write-Debug "Process"
- Try {
- If ($EnableInternetConnectionSharing) {
- Write-Debug "Enable network Sharing"
- Enable-InternetConnectionSharing @ErrorSplat
- } ElseIf ($DisableInternetConnectionSharing) {
- Write-Debug "Disable network Sharing"
- Disable-InternetConnectionSharing @ErrorSplat
- }
- } Catch {
- $PSCmdlet.ThrowTerminatingError($PSItem)
- }
- }
- End {
- Write-Debug "End"
- Try {
- # Nothing to return.
- } Catch {
- $PSCmdlet.ThrowTerminatingError($PSItem)
- }
- }
- }
- Function Select-NetAdaptor {
- <#
- .SYNOPSIS
- A menu function to select the correct network adaptors.
- #>
- Param (
- $Message
- )
- $Adaptors = Get-NetAdapter | Where-Object {$_.MediaConnectionState -eq 'Connected'} | Sort-Object LinkSpeed -Descending
- do {
- Write-Host $Message
- $index = 1
- foreach ($Adaptor in $Adaptors) {
- Write-Host "[$index] $($Adaptor.Name), $($Adaptor.InterfaceDescription)"
- $index++
- }
- $Selection = Read-Host "Number"
- } until ($Adaptors[$selection-1])
- Return $Adaptors[$selection-1]
- }
- # Dynamically create params for Setup-PwnagotchiNetwork function based on script input.
- Setup-PwnagotchiNetwork @psBoundParameters
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