#Function written by Matt Graeber, Twitter: @mattifestation, Blog: http://www.exploit-monday.com/
Function Get-ProcAddress
{
Param
(
[OutputType([IntPtr])]
[Parameter( Position = 0, Mandatory = $True )]
[String]
$Module,
[Parameter( Position = 1, Mandatory = $True )]
[String]
$Procedure
)
# Get a reference to System.dll in the GAC
$SystemAssembly = [AppDomain]::CurrentDomain.GetAssemblies() |
Where-Object { $_.GlobalAssemblyCache -And $_.Location.Split('\\')[-1].Equals('System.dll') }
$UnsafeNativeMethods = $SystemAssembly.GetType('Microsoft.Win32.UnsafeNativeMethods')
# Get a reference to the GetModuleHandle and GetProcAddress methods
$GetModuleHandle = $UnsafeNativeMethods.GetMethod('GetModuleHandle')
$GetProcAddress = $UnsafeNativeMethods.GetMethod('GetProcAddress')
# Get a handle to the module specified
$Kern32Handle = $GetModuleHandle.Invoke($null, @($Module))
$tmpPtr = New-Object IntPtr
$HandleRef = New-Object System.Runtime.InteropServices.HandleRef($tmpPtr, $Kern32Handle)
# Return the address of the function
Write-Output $GetProcAddress.Invoke($null, @([System.Runtime.InteropServices.HandleRef]$HandleRef, $Procedure))
}
0x00 error info
0x01 Get-ProcAddress func details
0x02 system info