PoshCode Archive  Artifact Content

Artifact 47a014d3e6c279c82ad495342035a4fd7c7b20f6fa065066808c776863ea6dc7:

  • File dget-windows-product-key.ps1 — part of check-in [4735d73ed6] at 2018-06-10 13:54:22 on branch trunk — retrieve the windows product key of a specified machine using WMI (user: dasdas size: 1658)

# encoding: ascii
# api: powershell
# title: dget windows product key
# description: retrieve the windows product key of a specified machine using WMI
# version: 0.1
# type: function
# author: dasdas
# license: CC0
# function: get-windowsproductkey
# x-poshcode-id: 5380
# x-archived: 2014-08-23T20:37:18
# x-published: 2014-08-21T12:12:00
#
#
function get-windowsproductkey([string]$computer)
{
$Reg = [WMIClass] ("\\" + $computer + "\root\default:StdRegProv")
$values = [byte[]]($reg.getbinaryvalue(2147483650,"SOFTWARE\Microsoft\Windows NT\CurrentVersion","DigitalProductId").uvalue)
$lookup = [char[]]("B","C","D","F","G","H","J","K","M","P","Q","R","T","V","W","X","Y","2","3","4","6","7","8","9")
$keyStartIndex = [int]52;
$keyEndIndex = [int]($keyStartIndex + 15);
$decodeLength = [int]29
$decodeStringLength = [int]15
$decodedChars = new-object char[] $decodeLength 
$hexPid = new-object System.Collections.ArrayList
for ($i = $keyStartIndex; $i -le $keyEndIndex; $i++){ [void]$hexPid.Add($values[$i]) }
for ( $i = $decodeLength - 1; $i -ge 0; $i--)
    {                
     if (($i + 1) % 6 -eq 0){$decodedChars[$i] = '-'}
     else
       {
        $digitMapIndex = [int]0
        for ($j = $decodeStringLength - 1; $j -ge 0; $j--)
        {
            $byteValue = [int](($digitMapIndex * [int]256) -bor [byte]$hexPid[$j]);
            $hexPid[$j] = [byte] ([math]::Floor($byteValue / 24));
            $digitMapIndex = $byteValue % 24;
            $decodedChars[$i] = $lookup[$digitMapIndex];
         }
        }
     }
$STR = ''     
$decodedChars | % { $str+=$_}
$STR
}
get-windowsproductkey .