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Sharkrit/Get-WindowsKey.ps1

Created June 25, 2017 06:32
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  1. Sharkrit created this gist Jun 25, 2017.
    42 changes: 42 additions & 0 deletions Get-WindowsKey.ps1
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    Original file line number Diff line number Diff line change
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    function Get-WindowsKey {
    ## function to retrieve the Windows Product Key from any PC
    ## by Jakob Bindslet (jakob@bindslet.dk)
    param ($targets = ".")
    $hklm = 2147483650
    $regPath = "Software\Microsoft\Windows NT\CurrentVersion"
    $regValue = "DigitalProductId"
    Foreach ($target in $targets) {
    $productKey = $null
    $win32os = $null
    $wmi = [WMIClass]"\\$target\root\default:stdRegProv"
    $data = $wmi.GetBinaryValue($hklm,$regPath,$regValue)
    $binArray = ($data.uValue)[52..66]
    $charsArray = "B","C","D","F","G","H","J","K","M","P","Q","R","T","V","W","X","Y","2","3","4","6","7","8","9"
    ## decrypt base24 encoded binary data
    For ($i = 24; $i -ge 0; $i--) {
    $k = 0
    For ($j = 14; $j -ge 0; $j--) {
    $k = $k * 256 -bxor $binArray[$j]
    $binArray[$j] = [math]::truncate($k / 24)
    $k = $k % 24
    }
    $productKey = $charsArray[$k] + $productKey
    If (($i % 5 -eq 0) -and ($i -ne 0)) {
    $productKey = "-" + $productKey
    }
    }
    $win32os = Get-WmiObject Win32_OperatingSystem -computer $target
    $obj = New-Object Object
    $obj | Add-Member Noteproperty Computer -value $target
    $obj | Add-Member Noteproperty Caption -value $win32os.Caption
    $obj | Add-Member Noteproperty CSDVersion -value $win32os.CSDVersion
    $obj | Add-Member Noteproperty OSArch -value $win32os.OSArchitecture
    $obj | Add-Member Noteproperty BuildNumber -value $win32os.BuildNumber
    $obj | Add-Member Noteproperty RegisteredTo -value $win32os.RegisteredUser
    $obj | Add-Member Noteproperty ProductID -value $win32os.SerialNumber
    $obj | Add-Member Noteproperty ProductKey -value $productkey
    $obj
    }
    }

    Get-WindowsKey