Private/Expand-Intunewin.ps1
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function Expand-Intunewin { [cmdletbinding()] param ( [Parameter(Mandatory = $true)] [System.IO.FileInfo]$InputFile, [Parameter(Mandatory = $true)] [System.IO.FileInfo]$OutputFolder, [Parameter(Mandatory = $true)] [string]$EncKey, [Parameter(Mandatory = $true)] [string]$EncIV ) try { #region generate crypto and decrypt objects $aes = [System.Security.Cryptography.Aes]::Create() $aes.Key = [system.convert]::FromBase64String($EncKey) $aes.IV = [system.convert]::FromBase64String($EncIv) $decryptor = $aes.CreateDecryptor($aes.Key, $aes.IV) #endregion #region decrypt the target file $file = Get-Item $InputFile $destinationFile = "$(Split-Path -Path $file.FullName -Parent)\$($file.name -replace '.bin').zip" $fileStreamReader = New-Object System.IO.FileStream($File.FullName, [System.IO.FileMode]::Open) $fileStreamWriter = New-Object System.IO.FileStream($destinationFile, [System.IO.FileMode]::Create) $cryptoStream = New-Object System.Security.Cryptography.CryptoStream($fileStreamWriter, $decryptor, [System.Security.Cryptography.CryptoStreamMode]::Write) $fileStreamReader.CopyTo($cryptoStream) Expand-7Zip -ArchiveFileName $destinationFile -TargetPath "$OutputFolder\$($file.name -replace '.bin')" #endregion } catch { Write-Warning $_.Exception.Message } finally { #region dispose of all open objects Write-Verbose "Cleaning everything up.." $cryptoStream.FlushFinalBlock() $cryptoStream.Dispose() $fileStreamReader.Dispose() $fileStreamWriter.Dispose() $aes.Dispose() #endregion } } |