This is how you embed resource files right into your PowerShell script, meaning….if you have loose files that are required by your script, you can include those files inside your script. Very cool!
Encoding/Decoding a Text File
clear-host # Encode $File1 = "c:\setup\YourFile.txt" $Content1 = get-content $File1 $Bytes = [System.Text.Encoding]::UTF8.GetBytes($Content1) $Encoded = [System.Convert]::ToBase64String($Bytes) #$Encoded | set-content ($File1 + ".b64") Write-Host "ENCODED: " $Encoded # Decode [System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String($Encoded)) | Out-File -Encoding "ASCII" c:\setup\YourFileDecoded.txt $Content2 = get-content c:\setup\YourFileDecoded.txt Write-Host "DECODED: " $Content2
Encoding/Decoding an EXE
clear-host
# Encode
$FilePath = "c:\setup\foo.exe"
$File = [System.IO.File]::ReadAllBytes($FilePath);
# returns the base64 string
$Base64String = [System.Convert]::ToBase64String($File);
# Decode
function Convert-StringToBinary {
[CmdletBinding()]
param (
[string] $EncodedString
, [string] $FilePath = (‘{0}\{1}’ -f $env:TEMP, [System.Guid]::NewGuid().ToString())
)
try {
if ($EncodedString.Length -ge 1) {
# decodes the base64 string
$ByteArray = [System.Convert]::FromBase64String($EncodedString);
[System.IO.File]::WriteAllBytes($FilePath, $ByteArray);
}
}
catch {
}
Write-Output -InputObject (Get-Item -Path $FilePath);
}
$DecodedFile = Convert-StringToBinary -EncodedString $Base64String -FilePath C:\setup\foo.exe
Notes
Decode Base64 Image String
$Base64String = 'TheBase64StringHere' $Image = "$env:TEMP\ImageName.png" [byte[]]$Bytes = [convert]::FromBase64String($Base64String) [System.IO.File]::WriteAllBytes($Image,$Bytes)
Read File into Byte Array
[byte[]]$Bytes1 = Get-Content "C:\PowerShell\foo1.exe" -Encoding byte
Write Byte Array to File
[System.IO.File]::WriteAllBytes("C:\PowerShell\foo2.exe", $Bytes2)
Convert Hex String to Byte Array
$Bytes2 = [byte[]]::new($Hex.Length / 2)
For($i=0; $i -lt $Hex.Length; $i+=2){
$Bytes2[$i/2] = [convert]::ToByte($Hex.Substring($i, 2), 16)
}
Convert Byte Array to Hex
$Hex = [bitconverter]::ToString($Bytes1).Replace("-", "");
or
$Hex = [System.Text.StringBuilder]::new($Bytes.Length * 2)
ForEach($byte in $Bytes){
$Hex.AppendFormat("{0:x2}", $byte) | Out-Null
}
Return Hex Values
function Get-HexValues
{
[CmdletBinding()] Param
(
[Parameter(Mandatory = $True, ValueFromPipelineByPropertyName = $True)]
[Alias("FullName","FilePath")] $Path,
[Int] $Width = 16,
[Int] $Count = -1,
[String] $PlaceHolder = ".",
[Switch] $NoOffset,
[Switch] $NoText
)
$linecounter = 0
#$placeholder = "."
get-content $path -encoding byte -readcount $width -totalcount $count |
foreach-object `
{
$paddedhex = $text = $null
$bytes = $_
foreach ($byte in $bytes)`
{
$byteinhex = [String]::Format("{0:X}", $byte)
$paddedhex += $byteinhex.PadLeft(2,"0") + " "
}
if ($paddedhex.length -lt $width * 3)
{ $paddedhex = $paddedhex.PadRight($width * 3," ") }
foreach ($byte in $bytes)`
{
if ( [Char]::IsLetterOrDigit($byte) -or
[Char]::IsPunctuation($byte) -or
[Char]::IsSymbol($byte) )
{ $text += [Char] $byte }
else
{ $text += $placeholder }
}
$offsettext = [String]::Format("{0:X}", $linecounter)
$offsettext = $offsettext.PadLeft(8,"0") + "h:"
$linecounter += $width # Increment linecounter.
if (-not $NoOffset) { $paddedhex = "$offsettext $paddedhex" }
if (-not $NoText) { $paddedhex = $paddedhex + $text }
$paddedhex
}
}
Get-HexValues C:\PowerShell\foo1.exe
tags: MrNetTek