Use el siguiente script de Powershell para descifrar todas las contraseñas en un archivo RDG de una sola vez.
https://github.com/nettitude/PoshC2/blob/master/resources/modules/Decrypt-RDCMan.ps1
En caso de que el enlace falle, aquí está el contenido para referencia:
function Decrypt-RDCMan ($FilePath) {
<#
.SYNOPSIS
This script should be able to decrpt all passwords stored in the RDCMan config file
Function: Decrypt-RDCMan
Author:Ben Turner @benpturner, Rich Hicks @scriptmonkey_
.EXAMPLE
Decrypt-RDCMan -FilePath
#>
if (!$FilePath) {
[xml]$config = Get-Content "$env:LOCALAPPDATA\microsoft\remote desktop connection manager\rdcman.settings"
$Xml = Select-Xml -Xml $config -XPath "//FilesToOpen/*"
$Xml | select-object -ExpandProperty "Node"| % {Write-Output "Decrypting file: " $_.InnerText; Decrypt-RDCMan $_.InnerText}
} else {
[xml]$Types = Get-Content $FilePath
$Xml = Select-Xml -Xml $Types -XPath "//logonCredentials"
# depending on the RDCMan version we may need to change the XML search
$Xml | select-object -ExpandProperty "Node" | % { $pass = Decrypt-DPAPI $_.Password; $_.Domain + "\" + $_.Username + " - " + $Pass + " - " + "Hash:" + $_.Password + "`n" }
# depending on the RDCMan version, we may have to use search through the #text field in the XML structure
$Xml | select-object -ExpandProperty "Node" | % { $pass = Decrypt-DPAPI $_.Password."#text"; $_.Domain + "\" + $_.Username + "`n" + $Pass + " - Hash: " + $_.Password."#text" + "`n"}
}
}
function Decrypt-DPAPI ($EncryptedString) {
# load the Security Assembly into the PS runspace
Add-Type -assembly System.Security
$encoding= [System.Text.Encoding]::ASCII
$uencoding = [System.Text.Encoding]::UNICODE
# try and decrypt the password with the CurrentUser Scope
try {
$encryptedBytes = [System.Convert]::FromBase64String($encryptedstring)
$bytes1 = [System.Security.Cryptography.ProtectedData]::Unprotect($encryptedBytes, $null, [System.Security.Cryptography.DataProtectionScope]::CurrentUser)
[System.Text.Encoding]::Convert([System.Text.Encoding]::UNICODE, $encoding, $bytes1) | % { $myStr1 += [char]$_}
echo $myStr1
}
catch {
# try and decrypt the password with the LocalMachine Scope only if the CurrentUser fails
try {
$encryptedBytes = [System.Convert]::FromBase64String($encryptedstring)
$bytes1 = [System.Security.Cryptography.ProtectedData]::Unprotect($encryptedBytes, $null, [System.Security.Cryptography.DataProtectionScope]::LocalMachine)
[System.Text.Encoding]::Convert([System.Text.Encoding]::UNICODE, $encoding, $bytes1) | % { $myStr1 += [char]$_}
echo $myStr1
}
catch {
echo "Could not decrypt password"
}
}
}
Ejecute el script en Powershell ISE, que debería registrar las funciones. Entonces simple ejecución:
Descifrar-RDCMan -FilePath MyRDGfile.rdg