Extract a password from a saved .rdp file.
I choose complex passwords and I quickly forget them. I save them in rdp files so that I can just click the file and it will automatically log me into a remote desktop connection.
Recently I forgot a password and I really wanted it back. I googled.
Then with some knowledge, I made a stupid and ugly Windows Forms application which lets me extract the encoded password crypt from an rdp file, paste it into a TextBox and click a button to decrypt.
Ok, so the data is fake. All zeros does not decode and decrypt to “thisismypassword”. But it works 
The interesting bits are very short after pulling together the p/invoke and hex encode library.
int discarded;
byte[] bytes =
Utility.HexEncoding.GetBytes( input.Text, out discarded );
System.Text.ASCIIEncoding acsciiencoding = new ASCIIEncoding();
System.Text.UnicodeEncoding lUnicodeEncoding = new UnicodeEncoding();
byte[] lDecryptedBytes = dataProtector.Decrypt( bytes, null );
string decrypted = Utility.HexEncoding.ToString( lDecryptedBytes );
output.Text = “decrypted:”+decrypted + Environment.NewLine +
“unicode:” + lUnicodeEncoding.GetString( lDecryptedBytes, 0, lDecryptedBytes.Length ) +
Environment.NewLine +
“ascii:” + acsciiencoding.GetString( lDecryptedBytes, 0, lDecryptedBytes.Length )
+ Environment.NewLine
;
I like it when things are simple.
April 19th, 2007 at 5:10 pm
I don’t suppose there’s a downloadable executable for non-coders?
June 18th, 2008 at 2:11 pm
Hi!
Could you share your complete code with me, please?
Thanks,
Jan