public class AnalysisOfMachineCode
{
[TestMethod]
public void test()
{
Debug.WriteLine(getMachineCode());
}
[SecuritySafeCritical]
public static int getMachineCode()
{
ManagementObjectSearcher searcher = new ManagementObjectSearcher("select * from Win32_Processor");
string collectedInfo = "";
// here we will put the informa
foreach (ManagementObject share in searcher.Get())
{
// first of all, the processorid
collectedInfo += share.GetPropertyValue("ProcessorId");
}
searcher.Query = new ObjectQuery("select * from Win32_BIOS");
foreach (ManagementObject share in searcher.Get())
{
//then, the serial number of BIOS
collectedInfo += share.GetPropertyValue("SerialNumber");
}
searcher.Query = new ObjectQuery("select * from Win32_BaseBoard");
foreach (ManagementObject share in searcher.Get())
{
//finally, the serial number of motherboard
collectedInfo += share.GetPropertyValue("SerialNumber");
}
// patch luca bernardini
if (string.IsNullOrEmpty(collectedInfo) | collectedInfo == "00" | collectedInfo.Length <= 3)
{
collectedInfo += getHddSerialNumber();
}
return getEightByteHash(collectedInfo, 1000000);
}
[SecuritySafeCritical]
public static string getHddSerialNumber()
{
// --- Win32 Disk
ManagementObjectSearcher searcher = new ManagementObjectSearcher("\\root\\cimv2", "select * from Win32_DiskPartition WHERE BootPartition=True");
uint diskIndex = 999;
foreach (ManagementObject partition in searcher.Get())
{
diskIndex = Convert.ToUInt32(partition.GetPropertyValue("Index"));
break; // TODO: might not be correct. Was : Exit For
}
// I haven't found the bootable partition. Fail.
if (diskIndex == 999)
return string.Empty;
// --- Win32 Disk Drive
searcher = new ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive where Index = " + diskIndex.ToString());
string deviceName = "";
foreach (ManagementObject wmi_HD in searcher.Get())
{
deviceName = wmi_HD.GetPropertyValue("Name").ToString();
break; // TODO: might not be correct. Was : Exit For
}
// I haven't found the disk drive. Fail
if (string.IsNullOrEmpty(deviceName.Trim()))
return string.Empty;
// -- Some problems in query parsing with backslash. Using like operator
if (deviceName.StartsWith("\\\\.\\"))
{
deviceName = deviceName.Replace("\\\\.\\", "%");
}
// --- Physical Media
searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia WHERE Tag like '" + deviceName + "'");
string serial = string.Empty;
foreach (ManagementObject wmi_HD in searcher.Get())
{
serial = wmi_HD.GetPropertyValue("SerialNumber").ToString();
break; // TODO: might not be correct. Was : Exit For
}
return serial;
}
public static int getEightByteHash(string s, int MUST_BE_LESS_THAN = 1000000000)
{
//This function generates a eight byte hash
//The length of the result might be changed to any length
//just set the amount of zeroes in MUST_BE_LESS_THAN
//to any length you want
uint hash = 0;
foreach (byte b in System.Text.Encoding.Unicode.GetBytes(s))
{
hash += b;
hash += (hash << 10);
hash ^= (hash >> 6);
}
hash += (hash << 3);
hash ^= (hash >> 11);
hash += (hash << 15);
int result = (int)(hash % MUST_BE_LESS_THAN);
int check = MUST_BE_LESS_THAN / result;
if (check > 1)
{
result *= check;
}
return result;
}
}
