3 files changed, 114 insertions, 0 deletions
diff --git a/WinKeyRecover/KeyChecker/CheckKey.cs b/WinKeyRecover/KeyChecker/CheckKey.cs
new file mode 100644
index 0000000..96b1f0e
--- /dev/null
+++ b/WinKeyRecover/KeyChecker/CheckKey.cs
@@ -0,0 +1,62 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WinKeyRecover
+{
+    internal class CheckKey
+    {        
+        private readonly IntPtr hModule;
+        private readonly string fileXml;
+        private readonly string mspid = "00000";
+        private readonly byte[] array = new byte[50];
+        private readonly byte[] array2 = new byte[164];
+        private readonly byte[] array3 = new byte[1272];
+        private readonly IntPtr intPtr = Marshal.AllocHGlobal(50);
+        private readonly IntPtr intPtr2 = Marshal.AllocHGlobal(164);
+        private readonly IntPtr intPtr3 = Marshal.AllocHGlobal(1272);
+        private readonly GetProductDescription getProductDescription = new GetProductDescription();
+        private readonly GetString getString = new GetString();
+        private string result;
+
+        public CheckKey(IntPtr hModule, string fileXml)
+        {
+            this.hModule = hModule;
+            this.fileXml = fileXml;
+            array[0] = 50;
+            array2[0] = 164;
+            array3[0] = 248;
+            array3[1] = 4;
+            Marshal.Copy(array, 0, intPtr, 50);
+            Marshal.Copy(array2, 0, intPtr2, 164);
+            Marshal.Copy(array3, 0, intPtr3, 1272);
+        }
+
+        public string Check(string key)
+        {
+            int num = ((NativeMethods.PidGenX)Marshal.GetDelegateForFunctionPointer(NativeMethods.GetProcAddress(hModule, "PidGenX"), typeof(NativeMethods.PidGenX)))(key, fileXml, mspid, 0, intPtr, intPtr2, intPtr3);
+            if (num == 0)
+            {
+                Marshal.Copy(intPtr3, array3, 0, array3.Length);
+                string @string = getString.Get(array3, 136);
+                result = getProductDescription.Get("{" + @string + "}", fileXml);
+            }
+            else
+            {
+                result = "Invalid";
+            }
+
+            return result;
+        }
+
+        public void FreeMemory()
+        {
+            Marshal.FreeHGlobal(intPtr);
+            Marshal.FreeHGlobal(intPtr2);
+            Marshal.FreeHGlobal(intPtr3);
+        }
+    }
+}
diff --git a/WinKeyRecover/KeyChecker/GetProductDescription.cs b/WinKeyRecover/KeyChecker/GetProductDescription.cs
new file mode 100644
index 0000000..3a42418
--- /dev/null
+++ b/WinKeyRecover/KeyChecker/GetProductDescription.cs
@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml;
+
+namespace WinKeyRecover
+{
+    internal class GetProductDescription
+    {
+        public string Get(string aid, string fileXml)
+        {
+            XmlDocument xmlDocument = new XmlDocument();
+            xmlDocument.Load(fileXml);
+            Stream inStream = new MemoryStream(Convert.FromBase64String(xmlDocument.GetElementsByTagName("tm:infoBin")[0].InnerText));
+            xmlDocument.Load(inStream);
+            XmlNamespaceManager xmlNamespaceManager = new XmlNamespaceManager(xmlDocument.NameTable);
+            xmlNamespaceManager.AddNamespace("pkc", "http://www.microsoft.com/DRM/PKEY/Configuration/2.0");
+            XmlNode xmlNode = xmlDocument.SelectSingleNode("/pkc:ProductKeyConfiguration/pkc:Configurations/pkc:Configuration[pkc:ActConfigId='" + aid + "']", xmlNamespaceManager);
+            if (xmlNode == null)
+            {
+                xmlNode = xmlDocument.SelectSingleNode("/pkc:ProductKeyConfiguration/pkc:Configurations/pkc:Configuration[pkc:ActConfigId='" + aid.ToUpper() + "']", xmlNamespaceManager);
+            }
+            return xmlNode.ChildNodes.Item(3).InnerText;
+        }
+    }
+}
diff --git a/WinKeyRecover/KeyChecker/GetString.cs b/WinKeyRecover/KeyChecker/GetString.cs
new file mode 100644
index 0000000..bad8722
--- /dev/null
+++ b/WinKeyRecover/KeyChecker/GetString.cs
@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WinKeyRecover
+{
+    internal class GetString
+    {
+        public string Get(byte[] bytes, int index)
+        {
+            int num = index;
+
+            while (bytes[num] != 0 || bytes[num + 1] != 0)
+            {
+                num++;
+            }
+
+            return Encoding.ASCII.GetString(bytes, index, num - index).Replace("\0", "");
+        }
+    }
+}