added runtime patcher, added MemoryUtils, fixes

WeModPatcher/Constants.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Reflection;
+using WeModPatcher.Models;
 
 namespace WeModPatcher
 {
@@ -10,6 +11,25 @@ namespace WeModPatcher
         public static readonly string RepositoryUrl = $"https://github.com/{Owner}/{RepoName}";
         public static readonly Version Version;
 
+        // cmp     dword ptr [rdx], 0
+        // jnz     loc_XXXXXXXX 
+        // mov     rsi, rdx
+        public static Signature ExePatchSignature = new Signature(
+            "83 3A 00 0F ?? ?? 01 00 00 48 89 D6 48 B8",
+            4,
+            new byte[]{ 0x84, 0x17 },
+            new byte[]{ 0x85, 0x22 }
+        );
+        
+        /*// ...
+        // test eax, eax (0x85 for	r/m16/32/64)
+        // jnz      short loc_1403A4DD2 (Integrity check failed)
+        // call    near ptr funk_1445527E0
+        // ...
+        private const string PatchSignature = "E8 ?? ?? ?? ?? ?? C0 75 ?? F6 C3 01 74 ?? 48 89 F9 E8 ?? ?? ?? ??";
+        private static readonly byte[] PatchBytes = { 0x31 };
+        private const int PatchOffset = 0x5;*/
+
         static  Constants()
         {
             Version = Assembly.GetExecutingAssembly().GetName().Version;