Beispiel #1
0
        public static ExecutableInfo GetExeType(string filename)
        {
            if (ExeTypeCache.ContainsKey(filename))
                return ExeTypeCache[filename];

            var pe = new PEInfo(filename);
            var result = (pe.Is32Bit ? ExecutableInfo.x86 : ExecutableInfo.none)
                | (pe.Is64Bit ? ExecutableInfo.x64 : ExecutableInfo.none)
                | (pe.IsManaged ? ExecutableInfo.managed : ExecutableInfo.native)
                | (pe.IsAny ? ExecutableInfo.any : ExecutableInfo.none);

            ExeTypeCache.Add(filename, result);
            return result;
        }
Beispiel #2
0
		public void CopyResources(PEInfo info, IEnumerable<IntPtr> types)
		{
			foreach (var type in types)
			{
				try
				{
					var find = $"\\{type}\\";
					foreach (var res in info.ResourceNames.Where(name => name.StartsWith(find)))
					{
						var id = (IntPtr)int.Parse(res.Substring(find.Length));
						var data = info.GetResource(res);
						Native.UpdateResource(handle, type, id, 0, data, data.Length);
					}
				}
				catch { }
			}
		}
Beispiel #3
0
        private ToolInfo IdentifyMicrosoftProduct(PEInfo peInfo)
        {
            var result = new ToolInfo {
                Vendor = ToolVendor.Microsoft,
                MajorVersion = peInfo.VersionInfo.ProductMajorPart,
                MinorVersion = peInfo.VersionInfo.ProductMinorPart
            };

            switch (peInfo.VersionInfo.InternalName.ToLower()) {
                case "cl.exe":
                    result.Type = ToolType.CCompiler;
                    break;
                case "lib.exe":
                    result.Type = ToolType.Lib;
                    break;
                case "link.exe":
                    result.Type = ToolType.Linker;
                    break;

                case "masm.exe":
                case "ml.exe":
                    result.Type = ToolType.Assember;
                    break;

                case "ilasm.exe":
                    result.Type = ToolType.ILAssembler;
                    break;

                case "ildasm.exe":
                    result.Type = ToolType.ILDisasembler;
                    break;

                case "as.exe":
                    result.Type = ToolType.AssemblyLinker;
                    break;

                case "nmake.exe":
                    result.Type = ToolType.Make;
                    break;

                case "mc.exe":
                    result.Type = ToolType.MessageCompiler;
                    break;

                case "rc.exe":
                    result.Type = ToolType.ResourceCompiler;
                    break;

                case "midl":
                case "midlc":
                case "midl.exe":
                    result.Type = ToolType.IDLCompiler;
                    break;

                case "mt.exe":
                case "mt2.exe":
                    result.Type = ToolType.ManifestTool;
                    break;

                default:
                    result.Type = ToolType.Unknown;
                    break;
            }
            return result;
        }
Beispiel #4
0
        void InstallationStep1()
        {
            ApiGroup.IsEnabled         = true;
            SetupButton.IsEnabled      = false;
            ApiGroup.Visibility        = ApiD3D9.Visibility = ApiDXGI.Visibility = ApiOpenGL.Visibility = ApiVulkan.Visibility = Visibility.Visible;
            ApiVulkanGlobal.Visibility = ApiVulkanGlobalButton.Visibility = Visibility.Collapsed;

            var info = FileVersionInfo.GetVersionInfo(targetPath);

            targetName = info.FileDescription;
            if (targetName is null || targetName.Trim().Length == 0)
            {
                targetName = Path.GetFileNameWithoutExtension(targetPath);
            }

            UpdateStatus("Working on " + targetName + " ...", "Analyzing executable ...");

            var peInfo = new PEInfo(targetPath);

            is64Bit = peInfo.Type == PEInfo.BinaryType.IMAGE_FILE_MACHINE_AMD64;

            // Check whether the API is specified in the compatibility list, in which case setup can continue right away
            var executableName = Path.GetFileName(targetPath);

            if (compatibilityIni != null && compatibilityIni.HasValue(executableName, "RenderApi"))
            {
                string api = compatibilityIni.GetString(executableName, "RenderApi");

                ApiD3D9.IsChecked   = api == "D3D8" || api == "D3D9";
                ApiDXGI.IsChecked   = api == "D3D10" || api == "D3D11" || api == "D3D12" || api == "DXGI";
                ApiOpenGL.IsChecked = api == "OpenGL";
                ApiVulkan.IsChecked = api == "Vulkan";

                InstallationStep2();
                return;
            }

            bool isApiD3D8   = peInfo.Modules.Any(s => s.StartsWith("d3d8", StringComparison.OrdinalIgnoreCase));
            bool isApiD3D9   = isApiD3D8 || peInfo.Modules.Any(s => s.StartsWith("d3d9", StringComparison.OrdinalIgnoreCase));
            bool isApiDXGI   = peInfo.Modules.Any(s => s.StartsWith("dxgi", StringComparison.OrdinalIgnoreCase) || s.StartsWith("d3d1", StringComparison.OrdinalIgnoreCase) || s.Contains("GFSDK"));           // Assume DXGI when GameWorks SDK is in use
            bool isApiOpenGL = peInfo.Modules.Any(s => s.StartsWith("opengl32", StringComparison.OrdinalIgnoreCase));
            bool isApiVulkan = peInfo.Modules.Any(s => s.StartsWith("vulkan-1", StringComparison.OrdinalIgnoreCase));

            if (isApiD3D9 && isApiDXGI)
            {
                isApiD3D9 = false;                 // Prefer DXGI over D3D9
            }
            if (isApiD3D8 && !isHeadless)
            {
                MessageBox.Show(this, "It looks like the target application uses Direct3D 8. You'll have to download an additional wrapper from 'https://github.com/crosire/d3d8to9/releases' which converts all API calls to Direct3D 9 in order to use ReShade.", "Warning", MessageBoxButton.OK, MessageBoxImage.Warning);
            }
            if (isApiDXGI && isApiVulkan)
            {
                isApiDXGI = false;                 // Prefer Vulkan over Direct3D 12
            }
            if (isApiOpenGL && (isApiD3D8 || isApiD3D9 || isApiDXGI || isApiVulkan))
            {
                isApiOpenGL = false;                 // Prefer Vulkan and Direct3D over OpenGL
            }

            Message.Text = "Which rendering API does " + targetName + " use?";

            ApiD3D9.IsChecked   = isApiD3D9;
            ApiDXGI.IsChecked   = isApiDXGI;
            ApiOpenGL.IsChecked = isApiOpenGL;
            ApiVulkan.IsChecked = isApiVulkan;
        }
Beispiel #5
0
		public static Resource CreateFromFile(string name, string fullPath, BitDepths bitDepth)
		{
			if ((string.IsNullOrWhiteSpace(fullPath)) || (!File.Exists(fullPath)))
				return null;

			var data = File.ReadAllBytes(fullPath);
			var peInfo = new PEInfo(data);
			var sha1 = new SHA1Managed();
			return new Resource
			{
				Name = name,
				FileType = peInfo.FileType,
				WriteTime = File.GetLastWriteTimeUtc(fullPath),
				BitDepth = bitDepth,
				Version = peInfo.Version,
				SHA1 = BitConverter.ToString(sha1.ComputeHash(data)).Replace("-", "").ToLower(),
				UncompressedData = data,
			};
		}
Beispiel #6
0
        [SecurityCritical] // Req'd on .NET 4.0
        private static unsafe IntPtr FindDebuggerRCThreadAddress(Info info)
        {
            var pid = GetCurrentProcessId();

            try
            {
                var peInfo = PEInfo.GetCLR();
                if (peInfo == null)
                {
                    return(IntPtr.Zero);
                }

                IntPtr sectionAddr;
                uint   sectionSize;
                if (!peInfo.FindSection(".data", out sectionAddr, out sectionSize))
                {
                    return(IntPtr.Zero);
                }

                // Try to find the Debugger instance location in the data section
                var p   = (byte *)sectionAddr;
                var end = (byte *)sectionAddr + sectionSize;
                for (; p + IntPtr.Size <= end; p += IntPtr.Size)
                {
                    var pDebugger = *(IntPtr *)p;
                    if (pDebugger == IntPtr.Zero)
                    {
                        continue;
                    }

                    try
                    {
                        // All allocations are pointer-size aligned
                        if (!PEInfo.IsAlignedPointer(pDebugger))
                        {
                            continue;
                        }

                        // Make sure pid is correct
                        var pid2 = *(uint *)((byte *)pDebugger + info.Debugger_pid);
                        if (pid != pid2)
                        {
                            continue;
                        }

                        var pDebuggerRCThread = *(IntPtr *)((byte *)pDebugger + info.Debugger_pDebuggerRCThread);

                        // All allocations are pointer-size aligned
                        if (!PEInfo.IsAlignedPointer(pDebuggerRCThread))
                        {
                            continue;
                        }

                        // Make sure it points back to Debugger
                        var pDebugger2 = *(IntPtr *)((byte *)pDebuggerRCThread + info.DebuggerRCThread_pDebugger);
                        if (pDebugger != pDebugger2)
                        {
                            continue;
                        }

                        return(pDebuggerRCThread);
                    }
                    catch
                    {
                    }
                }
            }
            catch
            {
            }

            return(IntPtr.Zero);
        }
Beispiel #7
0
		public static void Run(Config config)
		{
			if (((!File.Exists(config.X32StartFull)) && (!File.Exists(config.X64StartFull))) || (config.Output == null) || (config.Match == null))
				throw new ArgumentException("Invalid parameter");

			var files = GetFiles(config.X32Path).Concat(GetFiles(config.X64Path)).Distinct(StringComparer.OrdinalIgnoreCase).Where(file => config.IsMatch(file)).ToList();
			// Make sure entry points are found
			if (config.X32Start != null)
				files.Single(file => file.Equals(config.X32Start, StringComparison.OrdinalIgnoreCase));
			if (config.X64Start != null)
				files.Single(file => file.Equals(config.X64Start, StringComparison.OrdinalIgnoreCase));

			var loader = typeof(Program).Assembly.Location;
			var bytes = File.ReadAllBytes(loader);
			var loaderPeInfo = new PEInfo(bytes);

			if (config.X64Path == null)
				loaderPeInfo.CorFlags |= Native.IMAGE_COR20_HEADER_FLAGS.x32BitRequired;

			if (config.IsConsole)
				loaderPeInfo.IsConsole = true;

			File.WriteAllBytes(config.Output, bytes);

			using (var nr = new ResourceWriter(config.Output))
			{
				var startFile = config.X64StartFull ?? config.X32StartFull;
				nr.CopyResources(new PEInfo(startFile), new List<IntPtr> { Native.RT_ICON, Native.RT_GROUP_ICON, Native.RT_VERSION });

				var currentID = 1;
				foreach (var file in files)
				{
					var x32File = config.X32Path == null ? null : Path.Combine(config.X32Path, file);
					if ((x32File == null) || (x32File.Equals(loader, StringComparison.OrdinalIgnoreCase)) || (!File.Exists(x32File)))
						x32File = null;
					var x32Res = Resource.CreateFromFile(file, x32File, BitDepths.x32);

					var x64File = config.X64Path == null ? null : Path.Combine(config.X64Path, file);
					if ((x64File == null) || (x64File.Equals(loader, StringComparison.OrdinalIgnoreCase)) || (!File.Exists(x64File)))
						x64File = null;
					var x64Res = x64File == x32File ? x32Res : Resource.CreateFromFile(file, x64File, BitDepths.x64);

					if (Resource.DataMatch(x32Res, x64Res))
						x64Res = x32Res;

					if (x32Res == x64Res)
					{
						x32Res.BitDepth = BitDepths.Any;
						x64Res = null;
					}

					if (x32Res != null)
					{
						x32Res.ResourceID = ++currentID;
						nr.AddBinary(x32Res.ResourceID, x32Res.CompressedData);
						x32Res.CompressedData = null;
						config.Resources.Add(x32Res);
					}
					if (x64Res != null)
					{
						x64Res.ResourceID = ++currentID;
						nr.AddBinary(x64Res.ResourceID, x64Res.CompressedData);
						x64Res.CompressedData = null;
						config.Resources.Add(x64Res);
					}
				}

				nr.AddBinary(1, config.SerializedData);
			}
		}
        partial void BindEcmaAssemblyName(RuntimeAssemblyName refName, ref AssemblyBindResult result, ref Exception exception, ref Exception preferredException, ref bool foundMatch)
        {
            lock (s_ecmaLoadedAssemblies)
            {
                for (int i = 0; i < s_ecmaLoadedAssemblies.Count; i++)
                {
                    PEInfo info = s_ecmaLoadedAssemblies[i];
                    if (AssemblyNameMatches(refName, info.Name, ref preferredException))
                    {
                        if (foundMatch)
                        {
                            exception = new AmbiguousMatchException();
                            return;
                        }

                        result.EcmaMetadataReader = info.Reader;
                        foundMatch = result.EcmaMetadataReader != null;

                        // For failed matches, we will never be able to succeed, so return now
                        if (!foundMatch)
                        {
                            return;
                        }
                    }
                }

                if (!foundMatch)
                {
                    try
                    {
                        // Not found in already loaded list, attempt to source assembly from disk
                        foreach (string filePath in FilePathsForAssembly(refName))
                        {
                            FileStream ownedFileStream = null;
                            PEReader   ownedPEReader   = null;
                            try
                            {
                                if (!RuntimeAugments.FileExists(filePath))
                                {
                                    continue;
                                }

                                try
                                {
                                    ownedFileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
                                }
                                catch (System.IO.IOException)
                                {
                                    // Failure to open a file is not fundamentally an assembly load error, but it does indicate this file cannot be used
                                    continue;
                                }

                                ownedPEReader = new PEReader(ownedFileStream);
                                // FileStream ownership transferred to ownedPEReader
                                ownedFileStream = null;

                                if (!ownedPEReader.HasMetadata)
                                {
                                    continue;
                                }

                                MetadataReader reader = ownedPEReader.GetMetadataReader();
                                // Create AssemblyName from MetadataReader
                                RuntimeAssemblyName runtimeAssemblyName = reader.GetAssemblyDefinition().ToRuntimeAssemblyName(reader).CanonicalizePublicKeyToken();

                                // If assembly name doesn't match, it isn't the one we're looking for. Continue to look for more assemblies
                                if (!AssemblyNameMatches(refName, runtimeAssemblyName, ref preferredException))
                                {
                                    continue;
                                }

                                // This is the one we are looking for, add it to the list of loaded assemblies
                                PEInfo peinfo = new PEInfo(runtimeAssemblyName, reader, ownedPEReader);

                                s_ecmaLoadedAssemblies.Add(peinfo);

                                // At this point the PE reader is no longer owned by this code, but is owned by the s_ecmaLoadedAssemblies list
                                PEReader pe = ownedPEReader;
                                ownedPEReader = null;

                                ModuleList moduleList    = ModuleList.Instance;
                                ModuleInfo newModuleInfo = new EcmaModuleInfo(moduleList.SystemModule.Handle, pe, reader);
                                moduleList.RegisterModule(newModuleInfo);

                                foundMatch = true;
                                result.EcmaMetadataReader = peinfo.Reader;
                                break;
                            }
                            finally
                            {
                                if (ownedFileStream != null)
                                {
                                    ownedFileStream.Dispose();
                                }

                                if (ownedPEReader != null)
                                {
                                    ownedPEReader.Dispose();
                                }
                            }
                        }
                    }
                    catch (System.IO.IOException)
                    { }
                    catch (System.ArgumentException)
                    { }
                    catch (System.BadImageFormatException badImageFormat)
                    {
                        exception = badImageFormat;
                    }

                    // Cache missed lookups
                    if (!foundMatch)
                    {
                        PEInfo peinfo = new PEInfo(refName, null, null);
                        s_ecmaLoadedAssemblies.Add(peinfo);
                    }
                }
            }
        }
Beispiel #9
0
            [SecurityCritical] // Req'd on .NET 4.0
            private unsafe IntPtr FindAttacherThreadProc()
            {
                try
                {
                    var peInfo = PEInfo.GetCLR();
                    if (peInfo == null)
                    {
                        return(IntPtr.Zero);
                    }

                    IntPtr sectionAddr;
                    uint   sectionSize;
                    if (!peInfo.FindSection(".text", out sectionAddr, out sectionSize))
                    {
                        return(IntPtr.Zero);
                    }

                    var p     = (byte *)sectionAddr;
                    var start = p;
                    var end   = (byte *)sectionAddr + sectionSize;

                    if (IntPtr.Size == 4)
                    {
                        for (; p < end; p++)
                        {
                            // Find this code:
                            //	50+r				push reg
                            //	50+r				push reg
                            //	50+r				push reg
                            //	68 XX XX XX XX		push offset ThreadProc
                            //	50+r				push reg
                            //	50+r				push reg
                            //	FF 15 XX XX XX XX	call dword ptr [mem] // CreateThread()

                            var push = *p;
                            if (push < 0x50 || push > 0x57)
                            {
                                continue;
                            }
                            if (p[1] != push || p[2] != push || p[8] != push || p[9] != push)
                            {
                                continue;
                            }
                            if (p[3] != 0x68)
                            {
                                continue;
                            }
                            if (p[10] != 0xFF || p[11] != 0x15)
                            {
                                continue;
                            }

                            var threadProc = new IntPtr((void *)*(uint *)(p + 4));
                            if (!CheckThreadProc(start, end, threadProc))
                            {
                                continue;
                            }

                            return(threadProc);
                        }
                    }
                    else
                    {
                        for (; p < end; p++)
                        {
                            // Find this code:
                            //	45 33 C9				xor r9d,r9d
                            //	4C 8D 05 XX XX XX XX	lea r8,ThreadProc
                            //	33 D2					xor edx,edx
                            //	33 C9					xor ecx,ecx
                            //	FF 15 XX XX XX XX		call dword ptr [mem] // CreateThread()

                            if (*p != 0x45 && p[1] != 0x33 && p[2] != 0xC9)
                            {
                                continue;
                            }
                            if (p[3] != 0x4C && p[4] != 0x8D && p[5] != 0x05)
                            {
                                continue;
                            }
                            if (p[10] != 0x33 && p[11] != 0xD2)
                            {
                                continue;
                            }
                            if (p[12] != 0x33 && p[13] != 0xC9)
                            {
                                continue;
                            }
                            if (p[14] != 0xFF && p[15] != 0x15)
                            {
                                continue;
                            }

                            var threadProc = new IntPtr(p + 10 + *(int *)(p + 6));
                            if (!CheckThreadProc(start, end, threadProc))
                            {
                                continue;
                            }

                            return(threadProc);
                        }
                    }
                }
                catch
                {
                }

                return(IntPtr.Zero);
            }
Beispiel #10
0
            [SecurityCritical] // Req'd on .NET 4.0
            private static unsafe IntPtr FindThreadingModeAddress()
            {
                try
                {
                    // Find this code in clr!ProfilingAPIAttachServer::ExecutePipeRequests()
                    //	83 3D XX XX XX XX 02	cmp dword ptr [mem],2
                    //	74 / 0F 84 XX			je there
                    //	83 E8+r 00 / 85 C0+rr	sub reg,0 / test reg,reg
                    //	74 / 0F 84 XX			je there
                    //	48+r / FF C8+r			dec reg
                    //	74 / 0F 84 XX			je there
                    //	48+r / FF C8+r			dec reg

                    var peInfo = PEInfo.GetCLR();
                    if (peInfo == null)
                    {
                        return(IntPtr.Zero);
                    }

                    IntPtr sectionAddr;
                    uint   sectionSize;
                    if (!peInfo.FindSection(".text", out sectionAddr, out sectionSize))
                    {
                        return(IntPtr.Zero);
                    }

                    var ptr = (byte *)sectionAddr;
                    var end = (byte *)sectionAddr + sectionSize;
                    for (; ptr < end; ptr++)
                    {
                        IntPtr addr;

                        try
                        {
                            //	83 3D XX XX XX XX 02	cmp dword ptr [mem],2
                            var p = ptr;
                            if (*p != 0x83 || p[1] != 0x3D || p[6] != 2)
                            {
                                continue;
                            }
                            if (IntPtr.Size == 4)
                            {
                                addr = new IntPtr((void *)*(uint *)(p + 2));
                            }
                            else
                            {
                                addr = new IntPtr(p + 7 + *(int *)(p + 2));
                            }
                            if (!PEInfo.IsAligned(addr, 4))
                            {
                                continue;
                            }
                            if (!peInfo.IsValidImageAddress(addr))
                            {
                                continue;
                            }
                            p += 7;

                            // 1 = normal lazy thread creation. 2 = thread is always present
                            if (*(uint *)addr < 1 || *(uint *)addr > 2)
                            {
                                continue;
                            }
                            *(uint *)addr = *(uint *)addr;

                            //	74 / 0F 84 XX			je there
                            if (!NextJz(ref p))
                            {
                                continue;
                            }

                            //	83 E8+r 00 / 85 C0+rr	sub reg,0 / test reg,reg
                            SkipRex(ref p);
                            if (*p == 0x83 && p[2] == 0)
                            {
                                if ((uint)(p[1] - 0xE8) > 7)
                                {
                                    continue;
                                }
                                p += 3;
                            }
                            else if (*p == 0x85)
                            {
                                var reg = (p[1] >> 3) & 7;
                                var rm  = p[1] & 7;
                                if (reg != rm)
                                {
                                    continue;
                                }
                                p += 2;
                            }
                            else
                            {
                                continue;
                            }

                            //	74 / 0F 84 XX			je there
                            if (!NextJz(ref p))
                            {
                                continue;
                            }

                            //	48+r / FF C8+r			dec reg
                            if (!SkipDecReg(ref p))
                            {
                                continue;
                            }

                            //	74 / 0F 84 XX			je there
                            if (!NextJz(ref p))
                            {
                                continue;
                            }

                            //	48+r / FF C8+r			dec reg
                            if (!SkipDecReg(ref p))
                            {
                                continue;
                            }

                            return(addr);
                        }
                        catch
                        {
                        }
                    }
                }
                catch
                {
                }
                return(IntPtr.Zero);
            }
Beispiel #11
0
            /// <summary>
            ///     This code tries to find the CLR 2.0 profiler status flag. It searches the whole
            ///     .text section for a certain instruction.
            /// </summary>
            /// <returns><c>true</c> if it was found, <c>false</c> otherwise</returns>
            private unsafe bool FindProfilerStatus()
            {
                // Record each hit here and pick the one with the most hits
                var addrCounts = new Dictionary <IntPtr, int>();

                try
                {
                    var peInfo = PEInfo.GetCLR();
                    if (peInfo == null)
                    {
                        return(false);
                    }

                    IntPtr sectionAddr;
                    uint   sectionSize;
                    if (!peInfo.FindSection(".text", out sectionAddr, out sectionSize))
                    {
                        return(false);
                    }

                    const int MAX_COUNTS = 50;
                    var       p          = (byte *)sectionAddr;
                    var       end        = (byte *)sectionAddr + sectionSize;
                    for (; p < end; p++)
                    {
                        IntPtr addr;

                        // F6 05 XX XX XX XX 06	test byte ptr [mem],6
                        if (*p == 0xF6 && p[1] == 0x05 && p[6] == 0x06)
                        {
                            if (IntPtr.Size == 4)
                            {
                                addr = new IntPtr((void *)*(uint *)(p + 2));
                            }
                            else
                            {
                                addr = new IntPtr(p + 7 + *(int *)(p + 2));
                            }
                        }
                        else
                        {
                            continue;
                        }

                        if (!PEInfo.IsAligned(addr, 4))
                        {
                            continue;
                        }
                        if (!peInfo.IsValidImageAddress(addr, 4))
                        {
                            continue;
                        }

                        try
                        {
                            *(uint *)addr = *(uint *)addr;
                        }
                        catch
                        {
                            continue;
                        }

                        var count = 0;
                        addrCounts.TryGetValue(addr, out count);
                        count++;
                        addrCounts[addr] = count;
                        if (count >= MAX_COUNTS)
                        {
                            break;
                        }
                    }
                }
                catch
                {
                }
                var foundAddr = GetMax(addrCounts, 5);

                if (foundAddr == IntPtr.Zero)
                {
                    return(false);
                }

                profilerStatusFlag = foundAddr;
                return(true);
            }
Beispiel #12
0
            [SecurityCritical] // Req'd on .NET 4.0
            private unsafe bool FindProfilerControlBlock()
            {
                // Record each hit here and pick the one with the most hits
                var addrCounts = new Dictionary <IntPtr, int>();

                try
                {
                    var peInfo = PEInfo.GetCLR();
                    if (peInfo == null)
                    {
                        return(false);
                    }

                    IntPtr sectionAddr;
                    uint   sectionSize;
                    if (!peInfo.FindSection(".text", out sectionAddr, out sectionSize))
                    {
                        return(false);
                    }

                    const int MAX_COUNTS = 50;
                    var       p          = (byte *)sectionAddr;
                    var       end        = (byte *)sectionAddr + sectionSize;
                    for (; p < end; p++)
                    {
                        IntPtr addr;

                        // A1 xx xx xx xx		mov eax,[mem]
                        // 83 F8 04				cmp eax,4
                        if (*p == 0xA1 && p[5] == 0x83 && p[6] == 0xF8 && p[7] == 0x04)
                        {
                            if (IntPtr.Size == 4)
                            {
                                addr = new IntPtr((void *)*(uint *)(p + 1));
                            }
                            else
                            {
                                addr = new IntPtr(p + 5 + *(int *)(p + 1));
                            }
                        }
                        // 8B 05 xx xx xx xx	mov eax,[mem]
                        // 83 F8 04				cmp eax,4
                        else if (*p == 0x8B && p[1] == 0x05 && p[6] == 0x83 && p[7] == 0xF8 && p[8] == 0x04)
                        {
                            if (IntPtr.Size == 4)
                            {
                                addr = new IntPtr((void *)*(uint *)(p + 2));
                            }
                            else
                            {
                                addr = new IntPtr(p + 6 + *(int *)(p + 2));
                            }
                        }
                        // 83 3D XX XX XX XX 04	cmp dword ptr [mem],4
                        else if (*p == 0x83 && p[1] == 0x3D && p[6] == 0x04)
                        {
                            if (IntPtr.Size == 4)
                            {
                                addr = new IntPtr((void *)*(uint *)(p + 2));
                            }
                            else
                            {
                                addr = new IntPtr(p + 7 + *(int *)(p + 2));
                            }
                        }
                        else
                        {
                            continue;
                        }

                        if (!PEInfo.IsAligned(addr, 4))
                        {
                            continue;
                        }
                        if (!peInfo.IsValidImageAddress(addr, 4))
                        {
                            continue;
                        }

                        // Valid values are 0-4. 4 being attached.
                        try
                        {
                            if (*(uint *)addr > 4)
                            {
                                continue;
                            }
                            *(uint *)addr = *(uint *)addr;
                        }
                        catch
                        {
                            continue;
                        }

                        var count = 0;
                        addrCounts.TryGetValue(addr, out count);
                        count++;
                        addrCounts[addr] = count;
                        if (count >= MAX_COUNTS)
                        {
                            break;
                        }
                    }
                }
                catch
                {
                }
                var foundAddr = GetMax(addrCounts, 5);

                if (foundAddr == IntPtr.Zero)
                {
                    return(false);
                }

                profilerControlBlock = new IntPtr((byte *)foundAddr - (IntPtr.Size + 4));
                return(true);
            }