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‎SilentLoad.sln

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.11.35327.3
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SilentLoad", "SilentLoad\SilentLoad.vcxproj", "{A5D2F9C8-0DC2-4A2D-B72F-2FD5FF740043}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|x64 = Debug|x64
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Debug|x86 = Debug|x86
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Release|x64 = Release|x64
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Release|x86 = Release|x86
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{A5D2F9C8-0DC2-4A2D-B72F-2FD5FF740043}.Debug|x64.ActiveCfg = Debug|x64
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{A5D2F9C8-0DC2-4A2D-B72F-2FD5FF740043}.Debug|x64.Build.0 = Debug|x64
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{A5D2F9C8-0DC2-4A2D-B72F-2FD5FF740043}.Debug|x86.ActiveCfg = Debug|Win32
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{A5D2F9C8-0DC2-4A2D-B72F-2FD5FF740043}.Debug|x86.Build.0 = Debug|Win32
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{A5D2F9C8-0DC2-4A2D-B72F-2FD5FF740043}.Release|x64.ActiveCfg = Release|x64
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{A5D2F9C8-0DC2-4A2D-B72F-2FD5FF740043}.Release|x64.Build.0 = Release|x64
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{A5D2F9C8-0DC2-4A2D-B72F-2FD5FF740043}.Release|x86.ActiveCfg = Release|Win32
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{A5D2F9C8-0DC2-4A2D-B72F-2FD5FF740043}.Release|x86.Build.0 = Release|Win32
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {FB2054AB-CC9E-4B15-B438-B4E89375DCD1}
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EndGlobalSection
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EndGlobal

‎SilentLoad/SilentLoad.vcxproj

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<?xml version="1.0" encoding="utf-8"?>
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<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<ItemGroup Label="ProjectConfigurations">
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<ProjectConfiguration Include="Debug|Win32">
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<Configuration>Debug</Configuration>
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<Platform>Win32</Platform>
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</ProjectConfiguration>
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<ProjectConfiguration Include="Release|Win32">
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<Configuration>Release</Configuration>
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<Platform>Win32</Platform>
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</ProjectConfiguration>
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<ProjectConfiguration Include="Debug|x64">
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<Configuration>Debug</Configuration>
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<Platform>x64</Platform>
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</ProjectConfiguration>
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<ProjectConfiguration Include="Release|x64">
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<Configuration>Release</Configuration>
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<Platform>x64</Platform>
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</ProjectConfiguration>
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</ItemGroup>
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<PropertyGroup Label="Globals">
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<VCProjectVersion>17.0</VCProjectVersion>
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<Keyword>Win32Proj</Keyword>
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<ProjectGuid>{a5d2f9c8-0dc2-4a2d-b72f-2fd5ff740043}</ProjectGuid>
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<RootNamespace>SilentLoad</RootNamespace>
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<WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
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</PropertyGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>true</UseDebugLibraries>
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<PlatformToolset>v143</PlatformToolset>
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<CharacterSet>Unicode</CharacterSet>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>false</UseDebugLibraries>
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<PlatformToolset>v143</PlatformToolset>
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<WholeProgramOptimization>true</WholeProgramOptimization>
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<CharacterSet>Unicode</CharacterSet>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>true</UseDebugLibraries>
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<PlatformToolset>v143</PlatformToolset>
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<CharacterSet>Unicode</CharacterSet>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>false</UseDebugLibraries>
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<PlatformToolset>v143</PlatformToolset>
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<WholeProgramOptimization>true</WholeProgramOptimization>
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<CharacterSet>Unicode</CharacterSet>
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</PropertyGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
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<ImportGroup Label="ExtensionSettings">
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</ImportGroup>
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<ImportGroup Label="Shared">
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<PropertyGroup Label="UserMacros" />
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<SDLCheck>true</SDLCheck>
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<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<ConformanceMode>true</ConformanceMode>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<AdditionalDependencies>ntdll.lib;%(AdditionalDependencies)</AdditionalDependencies>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<FunctionLevelLinking>true</FunctionLevelLinking>
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<IntrinsicFunctions>true</IntrinsicFunctions>
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<SDLCheck>true</SDLCheck>
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<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<ConformanceMode>true</ConformanceMode>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<EnableCOMDATFolding>true</EnableCOMDATFolding>
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<OptimizeReferences>true</OptimizeReferences>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<AdditionalDependencies>ntdll.lib;%(AdditionalDependencies)</AdditionalDependencies>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<SDLCheck>true</SDLCheck>
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<PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<ConformanceMode>true</ConformanceMode>
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<LanguageStandard_C>stdc17</LanguageStandard_C>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<AdditionalDependencies>ntdll.lib;%(AdditionalDependencies)</AdditionalDependencies>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<FunctionLevelLinking>true</FunctionLevelLinking>
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<IntrinsicFunctions>true</IntrinsicFunctions>
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<SDLCheck>true</SDLCheck>
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<PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<ConformanceMode>true</ConformanceMode>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<EnableCOMDATFolding>true</EnableCOMDATFolding>
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<OptimizeReferences>true</OptimizeReferences>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<AdditionalDependencies>ntdll.lib;%(AdditionalDependencies)</AdditionalDependencies>
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</Link>
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</ItemDefinitionGroup>
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<ItemGroup>
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<ClCompile Include="main.cpp" />
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</ItemGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
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<ImportGroup Label="ExtensionTargets">
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</ImportGroup>
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</Project>

‎SilentLoad/SilentLoad.vcxproj.filters

+22
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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<ItemGroup>
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<Filter Include="Source Files">
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<UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
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<Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
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</Filter>
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<Filter Include="Header Files">
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<UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
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<Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
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</Filter>
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<Filter Include="Resource Files">
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<UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
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<Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
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</Filter>
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</ItemGroup>
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<ItemGroup>
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<ClCompile Include="main.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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</ItemGroup>
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</Project>

‎SilentLoad/main.cpp

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#include <Windows.h>
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#include <stdio.h>
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#include <winternl.h>
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#include <strsafe.h>
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#define SERVICE_NAME L"SilentLoad"
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#define DRIVER_PATH L"\\??\\C:\\Windows\\System32\\drivers\\SilentLoad.sys"
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typedef NTSTATUS(NTAPI* _NtLoadDriver)(PUNICODE_STRING DriverServiceName);
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static _NtLoadDriver NtLoadDriver = NULL;
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static bool GrantPrivilege(LPCTSTR privilege)
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{
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HANDLE Token;
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TOKEN_PRIVILEGES TokenPrivileges;
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LUID Luid;
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if (!LookupPrivilegeValueW(NULL, SE_LOAD_DRIVER_NAME, &Luid))
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return false;
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if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &Token))
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return false;
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TokenPrivileges = { 0 };
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TokenPrivileges.PrivilegeCount = 1;
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TokenPrivileges.Privileges[0].Luid = Luid;
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TokenPrivileges.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
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if (!AdjustTokenPrivileges(Token, FALSE, &TokenPrivileges, sizeof(TOKEN_PRIVILEGES), NULL, NULL)
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|| GetLastError() == ERROR_NOT_ALL_ASSIGNED)
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{
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CloseHandle(Token);
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return false;
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}
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CloseHandle(Token);
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return true;
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}
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static _NtLoadDriver ResolveNtLoadDriver()
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{
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HMODULE Handle;
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Handle = GetModuleHandleW(L"ntdll.dll");
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if (!Handle)
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return NULL;
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return (_NtLoadDriver)GetProcAddress(Handle, "NtLoadDriver");
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}
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static bool AddService(LPCWSTR ServiceName, LPCWSTR DriverPath)
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{
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HKEY ServicesKey;
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DWORD ImagePathLength;
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DWORD ServiceType;
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DWORD ServiceStartType;
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DWORD ServiceErrorControl;
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DWORD ServiceNameLength;
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if (!NT_SUCCESS(RegOpenKeyExW(HKEY_LOCAL_MACHINE, L"SYSTEM\\CurrentControlSet\\Services", 0, KEY_ALL_ACCESS, &ServicesKey)))
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goto Error;
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if (!NT_SUCCESS(RegCreateKeyW(ServicesKey, ServiceName, &ServicesKey)))
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goto Error;
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ImagePathLength = (wcslen(DriverPath) + 1) * sizeof(WCHAR);
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if (!NT_SUCCESS(RegSetValueExW(ServicesKey, L"ImagePath", 0, REG_EXPAND_SZ, (LPBYTE)DriverPath, ImagePathLength)))
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goto Error;
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ServiceType = SERVICE_KERNEL_DRIVER;
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if (!NT_SUCCESS(RegSetValueExW(ServicesKey, L"Type", 0, REG_DWORD, (LPBYTE)&ServiceType, sizeof(ServiceType))))
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goto Error;
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ServiceStartType = SERVICE_DEMAND_START;
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if (!NT_SUCCESS(RegSetValueExW(ServicesKey, L"Start", 0, REG_DWORD, (LPBYTE)&ServiceStartType, sizeof(ServiceStartType))))
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goto Error;
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ServiceErrorControl = SERVICE_ERROR_NORMAL;
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if (!NT_SUCCESS(RegSetValueExW(ServicesKey, L"ErrorControl", 0, REG_DWORD, (LPBYTE)&ServiceErrorControl, sizeof(ServiceErrorControl))))
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goto Error;
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ServiceNameLength = (wcslen(ServiceName) + 1) * sizeof(WCHAR);
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if (!NT_SUCCESS(RegSetValueExW(ServicesKey, L"DisplayName", 0, REG_SZ, (LPBYTE)ServiceName, ServiceNameLength)))
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goto Error;
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RegCloseKey(ServicesKey);
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90+
return true;
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Error:
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RegCloseKey(ServicesKey);
94+
95+
return false;
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}
97+
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static bool RemoveService(LPCWSTR ServiceName)
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{
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WCHAR RegistryPath[MAX_PATH];
101+
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StringCchPrintfW(RegistryPath, ARRAYSIZE(RegistryPath), L"SYSTEM\\CurrentControlSet\\Services\\%s", ServiceName);
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return NT_SUCCESS(RegDeleteTreeW(HKEY_LOCAL_MACHINE, RegistryPath));
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}
106+
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static bool LoadDriver(LPCWSTR ServiceName)
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{
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UNICODE_STRING DriverServiceName;
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WCHAR Buffer[MAX_PATH];
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NTSTATUS Status;
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StringCchPrintfW(Buffer, ARRAYSIZE(Buffer), L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\%s", ServiceName);
114+
RtlInitUnicodeString(&DriverServiceName, Buffer);
115+
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Status = NtLoadDriver(&DriverServiceName);
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if (Status == 0xC000010E)
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{
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printf("Driver already loaded\n");
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return true;
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}
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return NT_SUCCESS(Status);
124+
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}
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int main(int argc, char* argv[])
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{
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if (!GrantPrivilege(SE_LOAD_DRIVER_NAME))
130+
{
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printf("Failed to grant privilege\n");
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goto End;
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}
134+
135+
NtLoadDriver = ResolveNtLoadDriver();
136+
if (!NtLoadDriver)
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{
138+
printf("Failed to resolve NtLoadDriver\n");
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goto End;
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}
141+
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printf("NtLoadDriver: 0x%p\n", NtLoadDriver);
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if (!AddService(SERVICE_NAME, DRIVER_PATH))
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{
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printf("Failed to add service\n");
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goto End;
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}
149+
150+
if (!LoadDriver(SERVICE_NAME))
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{
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printf("Failed to load driver\n");
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goto End;
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}
155+
156+
157+
End:
158+
if (!RemoveService(SERVICE_NAME))
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printf("Failed to remove service\n");
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161+
return 0;
162+
}

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