├── BlockNonMS-DLLs
    ├── BlockNonMS-DLLs.vcxproj.user
    ├── BlockNonMS-DLLs.cpp
    ├── BlockNonMS-DLLs.vcxproj.filters
    ├── BlockNonMS-DLLs.sln
    └── BlockNonMS-DLLs.vcxproj
└── README.md


/BlockNonMS-DLLs/BlockNonMS-DLLs.vcxproj.user:
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1 | <?xml version="1.0" encoding="utf-8"?>
2 | <Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
3 |   <PropertyGroup />
4 | </Project>


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/README.md:
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1 | # BlockNonMSModules
2 | Set the process mitigation policy for loading only Microsoft Modules , and block any userland 3rd party modules
3 | 
4 | ### Video 
5 | https://user-images.githubusercontent.com/123980007/236648262-0c22af96-7660-4810-a15d-0100f9c10875.mp4
6 | 
7 | 


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/BlockNonMS-DLLs/BlockNonMS-DLLs.cpp:
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 1 | #include <Windows.h>
 2 | #include <stdio.h>
 3 | 
 4 | 
 5 | BOOL BlockNonMSDlls() {
 6 |     // Define the policy
 7 |     PROCESS_MITIGATION_BINARY_SIGNATURE_POLICY signaturePolicy = {};
 8 |     signaturePolicy.MicrosoftSignedOnly = 1;
 9 |     signaturePolicy.MitigationOptIn = 1;
10 | 
11 |     // Set the process mitigation policy for loading only Microsoft DLLs
12 |     BOOL result = SetProcessMitigationPolicy(ProcessSignaturePolicy, &signaturePolicy, sizeof(signaturePolicy));
13 |     if (!result)
14 |     {
15 |         printf("Failed to set policy (%u)\n", GetLastError());
16 |         return FALSE;
17 |     }
18 |     return TRUE;
19 | }
20 | 
21 | int main()
22 | {
23 |     
24 |     if (!BlockNonMSDlls()) {
25 |         return -1;
26 |     }
27 |     
28 | 
29 |     // The policy is now applied to the current process
30 |     // Your Code here
31 |     // ...
32 |     //     
33 | 
34 |     while (true)
35 |     {
36 | 
37 |         Sleep(1000);
38 |     }
39 | 
40 |     return 0;
41 | }
42 | 


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


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/BlockNonMS-DLLs/BlockNonMS-DLLs.sln:
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 1 | 
 2 | Microsoft Visual Studio Solution File, Format Version 12.00
 3 | # Visual Studio Version 16
 4 | VisualStudioVersion = 16.0.32106.194
 5 | MinimumVisualStudioVersion = 10.0.40219.1
 6 | Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "BlockNonMS-DLLs", "BlockNonMS-DLLs.vcxproj", "{16CE4606-7BC2-4A70-B51F-2235E05C2824}"
 7 | EndProject
 8 | Global
 9 | 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
10 | 		Debug|x64 = Debug|x64
11 | 		Debug|x86 = Debug|x86
12 | 		Release|x64 = Release|x64
13 | 		Release|x86 = Release|x86
14 | 	EndGlobalSection
15 | 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
16 | 		{16CE4606-7BC2-4A70-B51F-2235E05C2824}.Debug|x64.ActiveCfg = Debug|x64
17 | 		{16CE4606-7BC2-4A70-B51F-2235E05C2824}.Debug|x64.Build.0 = Debug|x64
18 | 		{16CE4606-7BC2-4A70-B51F-2235E05C2824}.Debug|x86.ActiveCfg = Debug|Win32
19 | 		{16CE4606-7BC2-4A70-B51F-2235E05C2824}.Debug|x86.Build.0 = Debug|Win32
20 | 		{16CE4606-7BC2-4A70-B51F-2235E05C2824}.Release|x64.ActiveCfg = Release|x64
21 | 		{16CE4606-7BC2-4A70-B51F-2235E05C2824}.Release|x64.Build.0 = Release|x64
22 | 		{16CE4606-7BC2-4A70-B51F-2235E05C2824}.Release|x86.ActiveCfg = Release|Win32
23 | 		{16CE4606-7BC2-4A70-B51F-2235E05C2824}.Release|x86.Build.0 = Release|Win32
24 | 	EndGlobalSection
25 | 	GlobalSection(SolutionProperties) = preSolution
26 | 		HideSolutionNode = FALSE
27 | 	EndGlobalSection
28 | 	GlobalSection(ExtensibilityGlobals) = postSolution
29 | 		SolutionGuid = {01C80E10-43DD-437C-B2CE-F013DC1972EE}
30 | 	EndGlobalSection
31 | EndGlobal
32 | 


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/BlockNonMS-DLLs/BlockNonMS-DLLs.vcxproj:
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  1 | <?xml version="1.0" encoding="utf-8"?>
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  3 |   <ItemGroup Label="ProjectConfigurations">
  4 |     <ProjectConfiguration Include="Debug|Win32">
  5 |       <Configuration>Debug</Configuration>
  6 |       <Platform>Win32</Platform>
  7 |     </ProjectConfiguration>
  8 |     <ProjectConfiguration Include="Release|Win32">
  9 |       <Configuration>Release</Configuration>
 10 |       <Platform>Win32</Platform>
 11 |     </ProjectConfiguration>
 12 |     <ProjectConfiguration Include="Debug|x64">
 13 |       <Configuration>Debug</Configuration>
 14 |       <Platform>x64</Platform>
 15 |     </ProjectConfiguration>
 16 |     <ProjectConfiguration Include="Release|x64">
 17 |       <Configuration>Release</Configuration>
 18 |       <Platform>x64</Platform>
 19 |     </ProjectConfiguration>
 20 |   </ItemGroup>
 21 |   <PropertyGroup Label="Globals">
 22 |     <VCProjectVersion>16.0</VCProjectVersion>
 23 |     <Keyword>Win32Proj</Keyword>
 24 |     <ProjectGuid>{16ce4606-7bc2-4a70-b51f-2235e05c2824}</ProjectGuid>
 25 |     <RootNamespace>BlockNonMSDLLs</RootNamespace>
 26 |     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
 27 |   </PropertyGroup>
 28 |   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
 29 |   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
 30 |     <ConfigurationType>Application</ConfigurationType>
 31 |     <UseDebugLibraries>true</UseDebugLibraries>
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 33 |     <CharacterSet>Unicode</CharacterSet>
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 35 |   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
 36 |     <ConfigurationType>Application</ConfigurationType>
 37 |     <UseDebugLibraries>false</UseDebugLibraries>
 38 |     <PlatformToolset>v142</PlatformToolset>
 39 |     <WholeProgramOptimization>true</WholeProgramOptimization>
 40 |     <CharacterSet>Unicode</CharacterSet>
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 42 |   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
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 44 |     <UseDebugLibraries>true</UseDebugLibraries>
 45 |     <PlatformToolset>v142</PlatformToolset>
 46 |     <CharacterSet>Unicode</CharacterSet>
 47 |   </PropertyGroup>
 48 |   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
 49 |     <ConfigurationType>Application</ConfigurationType>
 50 |     <UseDebugLibraries>false</UseDebugLibraries>
 51 |     <PlatformToolset>v142</PlatformToolset>
 52 |     <WholeProgramOptimization>true</WholeProgramOptimization>
 53 |     <CharacterSet>Unicode</CharacterSet>
 54 |   </PropertyGroup>
 55 |   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
 56 |   <ImportGroup Label="ExtensionSettings">
 57 |   </ImportGroup>
 58 |   <ImportGroup Label="Shared">
 59 |   </ImportGroup>
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 62 |   </ImportGroup>
 63 |   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
 64 |     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
 65 |   </ImportGroup>
 66 |   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
 67 |     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
 68 |   </ImportGroup>
 69 |   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
 70 |     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
 71 |   </ImportGroup>
 72 |   <PropertyGroup Label="UserMacros" />
 73 |   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
 74 |     <LinkIncremental>true</LinkIncremental>
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 76 |   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
 77 |     <LinkIncremental>false</LinkIncremental>
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 83 |     <LinkIncremental>false</LinkIncremental>
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 85 |   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
 86 |     <ClCompile>
 87 |       <WarningLevel>Level3</WarningLevel>
 88 |       <SDLCheck>true</SDLCheck>
 89 |       <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
 90 |       <ConformanceMode>true</ConformanceMode>
 91 |     </ClCompile>
 92 |     <Link>
 93 |       <SubSystem>Console</SubSystem>
 94 |       <GenerateDebugInformation>true</GenerateDebugInformation>
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100 |       <FunctionLevelLinking>true</FunctionLevelLinking>
101 |       <IntrinsicFunctions>true</IntrinsicFunctions>
102 |       <SDLCheck>true</SDLCheck>
103 |       <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
104 |       <ConformanceMode>true</ConformanceMode>
105 |     </ClCompile>
106 |     <Link>
107 |       <SubSystem>Console</SubSystem>
108 |       <EnableCOMDATFolding>true</EnableCOMDATFolding>
109 |       <OptimizeReferences>true</OptimizeReferences>
110 |       <GenerateDebugInformation>true</GenerateDebugInformation>
111 |     </Link>
112 |   </ItemDefinitionGroup>
113 |   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
114 |     <ClCompile>
115 |       <WarningLevel>Level3</WarningLevel>
116 |       <SDLCheck>true</SDLCheck>
117 |       <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
118 |       <ConformanceMode>true</ConformanceMode>
119 |     </ClCompile>
120 |     <Link>
121 |       <SubSystem>Console</SubSystem>
122 |       <GenerateDebugInformation>true</GenerateDebugInformation>
123 |     </Link>
124 |   </ItemDefinitionGroup>
125 |   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
126 |     <ClCompile>
127 |       <WarningLevel>Level3</WarningLevel>
128 |       <FunctionLevelLinking>true</FunctionLevelLinking>
129 |       <IntrinsicFunctions>true</IntrinsicFunctions>
130 |       <SDLCheck>true</SDLCheck>
131 |       <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
132 |       <ConformanceMode>true</ConformanceMode>
133 |     </ClCompile>
134 |     <Link>
135 |       <SubSystem>Console</SubSystem>
136 |       <EnableCOMDATFolding>true</EnableCOMDATFolding>
137 |       <OptimizeReferences>true</OptimizeReferences>
138 |       <GenerateDebugInformation>true</GenerateDebugInformation>
139 |     </Link>
140 |   </ItemDefinitionGroup>
141 |   <ItemGroup>
142 |     <ClCompile Include="BlockNonMS-DLLs.cpp" />
143 |   </ItemGroup>
144 |   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
145 |   <ImportGroup Label="ExtensionTargets">
146 |   </ImportGroup>
147 | </Project>


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