├── ys.txt ├── images ├── CPP_Example.png ├── CPP_Syntax.png ├── IDA_Example_1.png ├── IDA_Example_2.png └── OUTPUT_Example.png ├── example.cpp ├── LICENSE ├── ImportlessApi.vcxproj.filters ├── ImportlessApi.sln ├── README.md ├── .gitattributes ├── ImportlessApi.vcxproj ├── .gitignore └── ImportlessApi.hpp /ys.txt: -------------------------------------------------------------------------------- 1 | yoavshah importless api -------------------------------------------------------------------------------- /images/CPP_Example.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/yoavshah/ImportlessApi/HEAD/images/CPP_Example.png -------------------------------------------------------------------------------- /images/CPP_Syntax.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/yoavshah/ImportlessApi/HEAD/images/CPP_Syntax.png -------------------------------------------------------------------------------- /images/IDA_Example_1.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/yoavshah/ImportlessApi/HEAD/images/IDA_Example_1.png -------------------------------------------------------------------------------- /images/IDA_Example_2.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/yoavshah/ImportlessApi/HEAD/images/IDA_Example_2.png -------------------------------------------------------------------------------- /images/OUTPUT_Example.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/yoavshah/ImportlessApi/HEAD/images/OUTPUT_Example.png -------------------------------------------------------------------------------- /example.cpp: -------------------------------------------------------------------------------- 1 | #include "ImportlessApi.hpp" 2 | #include 3 | 4 | 5 | /* Example of a code using the API. */ 6 | int main() 7 | { 8 | //HANDLE hFile = IMPORTLESS_API(CreateFile)(L"ys.txt", GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); 9 | //if (hFile == INVALID_HANDLE_VALUE) 10 | //{ 11 | // printf("Error\n"); 12 | // return 1; 13 | //} 14 | 15 | //DWORD dwWritten; 16 | //IMPORTLESS_API(WriteFile)(hFile, "yoavshah importless api", strlen("yoavshah importless api"), &dwWritten, NULL); 17 | 18 | 19 | //IMPORTLESS_API(CloseHandle)(hFile); 20 | 21 | 22 | HMODULE x = IMPORTLESS_API(LoadLibraryA)("user32.dll"); 23 | printf("%x\n", x); 24 | 25 | 26 | 27 | IMPORTLESS_API_WITH_MODULE(MessageBoxA, x)(0, "", "", 0); 28 | 29 | // For NTDLL.dll exports 30 | //IMPORTLESS_API_STR("MessageBoxA", decltype(&MessageBoxA))(0, "YS", "YS", 0); 31 | 32 | //IMPORTLESS_API(MessageBoxA)(0, "YS", "YS", 0); 33 | 34 | 35 | 36 | 37 | return 0; 38 | } -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2022 Yoav Shaharabani 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /ImportlessApi.vcxproj.filters: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | {4FC737F1-C7A5-4376-A066-2A32D752A2FF} 6 | cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx 7 | 8 | 9 | {93995380-89BD-4b04-88EB-625FBE52EBFB} 10 | h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd 11 | 12 | 13 | {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} 14 | rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms 15 | 16 | 17 | 18 | 19 | Header Files 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | Source Files 28 | 29 | 30 | -------------------------------------------------------------------------------- /ImportlessApi.sln: -------------------------------------------------------------------------------- 1 | 2 | Microsoft Visual Studio Solution File, Format Version 12.00 3 | # Visual Studio Version 17 4 | VisualStudioVersion = 17.0.32112.339 5 | MinimumVisualStudioVersion = 10.0.40219.1 6 | Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ImportlessApi", "ImportlessApi.vcxproj", "{5302C8AA-3112-465C-8FEF-58D09FB7C03A}" 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 | {5302C8AA-3112-465C-8FEF-58D09FB7C03A}.Debug|x64.ActiveCfg = Debug|x64 17 | {5302C8AA-3112-465C-8FEF-58D09FB7C03A}.Debug|x64.Build.0 = Debug|x64 18 | {5302C8AA-3112-465C-8FEF-58D09FB7C03A}.Debug|x86.ActiveCfg = Debug|Win32 19 | {5302C8AA-3112-465C-8FEF-58D09FB7C03A}.Debug|x86.Build.0 = Debug|Win32 20 | {5302C8AA-3112-465C-8FEF-58D09FB7C03A}.Release|x64.ActiveCfg = Release|x64 21 | {5302C8AA-3112-465C-8FEF-58D09FB7C03A}.Release|x64.Build.0 = Release|x64 22 | {5302C8AA-3112-465C-8FEF-58D09FB7C03A}.Release|x86.ActiveCfg = Release|Win32 23 | {5302C8AA-3112-465C-8FEF-58D09FB7C03A}.Release|x86.Build.0 = Release|Win32 24 | EndGlobalSection 25 | GlobalSection(SolutionProperties) = preSolution 26 | HideSolutionNode = FALSE 27 | EndGlobalSection 28 | GlobalSection(ExtensibilityGlobals) = postSolution 29 | SolutionGuid = {6CD9F91B-4C76-44E1-BE98-BE29B2ED83D4} 30 | EndGlobalSection 31 | EndGlobal 32 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | 2 | # ImportlessApi 3 | 4 | ## ImportlessApi is a project that allows you to easly use real time function resolving using a compile time hashing calculation. 5 | 6 | ## Usage 7 | 8 | * include "ImportlessApi.hpp" 9 | 10 | * Use it with any imported function (any DLL that is already loaded to the process linked list) 11 | 12 | * Handle hFile = IMPORTLESS_API(CreateFile)(Parameters); 13 | 14 | ## Advanced Usage 15 | 16 | * defining IMPORTLESSAPI_CONSISTENT_COMPILATION before including the library force that the hash calculation will be constant across compilations 17 | 18 | * defining IMPORTLESSAPI_REMOVE_INLINE will force the search function ot not be inlined. 19 | 20 | * You can use IMPORTLESS_API(func_name) for functions you have symbols for, like CreateFile, LoadLibrary, etc. 21 | 22 | * You can use IMPORTLESS_API("func_name", func_type) for function you do not have symbols for, like NtQuerySystemInformation and more. 23 | 24 | 25 | ## Examples 26 | 27 | * Example of CPP syntax 28 | 29 | 30 | * Example of CPP full example 31 | 32 | 33 | * Example's output 34 | 35 | 36 | * IDA output (main function) 37 | 38 | 39 | * IDA output (resolve function) 40 | 41 | 42 | 43 | ## Remarks 44 | 45 | * The library can handle using macro functions, like LoadLibrary instead of LoadLibraryA, and it will resolve it automaticly based on the macro value. 46 | 47 | * There probally should not be hash collisions, but in case 2 functions resolve into the same hash, try changing the hash function. 48 | 49 | 50 | ## Credits 51 | * Real thanks for JustasMasiulis for helping me understand and learn about advanced macro techniques with his [project](https://github.com/JustasMasiulis/lazy_importer/) 52 | 53 | 54 | 55 | 56 | 57 | -------------------------------------------------------------------------------- /.gitattributes: -------------------------------------------------------------------------------- 1 | ############################################################################### 2 | # Set default behavior to automatically normalize line endings. 3 | ############################################################################### 4 | * text=auto 5 | 6 | ############################################################################### 7 | # Set default behavior for command prompt diff. 8 | # 9 | # This is need for earlier builds of msysgit that does not have it on by 10 | # default for csharp files. 11 | # Note: This is only used by command line 12 | ############################################################################### 13 | #*.cs diff=csharp 14 | 15 | ############################################################################### 16 | # Set the merge driver for project and solution files 17 | # 18 | # Merging from the command prompt will add diff markers to the files if there 19 | # are conflicts (Merging from VS is not affected by the settings below, in VS 20 | # the diff markers are never inserted). Diff markers may cause the following 21 | # file extensions to fail to load in VS. An alternative would be to treat 22 | # these files as binary and thus will always conflict and require user 23 | # intervention with every merge. To do so, just uncomment the entries below 24 | ############################################################################### 25 | #*.sln merge=binary 26 | #*.csproj merge=binary 27 | #*.vbproj merge=binary 28 | #*.vcxproj merge=binary 29 | #*.vcproj merge=binary 30 | #*.dbproj merge=binary 31 | #*.fsproj merge=binary 32 | #*.lsproj merge=binary 33 | #*.wixproj merge=binary 34 | #*.modelproj merge=binary 35 | #*.sqlproj merge=binary 36 | #*.wwaproj merge=binary 37 | 38 | ############################################################################### 39 | # behavior for image files 40 | # 41 | # image files are treated as binary by default. 42 | ############################################################################### 43 | #*.jpg binary 44 | #*.png binary 45 | #*.gif binary 46 | 47 | ############################################################################### 48 | # diff behavior for common document formats 49 | # 50 | # Convert binary document formats to text before diffing them. This feature 51 | # is only available from the command line. Turn it on by uncommenting the 52 | # entries below. 53 | ############################################################################### 54 | #*.doc diff=astextplain 55 | #*.DOC diff=astextplain 56 | #*.docx diff=astextplain 57 | #*.DOCX diff=astextplain 58 | #*.dot diff=astextplain 59 | #*.DOT diff=astextplain 60 | #*.pdf diff=astextplain 61 | #*.PDF diff=astextplain 62 | #*.rtf diff=astextplain 63 | #*.RTF diff=astextplain 64 | -------------------------------------------------------------------------------- /ImportlessApi.vcxproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | Debug 6 | Win32 7 | 8 | 9 | Release 10 | Win32 11 | 12 | 13 | Debug 14 | x64 15 | 16 | 17 | Release 18 | x64 19 | 20 | 21 | 22 | 16.0 23 | Win32Proj 24 | {5302c8aa-3112-465c-8fef-58d09fb7c03a} 25 | ImportlessApi 26 | 10.0 27 | 28 | 29 | 30 | Application 31 | true 32 | v143 33 | Unicode 34 | 35 | 36 | Application 37 | false 38 | v143 39 | true 40 | Unicode 41 | 42 | 43 | Application 44 | true 45 | v143 46 | Unicode 47 | 48 | 49 | Application 50 | false 51 | v143 52 | true 53 | Unicode 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | true 75 | 76 | 77 | false 78 | 79 | 80 | true 81 | 82 | 83 | false 84 | 85 | 86 | 87 | Level3 88 | true 89 | WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions) 90 | true 91 | 92 | 93 | Console 94 | true 95 | 96 | 97 | 98 | 99 | Level3 100 | true 101 | true 102 | true 103 | WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions) 104 | true 105 | 106 | 107 | Console 108 | true 109 | true 110 | true 111 | 112 | 113 | 114 | 115 | Level3 116 | true 117 | _DEBUG;_CONSOLE;%(PreprocessorDefinitions) 118 | true 119 | 120 | 121 | Console 122 | true 123 | 124 | 125 | 126 | 127 | Level3 128 | true 129 | true 130 | true 131 | NDEBUG;_CONSOLE;%(PreprocessorDefinitions) 132 | true 133 | 134 | 135 | Console 136 | true 137 | true 138 | true 139 | 140 | 141 | 142 | 143 | 144 | 145 | 146 | 147 | 148 | 149 | 150 | 151 | 152 | 153 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | ## Ignore Visual Studio temporary files, build results, and 2 | ## files generated by popular Visual Studio add-ons. 3 | ## 4 | ## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore 5 | 6 | # User-specific files 7 | *.rsuser 8 | *.suo 9 | *.user 10 | *.userosscache 11 | *.sln.docstates 12 | *.bak 13 | # User-specific files (MonoDevelop/Xamarin Studio) 14 | *.userprefs 15 | 16 | # Mono auto generated files 17 | mono_crash.* 18 | 19 | # Build results 20 | [Dd]ebug/ 21 | [Dd]ebugPublic/ 22 | [Rr]elease/ 23 | [Rr]eleases/ 24 | x64/ 25 | x86/ 26 | [Ww][Ii][Nn]32/ 27 | [Aa][Rr][Mm]/ 28 | [Aa][Rr][Mm]64/ 29 | bld/ 30 | [Bb]in/ 31 | [Oo]bj/ 32 | [Oo]ut/ 33 | [Ll]og/ 34 | [Ll]ogs/ 35 | 36 | # Visual Studio 2015/2017 cache/options directory 37 | .vs/ 38 | # Uncomment if you have tasks that create the project's static files in wwwroot 39 | #wwwroot/ 40 | 41 | # Visual Studio 2017 auto generated files 42 | Generated\ Files/ 43 | 44 | # MSTest test Results 45 | [Tt]est[Rr]esult*/ 46 | [Bb]uild[Ll]og.* 47 | 48 | # NUnit 49 | *.VisualState.xml 50 | TestResult.xml 51 | nunit-*.xml 52 | 53 | # Build Results of an ATL Project 54 | [Dd]ebugPS/ 55 | [Rr]eleasePS/ 56 | dlldata.c 57 | 58 | # Benchmark Results 59 | BenchmarkDotNet.Artifacts/ 60 | 61 | # .NET Core 62 | project.lock.json 63 | project.fragment.lock.json 64 | artifacts/ 65 | 66 | # ASP.NET Scaffolding 67 | ScaffoldingReadMe.txt 68 | 69 | # StyleCop 70 | StyleCopReport.xml 71 | 72 | # Files built by Visual Studio 73 | *_i.c 74 | *_p.c 75 | *_h.h 76 | *.ilk 77 | *.meta 78 | *.obj 79 | *.iobj 80 | *.pch 81 | *.pdb 82 | *.ipdb 83 | *.pgc 84 | *.pgd 85 | *.rsp 86 | *.sbr 87 | *.tlb 88 | *.tli 89 | *.tlh 90 | *.tmp 91 | *.tmp_proj 92 | *_wpftmp.csproj 93 | *.log 94 | *.vspscc 95 | *.vssscc 96 | .builds 97 | *.pidb 98 | *.svclog 99 | *.scc 100 | 101 | # Chutzpah Test files 102 | _Chutzpah* 103 | 104 | # Visual C++ cache files 105 | ipch/ 106 | *.aps 107 | *.ncb 108 | *.opendb 109 | *.opensdf 110 | *.sdf 111 | *.cachefile 112 | *.VC.db 113 | *.VC.VC.opendb 114 | 115 | # Visual Studio profiler 116 | *.psess 117 | *.vsp 118 | *.vspx 119 | *.sap 120 | 121 | # Visual Studio Trace Files 122 | *.e2e 123 | 124 | # TFS 2012 Local Workspace 125 | $tf/ 126 | 127 | # Guidance Automation Toolkit 128 | *.gpState 129 | 130 | # ReSharper is a .NET coding add-in 131 | _ReSharper*/ 132 | *.[Rr]e[Ss]harper 133 | *.DotSettings.user 134 | 135 | # TeamCity is a build add-in 136 | _TeamCity* 137 | 138 | # DotCover is a Code Coverage Tool 139 | *.dotCover 140 | 141 | # AxoCover is a Code Coverage Tool 142 | .axoCover/* 143 | !.axoCover/settings.json 144 | 145 | # Coverlet is a free, cross platform Code Coverage Tool 146 | coverage*.json 147 | coverage*.xml 148 | coverage*.info 149 | 150 | # Visual Studio code coverage results 151 | *.coverage 152 | *.coveragexml 153 | 154 | # NCrunch 155 | _NCrunch_* 156 | .*crunch*.local.xml 157 | nCrunchTemp_* 158 | 159 | # MightyMoose 160 | *.mm.* 161 | AutoTest.Net/ 162 | 163 | # Web workbench (sass) 164 | .sass-cache/ 165 | 166 | # Installshield output folder 167 | [Ee]xpress/ 168 | 169 | # DocProject is a documentation generator add-in 170 | DocProject/buildhelp/ 171 | DocProject/Help/*.HxT 172 | DocProject/Help/*.HxC 173 | DocProject/Help/*.hhc 174 | DocProject/Help/*.hhk 175 | DocProject/Help/*.hhp 176 | DocProject/Help/Html2 177 | DocProject/Help/html 178 | 179 | # Click-Once directory 180 | publish/ 181 | 182 | # Publish Web Output 183 | *.[Pp]ublish.xml 184 | *.azurePubxml 185 | # Note: Comment the next line if you want to checkin your web deploy settings, 186 | # but database connection strings (with potential passwords) will be unencrypted 187 | *.pubxml 188 | *.publishproj 189 | 190 | # Microsoft Azure Web App publish settings. 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Backup files are not needed, 256 | # because we have git ;-) 257 | _UpgradeReport_Files/ 258 | Backup*/ 259 | UpgradeLog*.XML 260 | UpgradeLog*.htm 261 | ServiceFabricBackup/ 262 | *.rptproj.bak 263 | 264 | # SQL Server files 265 | *.mdf 266 | *.ldf 267 | *.ndf 268 | 269 | # Business Intelligence projects 270 | *.rdl.data 271 | *.bim.layout 272 | *.bim_*.settings 273 | *.rptproj.rsuser 274 | *- [Bb]ackup.rdl 275 | *- [Bb]ackup ([0-9]).rdl 276 | *- [Bb]ackup ([0-9][0-9]).rdl 277 | 278 | # Microsoft Fakes 279 | FakesAssemblies/ 280 | 281 | # GhostDoc plugin setting file 282 | *.GhostDoc.xml 283 | 284 | # Node.js Tools for Visual Studio 285 | .ntvs_analysis.dat 286 | node_modules/ 287 | 288 | # Visual Studio 6 build log 289 | *.plg 290 | 291 | # Visual Studio 6 workspace options file 292 | *.opt 293 | 294 | # Visual Studio 6 auto-generated workspace file (contains which files were open etc.) 295 | *.vbw 296 | 297 | # Visual Studio LightSwitch build output 298 | **/*.HTMLClient/GeneratedArtifacts 299 | **/*.DesktopClient/GeneratedArtifacts 300 | **/*.DesktopClient/ModelManifest.xml 301 | **/*.Server/GeneratedArtifacts 302 | **/*.Server/ModelManifest.xml 303 | _Pvt_Extensions 304 | 305 | # Paket dependency manager 306 | .paket/paket.exe 307 | paket-files/ 308 | 309 | # FAKE - F# Make 310 | .fake/ 311 | 312 | # CodeRush personal settings 313 | .cr/personal 314 | 315 | # Python Tools for Visual Studio (PTVS) 316 | __pycache__/ 317 | *.pyc 318 | 319 | # Cake - Uncomment if you are using it 320 | # tools/** 321 | # !tools/packages.config 322 | 323 | # Tabs Studio 324 | *.tss 325 | 326 | # Telerik's JustMock configuration file 327 | *.jmconfig 328 | 329 | # BizTalk build output 330 | *.btp.cs 331 | *.btm.cs 332 | *.odx.cs 333 | *.xsd.cs 334 | 335 | # OpenCover UI analysis results 336 | OpenCover/ 337 | 338 | # Azure Stream Analytics local run output 339 | ASALocalRun/ 340 | 341 | # MSBuild Binary and Structured Log 342 | *.binlog 343 | 344 | # NVidia Nsight GPU debugger configuration file 345 | *.nvuser 346 | 347 | # MFractors (Xamarin productivity tool) working folder 348 | .mfractor/ 349 | 350 | # Local History for Visual Studio 351 | .localhistory/ 352 | 353 | # BeatPulse healthcheck temp database 354 | healthchecksdb 355 | 356 | # Backup folder for Package Reference Convert tool in Visual Studio 2017 357 | MigrationBackup/ 358 | 359 | # Ionide (cross platform F# VS Code tools) working folder 360 | .ionide/ 361 | 362 | # Fody - auto-generated XML schema 363 | FodyWeavers.xsd -------------------------------------------------------------------------------- /ImportlessApi.hpp: -------------------------------------------------------------------------------- 1 | /* 2 | MIT License 3 | 4 | Copyright (c) 2022 Yoav Shaharabani 5 | 6 | Permission is hereby granted, free of charge, to any person obtaining a copy 7 | of this software and associated documentation files (the "Software"), to deal 8 | in the Software without restriction, including without limitation the rights 9 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 | copies of the Software, and to permit persons to whom the Software is 11 | furnished to do so, subject to the following conditions: 12 | 13 | The above copyright notice and this permission notice shall be included in all 14 | copies or substantial portions of the Software. 15 | 16 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 | SOFTWARE. 23 | */ 24 | 25 | #pragma once 26 | 27 | #include 28 | #include 29 | 30 | /* 31 | Define IMPORTLESSAPI_CONSISTENT_COMPILATION so each compilation the hash value will stay constant (Do not use DATE_AND_TIME) 32 | 33 | Define IMPORTLESSAPI_REMOVE_INLINE so all the search functions will be forced inline, not defining this works well when making a shellcode 34 | 35 | 36 | */ 37 | 38 | 39 | /* Convert definition to function name. CreateFile to CreateFileA or CreateFileW based on configurations. */ 40 | #define REAL_DEFINITION(x) #x 41 | 42 | #define IMPORTLESS_API_START_NUMBER 0x1928471f 43 | 44 | #ifndef IMPORTLESSAPI_CONSISTENT_COMPILATION 45 | #define DATE_AND_TIME __TIME__ __DATE__ 46 | #else 47 | #define DATE_AND_TIME "ImportlessApiConsistentCompilation" 48 | #endif 49 | 50 | 51 | #define TO_UNICODE_HELPER(x) L##x 52 | #define TO_UNICODE(x) TO_UNICODE_HELPER(x) 53 | #define DATE_AND_TIME_UNICODE TO_UNICODE(DATE_AND_TIME) 54 | 55 | 56 | #ifndef IMPORTLESSAPI_REMOVE_INLINE 57 | #define IMPORTLESSAPI_INLINED __forceinline 58 | #else 59 | #define IMPORTLESSAPI_INLINED 60 | #endif 61 | 62 | namespace importless_api 63 | { 64 | namespace win { 65 | struct LIST_ENTRY_T { 66 | LIST_ENTRY_T* Flink; 67 | LIST_ENTRY_T* Blink; 68 | }; 69 | 70 | struct UNICODE_STRING_T { 71 | unsigned short Length; 72 | unsigned short MaximumLength; 73 | wchar_t* Buffer; 74 | }; 75 | 76 | struct PEB_LDR_DATA_T { 77 | unsigned long Length; 78 | unsigned long Initialized; 79 | const char* SsHandle; 80 | LIST_ENTRY_T InMemoryOrderLinks; 81 | }; 82 | 83 | struct PEB_T { 84 | unsigned char Reserved1[2]; 85 | unsigned char BeingDebugged; 86 | unsigned char Reserved2[1]; 87 | const char* Reserved3[2]; 88 | PEB_LDR_DATA_T* Ldr; 89 | }; 90 | 91 | struct LDR_DATA_TABLE_ENTRY_T { 92 | LIST_ENTRY_T InLoadOrderLinks; 93 | LIST_ENTRY_T InMemoryOrderLinks; 94 | LIST_ENTRY_T InInitializationOrderLinks; 95 | char* DllBase; 96 | const char* EntryPoint; 97 | union { 98 | unsigned long SizeOfImage; 99 | const char* _dummy; 100 | }; 101 | UNICODE_STRING_T FullDllName; 102 | UNICODE_STRING_T BaseDllName; 103 | }; 104 | 105 | 106 | } 107 | 108 | /* 109 | Hash string with start value. 110 | Choosed the hash function based on "The Last Stage of Delerium. Win32 Assembly Components" 111 | */ 112 | constexpr UINT32 hash_str(const char* func_name, const UINT32 value) 113 | { 114 | 115 | UINT32 hash = value; 116 | for (;;) 117 | { 118 | char c = *func_name; 119 | func_name++; 120 | if (!c) 121 | return hash; 122 | 123 | hash = (((hash << 5) | (hash >> 27)) + c) & 0xFFFFFFFF; 124 | } 125 | } 126 | 127 | template class importless_api 128 | { 129 | 130 | private: 131 | /* Getting the PEB struct from register based on architecture. */ 132 | const win::PEB_T* peb() 133 | { 134 | #if defined(_M_X64) || defined(__amd64__) 135 | return reinterpret_cast(__readgsqword(0x60)); 136 | #elif defined(_M_IX86) || defined(__i386__) 137 | return reinterpret_cast(__readfsdword(0x30)); 138 | #elif defined(_M_ARM) || defined(__arm__) 139 | return *reinterpret_cast(_MoveFromCoprocessor(15, 0, 13, 0, 2) + 0x30); 140 | #elif defined(_M_ARM64) || defined(__aarch64__) 141 | return *reinterpret_cast(__getReg(18) + 0x60); 142 | #elif defined(_M_IA64) || defined(__ia64__) 143 | return *reinterpret_cast(static_cast(_rdteb()) + 0x60); 144 | #else 145 | #error Unsupported platform. 146 | #endif 147 | } 148 | 149 | 150 | 151 | 152 | public: 153 | 154 | IMPORTLESSAPI_INLINED importless_api() 155 | {} 156 | 157 | IMPORTLESSAPI_INLINED UINT32 get_hash() 158 | { 159 | return hash; 160 | } 161 | 162 | /* Iterates over the PEB and all exported functions to find function by hash. */ 163 | IMPORTLESSAPI_INLINED LPVOID get_function() 164 | { 165 | win::LDR_DATA_TABLE_ENTRY_T* curr_module = (win::LDR_DATA_TABLE_ENTRY_T*)peb()->Ldr->InMemoryOrderLinks.Flink; 166 | 167 | /* Iterate over loaded modules. */ 168 | while (curr_module->BaseDllName.Buffer != NULL) { 169 | char* hBase = curr_module->DllBase; 170 | 171 | 172 | IMAGE_DOS_HEADER* hImageDosHeader = (IMAGE_DOS_HEADER*)hBase; 173 | IMAGE_NT_HEADERS* hImageNtHeaders = (IMAGE_NT_HEADERS*)(hBase + hImageDosHeader->e_lfanew); 174 | 175 | /* If export table exists. */ 176 | if (hImageNtHeaders->OptionalHeader.DataDirectory[0].VirtualAddress != 0) 177 | { 178 | IMAGE_EXPORT_DIRECTORY* hImageExportDirectory = (IMAGE_EXPORT_DIRECTORY*)(hBase + hImageNtHeaders->OptionalHeader.DataDirectory[0].VirtualAddress); 179 | 180 | PDWORD pNamePointers = (PDWORD)(hBase + hImageExportDirectory->AddressOfNames); 181 | PWORD pOrdinalPointers = (PWORD)(hBase + hImageExportDirectory->AddressOfNameOrdinals); 182 | PDWORD pAddressesPointers = (PDWORD)(hBase + hImageExportDirectory->AddressOfFunctions); 183 | 184 | /* Iterate over functions and check their hash. */ 185 | for (size_t i = 0; i < hImageExportDirectory->NumberOfNames; ++i, ++pNamePointers, ++pOrdinalPointers) 186 | { 187 | UINT32 func_hash = hash_str(hBase + *pNamePointers, importless_api().get_hash()); 188 | if (func_hash == hash) 189 | { 190 | DWORD dwFuncRVA = pAddressesPointers[*pOrdinalPointers]; 191 | 192 | /* Return function address. */ 193 | return hBase + dwFuncRVA; 194 | } 195 | } 196 | } 197 | 198 | curr_module = (win::LDR_DATA_TABLE_ENTRY_T*)curr_module->InLoadOrderLinks.Flink; 199 | } 200 | 201 | return NULL; 202 | } 203 | 204 | /* Iterates over the PEB and all exported functions to find function by hash. */ 205 | IMPORTLESSAPI_INLINED LPVOID get_function(void* pBase) 206 | { 207 | 208 | char* hBase = reinterpret_cast(pBase); 209 | 210 | 211 | IMAGE_DOS_HEADER* hImageDosHeader = (IMAGE_DOS_HEADER*)hBase; 212 | IMAGE_NT_HEADERS* hImageNtHeaders = (IMAGE_NT_HEADERS*)(hBase + hImageDosHeader->e_lfanew); 213 | 214 | /* If export table exists. */ 215 | if (hImageNtHeaders->OptionalHeader.DataDirectory[0].VirtualAddress != 0) 216 | { 217 | IMAGE_EXPORT_DIRECTORY* hImageExportDirectory = (IMAGE_EXPORT_DIRECTORY*)(hBase + hImageNtHeaders->OptionalHeader.DataDirectory[0].VirtualAddress); 218 | 219 | PDWORD pNamePointers = (PDWORD)(hBase + hImageExportDirectory->AddressOfNames); 220 | PWORD pOrdinalPointers = (PWORD)(hBase + hImageExportDirectory->AddressOfNameOrdinals); 221 | PDWORD pAddressesPointers = (PDWORD)(hBase + hImageExportDirectory->AddressOfFunctions); 222 | 223 | /* Iterate over functions and check their hash. */ 224 | for (size_t i = 0; i < hImageExportDirectory->NumberOfNames; ++i, ++pNamePointers, ++pOrdinalPointers) 225 | { 226 | UINT32 func_hash = hash_str(hBase + *pNamePointers, importless_api().get_hash()); 227 | if (func_hash == hash) 228 | { 229 | DWORD dwFuncRVA = pAddressesPointers[*pOrdinalPointers]; 230 | 231 | /* Return function address. */ 232 | return hBase + dwFuncRVA; 233 | } 234 | } 235 | } 236 | } 237 | }; 238 | }; 239 | 240 | 241 | namespace importless_module 242 | { 243 | namespace win { 244 | struct LIST_ENTRY_T { 245 | LIST_ENTRY_T* Flink; 246 | LIST_ENTRY_T* Blink; 247 | }; 248 | 249 | struct UNICODE_STRING_T { 250 | unsigned short Length; 251 | unsigned short MaximumLength; 252 | wchar_t* Buffer; 253 | }; 254 | 255 | struct PEB_LDR_DATA_T { 256 | unsigned long Length; 257 | unsigned long Initialized; 258 | const char* SsHandle; 259 | LIST_ENTRY_T InMemoryOrderLinks; 260 | }; 261 | 262 | struct PEB_T { 263 | unsigned char Reserved1[2]; 264 | unsigned char BeingDebugged; 265 | unsigned char Reserved2[1]; 266 | const char* Reserved3[2]; 267 | PEB_LDR_DATA_T* Ldr; 268 | }; 269 | 270 | struct LDR_DATA_TABLE_ENTRY_T { 271 | LIST_ENTRY_T InLoadOrderLinks; 272 | LIST_ENTRY_T InMemoryOrderLinks; 273 | LIST_ENTRY_T InInitializationOrderLinks; 274 | char* DllBase; 275 | const char* EntryPoint; 276 | union { 277 | unsigned long SizeOfImage; 278 | const char* _dummy; 279 | }; 280 | UNICODE_STRING_T FullDllName; 281 | UNICODE_STRING_T BaseDllName; 282 | }; 283 | 284 | 285 | } 286 | 287 | /* 288 | Hash string with start value. 289 | Choosed the hash function based on "The Last Stage of Delerium. Win32 Assembly Components" 290 | */ 291 | constexpr UINT32 hash_str(const wchar_t* module_name, const UINT32 value) 292 | { 293 | 294 | UINT32 hash = value; 295 | for (;;) 296 | { 297 | wchar_t c = *module_name; 298 | if (c >= L'A' && c <= L'Z') 299 | { 300 | c = c - L'A' + L'a'; 301 | } 302 | 303 | module_name++; 304 | if (!c) 305 | return hash; 306 | 307 | hash = (((hash << 5) | (hash >> 27)) + c) & 0xFFFFFFFF; 308 | } 309 | } 310 | 311 | template class importless_module 312 | { 313 | 314 | private: 315 | /* Getting the PEB struct from register based on architecture. */ 316 | const win::PEB_T* peb() 317 | { 318 | #if defined(_M_X64) || defined(__amd64__) 319 | return reinterpret_cast(__readgsqword(0x60)); 320 | #elif defined(_M_IX86) || defined(__i386__) 321 | return reinterpret_cast(__readfsdword(0x30)); 322 | #elif defined(_M_ARM) || defined(__arm__) 323 | return *reinterpret_cast(_MoveFromCoprocessor(15, 0, 13, 0, 2) + 0x30); 324 | #elif defined(_M_ARM64) || defined(__aarch64__) 325 | return *reinterpret_cast(__getReg(18) + 0x60); 326 | #elif defined(_M_IA64) || defined(__ia64__) 327 | return *reinterpret_cast(static_cast(_rdteb()) + 0x60); 328 | #else 329 | #error Unsupported platform. 330 | #endif 331 | } 332 | 333 | 334 | public: 335 | 336 | IMPORTLESSAPI_INLINED importless_module() 337 | {} 338 | 339 | IMPORTLESSAPI_INLINED UINT32 get_hash() 340 | { 341 | return hash; 342 | } 343 | 344 | /* Iterates over the PEB and all exported functions to find function by hash. */ 345 | IMPORTLESSAPI_INLINED LPVOID get_base() 346 | { 347 | win::LDR_DATA_TABLE_ENTRY_T* curr_module = (win::LDR_DATA_TABLE_ENTRY_T*)peb()->Ldr->InMemoryOrderLinks.Flink; 348 | 349 | /* Iterate over loaded modules. */ 350 | while (curr_module->BaseDllName.Buffer != NULL) { 351 | char* hBase = curr_module->DllBase; 352 | 353 | UINT32 module_hash = hash_str(curr_module->BaseDllName.Buffer, importless_module().get_hash()); 354 | if (module_hash == hash) 355 | { 356 | /* Return module base. */ 357 | return hBase; 358 | } 359 | 360 | 361 | curr_module = (win::LDR_DATA_TABLE_ENTRY_T*)curr_module->InLoadOrderLinks.Flink; 362 | } 363 | 364 | return NULL; 365 | } 366 | 367 | 368 | }; 369 | 370 | }; 371 | 372 | /* 373 | Example usage: 374 | Handle hFile = IMPORTLESS_API(CreateFile)(Parameters); 375 | */ 376 | #define IMPORTLESS_API(func_name) static_cast(importless_api::importless_api().get_function()) 377 | 378 | #define IMPORTLESS_API_STR(func_name, t) static_cast(importless_api::importless_api().get_function()) 379 | 380 | #define IMPORTLESS_API_WITH_MODULE(func_name, base) static_cast(importless_api::importless_api().get_function(base)) 381 | 382 | #define IMPORTLESS_API_STR_WITH_BASE(func_name, base, t) static_cast(importless_api::importless_api().get_function(base)) 383 | 384 | 385 | 386 | #define IMPORTLESS_MODULE(module_name) importless_module::importless_module().get_base() 387 | 388 | --------------------------------------------------------------------------------