├── .gitignore ├── AUTHORS ├── LICENSE ├── README.md └── windows_memory_extractor.cpp /.gitignore: -------------------------------------------------------------------------------- 1 | # Prerequisites 2 | *.d 3 | 4 | # Compiled Object files 5 | *.slo 6 | *.lo 7 | *.o 8 | *.obj 9 | 10 | # Precompiled Headers 11 | *.gch 12 | *.pch 13 | 14 | # Compiled Dynamic libraries 15 | *.so 16 | *.dylib 17 | *.dll 18 | 19 | # Fortran module files 20 | *.mod 21 | *.smod 22 | 23 | # Compiled Static libraries 24 | *.lai 25 | *.la 26 | *.a 27 | *.lib 28 | 29 | # Executables 30 | *.exe 31 | *.out 32 | *.app 33 | -------------------------------------------------------------------------------- /AUTHORS: -------------------------------------------------------------------------------- 1 | Pedro Fernández Álvarez -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Windows Memory Extractor 2 | Tool to extract contents from the memory of Windows systems. 3 | 4 | [![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0) 5 | 6 | ## Installation 7 | This tool is a portable application that does not need to be installed in order to be used. The steps to compile the application in a Windows system from the source code stored in this repository are listed below: 8 | 9 | * Download the [Visual Studio IDE](https://visualstudio.microsoft.com/) and install, at least, the *Desktop development with C++* features. 10 | * Install the [Boost C++ libraries](https://www.boost.org/), build the ones that need to be compiled, and configure the Visual Studio IDE to use them. The instructions to do this are described [here](https://www.boost.org/doc/libs/1_76_0/more/getting_started/windows.html). 11 | * Install the [vcpkg dependency manager](https://github.com/Microsoft/vcpkg/) following [these](https://github.com/Microsoft/vcpkg/#quick-start-windows) steps. 12 | * Install the [Crypto++ library](https://www.cryptopp.com/) using vcpkg, explained in the section *BUILDING WITH VCPKG* of the [Crypto++ installation documentation](https://github.com/weidai11/cryptopp/blob/master/Install.txt). 13 | 14 | After following these steps, all the application dependencies will be installed and the tool can be compiled using the Visual Studio IDE. 15 | 16 | ## Usage 17 | This tool is a command line application. In order to extract the non executable memory regions of a proccess whose PID is, for instance, 1234, the following command can be executed: 18 | 19 | ```bash 20 | .\WindowsMemoryExtractor_x64.exe --pid 1234 21 | ``` 22 | 23 | Instead of extracting only the non executable memory regions, you can indicate that you want to extract only memory regions whose protections match the ones you provide as a command line argument. To extract, for example, the memory regions whose protections are either PAGE_READONLY or PAGE_EXECUTE_READ from the process whose PID is 1234, execute the command below: 24 | 25 | ```bash 26 | .\WindowsMemoryExtractor_x64.exe --pid 1234 --protections "PAGE_READONLY PAGE_EXECUTE_READ" 27 | ``` 28 | 29 | The memory protections supported are PAGE_EXECUTE, PAGE_EXECUTE_READ, PAGE_EXECUTE_READWRITE, PAGE_EXECUTE_WRITECOPY, PAGE_READONLY, PAGE_READWRITE and PAGE_WRITECOPY. Their respective meanings can be checked [here](https://docs.microsoft.com/en-us/windows/win32/memory/memory-protection-constants). 30 | 31 | In addition, the tool allows you to specify a module of the process in order to extract only the memory regions of that module. The following command will extract the memory regions whose protections are either PAGE_READONLY or PAGE_EXECUTE_READ from the module *user32.dll* of the process whose PID is 1234: 32 | 33 | ```bash 34 | .\WindowsMemoryExtractor_x64.exe --pid 1234 --protections "PAGE_READONLY PAGE_EXECUTE_READ" --module user32.dll 35 | ``` 36 | 37 | By default, if a module is provided but no memory protections are indicated, all the memory regions of that module whose protections match the supported ones will be extracted. The tool also has the --join option, in order to obtain the solicited memory regions of a module in one file. Additionally, if the user wants to get the version information about the file corresponding to a module, there is the --file-version-info option. Finally, for additional help, execute the command below: 38 | 39 | ```bash 40 | .\WindowsMemoryExtractor_x64.exe --help 41 | ``` 42 | 43 | ## License 44 | 45 | Licensed under the [GNU GPLv3](LICENSE) license. 46 | -------------------------------------------------------------------------------- /windows_memory_extractor.cpp: -------------------------------------------------------------------------------- 1 | #define WIN32_LEAN_AND_MEAN 2 | #define __STDC_WANT_LIB_EXT1__ 1 3 | #include 4 | #include 5 | #include 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include 13 | #include 14 | #include 15 | #include 16 | #include 17 | #include 18 | #include 19 | #include 20 | #include 21 | #include 22 | #include 23 | #include 24 | #include 25 | #include 26 | #include 27 | #pragma comment( lib, "Version.lib" ) 28 | 29 | 30 | struct ArgumentManager { 31 | 32 | void validateArguments(int argc, char* argv[]) { 33 | 34 | namespace po = boost::program_options; 35 | std::string version = "v1.0.8"; 36 | po::options_description description("Windows memory extractor " + version + "\nUsage"); 37 | 38 | description.add_options() 39 | ("help,h", "Display this help message") 40 | ("file-version-info,i", "Retrieve version information about the file corresponding to a module") 41 | ("join,j", "Generate an additional .dmp file with the contents of the other .dmp files joined") 42 | ("module,m", po::value(), "Module of the process") 43 | ("output-directory,o", po::value(), "Directory where the output will be stored") 44 | ("pid,p", po::value()->required(), "Process ID") 45 | ("protections,s", po::value(), "Memory protections") 46 | ("version,v", "Version") 47 | ; 48 | 49 | po::variables_map vm; 50 | po::store(po::command_line_parser(argc, argv).options(description).run(), vm); 51 | 52 | if (vm.count("help")) { 53 | std::cout << description << std::endl; 54 | exit(0); 55 | } 56 | 57 | if (vm.count("version")) { 58 | std::cout << "Windows memory extractor " << version << std::endl; 59 | exit(0); 60 | } 61 | 62 | po::notify(vm); 63 | 64 | if (vm.count("module")) { 65 | std::string suppliedModule = vm["module"].as(); 66 | if (suppliedModule.length() > 255) { 67 | SetLastError(18); 68 | throw std::invalid_argument{ "The module name is too long" }; 69 | } 70 | else { 71 | module = suppliedModule; 72 | isModuleOptionSupplied = true; 73 | } 74 | } 75 | 76 | if (vm.count("join")) { 77 | isJoinOptionSupplied = true; 78 | if (!isModuleOptionSupplied) { 79 | // The --join option was included to work alongside the --module option 80 | // If the --join option is supplied without the --module option, the tool interprets that the user is asking for the contents of the main module 81 | isModuleOptionSupplied = true; 82 | } 83 | } 84 | 85 | if (vm.count("file-version-info")) { 86 | isFileVersionInfoOptionSupplied = true; 87 | if (!isModuleOptionSupplied) { 88 | // As with the --join option, the --file-version-info option is implemented to work alongside the --module option 89 | // If the --file-version-info option is supplied without the --module option, the tool interprets that the user is asking for the version information of the file corresponding to the main module 90 | isModuleOptionSupplied = true; 91 | } 92 | } 93 | 94 | if (vm.count("pid")) { 95 | pid = vm["pid"].as(); 96 | } 97 | 98 | if (vm.count("protections")) { 99 | validateProtections(vm["protections"].as()); 100 | } 101 | 102 | if (vm.count("output-directory")) { 103 | if (directoryExists(vm["output-directory"].as())) { 104 | outputDirectory = vm["output-directory"].as(); 105 | isOutputDirectoryOptionSupplied = true; 106 | } 107 | else { 108 | throw std::invalid_argument{ "The directory supplied does not exist" }; 109 | } 110 | } 111 | 112 | } 113 | 114 | int getPid() { 115 | return pid; 116 | } 117 | 118 | void setModule(std::string newModule) { 119 | module = newModule; 120 | } 121 | 122 | std::string& getModule() { 123 | return module; 124 | } 125 | 126 | std::vector& getProtections() { 127 | return protections; 128 | } 129 | 130 | std::string& getOutputDirectory() { 131 | return outputDirectory; 132 | } 133 | 134 | bool getIsModuleOptionSupplied() { 135 | return isModuleOptionSupplied; 136 | } 137 | 138 | bool getIsProtectionsOptionSupplied() { 139 | return isProtectionsOptionSupplied; 140 | } 141 | 142 | bool getIsJoinOptionSupplied() { 143 | return isJoinOptionSupplied; 144 | } 145 | 146 | bool getIsOutputDirectoryOptionSupplied() { 147 | return isOutputDirectoryOptionSupplied; 148 | } 149 | 150 | bool getIsFileVersionInfoOptionSupplied() { 151 | return isFileVersionInfoOptionSupplied; 152 | } 153 | 154 | private: 155 | 156 | void validateProtections(std::string suppliedProtectionsAsString) { 157 | std::vector supportedProtections{ 158 | "PAGE_EXECUTE", 159 | "PAGE_EXECUTE_READ", 160 | "PAGE_EXECUTE_READWRITE", 161 | "PAGE_EXECUTE_WRITECOPY", 162 | "PAGE_READONLY", 163 | "PAGE_READWRITE", 164 | "PAGE_WRITECOPY" 165 | }; 166 | std::vector suppliedProtections; 167 | boost::split(suppliedProtections, suppliedProtectionsAsString, boost::is_any_of(" ")); 168 | BOOST_FOREACH(const std::string & protection, suppliedProtections) { 169 | bool isProtectionRepeated = std::find(protections.begin(), protections.end(), protection) != protections.end(); 170 | if (isProtectionRepeated) { 171 | SetLastError(160); 172 | throw std::invalid_argument{ "The same memory protection cannot be supplied more than once" }; 173 | } 174 | 175 | bool isProtectionSupported = std::find(supportedProtections.begin(), supportedProtections.end(), protection) != supportedProtections.end(); 176 | if (isProtectionSupported) { 177 | protections.push_back(protection); 178 | } 179 | else { 180 | SetLastError(160); 181 | throw std::invalid_argument{ "The memory protections supplied are invalid. " 182 | "Supply only supported ones, separate each one with a space, and enclose all of them in quotes" }; 183 | } 184 | } 185 | isProtectionsOptionSupplied = true; 186 | } 187 | 188 | bool directoryExists(const std::string& suppliedDirectoryAsString) 189 | { 190 | DWORD fileAttributes = GetFileAttributesA(suppliedDirectoryAsString.c_str()); 191 | 192 | if (fileAttributes == INVALID_FILE_ATTRIBUTES) { 193 | return false; // Something is wrong with the path 194 | } 195 | 196 | if (fileAttributes & FILE_ATTRIBUTE_DIRECTORY) { 197 | return true; // The path corresponds with a directory 198 | } 199 | 200 | return false; // The path does not correspond with a directory 201 | } 202 | 203 | // Arguments 204 | int pid; 205 | std::string module; 206 | std::vector protections; 207 | std::string outputDirectory; 208 | 209 | // Options 210 | bool isModuleOptionSupplied; 211 | bool isProtectionsOptionSupplied; 212 | bool isJoinOptionSupplied; 213 | bool isOutputDirectoryOptionSupplied; 214 | bool isFileVersionInfoOptionSupplied; 215 | 216 | }; 217 | 218 | 219 | struct MemoryExtractionManager { 220 | 221 | MemoryExtractionManager(ArgumentManager& argumentManagerReceived) : argumentManager{ argumentManagerReceived } {} 222 | 223 | void extractMemoryContents() { 224 | 225 | HANDLE processHandle = OpenProcess(PROCESS_VM_READ | PROCESS_QUERY_INFORMATION, FALSE, argumentManager.getPid()); 226 | if (processHandle == NULL) { 227 | 228 | // Try to enable SeDebugPrivilege and call OpenProcess again 229 | HANDLE accessToken; 230 | 231 | if (OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &accessToken) == FALSE) { 232 | throw std::exception{ "An error has occurred trying to enable SeDebugPrivlege at function OpenProcessToken" }; 233 | } 234 | 235 | if (!SetPrivilege(accessToken, SE_DEBUG_NAME, true)) { 236 | CloseHandle(accessToken); 237 | throw std::exception{ "An error has occurred trying to enable SeDebugPrivlege at function SetPrivilege" }; 238 | } 239 | 240 | processHandle = OpenProcess(PROCESS_VM_READ | PROCESS_QUERY_INFORMATION, FALSE, argumentManager.getPid()); 241 | 242 | CloseHandle(accessToken); 243 | 244 | if (processHandle == NULL) { 245 | throw std::exception{ "A handle to the specified process could not be obtained" }; 246 | } 247 | 248 | } 249 | 250 | if (argumentManager.getIsModuleOptionSupplied() && argumentManager.getModule().length() == 0) { 251 | // The user is asking for data about the main module 252 | char mainModulePathAsCharArray[MAX_PATH]; 253 | if (GetProcessImageFileNameA(processHandle, mainModulePathAsCharArray, MAX_PATH) != 0) { 254 | std::string mainModulePath(mainModulePathAsCharArray); 255 | std::string mainModuleName(mainModulePath.substr(mainModulePath.rfind("\\") + 1)); 256 | argumentManager.setModule(mainModuleName); 257 | } 258 | else { 259 | CloseHandle(processHandle); 260 | throw std::exception{ "The name of the main module could not be obtained" }; 261 | } 262 | } 263 | 264 | BYTE* memoryPointer = NULL; // Virtual address 0x0000000000000000 265 | 266 | // Module option related variables 267 | BYTE* moduleBaseAddress; 268 | DWORD moduleSize; 269 | size_t moduleBaseAddressAsNumber; 270 | 271 | // If the --module option is supplied, I only extract the memory corresponding to the requiered module 272 | // In order to do that, I start at the module's base address, instead of at virtual address 0x0000000000000000 273 | if (argumentManager.getIsModuleOptionSupplied()) { 274 | MODULEENTRY32 moduleInformation = getModuleInformation(argumentManager.getModule()); 275 | memoryPointer = moduleInformation.modBaseAddr; 276 | moduleBaseAddress = moduleInformation.modBaseAddr; 277 | moduleSize = moduleInformation.modBaseSize; 278 | moduleBaseAddressAsNumber = reinterpret_cast(moduleInformation.modBaseAddr); 279 | 280 | if (argumentManager.getIsFileVersionInfoOptionSupplied()) { 281 | std::wstring modulePathW{ moduleInformation.szExePath }; 282 | std::wstring_convert> converter; 283 | std::string modulePath = converter.to_bytes(modulePathW); 284 | DWORD dwHandle; 285 | DWORD fileVersionInfoSize = GetFileVersionInfoSizeA(modulePath.c_str(), &dwHandle); 286 | if (fileVersionInfoSize == 0) { 287 | throw std::exception{ "An error has occurred trying to get the version information at function GetFileVersionInfoSizeA" }; 288 | } 289 | std::vector fileVersionInfoBuffer(fileVersionInfoSize); 290 | if (!GetFileVersionInfoA(modulePath.c_str(), dwHandle, fileVersionInfoSize, &fileVersionInfoBuffer[0])) { 291 | throw std::exception{ "An error has occurred trying to get the version information at function GetFileVersionInfoA" }; 292 | } 293 | directoryName = createDirectory(); 294 | retrieveFileVersionInformation(&fileVersionInfoBuffer[0]); 295 | } 296 | } 297 | 298 | if (!isDirectoryCreated) { 299 | directoryName = createDirectory(); 300 | } 301 | 302 | std::ofstream resultsFile(directoryName + "/results.txt", std::ofstream::out); 303 | resultsFile << "List of .dmp files generated:\n"; 304 | 305 | MEMORY_BASIC_INFORMATION memInfo; 306 | bool isMemoryExtractionFinished = false; 307 | bool isModuleOptionSupplied = argumentManager.getIsModuleOptionSupplied(); 308 | 309 | // Create files that contain raw memory data inside the directory prevously created 310 | while (VirtualQueryEx(processHandle, memoryPointer, &memInfo, sizeof(memInfo)) != 0 && !isMemoryExtractionFinished) { 311 | 312 | if (makeExtractionDecision(memInfo)) { 313 | extractMemoryRegion(processHandle, memInfo, resultsFile); 314 | } 315 | 316 | memoryPointer += memInfo.RegionSize; 317 | 318 | if (isModuleOptionSupplied && (reinterpret_cast(memoryPointer) >= moduleBaseAddressAsNumber + moduleSize)) { 319 | isMemoryExtractionFinished = true; 320 | } 321 | 322 | } 323 | if (argumentManager.getIsJoinOptionSupplied()) { 324 | using namespace CryptoPP; 325 | dmpFilesGeneratedCount++; 326 | 327 | // Calculate the SHA-256 of the file joinedModuleContents.dmp 328 | std::ifstream joinedModuleContentsStream(directoryName + "/joinedModuleContents.dmp", std::ios::in | std::ios::binary); 329 | std::string contents((std::istreambuf_iterator(joinedModuleContentsStream)), 330 | (std::istreambuf_iterator())); 331 | HexEncoder hexEncoder(new FileSink(resultsFile), false); 332 | std::string sha256Digest; 333 | SHA256 hash; 334 | hash.Update((const byte*)contents.c_str(), contents.length()); 335 | sha256Digest.resize(hash.DigestSize()); 336 | hash.Final((byte*)&sha256Digest[0]); 337 | 338 | // Create an entry in the results file for the joinedModuleContents.dmp file 339 | resultsFile << "Filename: " << "joinedModuleContents.dmp" << ", SHA-256: "; 340 | StringSource(sha256Digest, true, new Redirector(hexEncoder)); 341 | resultsFile << "\n"; 342 | 343 | joinedModuleContentsStream.close(); 344 | } 345 | 346 | resultsFile << "Number of .dmp files generated: " << dmpFilesGeneratedCount << "\n"; 347 | 348 | if (argumentManager.getIsFileVersionInfoOptionSupplied()) { 349 | resultsFile << "\nAdditional files generated:\n"; 350 | 351 | using namespace CryptoPP; 352 | dmpFilesGeneratedCount++; 353 | 354 | // Calculate the SHA-256 of the file moduleFileVersionInfo.fileinfo 355 | std::ifstream moduleFileVersionInfoStream(directoryName + "/moduleFileVersionInfo.fileinfo", std::ios::in | std::ios::binary); 356 | std::string contents((std::istreambuf_iterator(moduleFileVersionInfoStream)), 357 | (std::istreambuf_iterator())); 358 | HexEncoder hexEncoder(new FileSink(resultsFile), false); 359 | std::string sha256Digest; 360 | SHA256 hash; 361 | hash.Update((const byte*)contents.c_str(), contents.length()); 362 | sha256Digest.resize(hash.DigestSize()); 363 | hash.Final((byte*)&sha256Digest[0]); 364 | 365 | // Create an entry in the results file for the moduleFileVersionInfo.fileinfo file 366 | resultsFile << "Filename: " << "moduleFileVersionInfo.fileinfo" << ", SHA-256: "; 367 | StringSource(sha256Digest, true, new Redirector(hexEncoder)); 368 | resultsFile << "\n"; 369 | 370 | moduleFileVersionInfoStream.close(); 371 | } 372 | 373 | resultsFile << std::endl; 374 | resultsFile.close(); 375 | CloseHandle(processHandle); 376 | } 377 | 378 | private: 379 | 380 | MODULEENTRY32 getModuleInformation(std::string& suppliedModuleName) { 381 | HANDLE snapshotHandle = INVALID_HANDLE_VALUE; 382 | MODULEENTRY32 moduleEntry; 383 | 384 | // Get a snapshot of all the modules 385 | snapshotHandle = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE | TH32CS_SNAPMODULE32, argumentManager.getPid()); 386 | if (snapshotHandle == INVALID_HANDLE_VALUE) { 387 | throw std::exception{ "The modules of the specified process could not be retrieved" }; 388 | } 389 | 390 | moduleEntry.dwSize = sizeof(MODULEENTRY32); 391 | 392 | // Get the information about the first module 393 | if (!Module32First(snapshotHandle, &moduleEntry)) { 394 | CloseHandle(snapshotHandle); 395 | throw std::exception{ "The information of the first module could not be retrieved" }; 396 | } 397 | 398 | std::wstring_convert> stringConverter; 399 | std::string moduleName; 400 | 401 | // Get the information about the rest of the modules 402 | do { 403 | moduleName = stringConverter.to_bytes(moduleEntry.szModule); 404 | boost::algorithm::to_lower(moduleName); 405 | if (boost::iequals(suppliedModuleName, moduleName)) { 406 | CloseHandle(snapshotHandle); 407 | return moduleEntry; 408 | } 409 | 410 | } while (Module32Next(snapshotHandle, &moduleEntry)); 411 | 412 | CloseHandle(snapshotHandle); 413 | throw std::invalid_argument{ "The module was not found in the specified process" }; 414 | } 415 | 416 | std::string createDirectory() { 417 | 418 | // The directory created has a representative name 419 | // Nomenclature: PID_Day-Month-Year_Hour-Minute-Second_UTC 420 | 421 | std::time_t timestamp = std::time(nullptr); 422 | struct tm buf; 423 | gmtime_s(&buf, ×tamp); 424 | std::stringstream directoryNameStream; 425 | if (argumentManager.getIsOutputDirectoryOptionSupplied()) { 426 | directoryNameStream << argumentManager.getOutputDirectory() << "/"; 427 | } 428 | directoryNameStream << std::dec << argumentManager.getPid() << "_" << std::put_time(&buf, "%d-%m-%Y_%H-%M-%S_UTC"); 429 | CreateDirectoryA(directoryNameStream.str().c_str(), NULL); 430 | isDirectoryCreated = true; 431 | return directoryNameStream.str(); 432 | } 433 | 434 | bool makeExtractionDecision(MEMORY_BASIC_INFORMATION& memInfo) { 435 | DWORD state = memInfo.State; 436 | DWORD protection = memInfo.Protect; 437 | if (argumentManager.getIsProtectionsOptionSupplied()) { 438 | std::vector& protections = argumentManager.getProtections(); 439 | bool isPageExecuteSupplied = std::find(protections.begin(), protections.end(), "PAGE_EXECUTE") != protections.end(); 440 | bool isPageExecuteReadSupplied = std::find(protections.begin(), protections.end(), "PAGE_EXECUTE_READ") != protections.end(); 441 | bool isPageExecuteReadWriteSupplied = std::find(protections.begin(), protections.end(), "PAGE_EXECUTE_READWRITE") != protections.end(); 442 | bool isPageExecuteWriteCopySupplied = std::find(protections.begin(), protections.end(), "PAGE_EXECUTE_WRITECOPY") != protections.end(); 443 | bool isPageReadOnlySupplied = std::find(protections.begin(), protections.end(), "PAGE_READONLY") != protections.end(); 444 | bool isPageReadWriteSupplied = std::find(protections.begin(), protections.end(), "PAGE_READWRITE") != protections.end(); 445 | bool isPageWriteCopySupplied = std::find(protections.begin(), protections.end(), "PAGE_WRITECOPY") != protections.end(); 446 | return state == MEM_COMMIT 447 | && ((protection == PAGE_EXECUTE && isPageExecuteSupplied) 448 | || (protection == PAGE_EXECUTE_READ && isPageExecuteReadSupplied) 449 | || (protection == PAGE_EXECUTE_READWRITE && isPageExecuteReadWriteSupplied) 450 | || (protection == PAGE_EXECUTE_WRITECOPY && isPageExecuteWriteCopySupplied) 451 | || (protection == PAGE_READONLY && isPageReadOnlySupplied) 452 | || (protection == PAGE_READWRITE && isPageReadWriteSupplied) 453 | || (protection == PAGE_WRITECOPY && isPageWriteCopySupplied) 454 | ); 455 | } 456 | else if (argumentManager.getIsModuleOptionSupplied()) { 457 | return state == MEM_COMMIT 458 | && (protection == PAGE_EXECUTE 459 | || protection == PAGE_EXECUTE_READ 460 | || protection == PAGE_EXECUTE_READWRITE 461 | || protection == PAGE_EXECUTE_WRITECOPY 462 | || protection == PAGE_READONLY 463 | || protection == PAGE_READWRITE 464 | || protection == PAGE_WRITECOPY 465 | ); 466 | } 467 | else { 468 | return state == MEM_COMMIT 469 | && (protection == PAGE_READONLY 470 | || protection == PAGE_READWRITE 471 | || protection == PAGE_WRITECOPY 472 | ); 473 | } 474 | } 475 | 476 | void extractMemoryRegion(HANDLE& processHandle, MEMORY_BASIC_INFORMATION& memInfo, std::ofstream& resultsFile) { 477 | auto memoryContents = std::make_unique(memInfo.RegionSize); 478 | SIZE_T numberOfBytesRead = 0; 479 | 480 | if (ReadProcessMemory(processHandle, memInfo.BaseAddress, memoryContents.get(), memInfo.RegionSize, &numberOfBytesRead) != 0) { 481 | 482 | // Each .dmp file that corresponds to one memory region has a representative name 483 | // Nomenclature: virtualAddress_sizeOfMemoryRegion 484 | 485 | std::stringstream fileNameStream; 486 | fileNameStream << memInfo.BaseAddress << "_" << std::hex << memInfo.RegionSize << ".dmp"; 487 | std::string fileName = fileNameStream.str(); 488 | boost::algorithm::to_lower(fileName); 489 | 490 | std::string filePath = directoryName + "/" + fileName; 491 | 492 | std::ofstream memoryDataFile(filePath, std::ofstream::binary); 493 | memoryDataFile.write(memoryContents.get(), memInfo.RegionSize); 494 | memoryDataFile.close(); 495 | 496 | dmpFilesGeneratedCount++; 497 | registerDmpFileCreation(fileName, memoryContents.get(), memInfo, resultsFile); 498 | 499 | if (argumentManager.getIsJoinOptionSupplied()) { 500 | std::string fullModuleFilePath = directoryName + "/" + "joinedModuleContents.dmp"; 501 | std::ofstream fullModuleDataFile(fullModuleFilePath, std::ofstream::app | std::ofstream::binary); 502 | if (nextAddressAfterModuleRegion != 0 && nextAddressAfterModuleRegion < reinterpret_cast(memInfo.BaseAddress)) { 503 | // Insert padding if memory regions are not contiguous 504 | SIZE_T paddingSize = reinterpret_cast(memInfo.BaseAddress) - nextAddressAfterModuleRegion; 505 | auto padding = std::make_unique(paddingSize); 506 | memset(padding.get(), 0, paddingSize); 507 | fullModuleDataFile.write(padding.get(), paddingSize); 508 | } 509 | fullModuleDataFile.write(memoryContents.get(), memInfo.RegionSize); 510 | nextAddressAfterModuleRegion = reinterpret_cast(memInfo.BaseAddress) + memInfo.RegionSize; 511 | fullModuleDataFile.close(); 512 | } 513 | } 514 | } 515 | 516 | void registerDmpFileCreation(std::string& fileName, char* fileContents, MEMORY_BASIC_INFORMATION& memInfo, std::ofstream& resultsFile) { 517 | using namespace CryptoPP; 518 | 519 | // Calculate the SHA-256 hash of the .dmp file contents 520 | HexEncoder hexEncoder(new FileSink(resultsFile), false); 521 | std::string sha256Digest; 522 | SHA256 hash; 523 | hash.Update((const byte*)fileContents, memInfo.RegionSize); 524 | sha256Digest.resize(hash.DigestSize()); 525 | hash.Final((byte*)&sha256Digest[0]); 526 | 527 | // Create an entry in the results file for the new .dmp file 528 | resultsFile << "Filename: " << fileName << ", SHA-256: "; 529 | StringSource(sha256Digest, true, new Redirector(hexEncoder)); 530 | std::string memoryProtection; 531 | switch (memInfo.Protect) { 532 | case PAGE_EXECUTE: { 533 | memoryProtection = "PAGE_EXECUTE"; 534 | break; 535 | } 536 | case PAGE_EXECUTE_READ: { 537 | memoryProtection = "PAGE_EXECUTE_READ"; 538 | break; 539 | } 540 | case PAGE_EXECUTE_READWRITE: { 541 | memoryProtection = "PAGE_EXECUTE_READWRITE"; 542 | break; 543 | } 544 | case PAGE_EXECUTE_WRITECOPY: { 545 | memoryProtection = "PAGE_EXECUTE_WRITECOPY"; 546 | break; 547 | } 548 | case PAGE_READONLY: { 549 | memoryProtection = "PAGE_READONLY"; 550 | break; 551 | } 552 | case PAGE_READWRITE: { 553 | memoryProtection = "PAGE_READWRITE"; 554 | break; 555 | } 556 | case PAGE_WRITECOPY: { 557 | memoryProtection = "PAGE_WRITECOPY"; 558 | break; 559 | } 560 | default: { 561 | memoryProtection = "The memory protection is not supported by this tool yet"; 562 | } 563 | } 564 | resultsFile << ", Memory protection: " << memoryProtection << "\n"; 565 | } 566 | 567 | // Function found here: https://docs.microsoft.com/en-us/windows/win32/secauthz/enabling-and-disabling-privileges-in-c-- 568 | BOOL SetPrivilege( 569 | HANDLE hToken, // access token handle 570 | LPCTSTR lpszPrivilege, // name of privilege to enable/disable 571 | BOOL bEnablePrivilege // to enable or disable privilege 572 | ) 573 | { 574 | TOKEN_PRIVILEGES tp; 575 | LUID luid; 576 | 577 | if (!LookupPrivilegeValue( 578 | NULL, // lookup privilege on local system 579 | lpszPrivilege, // privilege to lookup 580 | &luid)) // receives LUID of privilege 581 | { 582 | printf("LookupPrivilegeValue error: %u\n", GetLastError()); 583 | return FALSE; 584 | } 585 | 586 | tp.PrivilegeCount = 1; 587 | tp.Privileges[0].Luid = luid; 588 | if (bEnablePrivilege) 589 | tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; 590 | else 591 | tp.Privileges[0].Attributes = 0; 592 | 593 | // Enable the privilege or disable all privileges. 594 | 595 | if (!AdjustTokenPrivileges( 596 | hToken, 597 | FALSE, 598 | &tp, 599 | sizeof(TOKEN_PRIVILEGES), 600 | (PTOKEN_PRIVILEGES)NULL, 601 | (PDWORD)NULL)) 602 | { 603 | printf("AdjustTokenPrivileges error: %u\n", GetLastError()); 604 | return FALSE; 605 | } 606 | 607 | if (GetLastError() == ERROR_NOT_ALL_ASSIGNED) 608 | 609 | { 610 | printf("The token does not have the specified privilege. \n"); 611 | return FALSE; 612 | } 613 | 614 | return TRUE; 615 | } 616 | 617 | void retrieveFileVersionInformation(LPCVOID fileVersionInfoBufferPointer) { 618 | std::vector versionInfoKeys{ 619 | "Comments", 620 | "CompanyName", 621 | "FileDescription", 622 | "FileVersion", 623 | "InternalName", 624 | "LegalCopyright", 625 | "LegalTrademarks", 626 | "OriginalFilename", 627 | "ProductName", 628 | "ProductVersion", 629 | "PrivateBuild", 630 | "SpecialBuild" 631 | }; 632 | 633 | struct LANGANDCODEPAGE { 634 | WORD wLanguage; 635 | WORD wCodePage; 636 | } *lpTranslate; 637 | 638 | UINT cbTranslate = 0; 639 | if (!VerQueryValueA(fileVersionInfoBufferPointer, "\\VarFileInfo\\Translation", (LPVOID*)&lpTranslate, &cbTranslate)) { 640 | throw std::exception{ "An error has occurred trying to get the version information at function VerQueryValueA" }; 641 | } 642 | 643 | std::ofstream moduleVersionInfoFile(directoryName + "/moduleFileVersionInfo.fileinfo", std::ofstream::out); 644 | 645 | for (unsigned int i = 0; i < (cbTranslate / sizeof(LANGANDCODEPAGE)); i++) { 646 | BOOST_FOREACH(const std::string & versionInfoKey, versionInfoKeys) { 647 | std::string versionInfoKeyFormat = "\\StringFileInfo\\%04x%04x\\" + versionInfoKey; 648 | char versionInfoKeyWithLanguage[256]; 649 | sprintf_s(versionInfoKeyWithLanguage, versionInfoKeyFormat.c_str(), lpTranslate[i].wLanguage, lpTranslate[i].wCodePage); 650 | LPSTR versionInfoValuePointer = NULL; 651 | UINT versionInfoValueSize = 0; 652 | if (VerQueryValueA(fileVersionInfoBufferPointer, versionInfoKeyWithLanguage, (LPVOID*)&versionInfoValuePointer, &versionInfoValueSize)) { 653 | moduleVersionInfoFile << versionInfoKey << "," << std::string(versionInfoValuePointer) << "\n"; 654 | } 655 | else { 656 | // The value for the key is empty 657 | moduleVersionInfoFile << versionInfoKey << ",\n"; 658 | } 659 | } 660 | } 661 | moduleVersionInfoFile.close(); 662 | } 663 | 664 | ArgumentManager& argumentManager; 665 | std::string directoryName; // The directory where the memory data files will be placed 666 | bool isDirectoryCreated; 667 | unsigned int dmpFilesGeneratedCount; 668 | SIZE_T nextAddressAfterModuleRegion; 669 | 670 | }; 671 | 672 | 673 | struct ExecutionManager { 674 | 675 | void execute(int argc, char* argv[]) { 676 | try { 677 | ArgumentManager argumentManager{}; 678 | argumentManager.validateArguments(argc, argv); 679 | MemoryExtractionManager memoryExtractionManager{ argumentManager }; 680 | memoryExtractionManager.extractMemoryContents(); 681 | } 682 | catch (const std::exception& ex) { 683 | std::cerr << "Error: " << ex.what() << "." << std::endl; 684 | exit(GetLastError()); 685 | } 686 | catch (...) { 687 | std::cerr << "Error: An unexpected error has occurred." << std::endl; 688 | exit(GetLastError()); 689 | } 690 | } 691 | 692 | }; 693 | 694 | 695 | int main(int argc, char* argv[]) { 696 | 697 | ExecutionManager executionManager{}; 698 | executionManager.execute(argc, argv); 699 | 700 | } --------------------------------------------------------------------------------