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  1. #include <Windows.h>
  2. #include <stdio.h>
  3. #include "error.h"
  4.  
  5. #pragma comment(linker, "/DYNAMICBASE:NO")
  6. #pragma comment(linker, "/BASE:0x02000000")
  7.  
  8. void * FileToMemory(LPTSTR file)
  9. {
  10. 	HANDLE hFile = NULL;
  11. 	HANDLE hFileMap = NULL;
  12. 	LPVOID pMapView = NULL;
  13.  
  14. 	hFile = CreateFile(file, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
  15. 	if (hFile == INVALID_HANDLE_VALUE)
  16. 	{
  17. 		CloseHandle(hFile);
  18. 		return NULL;
  19. 	}
  20.  
  21. 	hFileMap = CreateFileMapping(hFile, NULL, PAGE_READONLY, 0, 0, NULL);
  22. 	if (hFileMap == NULL)
  23. 	{
  24. 		CloseHandle(hFile);
  25. 		return NULL;
  26. 	}
  27.  
  28. 	pMapView = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 0);
  29.  
  30. 	return pMapView;
  31. }
  32.  
  33. void GetHeaders(PBYTE ibase, PIMAGE_FILE_HEADER *pfh, PIMAGE_OPTIONAL_HEADER *poh, PIMAGE_SECTION_HEADER *psh)
  34. {
  35. 	PIMAGE_DOS_HEADER mzhead = (PIMAGE_DOS_HEADER)ibase;
  36. 	*pfh = (PIMAGE_FILE_HEADER)&ibase[mzhead->e_lfanew];
  37. 	*pfh = (PIMAGE_FILE_HEADER)((PBYTE)*pfh + sizeof(IMAGE_NT_SIGNATURE));
  38. 	*poh = (PIMAGE_OPTIONAL_HEADER)((PBYTE)*pfh + sizeof(IMAGE_FILE_HEADER));
  39. 	*psh = (PIMAGE_SECTION_HEADER)((PBYTE)*poh + sizeof(IMAGE_OPTIONAL_HEADER));
  40. }
  41.  
  42. void * LoadPE(void *image)
  43. {
  44. 	PIMAGE_DOS_HEADER dos_hdr = NULL;
  45. 	PIMAGE_FILE_HEADER file_hdr = NULL;
  46. 	PIMAGE_OPTIONAL_HEADER opt_hdr = NULL;
  47. 	PIMAGE_SECTION_HEADER section_hdr = NULL;
  48. 	LPVOID pImageBase = NULL;
  49.  
  50. 	dos_hdr = (PIMAGE_DOS_HEADER) image;
  51. 	file_hdr = (PIMAGE_FILE_HEADER) ((DWORD)image + dos_hdr->e_lfanew + 4);
  52. 	opt_hdr = (PIMAGE_OPTIONAL_HEADER) (file_hdr + 1);
  53. 	section_hdr = (PIMAGE_SECTION_HEADER)((DWORD)opt_hdr + sizeof(IMAGE_OPTIONAL_HEADER));
  54.  
  55. 	printf("Allocating memory for image\n");
  56. 	UnmapViewOfFile((LPVOID)opt_hdr->ImageBase);
  57. 	pImageBase = VirtualAlloc((LPVOID)opt_hdr->ImageBase, opt_hdr->SizeOfImage, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
  58. 	if (pImageBase == NULL)
  59. 	{
  60. 		FormatError(GetLastError());
  61. 		printf("Error while allocating memory. Possible conflict of base addresses\n");
  62. 		return NULL;
  63. 	}
  64.  
  65. 	printf("Copying headers\n");
  66. 	CopyMemory(pImageBase, image, opt_hdr->SizeOfHeaders);
  67.  
  68. 	printf("Copying sections\n");
  69. 	for (DWORD i = 0; i < file_hdr->NumberOfSections; i++)
  70. 	{
  71. 		LPVOID VirtualAddress = (LPVOID)((DWORD)pImageBase + section_hdr[i].VirtualAddress);
  72. 		CopyMemory(VirtualAddress, (void *)((DWORD)image + section_hdr[i].PointerToRawData), section_hdr[i].SizeOfRawData);
  73. 	}
  74.  
  75. 	printf("Setting attributes\n");
  76. 	for (DWORD i = 0; i < file_hdr->NumberOfSections; i++)
  77. 	{
  78. 		LPVOID VirtualAddress = (LPVOID)((DWORD)pImageBase + section_hdr->VirtualAddress);
  79. 		DWORD VirtualSize = section_hdr[i].Misc.VirtualSize;
  80.  
  81. 		DWORD attributes = 0;
  82. 		if(section_hdr[i].Characteristics & IMAGE_SCN_MEM_EXECUTE ||section_hdr[i].Characteristics & IMAGE_SCN_MEM_READ )
  83. 		{
  84. 			attributes |= PAGE_EXECUTE;
  85. 			if(section_hdr[i].Characteristics & IMAGE_SCN_MEM_WRITE )
  86. 				attributes |= PAGE_READWRITE;
  87. 			else
  88. 				attributes |= PAGE_READONLY;
  89. 		}
  90. 		else if(section_hdr[i].Characteristics & IMAGE_SCN_MEM_WRITE )
  91. 			attributes |= PAGE_READWRITE;
  92.  
  93. 		VirtualProtect(VirtualAddress, VirtualSize, attributes, &attributes);
  94. 	}
  95.  
  96. 	return pImageBase;
  97. }
  98.  
  99. void CallPE(void *base)
  100. {
  101. 	PIMAGE_FILE_HEADER pfh;
  102. 	PIMAGE_OPTIONAL_HEADER poh;
  103. 	PIMAGE_SECTION_HEADER psh;
  104. 	LPVOID entry = NULL;
  105.  
  106.     GetHeaders((PBYTE)base, &pfh, &poh, &psh);
  107.  
  108. 	entry = (LPVOID)((DWORD)base + poh->AddressOfEntryPoint);
  109. 	__asm call dword ptr [entry];
  110. }
  111.  
  112. int main()
  113. {
  114. 	void *pImage = FileToMemory(TEXT("test.exe"));
  115. 	void *pModule = LoadPE(pImage);
  116. 	CallPE(pModule);
  117. 	return 0;
  118. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.c:1:21: fatal error: Windows.h: No such file or directory
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/s9mMcD
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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