FileBuffer To ImageBuffer

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检测测试利用PE架构, 将文件载入到内村, 主要利用的是节表的知识


代码目录(多动手,总会有收获!!): 


// PEOperate.cpp: implementation of the PEOperate class.
//
//////////////////////////////////////////////////////////////////////

#include "PEOperate.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
#include "windows.h"
#include "stdio.h"


//加载PE文件到内存中
LPVOID ReadPEFile(LPSTR lpszFile)
{
	FILE *pFile = NULL;
	DWORD fileSize = 0;
	LPVOID pFileBuffer = NULL;
	
	//打开文件
	pFile = fopen(lpszFile,"rb");
	
	if(!pFile)
	{
		printf("无法打开文件EXE文件");
		return NULL;
	}
	
	fseek(pFile,0,SEEK_END);
	fileSize = ftell(pFile);
	fseek(pFile,0,SEEK_SET);
	
	//分配缓冲区
	pFileBuffer = malloc(fileSize);
	if(!pFileBuffer)
	{
		printf("分配空间失败!\n");
		fclose(pFile);
		return NULL;
	}
	
	//文件读取
	
	size_t n = fread(pFileBuffer,fileSize,1,pFile);
	
	if(!n)
	{
		printf("读取数据失败\n");
		free(pFileBuffer);
		fclose(pFile);
		return NULL;
	}
	
	//关闭文件
	fclose(pFile);
	return pFileBuffer;
	
}

//内存直接写入到文件
void WirteToFile(LPVOID pFileBuffer,size_t fileSize,LPSTR lpszFile)
{
	FILE *pFile = NULL;	
	//打开文件
	pFile = fopen(lpszFile,"wb");
	
	if(!pFile)
	{
		printf("无法打开文件EXE文件");
		return;
	}
	
	size_t writeSize = fwrite(pFileBuffer,fileSize,1,pFile);
	printf("WirteSize:%d\n",writeSize);
	
	//关闭文件
	fclose(pFile);
	return;
	
}


//打印所有的PE头信息
VOID PrintNTHeaders(LPSTR lpszFile)
{
	LPVOID pFileBuffer = NULL;
	PIMAGE_DOS_HEADER pDosHeader = NULL;
	PIMAGE_NT_HEADERS pNTHeader = NULL;
	PIMAGE_FILE_HEADER pPEHeader = NULL;
	PIMAGE_OPTIONAL_HEADER32 pOptionHeader = NULL;
	PIMAGE_SECTION_HEADER pSectionHeader = NULL;
	
	pFileBuffer= ReadPEFile(lpszFile);
	if(!pFileBuffer)
	{
		printf("文件读取失败\n");
		return;
	}
	
	//MZ标志
	if(*((PWORD)pFileBuffer)!=IMAGE_DOS_SIGNATURE)
	{
		printf("不是有效的MZ标志\n");
		free(pFileBuffer);
		return;
	}
	
	pDosHeader = (PIMAGE_DOS_HEADER)pFileBuffer;
	
	//打印DOS头
	printf("------------DOS头------------\n");
	printf("MZ标志: %x\n",pDosHeader->e_magic);
	printf("PE偏移: %x\n",pDosHeader->e_lfanew);

	//判断是否是有效的PE 
	if(*((PDWORD)((DWORD)pFileBuffer+pDosHeader->e_lfanew))!=IMAGE_NT_SIGNATURE)
	{
		printf("不是有效的PE标志\n");
		free(pFileBuffer);
		return;
	}

	pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pFileBuffer+pDosHeader->e_lfanew);

	//打印NT头
	printf("------------NT头------------\n");
	printf("Signature: %x\n",pNTHeader->Signature);
	pPEHeader = (PIMAGE_FILE_HEADER)(((DWORD)pNTHeader)+4);
	printf("------------标准PE头--------\n");
	printf("Machine: %x\n",pPEHeader->Machine);
	printf("节的数量: %x\n",pPEHeader->NumberOfSections);
	printf("SizeOfOptionHeaders: %x\n",pPEHeader->SizeOfOptionalHeader);

	//可选择PE头
	pOptionHeader = (PIMAGE_OPTIONAL_HEADER32)((DWORD)pPEHeader+IMAGE_SIZEOF_FILE_HEADER);
	printf("------------OPTION_PE头--------\n");
	printf("Machine: %x \n",pOptionHeader->Magic);
	printf("OEP: %x \n",pOptionHeader->AddressOfEntryPoint);
	printf("ImageBase: %x \n",pOptionHeader->ImageBase);
	printf("SectionAlignment: %x \n",pOptionHeader->SectionAlignment);
	printf("FileAlignment: %x \n",pOptionHeader->FileAlignment);
	printf("SizeOfImage: %x \n",pOptionHeader->SizeOfImage);
	printf("SizeOfHeaders: %x \n",pOptionHeader->SizeOfHeaders);
	
	
	//节表的信息(分别打印)
	//确定节表的个数:
	int Section_Number = pPEHeader->NumberOfSections;
	pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader+pPEHeader->SizeOfOptionalHeader);

	for(int i=0;i<Section_Number;i++)
	{
		printf("------------节表信息:%d--------\n",i+1);
		printf("Name: %s \n",pSectionHeader->Name);
		printf("VirualSize : %x\n",pSectionHeader->Misc);
		printf("VirualAddress: %x\n",pSectionHeader->VirtualAddress);
		printf("SizeOfRawData: %x \n",pSectionHeader->SizeOfRawData);
		printf("PointerToRowData: %x \n",pSectionHeader->PointerToRawData);
		
		//下一个节表
		pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pSectionHeader+40);

	}
	//释放内存
	free(pFileBuffer);
}


//将PE的FileBuffer拷贝到ImageBuffer
LPVOID CopyFileBufferToImageBuffer(LPVOID pFileBuffer)
{
	PIMAGE_DOS_HEADER pDosHeader = NULL;
	PIMAGE_NT_HEADERS pNTHeader = NULL;
	PIMAGE_FILE_HEADER pPEHeader = NULL;
	PIMAGE_OPTIONAL_HEADER32 pOptionHeader = NULL;
	PIMAGE_SECTION_HEADER pSectionHeader = NULL;
	
	if(!pFileBuffer)
	{
		printf("文件读取失败\n");
		return NULL;
	}

	//Header信息
	pDosHeader = (PIMAGE_DOS_HEADER)pFileBuffer;
	pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pFileBuffer+pDosHeader->e_lfanew);
	pPEHeader = (PIMAGE_FILE_HEADER)(((DWORD)pNTHeader)+4);
	pOptionHeader = (PIMAGE_OPTIONAL_HEADER32)((DWORD)pPEHeader+IMAGE_SIZEOF_FILE_HEADER);
	pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader+pPEHeader->SizeOfOptionalHeader);
	
	DWORD ImageSize = pOptionHeader->SizeOfImage;
	
	//LPVOID pImageBuffer=NULL;
	//分配缓冲区
	LPVOID pImageBuffer=NULL;
	pImageBuffer = malloc(ImageSize);

	if(!pImageBuffer)
	{
		printf("pImageBuffer分配空间失败!\n");
		return NULL;
	}
	//printf("%x \n",ImageSize);

	memset(pImageBuffer,0,ImageSize);

	//分段拷贝数据到ImageBuffer中
	//1 拷贝头
	DWORD HeaderSize = pOptionHeader->SizeOfHeaders;
	//DWORD Head_i = 0;
	//copy header
	memcpy(pImageBuffer,pFileBuffer,HeaderSize);
	
	//2 拷贝节 pSectionHeader
	//数量，位置
	int Section_Number = pPEHeader->NumberOfSections;
	//分节进行写入

	LPVOID pFileBuffer_sec = pFileBuffer;
	LPVOID pImageBuffer_sec = pImageBuffer;

	//printf("pFileBuffer_sec: %x \n",pFileBuffer_sec);
	//printf("pImageBuffer_sec: %x \n",pImageBuffer_sec);

	for(int i=0;i<Section_Number;i++)
	{
		DWORD FileSizeOfRawData = pSectionHeader->SizeOfRawData;
		DWORD FilePointerToRawData = pSectionHeader->PointerToRawData;
		DWORD MemVirtualAddress = pSectionHeader->VirtualAddress;
		pFileBuffer_sec=(LPVOID)((DWORD)pFileBuffer+FilePointerToRawData);
		pImageBuffer_sec=(LPVOID)((DWORD)pImageBuffer+MemVirtualAddress);
	
		//printf("pFileBuffer_sec: %x \n",pFileBuffer_sec);
		//printf("pImageBuffer_sec: %x \n",pImageBuffer_sec);

		memcpy(pImageBuffer_sec,pFileBuffer_sec,FileSizeOfRawData);
		//下一个节表
		pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pSectionHeader+40);
	}
	
	//写出
	//WirteToFile(pImageBuffer,ImageSize,"c://image.exe");

	return pImageBuffer;
}

LPVOID CopyImageBuffertoNewBuffer(LPVOID pImageBuffer)
{
	

	return NULL;
}

BOOL MemeryTOFile(LPVOID pMemBuffer,LPSTR lpszFile)
{
	PIMAGE_DOS_HEADER pDosHeader = NULL;
	PIMAGE_NT_HEADERS pNTHeader = NULL;
	PIMAGE_FILE_HEADER pPEHeader = NULL;
	PIMAGE_OPTIONAL_HEADER32 pOptionHeader = NULL;
	PIMAGE_SECTION_HEADER pSectionHeader = NULL;
	
	//Header信息
	pDosHeader = (PIMAGE_DOS_HEADER)pMemBuffer;
	pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pMemBuffer+pDosHeader->e_lfanew);
	pPEHeader = (PIMAGE_FILE_HEADER)(((DWORD)pNTHeader)+4);
	pOptionHeader = (PIMAGE_OPTIONAL_HEADER32)((DWORD)pPEHeader+IMAGE_SIZEOF_FILE_HEADER);
	pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader+pPEHeader->SizeOfOptionalHeader);
	

	//将内存中的文件转入到File中
	FILE *pFile = NULL;	
	//打开文件
	pFile = fopen(lpszFile,"a+b");
	
	if(!pFile)
	{
		printf("无法打开文件EXE文件");
		return FALSE;
	}
	
	//写header
	DWORD SIZE_HEADER =  pOptionHeader->SizeOfHeaders;
	fwrite(pMemBuffer,SIZE_HEADER,1,pFile);

	//写节表
	int Section_Number = pPEHeader->NumberOfSections;

	LPVOID pImageBuffer_sec = pMemBuffer;
	
	printf("pImageBuffer_SEC : %x \n",pImageBuffer_sec);
	for(int i=0;i<Section_Number;i++)
	{
		DWORD FileSizeOfRawData = pSectionHeader->SizeOfRawData;
		DWORD FilePointerToRawData = pSectionHeader->PointerToRawData;
		DWORD MemVirtualAddress = pSectionHeader->VirtualAddress;

		pImageBuffer_sec=(LPVOID)((DWORD)pMemBuffer+MemVirtualAddress);
		printf("pImageBuffer_SEC : %x \n",pImageBuffer_sec);

		fwrite(pImageBuffer_sec,FileSizeOfRawData,1,pFile);

		pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pSectionHeader+40);	
	}

	
	
	//关闭文件
	fclose(pFile);
	
	return TRUE;
}

DWORD RVAToFileOffset(LPVOID pFileBuffer,DWORD dwRva)
{
	PIMAGE_DOS_HEADER pDosHeader = NULL;
	PIMAGE_NT_HEADERS pNTHeader = NULL;
	PIMAGE_FILE_HEADER pPEHeader = NULL;
	PIMAGE_OPTIONAL_HEADER32 pOptionHeader = NULL;
	PIMAGE_SECTION_HEADER pSectionHeader = NULL;
	
	if(!pFileBuffer)
	{
		printf("文件读取失败\n");
		return NULL;
	}

	//Header信息
	pDosHeader = (PIMAGE_DOS_HEADER)pFileBuffer;
	pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pFileBuffer+pDosHeader->e_lfanew);
	pPEHeader = (PIMAGE_FILE_HEADER)(((DWORD)pNTHeader)+4);
	pOptionHeader = (PIMAGE_OPTIONAL_HEADER32)((DWORD)pPEHeader+IMAGE_SIZEOF_FILE_HEADER);
	pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader+pPEHeader->SizeOfOptionalHeader);

	DWORD ImageSize = pOptionHeader->SizeOfImage;
	int Section_Number = pPEHeader->NumberOfSections;
	int i=0;
	for(i=0;i<Section_Number;i++)
	{
		printf("VirualSize : %x\n",pSectionHeader->Misc);
		printf("VirualAddress: %x\n",pSectionHeader->VirtualAddress);
		
		DWORD dumpVirualSize = pSectionHeader->Misc.VirtualSize;
		DWORD dumpVirualAddress = pSectionHeader->VirtualAddress;

		if(dwRva>=dumpVirualAddress && dwRva <=dumpVirualAddress+dumpVirualSize)
		{
			printf("地址在第:%d 节 %s \n",i+1,pSectionHeader->Name);
			break;
		}
		//下一个节表
		pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pSectionHeader+40);
	}
	
	//确定是第i+1节
	//确定偏移距离
	DWORD fileOff = pSectionHeader->PointerToRawData + (dwRva-pSectionHeader->VirtualAddress);

	return fileOff;
}


原文链接： FileBuffer To ImageBuffer 版权所有，转载时请注明出处，违者必究。
注明出处格式：流沙团 ( https://gyarmy.com/post-300.html )

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