复制代码 隐藏代码#include <stdio.h>
#include <malloc.h>
#include <windows.h>
#include <winnt.h>
#include <math.h>
//在VC6这个比较旧的环境里，没有定义64位的这个宏，需要自己定义，在VS2019中无需自己定义
#define IMAGE_FILE_MACHINE_AMD64 0x8664
//向文件中指定位置追加数据
//第一个参数为文件路径
//第二个参数为要追加的数据指针
//第三个参数为要追加的数据大小
//第四个参数为位置偏移
//第五个参数为hMap的指针
//第六个参数为pFile的指针
BOOL appendFile(LPCSTR filePath, PVOID writeData, DWORD sizeOfWriteData, DWORD offset, HANDLE* phMap, PVOID* ppFile) {
HANDLE hFile = CreateFileA(filePath, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0);
char newPath[100];
strcpy(newPath, filePath);
strcat(newPath, ".exe");
HANDLE hFile2 = CreateFileA(newPath, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_ALWAYS, 0, 0);
//WriteFile用于接收实际写入的大小的参数
DWORD dwWritenSize = 0;
//根据文件句柄创建映射
HANDLE hMap = CreateFileMappingA(hFile, NULL, PAGE_READWRITE, 0, 0, 0);
//映射内容
LPVOID pFile = MapViewOfFile(hMap, FILE_SHARE_WRITE, 0, 0, 0);
BYTE* content = (BYTE*)pFile;
content += offset;
//写入要插入数据前的数据
DWORD size = SetFilePointer(hFile, NULL, NULL, FILE_END);
BOOL bRet;
bRet = WriteFile(hFile2, pFile, offset, &dwWritenSize, NULL);
if (!bRet)return false;
//写入要插入的数据
SetFilePointer(hFile, NULL, NULL, FILE_END);
bRet = WriteFile(hFile2, writeData, sizeOfWriteData, &dwWritenSize, NULL);
if (!bRet)return false;
//写入要插入数据后的数据
SetFilePointer(hFile, NULL, NULL, FILE_END);
bRet = WriteFile(hFile2, content, size - offset, &dwWritenSize, NULL);
if (!bRet)return false;
//在删除文件前要先关闭句柄和映射
CloseHandle(hFile);
CloseHandle(hMap);
CloseHandle(*phMap);
UnmapViewOfFile(pFile);
UnmapViewOfFile(*ppFile);
bRet = DeleteFileA(filePath);
if (!bRet)return false;
hFile = CreateFileA(filePath, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_ALWAYS, 0, 0);
//根据文件句柄创建映射
hMap = CreateFileMappingA(hFile2, NULL, PAGE_READWRITE, 0, 0, 0);
//映射内容
pFile = MapViewOfFile(hMap, FILE_SHARE_WRITE, 0, 0, 0);
SetFilePointer(hFile, NULL, NULL, FILE_BEGIN);
bRet = WriteFile(hFile, pFile, sizeOfWriteData + size, &dwWritenSize, NULL);
if (!bRet)return false;
//在删除文件前要先关闭句柄和映射
CloseHandle(hFile);
CloseHandle(hFile2);
CloseHandle(hMap);
UnmapViewOfFile(pFile);
bRet = DeleteFileA(newPath);
if (!bRet)return false;
hFile = CreateFileA(filePath, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_ALWAYS, 0, 0);
//根据文件句柄创建映射
hMap = CreateFileMappingA(hFile, NULL, PAGE_READWRITE, 0, 0, 0);
//映射内容
*ppFile = MapViewOfFile(hMap, FILE_SHARE_WRITE, 0, 0, 0);
*phMap = hMap;
CloseHandle(hFile);
return true;
}
//根据pFile获取PE文件结构
void GetPeStruct32(LPVOID pFile, _IMAGE_DOS_HEADER* dos, _IMAGE_NT_HEADERS* nt, _IMAGE_SECTION_HEADER** sectionArr) {
dos = (_IMAGE_DOS_HEADER*)pFile;
//创建指向PE文件头标志的指针
DWORD* peId;
//让PE文件头标志指针指向其对应的地址=DOS首地址+偏移
peId = (DWORD*)((UINT)dos + dos->e_lfanew);
//创建指向可选PE头的第一个成员magic的指针
WORD* magic;
//让magic指针指向其对应的地址=PE文件头标志地址+PE文件头标志大小+标准PE头大小
magic = (WORD*)((UINT)peId + sizeof(DWORD) + sizeof(_IMAGE_FILE_HEADER));
//根据magic判断为32位程序还是64位程序
//让PE文件头指针指向其对应的地址
nt = (_IMAGE_NT_HEADERS*)peId;
//创建指向块表的指针
_IMAGE_SECTION_HEADER* sectionHeader;
//让块表的指针指向其对应的地址
sectionHeader = (_IMAGE_SECTION_HEADER*)((UINT)nt + sizeof(_IMAGE_NT_HEADERS));
//计数，用来计算块表地址
int cnt = 0;
//比较 计数 和 块表的个数，即遍历所有块表
while (cnt < nt->FileHeader.NumberOfSections) {
//创建指向块表的指针
_IMAGE_SECTION_HEADER* section;
//让块表的指针指向其对应的地址=第一个块表地址+计数*块表的大小
section = (_IMAGE_SECTION_HEADER*)((UINT)sectionHeader + sizeof(_IMAGE_SECTION_HEADER) * cnt);
//将得到的块表指针存入数组
sectionArr[cnt++] = section;
}
}
//修正节表的Misc和SizeOfRawData
//第一个参数为指向dos头的指针
//第二个参数为指向nt头的指针
//第三个参数为存储指向节指针的数组
//第四个参数为文件路径
//第五个参数为文件映射
//第六个参数为文件映射内容指针
//第七个参数为要修正的节表在数组中的下标
void sectionAlignment(_IMAGE_DOS_HEADER* dos, _IMAGE_NT_HEADERS* nt, _IMAGE_SECTION_HEADER** sectionArr, LPCSTR filePath, HANDLE* phMap,LPVOID* ppFile, int n) {
//获得最后一个节的实际大小
DWORD VirtualSize = sectionArr[n]->Misc.VirtualSize;
//获得最后一个节的文件对齐后的大小
DWORD SizeOfRawData = sectionArr[n]->SizeOfRawData;
//计算上一个节内存对齐后的大小
UINT SizeInMemory = (UINT)ceil((double)max(VirtualSize, SizeOfRawData) / (double)nt->OptionalHeader.SectionAlignment) * nt->OptionalHeader.SectionAlignment;
printf("%X\n", SizeInMemory);
//计算差值= 内存对齐后大小 - 文件对齐后大小
UINT offset = SizeInMemory - sectionArr[n]->SizeOfRawData;
printf("%X\n", offset);
//根据节在文件中的偏移 + 文件对齐后的大小 得到节的末尾
UINT end = sectionArr[n]->PointerToRawData + sectionArr[n]->SizeOfRawData;
printf("end:%X\n", end);
//申请要填充的空间
INT* content = (INT*)malloc(offset);
//初始化为0
ZeroMemory(content, offset);
//WriteFile用于接收实际写入的大小的参数
DWORD dwWritenSize = 0;
BOOL bRet=appendFile(filePath, (PVOID)content, offset, end,phMap,ppFile);
GetPeStruct32(*ppFile, dos, nt, sectionArr);
if (bRet) {
//开始修正Misc和SizeOfRawData
sectionArr[n]->Misc.VirtualSize = SizeInMemory;
sectionArr[n]->SizeOfRawData = SizeInMemory;
//修正后面受到影响的节的PointerOfRawData和VirtualAddress
int i;
while (n + 1 <= nt->FileHeader.NumberOfSections - 1) {
n++;
sectionArr[n]->PointerToRawData += offset;
}
}
}
int main(int argc, char* argv[])
{
//创建DOS对应的结构体指针
_IMAGE_DOS_HEADER* dos;
//读取文件，返回文件句柄
HANDLE hFile = CreateFileA("C:\\Users\\lyl610abc\\Desktop\\EverEdit\\EverEdit.exe", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0);
//根据文件句柄创建映射
HANDLE hMap = CreateFileMappingA(hFile, NULL, PAGE_READWRITE, 0, 0, 0);
//映射内容
LPVOID pFile = MapViewOfFile(hMap, FILE_SHARE_WRITE, 0, 0, 0);
//类型转换，用结构体的方式来读取
dos = (_IMAGE_DOS_HEADER*)pFile;
//输出dos->e_magic，以十六进制输出
printf("dos->e_magic:%X\n", dos->e_magic);
//创建指向PE文件头标志的指针
DWORD* peId;
//让PE文件头标志指针指向其对应的地址=DOS首地址+偏移
peId = (DWORD*)((UINT)dos + dos->e_lfanew);
//输出PE文件头标志，其值应为4550，否则不是PE文件
printf("peId:%X\n", *peId);
//创建指向可选PE头的第一个成员magic的指针
WORD* magic;
//让magic指针指向其对应的地址=PE文件头标志地址+PE文件头标志大小+标准PE头大小
magic = (WORD*)((UINT)peId + sizeof(DWORD) + sizeof(_IMAGE_FILE_HEADER));
//输出magic，其值为0x10b代表32位程序，其值为0x20b代表64位程序
printf("magic:%X\n", *magic);
//根据magic判断为32位程序还是64位程序
switch (*magic) {
case IMAGE_NT_OPTIONAL_HDR32_MAGIC:
{
printf("32位程序\n");
//确定为32位程序后，就可以使用_IMAGE_NT_HEADERS来接收数据了
//创建指向PE文件头的指针
_IMAGE_NT_HEADERS* nt;
//让PE文件头指针指向其对应的地址
nt = (_IMAGE_NT_HEADERS*)peId;
printf("Machine:%X\n", nt->FileHeader.Machine);
printf("Magic:%X\n", nt->OptionalHeader.Magic);
//创建一个指针数组，该指针数组用来存储所有的节表指针
//这里相当于_IMAGE_SECTION_HEADER* sectionArr[nt->FileHeader.NumberOfSections],声明了一个动态数组
_IMAGE_SECTION_HEADER** sectionArr = (_IMAGE_SECTION_HEADER**)malloc(sizeof(_IMAGE_SECTION_HEADER*) * nt->FileHeader.NumberOfSections);
//创建指向块表的指针
_IMAGE_SECTION_HEADER* sectionHeader;
//让块表的指针指向其对应的地址
sectionHeader = (_IMAGE_SECTION_HEADER*)((UINT)nt + sizeof(_IMAGE_NT_HEADERS));
//计数，用来计算块表地址
int cnt = 0;
//比较 计数 和 块表的个数，即遍历所有块表
while (cnt < nt->FileHeader.NumberOfSections) {
//创建指向块表的指针
_IMAGE_SECTION_HEADER* section;
//让块表的指针指向其对应的地址=第一个块表地址+计数*块表的大小
section = (_IMAGE_SECTION_HEADER*)((UINT)sectionHeader + sizeof(_IMAGE_SECTION_HEADER) * cnt);
//将得到的块表指针存入数组
sectionArr[cnt++] = section;
//输出块表名称
printf("%s\n", section->Name);
}
CloseHandle(hFile);
int i;
//sectionAlignment(dos, nt, sectionArr, "C:\\Users\\lyl610abc\\Desktop\\EverEdit\\EverEdit.exe",hMap, pFile,2);
for (i = 0; i < nt->FileHeader.NumberOfSections; i++) {
sectionAlignment(dos, nt, sectionArr, "C:\\Users\\lyl610abc\\Desktop\\EverEdit\\EverEdit.exe", &hMap, &pFile,i);
}
break;
}
case IMAGE_NT_OPTIONAL_HDR64_MAGIC:
{
printf("64位程序\n");
//确定为64位程序后，就可以使用_IMAGE_NT_HEADERS64来接收数据了
//创建指向PE文件头的指针
_IMAGE_NT_HEADERS64* nt;
nt = (_IMAGE_NT_HEADERS64*)peId;
printf("Machine:%X\n", nt->FileHeader.Machine);
printf("Magic:%X\n", nt->OptionalHeader.Magic);
//创建一个指针数组，该指针数组用来存储所有的节表指针
//这里相当于_IMAGE_SECTION_HEADER* sectionArr[nt->FileHeader.NumberOfSections],声明了一个动态数组
_IMAGE_SECTION_HEADER** sectionArr = (_IMAGE_SECTION_HEADER**)malloc(sizeof(_IMAGE_SECTION_HEADER*) * nt->FileHeader.NumberOfSections);
//创建指向块表的指针
_IMAGE_SECTION_HEADER* sectionHeader;
//让块表的指针指向其对应的地址，区别在于这里加上的偏移为_IMAGE_NT_HEADERS64
sectionHeader = (_IMAGE_SECTION_HEADER*)((UINT)nt + sizeof(_IMAGE_NT_HEADERS64));
//计数，用来计算块表地址
int cnt = 0;
//比较 计数 和 块表的个数，即遍历所有块表
while (cnt < nt->FileHeader.NumberOfSections) {
//创建指向块表的指针
_IMAGE_SECTION_HEADER* section;
//让块表的指针指向其对应的地址=第一个块表地址+计数*块表的大小
section = (_IMAGE_SECTION_HEADER*)((UINT)sectionHeader + sizeof(_IMAGE_SECTION_HEADER) * cnt);
//将得到的块表指针存入数组
sectionArr[cnt++] = section;
//输出块表名称
printf("%s\n", section->Name);
}
break;
}
default:
{
printf("error!\n");
break;
}
}
return 0;
}
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