C，C++，在pc微信进程中写入一个文件，

Question

为什么到OpenProcess就停了，

#include "stdafx.h"
#include "Project1.h"
#include <Windows.h>
#include "resource.h"
#include <TlHelp32.h>
#include<stdio.h>
constexpr auto WECHAT_PROCESS_NAME = "WeChat.exe";

INT_PTR CALLBACK DialogProc(
    HWND Arg1,
    UINT Arg2,
    WPARAM Arg3,
    LPARAM Arg4
);
VOID InjectDll();

int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
                     _In_opt_ HINSTANCE hPrevInstance,
                     _In_ LPWSTR    lpCmdLine,
                     _In_ int       nCmdShow)

{
    DialogBox(hInstance, MAKEINTRESOURCE(ID_MAIN), NULL,&DialogProc);
    return 0;}

INT_PTR CALLBACK DialogProc(
    HWND Arg1,
    UINT Arg2,
    WPARAM Arg3,
    LPARAM Arg4
)
{
    if (Arg2 == WM_INITDIALOG)
    {
        //MessageBox(NULL, "首次加载", "标题", 0);
    }
    if (Arg2 == WM_CLOSE) {
         EndDialog(Arg1, 0);
    }
    if (Arg2 == WM_COMMAND) {
        if (Arg3 == INJECT_DLL) {
            InjectDll();
        }
        if (Arg3 == UIN_DLL) {
        }
    }
    return FALSE;
}
DWORD ProcessNameFindPID(LPCSTR ProcessName) {

    HANDLE ProcessALL=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,NULL);
    PROCESSENTRY32 processInfo = { 0 };
    processInfo.dwSize = sizeof(PROCESSENTRY32);
    do
    {
        if (strcmp(ProcessName, processInfo.szExeFile) == 0) {
            return processInfo.th32ProcessID;
        }
    } while (Process32Next(ProcessALL, &processInfo));

    return 0;
}
VOID InjectDll() {
    CHAR pathStr[0x100] = { "D://wechatdell//Project1//DebugProject1.dll" };
    DWORD PID = ProcessNameFindPID(WECHAT_PROCESS_NAME);
    if (PID == 0)
    {
        MessageBox(NULL, "没有找到微信进程或者微信没有启动", "错误", 0);
        return;
    }
    HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, PID);
    if (NULL == hProcess) {
    }
    {
        MessageBox(NULL, "进程打开失败，可能权限不足或者关闭了应用", "错误", 0);
        return;

    }
    LPVOID  dllAdd =VirtualAllocEx(hProcess, NULL, sizeof(pathStr),MEM_COMMIT,PAGE_READWRITE);
    if (NULL == dllAdd) {
        MessageBox(NULL, "内存分配失败", "错误", 0);
        return;
    }
    if (WriteProcessMemory(hProcess, dllAdd, pathStr, strlen(pathStr), NULL) == 0) {
        MessageBox(NULL, "路径写入失败", "错误", 0);
        return;
    }
    CHAR test[0x100] = { 0 };
    sprintf_s(test, "写入的地址：%p", dllAdd);
    OutputDebugString(test);
}

Answer 1

HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, PID);
调试这里，从提示信息看，是权限不够