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c++ - 使用winapi查找进程ID和基地址

问题描述

我正在 Code::Blocks 中编写一个程序，它只会打印应用程序的进程 ID 和基地址。PID 已正确找到，但我在使用基地址时遇到了困难，我也在使用 GNU GCC 编译器（x64）。我的猜测是错误在于HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE | TH32CS_SNAPMODULE32, procId);因为它返回INVALID_HANDLE_VALUE. 但我仍然无法解决这个问题。IDE 不显示任何错误或警告。GetLastError() 返回 5（拒绝访问）

控制台输出：
Process ID = 2656 INVALID_HANDLE_VALUE returned BaseAddr = 0

这是完整的代码：

#include <iostream>
#include <Windows.h>
#include <tlhelp32.h>
#include <string.h>

DWORD GetProcId(const char* procName)
{
    DWORD procId = 0;
    HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (hSnap != INVALID_HANDLE_VALUE)
    {
        PROCESSENTRY32 procEntry;
        procEntry.dwSize = sizeof(procEntry);

        if (Process32First(hSnap, &procEntry))
        {
            do
            {
                if (lstrcmpi(procEntry.szExeFile, procName) == 0) {
                    procId = procEntry.th32ProcessID;
                    break;
                }
            } while (Process32Next(hSnap, &procEntry));

        }
    }
    CloseHandle(hSnap);
    return procId;
}

uintptr_t GetModuleBaseAddress(DWORD procId, const char* modName)
{
    uintptr_t modBaseAddr = 0;
    HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE | TH32CS_SNAPMODULE32, procId);
    if (hSnap != INVALID_HANDLE_VALUE)
    {
        MODULEENTRY32 modEntry;
        modEntry.dwSize = sizeof(modEntry);
        if (Module32First(hSnap, &modEntry))
        {
            do
            {
                if (!_stricmp(modEntry.szModule, modName))
                {
                    modBaseAddr = (uintptr_t)modEntry.modBaseAddr;
                    break;
                }
            } while (Module32Next(hSnap, &modEntry));
        }
    } else {
        std::cout << "INVALID_HANDLE_VALUE returned" << std::endl;
    }
    CloseHandle(hSnap);
    return modBaseAddr;
}

int main()
{
    DWORD procId = GetProcId("Game.exe");

    std::cout << "Process ID = " << procId << std::endl;

    uintptr_t baseAddr = GetModuleBaseAddress(procId, "Game.exe");

    std::cout << "BaseAddr = " << baseAddr << std::endl;

    std::getchar();
    return 0;
}

标签： c++winapi

解决方案

好吧，在将它放入代码块之后，我只是将 GetModuleBaseAddress 函数中的 _stricmp 更改为 strcmp 也是这一行

HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE | TH32CS_SNAPMODULE32, procId);

对此

HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, procId);

试试这个代码：

#include <windows.h>
#include <tlhelp32.h>
#include <string>
#include <iostream>
using namespace std;
HANDLE _process = NULL;
DWORD pid = 0;
DWORD baseAddr = 0;
bool getID(string process)
{
    HANDLE hHandle = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
    PROCESSENTRY32 entry;
    entry.dwSize = sizeof(entry);
    do
    {
        if(!strcmp(entry.szExeFile,process.c_str()))
        {
            pid = entry.th32ProcessID;
            CloseHandle(hHandle);
            _process = OpenProcess(PROCESS_ALL_ACCESS,false,pid);
            return true;
        }
    } while(Process32Next(hHandle,&entry));
    return false;
}
bool getModuleBaseAddress(string module)
{
    HANDLE hHandle = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE,pid);
    MODULEENTRY32 mentry;
    mentry.dwSize = sizeof(mentry);
    do
    {
        if(!strcmp(mentry.szModule,module.c_str()))
        {
            CloseHandle(hHandle);
            baseAddr = (DWORD)mentry.modBaseAddr;
            return true;
        }
    } while(Module32Next(hHandle,&mentry));
    return false;
}

int main()
{
    while(!getID("popo.exe")) {Sleep(10);}
    while(!getModuleBaseAddress("popo.exe")) {Sleep(10);}
    cout << "PID: " << pid << endl << "Base Address: " << baseAddr;
    return 0;
}

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