8.7 父进程检测反调试

#include <Windows.h>
#include <stdio.h>
#include <tlhelp32.h>

int IsDebug()
{
    DWORD ExplorerId = 0;
    PROCESSENTRY32 pe32 = { 0 };
    DWORD ProcessId = GetCurrentProcessId();

    GetWindowThreadProcessId(FindWindow("Progman", NULL), &ExplorerId);

    HANDLE hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, NULL);
    if (hProcessSnap != INVALID_HANDLE_VALUE)
    {
        pe32.dwSize = sizeof(PROCESSENTRY32);
        Process32First(hProcessSnap, &pe32);
        do
        {
            // 先判断是不是我们自己进程的PID
            if (ProcessId == pe32.th32ProcessID)
            {
                // 判断父进程是否是 Explorer.exe
                if (pe32.th32ParentProcessID != ExplorerId)
                {
                    return TRUE;
                }
            }
        } while (Process32Next(hProcessSnap, &pe32));
    }
    return FALSE;
}

int main(int argc, char * argv[])
{
    if (IsDebug())
    {
        printf("[-] 进程正在被调试 \n");
    }

    system("pause");
    return 0;
}