Да, это возможно.Получите дескриптор, выделите некоторую память для процесса, запишите туда имя dll и, наконец, создайте поток, который вызовет LoadLibraryA и загрузите вашу dll.
Кроме того, проверьте комментарии в коде и обратитесь к«Теория» часть этой статьи всякий раз, когда вы чувствуете необходимость.
Dll:
#include<Windows.h>
extern "C" __declspec(dllexport) bool WINAPI DllMain(HINSTANCE hInstDll, DWORD fdwReason, LPVOID lpvReserved)
{
switch (fdwReason)
{
case DLL_PROCESS_ATTACH:
{
MessageBox(NULL, "Hello World!", "Dll says:", MB_OK);
break;
}
case DLL_PROCESS_DETACH:
break;
case DLL_THREAD_ATTACH:
break;
case DLL_THREAD_DETACH:
break;
}
return true;
}
Инжектор:
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Text;
public class BasicInject
{
[DllImport("kernel32.dll")]
public static extern IntPtr OpenProcess(int dwDesiredAccess, bool bInheritHandle, int dwProcessId);
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr GetModuleHandle(string lpModuleName);
[DllImport("kernel32", CharSet = CharSet.Ansi, ExactSpelling = true, SetLastError = true)]
static extern IntPtr GetProcAddress(IntPtr hModule, string procName);
[DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)]
static extern IntPtr VirtualAllocEx(IntPtr hProcess, IntPtr lpAddress, uint dwSize, uint flAllocationType, uint flProtect);
[DllImport("kernel32.dll", SetLastError = true)]
static extern bool WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, byte[] lpBuffer, uint nSize, out UIntPtr lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
static extern IntPtr CreateRemoteThread(IntPtr hProcess, IntPtr lpThreadAttributes, uint dwStackSize, IntPtr lpStartAddress, IntPtr lpParameter, uint dwCreationFlags, IntPtr lpThreadId);
// privileges
const int PROCESS_CREATE_THREAD = 0x0002;
const int PROCESS_QUERY_INFORMATION = 0x0400;
const int PROCESS_VM_OPERATION = 0x0008;
const int PROCESS_VM_WRITE = 0x0020;
const int PROCESS_VM_READ = 0x0010;
// used for memory allocation
const uint MEM_COMMIT = 0x00001000;
const uint MEM_RESERVE = 0x00002000;
const uint PAGE_READWRITE = 4;
public static int Main()
{
// the target process - I'm using a dummy process for this
// if you don't have one, open Task Manager and choose wisely
Process targetProcess = Process.GetProcessesByName("testApp")[0];
// geting the handle of the process - with required privileges
IntPtr procHandle = OpenProcess(PROCESS_CREATE_THREAD | PROCESS_QUERY_INFORMATION | PROCESS_VM_OPERATION | PROCESS_VM_WRITE | PROCESS_VM_READ, false, targetProcess.Id);
// searching for the address of LoadLibraryA and storing it in a pointer
IntPtr loadLibraryAddr = GetProcAddress(GetModuleHandle("kernel32.dll"), "LoadLibraryA");
// name of the dll we want to inject
string dllName = "test.dll";
// alocating some memory on the target process - enough to store the name of the dll
// and storing its address in a pointer
IntPtr allocMemAddress = VirtualAllocEx(procHandle, IntPtr.Zero, (uint)((dllName.Length + 1) * Marshal.SizeOf(typeof(char))), MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
// writing the name of the dll there
UIntPtr bytesWritten;
WriteProcessMemory(procHandle, allocMemAddress, Encoding.Default.GetBytes(dllName), (uint)((dllName.Length + 1) * Marshal.SizeOf(typeof(char))), out bytesWritten);
// creating a thread that will call LoadLibraryA with allocMemAddress as argument
CreateRemoteThread(procHandle, IntPtr.Zero, 0, loadLibraryAddr, allocMemAddress, 0, IntPtr.Zero);
return 0;
}
}
Источник: http://www.codingvision.net/miscellaneous/c-inject-a-dll-into-a-process-w-createremotethread