Python Raw Socket使用示

发布时间：2019-08-26 08:43:44编辑：auto阅读（2309）

import sys
import time

import socket
import struct

import random

def SendPacketData (Buffer = None , DestIP = "127.0.0.1" , DestPort = 0) :
    """SendPacketData"""
    
    if Buffer is None :
        return False
    
    try:
        Socket = socket.socket(socket.AF_INET,socket.SOCK_RAW)
        Socket.setsockopt(socket.IPPROTO_IP,socket.IP_HDRINCL,1)
        Socket.setsockopt(socket.SOL_SOCKET,socket.SO_SNDTIMEO,2000)
 
    except:
        Socket.close()
        return False
    
    try:
        Socket.sendto(Buffer,0,(DestIP , DestPort))
            
    except:
        Socket.close()
            
    return True

def SetPacketAddress (Number = 1) :
    """SetPakcetAddress"""
        
    return [".".join(["%d" % random.randint(1 , 0xFF) for i in range(0,4)]) for n in range(0 , Number)]

def SetPacketData (Length = 32) :
    """SetPacketData"""

    return "".join(["%s" % chr(random.randint(0 , 255)) for n in range(Length)])

def SetPacketCheckSum (Buffer = None) :
    """SetPacketCheckSum"""
    
    if Buffer == None :
        return False
    
    if len(Buffer) % 2 :
        Buffer += '/0'

    return ~sum([(ord(Buffer[n + 1]) << 8) + ord(Buffer[n]) for n in range(0 , len(Buffer) , 2)])
#or return ~sum([ord(Buffer[n]) + ord(Buffer[n + 1]) * 256  for n in range(0 , len(Buffer) , 2)])

def SynSendInit (DestIP = "127.0.0.1" , DestPort = 80) :
    """SynSendInit"""
    
    IpHdrLen = 20
    TcpHdrLen = 20
    
    IpVerlen    = (4 << 4 | IpHdrLen / 4)
    IpTotal_len = socket.htons(IpHdrLen + TcpHdrLen)
    
    IpDestIP = struct.unpack('i',socket.inet_aton(DestIP))[0]
    IpSourceIP = struct.unpack('i',socket.inet_aton(SetPacketAddress()[0]))[0]
    
    TcpSport = socket.htons(random.randint(1024 , 65000))
    TcpDport = socket.htons(DestPort)
    
    TcpLenres = (TcpHdrLen / 4 << 4 | 0)
    TcpSeq = socket.htonl(int(time.time()))
    
    Buffer = struct.pack("LLBBHHHLLBBHHH",IpSourceIP,IpDestIP,0,socket.IPPROTO_TCP,socket.htons(TcpHdrLen)
                                         ,TcpSport,TcpDport,TcpSeq,0,TcpLenres,2,socket.htons(8192),0,0)
    TcpChecksum = SetPacketCheckSum(Buffer)
    
    Buffer = struct.pack("BBHHHBBHLL",IpVerlen,0,IpTotal_len,1,0x40,255,socket.IPPROTO_TCP,0,IpSourceIP,IpDestIP)
    IpChecksum = SetPacketCheckSum(Buffer)
    
    tcpcsp = struct.pack("L",TcpChecksum)
    ipcsp = struct.pack("L",IpChecksum)
    
    return struct.pack("BBHHHBBHLLHHLLBBHHH",IpVerlen,0,IpTotal_len,1,0x40,255,socket.IPPROTO_TCP
                                            ,(ord(ipcsp[1]) << 8) + ord(ipcsp[0]),IpSourceIP,IpDestIP
                                            ,TcpSport,TcpDport,TcpSeq,0,TcpLenres,2,socket.htons(8192)
                                            ,(ord(tcpcsp[1]) << 8) + ord(tcpcsp[0]),0)

def SynSendMain (DestIP = "127.0.0.1" , DestPort = 80) :
    """SynSendMain"""
    
    return SendPacketData(SynSendInit(DestIP , DestPort) , DestIP , DestPort)

if __name__ == "__main__" :
    SynSendMain()

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