raw socket

一个很newbee的例子，可惜还得改

 import sys
 import time

 import socket
 import struct

 import random

 def SendPacketData (Buffer = None , DestIP = "127.0.0.1" , DestPort = 10000) :
     """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__" :
     try:
         SynSendMain()
     except:
         pass