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Refactors utils.py and tools/*

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This commit is contained in:
jvoisin 2016-07-05 01:07:24 +02:00
parent 8e9205b102
commit 2fb6a1c228
15 changed files with 123 additions and 273 deletions
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50
tools/DHCP.py
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@ -16,8 +16,6 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys
import struct
import socket
import re
import optparse
import ConfigParser
import os
@ -46,16 +44,13 @@ def color(txt, code = 1, modifier = 0):
if options.Interface is None:
print color("[!]", 1, 1), "-I mandatory option is missing, please provide an interface."
exit(-1)
if options.RouterIP is None:
elif options.RouterIP is None:
print color("[!]", 1, 1), "-r mandatory option is missing, please provide the router's IP."
exit(-1)
if options.DNSIP is None:
elif options.DNSIP is None:
print color("[!]", 1, 1), "-p mandatory option is missing, please provide the primary DNS server ip address or yours."
exit(-1)
if options.DNSIP2 is None:
elif options.DNSIP2 is None:
print color("[!]", 1, 1), "-s mandatory option is missing, please provide the secondary DNS server ip address or yours."
exit(-1)
@ -230,22 +225,15 @@ def SpoofIP(Spoof):
return ROUTERIP if Spoof else Responder_IP
def RespondToThisIP(ClientIp):
if ClientIp.startswith('127.0.0.'):
return False
if len(RespondTo) and ClientIp not in RespondTo:
elif RespondTo and ClientIp not in RespondTo:
return False
if ClientIp in RespondTo or RespondTo == []:
elif ClientIp in RespondTo or RespondTo == []:
if ClientIp not in DontRespondTo:
return True
return False
def IsUDP(data):
return True if data[0][23:24] == "\x11" else False
def ParseSrcDSTAddr(data):
SrcIP = socket.inet_ntoa(data[0][26:30])
DstIP = socket.inet_ntoa(data[0][30:34])
@ -254,7 +242,7 @@ def ParseSrcDSTAddr(data):
return SrcIP, SrcPort, DstIP, DstPort
def FindIP(data):
IP = ''.join(re.findall('(?<=\x32\x04)[^EOF]*', data))
IP = ''.join(re.findall(r'(?<=\x32\x04)[^EOF]*', data))
return ''.join(IP[0:4])
def ParseDHCPCode(data):
@ -270,21 +258,17 @@ def ParseDHCPCode(data):
# DHCP Inform
if OpCode == "\x08":
IP_Header = IPHead(SrcIP = socket.inet_aton(SpoofIP(Spoof)), DstIP=socket.inet_aton(CurrentIP))
Packet = DHCPInformACK(Tid=PTid, ClientMac=MacAddr, ActualClientIP=socket.inet_aton(CurrentIP), \
GiveClientIP=socket.inet_aton("0.0.0.0"), \
NextServerIP=socket.inet_aton("0.0.0.0"), \
RelayAgentIP=socket.inet_aton("0.0.0.0"), \
Packet = DHCPInformACK(Tid=PTid, ClientMac=MacAddr, ActualClientIP=socket.inet_aton(CurrentIP),
GiveClientIP=socket.inet_aton("0.0.0.0"),
NextServerIP=socket.inet_aton("0.0.0.0"),
RelayAgentIP=socket.inet_aton("0.0.0.0"),
ElapsedSec=Seconds)
Packet.calculate()
Buffer = UDP(Data = Packet)
Buffer.calculate()
SendDHCP(str(IP_Header)+str(Buffer), (CurrentIP, 68))
return 'Acknowledged DHCP Inform for IP: %s, Req IP: %s, MAC: %s Tid: %s' % (CurrentIP, RequestedIP, MacAddrStr, '0x'+PTid.encode('hex'))
# DHCP Request
if OpCode == "\x03" and Respond_To_Requests:
elif OpCode == "\x03" and Respond_To_Requests: # DHCP Request
IP = FindIP(data)
if IP:
IPConv = socket.inet_ntoa(IP)
@ -292,16 +276,11 @@ def ParseDHCPCode(data):
IP_Header = IPHead(SrcIP = socket.inet_aton(SpoofIP(Spoof)), DstIP=IP)
Packet = DHCPACK(Tid=PTid, ClientMac=MacAddr, GiveClientIP=IP, ElapsedSec=Seconds)
Packet.calculate()
Buffer = UDP(Data = Packet)
Buffer.calculate()
SendDHCP(str(IP_Header)+str(Buffer), (IPConv, 68))
return 'Acknowledged DHCP Request for IP: %s, Req IP: %s, MAC: %s Tid: %s' % (CurrentIP, RequestedIP, MacAddrStr, '0x'+PTid.encode('hex'))
# DHCP Discover
if OpCode == "\x01" and Respond_To_Requests:
elif OpCode == "\x01" and Respond_To_Requests: # DHCP Discover
IP = FindIP(data)
if IP:
IPConv = socket.inet_ntoa(IP)
@ -309,12 +288,9 @@ def ParseDHCPCode(data):
IP_Header = IPHead(SrcIP = socket.inet_aton(SpoofIP(Spoof)), DstIP=IP)
Packet = DHCPACK(Tid=PTid, ClientMac=MacAddr, GiveClientIP=IP, DHCPOpCode="\x02", ElapsedSec=Seconds)
Packet.calculate()
Buffer = UDP(Data = Packet)
Buffer.calculate()
SendDHCP(str(IP_Header)+str(Buffer), (IPConv, 0))
return 'Acknowledged DHCP Discover for IP: %s, Req IP: %s, MAC: %s Tid: %s' % (CurrentIP, RequestedIP, MacAddrStr, '0x'+PTid.encode('hex'))
def SendDHCP(packet,Host):
@ -329,7 +305,7 @@ if __name__ == "__main__":
while True:
try:
data = s.recvfrom(65535)
if IsUDP(data):
if data[0][23:24] == "\x11": # is udp?
SrcIP, SrcPort, DstIP, DstPort = ParseSrcDSTAddr(data)
if SrcPort == 67 or DstPort == 67: