fqrouter

function consolidate() {
  var sheets = SpreadsheetApp.getActiveSpreadsheet().getSheets();
  var routers = {};
  var routerIps = [];
  for (var i = 0; i < sheets.length; i++) {
    var sheet = sheets[i];
    if (0 == sheet.getName().indexOf('__')) {
      continue;
    }
    var values = sheet.getDataRange().getValues();

fqrouter

send(IP(dst=8.8.8.8) / TCP(dport=53, flags='S', seq=0))
offending_payload = str(DNS(rd=1, qd=DNSQR(qname="dl.dropbox.com")))
offending_payload = struct.pack("!H", len(offending_payload)) + offending_payload
send(IP(dst=8.8.8.8) / TCP(dport=53, flags='A', seq=1, ack=100) / Raw(offending_payload))

fqrouter

class L2Sniffer(threading.Thread):
    def __init__(self, iface, src, dst, no_filter=False):
        super(L2Sniffer, self).__init__()
        self.daemon = True
        self.no_filter = no_filter
        self.iface = iface
        self.src = src
        self.dst = dst
        self.started = threading.Event()
        self.started.clear()

fqrouter

ERROR_NO_DATA = 11

class L3Sniffer(threading.Thread):
    def __init__(self, src, dst):
        super(L3Sniffer, self).__init__()
        self.daemon = True
        self.src = src
        self.dst = dst
        self.started = threading.Event()
        self.started.clear()

fqrouter

class TcpdumpSniffer(object):
    def __init__(self, iface, src, dst):
        self.iface = iface
        self.src = src
        self.dst = dst
        self.packets = []
 
    def start_sniffing(self):
        self.pcap_file_path = tempfile.mktemp()
        filter = '(dst host %s and src host %s) or icmp' % (self.src, self.dst)

fqrouter

@contextlib.contextmanager
def capture(ifname, src, dst):
    events = []
    filter = '(host %s and host %s) or icmp[0] = 11' % (src, dst)
    p = subprocess.Popen(
        ['tcpdump', '-i', ifname, '-w', '-', filter],
        stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
    try:
        yield events
    finally:

fqrouter

#!/usr/bin/env python
import socket
import re
import struct
import random
import sys

# Generate random ip from ip range of specific network carrier
# It is useful because for same carrier, GFW tend to install device in a very narrow ip range
# There are at least 6 major network carriers in China which have GFW attached to its boarder gateway

fqrouter

import socket
import dpkt
import sys

dst = sys.argv[1]
sport1 = 8080
sport2 = 8081
icmp_socket = sock = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_ICMP)
icmp_socket.settimeout(2)
trace = []

fqrouter

import socket
import dpkt.ip
import dpkt.dns
import sys
import os

dst = sys.argv[1]
udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
udp_socket.settimeout(2)
icmp_socket = sock = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_ICMP)

fqrouter

from scapy.all import *
import time
dst = sys.argv[1]
src = ''
for ttl in range(1, 15):
    send(IP(dst=dst,src=src,id=ttl,ttl=ttl)/UDP()/DNS(rd=1,qd=DNSQR(qname="www.twitter.com")))
    send(IP(dst=dst,src=src,id=ttl,ttl=ttl)/TCP(dport=80,sport=8081)) # 非必要参照物
    time.sleep(2)