clone.py
#!/usr/bin/env python3
"""
Copyright (C) 2015-2016 MushMush Foundation
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
"""
import re
import os
import sys
from urllib.parse import urlparse, unquote
import asyncio
import argparse
import aiohttp
import cssutils
from bs4 import BeautifulSoup
clast Cloner(object):
@staticmethod
def make_new_link(url):
unquote(url)
parsed = urlparse(url)
if parsed.path[1:]:
new_link = parsed.path
elif parsed.query:
new_link = '/' + parsed.query
else:
new_link = '/index'
if new_link[-1] == '/':
new_link = new_link[:-1]
if '.' not in new_link:
new_link += '.html'
if parsed.fragment:
new_link += '/#' + parsed.fragment
if parsed.query:
new_link += '?' + parsed.query
return new_link
def replace_links(self, data, domain, urls):
soup = BeautifulSoup(data, 'html.parser')
patt = '.*' + domain + '.*'
# find all relative links
for link in soup.findAll(True, attrs={'href': re.compile('^((?!http|\/\/|\.\.).)*$')}):
if link['href'].startswith('/'):
link['href'] = link['href'][1:]
abs_link = 'http://' + domain + link['href']
urls.append(abs_link)
# find all absolute links
for link in soup.findAll(True, attrs={'href': re.compile(patt)}):
urls.append(link['href'])
link['href'] = self.make_new_link(link['href'])
# find all images and scripts
for elem in soup.findAll(True, attrs={'src': re.compile('^((?!http|\/\/|\.\.).)*$')}):
abs_link = 'http://' + domain + elem['src']
urls.append(abs_link)
# find all action elements
for act_link in soup.findAll(True, attrs={'action': re.compile(patt)}):
urls.append(act_link['action'])
act_link['action'] = self.make_new_link(act_link['action'])
# prevent redirects
for redir in soup.findAll(True, attrs={'name': re.compile('redirect.*')}):
redir['value'] = self.make_new_link(redir['value'])
urls = list(set(urls))
return soup
@asyncio.coroutine
def get_body(self, root_url, urls, visited_urls):
if not root_url.startswith("http"):
root_url = 'http://' + root_url
visited_urls.append(root_url)
parsed_url = urlparse(root_url)
if parsed_url.fragment:
return
domain = parsed_url.netloc
if not domain.endswith('/'):
domain += '/'
file_name = self.make_new_link(root_url)
file_path = ''
patt = '/.*/.*\.'
if re.match(patt, file_name):
file_path, file_name = file_name.rsplit('/', 1)
file_path += '/'
print('path: ', file_path, 'name: ', file_name)
if len(domain) < 4:
sys.exit('invalid taget {}'.format(root_url))
page_path = '/opt/snare/pages/{}'.format(domain)
if not os.path.exists(page_path):
os.mkdir(page_path)
if file_path and not os.path.exists(page_path + file_path):
os.makedirs(page_path + file_path)
data = None
try:
with aiohttp.Timeout(10.0):
with aiohttp.ClientSession() as session:
response = yield from session.get(root_url)
data = yield from response.read()
except Exception as e:
print(e)
else:
response.release()
session.close()
if data is not None:
if re.match(re.compile('.*\.(html|php)'), file_name):
soup = self.replace_links(data, domain, urls)
data = str(soup).encode()
with open(page_path + file_path + file_name, 'wb') as index_fh:
index_fh.write(data)
if '.css' in file_name:
css = cssutils.parseString(data)
for carved_url in cssutils.getUrls(css):
if carved_url.startswith('data'):
continue
carved_url = os.path.normpath(os.path.join(domain, carved_url))
if not carved_url.startswith('http'):
if carved_url.startswith('..') or carved_url.startswith('/'):
carved_url = 'http://' + domain + carved_url
else:
carved_url = 'http://' + carved_url
if carved_url not in visited_urls:
urls.insert(0, carved_url)
for url in urls:
urls.remove(url)
if url in visited_urls:
continue
yield from self.get_body(url, urls, visited_urls)
@asyncio.coroutine
def run(self, url):
return (yield from self.get_body(url, [], []))
def main():
if os.getuid() != 0:
print('Clone has to be run as root!')
sys.exit(1)
if not os.path.exists('/opt/snare'):
os.mkdir('/opt/snare')
if not os.path.exists('/opt/snare/pages'):
os.mkdir('/opt/snare/pages')
loop = asyncio.get_event_loop()
parser = argparse.ArgumentParser()
parser.add_argument("--target", help="domain of the page to be cloned", required=True)
args = parser.parse_args()
c = Cloner()
loop.run_until_complete(c.run(args.target))
if __name__ == '__main__':
main()
