/usr/share/w3af/plugins/discovery/digitSum.py is in w3af-console 1.0-rc3svn3489-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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digitSum.py
Copyright 2006 Andres Riancho
This file is part of w3af, w3af.sourceforge.net .
w3af 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 version 2 of the License.
w3af 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.
You should have received a copy of the GNU General Public License
along with w3af; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
'''
import core.controllers.outputManager as om
# options
from core.data.options.option import option
from core.data.options.optionList import optionList
from core.controllers.basePlugin.baseDiscoveryPlugin import baseDiscoveryPlugin
from core.controllers.w3afException import w3afException
from core.controllers.misc.levenshtein import relative_distance
import core.data.parsers.urlParser as urlParser
from core.data.db.temp_persist import disk_list
from core.controllers.coreHelpers.fingerprint_404 import is_404
import re
class digitSum(baseDiscoveryPlugin):
'''
Take an URL with a number ( index2.asp ) and try to find related files (index1.asp, index3.asp).
@author: Andres Riancho ( andres.riancho@gmail.com )
'''
def __init__(self):
baseDiscoveryPlugin.__init__(self)
self._already_visited = disk_list()
self._first_time = True
# This is for the Referer
self._headers = {}
# User options
self._fuzz_images = False
self._max_digit_sections = 4
def discover(self, fuzzableRequest ):
'''
Searches for new Url's by adding and substracting numbers to the url and the parameters.
@parameter fuzzableRequest: A fuzzableRequest instance that contains (among other things) the URL to test.
'''
self._fuzzableRequests = []
url = fuzzableRequest.getURL()
self._headers = {'Referer':url}
if self._first_time:
self._first_time = False
om.out.debug('digitSum is testing ' + fuzzableRequest.getURL() )
original_response = self._urlOpener.GET( fuzzableRequest.getURL(), \
useCache=True, headers=self._headers )
if original_response.is_text_or_html() or self._fuzz_images:
for fr in self._mangle_digits( fuzzableRequest ):
if fr.getURL() not in self._already_visited:
self._already_visited.append( fr.getURI() )
targs = ( fr, original_response)
self._tm.startFunction( target=self._do_request, args=targs , ownerObj=self )
# Wait for all threads to finish
self._tm.join( self )
# I add myself so the next call to this plugin wont find me ...
# Example: index1.html ---> index2.html --!!--> index1.html
self._already_visited.append( fuzzableRequest.getURI() )
return self._fuzzableRequests
def _do_request( self, fuzzableRequest, original_response ):
'''
Send the request.
@parameter fuzzableRequest: The fuzzable request object to modify.
@parameter original_response: The response for the original request that was sent.
'''
try:
response = self._urlOpener.GET( fuzzableRequest.getURI(), useCache=True,
headers=self._headers )
except KeyboardInterrupt,e:
raise e
else:
if not is_404( response ):
# We have two different cases:
# - If the URL's are different, then there is nothing to think about, we simply found
# something new!
#
# - If we changed the query string parameters, we have to check the content
is_new = False
if response.getURL() != original_response.getURL():
is_new = True
elif relative_distance(response.getBody(), original_response.getBody()) < 0.70:
is_new = True
# Add it to the result.
if is_new:
self._fuzzableRequests.extend( self._createFuzzableRequests( response ) )
om.out.debug('digitSum plugin found new URI: "' + fuzzableRequest.getURI() + '".')
def _mangle_digits(self, fuzzableRequest):
'''
Mangle those digits.
@param fuzzableRequest: The original fuzzableRequest
@return: A list of fuzzableRequests.
'''
res = []
# First i'll mangle the digits in the URL file
filename = urlParser.getFileName( fuzzableRequest.getURL() )
domain_path = urlParser.getDomainPath( fuzzableRequest.getURL() )
for fname in self._do_combinations( filename ):
fr_copy = fuzzableRequest.copy()
fr_copy.setURL( domain_path + fname)
res.append( fr_copy )
# Now i'll mangle the query string variables
if fuzzableRequest.getMethod() == 'GET':
for parameter in fuzzableRequest.getDc():
# to support repeater parameter names...
for element_index in xrange(len(fuzzableRequest.getDc()[parameter])):
for modified_value in self._do_combinations( fuzzableRequest.getDc()[ parameter ][element_index] ):
fr_copy = fuzzableRequest.copy()
new_dc = fr_copy.getDc()
new_dc[ parameter ][ element_index ] = modified_value
fr_copy.setDc( new_dc )
res.append( fr_copy )
return res
def _do_combinations( self, a_string ):
'''
Example:
- input: 'abc123'
- output: ['abc122','abc124']
Example:
- input: 'abc123def01'
- output: ['abc122def01','abc124def01','abc123def00','abc123def02']
'''
res = []
splitted = self._find_digits( a_string )
if len( splitted ) <= 2 * self._max_digit_sections:
for i in xrange( len( splitted ) ):
if splitted[ i ].isdigit():
splitted[ i ] = str( int(splitted[ i ]) + 1 )
res.append( ''.join(splitted) )
splitted[ i ] = str( int(splitted[ i ]) - 2 )
res.append( ''.join(splitted) )
splitted[ i ] = str( int(splitted[ i ]) + 1 )
return res
def _find_digits( self, a_string ):
'''
Finds digits in a string and returns a list with string sections.
For example:
- input: 'foob45'
- output: ['foo', '45']
Another example:
- input: 'f001bar112'
- output: ['f', '00', 'bar', '112']
@return: A list of strings.
'''
# regexes are soooooooooooooo cool !
return [ x for x in re.split( r'(\d+)', a_string ) if x != '' ]
def getOptions( self ):
'''
@return: A list of option objects for this plugin.
'''
d1 = 'Apply URL fuzzing to all URLs, including images, videos, zip, etc.'
h1 = 'It\'s safe to leave this option as the default.'
o1 = option('fuzzImages', self._fuzz_images, d1, 'boolean', help=h1)
d2 = 'Set the top number of sections to fuzz'
h2 = 'It\'s safe to leave this option as the default. For example, with maxDigitSections'
h2 += ' = 1, this string wont be fuzzed: abc123def234 ; but this one will abc23ldd.'
o2 = option('maxDigitSections', self._max_digit_sections, d2, 'integer', help=h2)
ol = optionList()
ol.add(o1)
ol.add(o2)
return ol
def setOptions( self, optionsMap ):
'''
This method sets all the options that are configured using the user interface
generated by the framework using the result of getOptions().
@parameter OptionList: A dictionary with the options for the plugin.
@return: No value is returned.
'''
self._fuzz_images = optionsMap['fuzzImages'].getValue()
self._max_digit_sections = optionsMap['maxDigitSections'].getValue()
def getPluginDeps( self ):
'''
@return: A list with the names of the plugins that should be runned before the
current one.
'''
return []
def getLongDesc( self ):
'''
@return: A DETAILED description of the plugin functions and features.
'''
return '''
This plugin tries to find new URL's by changing the numbers that are present on it.
Two configurable parameters exist:
- fuzzImages
- maxDigitSections
An example will clarify what this plugin does, let's suppose that the input for this plugin is:
- http://host.tld/index1.asp
This plugin will request:
- http://host.tld/index0.asp
- http://host.tld/index2.asp
If the response for the newly generated URL's is not an 404 error, then the new URL is a valid one that
can contain more information and injection points.
'''
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