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'''
shiftOutShiftInBetweenDots.py
Copyright 2008 Jose Ramon Palanco
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
'''
from core.controllers.basePlugin.baseEvasionPlugin import baseEvasionPlugin
from core.controllers.w3afException import w3afException
import core.data.parsers.urlParser as urlParser
# options
from core.data.options.option import option
from core.data.options.optionList import optionList
import urllib2
class shiftOutShiftInBetweenDots(baseEvasionPlugin):
'''
Insert between dots shift-in and shift-out control characters which are cancelled each other when they are below
@author: Jose Ramon Palanco( jose.palanco@hazent.com )
'''
def __init__(self):
baseEvasionPlugin.__init__(self)
def modifyRequest(self, request ):
'''
Mangles the request
@parameter request: urllib2.Request instance that is going to be modified by the evasion plugin
'''
# We mangle the URL
path = urlParser.getPathQs( request.get_full_url() )
path = path.replace('/../','/.%0E%0F./' )
# Finally, we set all the mutants to the request in order to return it
url = urlParser.getProtocol( request.get_full_url() )
url += '://' + urlParser.getNetLocation( request.get_full_url() ) + path
new_req = urllib2.Request( url , request.get_data(), request.headers,
request.get_origin_req_host() )
return new_req
def getOptions( self ):
'''
@return: A list of option objects for this plugin.
'''
ol = optionList()
return ol
def setOptions( self, OptionList ):
'''
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.
'''
pass
def getPluginDeps( self ):
'''
@return: A list with the names of the plugins that should be runned before the
current one.
'''
return []
def getPriority( self ):
'''
This function is called when sorting evasion plugins.
Each evasion plugin should implement this.
@return: An integer specifying the priority. 100 is runned first, 0 last.
'''
return 20
def getLongDesc( self ):
'''
@return: A DETAILED description of the plugin functions and features.
'''
return r'''
This evasion plugin insert between dots shift-in and shift-out control
characters which are cancelled each other when they are below so some
".." filters are bypassed
Example:
Input: '../../../../../../../../etc/passwd'
Output: '.%0E%0F./.%0E%0F./.%0E%0F./.%0E%0F./.%0E%0F./.%0E%0F./.%0E%0F./.%0E%0F./etc/passwd'
'''
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