CIntruder: bypass captchas

Introduction

Captcha Intruder is an automatic pentesting tool to bypass captchas.

Installation

Code runs on many platforms. It requires Python and the following libraries:

- python-pycurl - Python bindings to libcurl
- python-libxml2 - Python bindings for the GNOME XML library
- python-imaging - Python Imaging Library

On Debian-based systems (ex: Ubuntu), run:

sudo apt-get install python-pycurl python-libxml2 python-imaging

Usage

cintruder [OPTIONS]

Options:

--version show program's version number and exit
-h, --help show this help message and exit
-v, --verbose active verbose mode output results
--proxy=PROXY use proxy server (tor: http://localhost:8118)
--track=TRACK download a number of captchas from url (to: 'inputs/')
--train=TRAIN apply common OCR techniques to captcha
--crack=CRACK brute force using local dictionary (from: 'iconset/')
--xml export result to xml format

Advanced OCR (training):


--set-id=SETIDS set colour's id manually (use -v for details)
--editor launch an editor to apply image filters

Modules (training):


--list list available modules (from: 'core/mods/')
--mod=NAME train using a specific OCR exploiting module

Handlering (cracking):


--tool=COMMAND replace suggested word on commands of another tool. use
'CINT' marker like flag (ex: 'txtCaptcha=CINT')

CIntruderNet ('http://cintruder.sf.net/cinet'):


--send-net send resolved captcha to CIntruderNet
--view-net visit distributed online dictionary website



Examples

* Simple crack from file:

$ python cintruder --crack "captcha.gif"
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* Simple crack from URL:

$ python cintruder --crack "http://host.com/path/captcha.gif"
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* Simple crack, exporting results to xml file

$ python cintruder --crack "captcha.gif" --xml "test.xml"
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* Simple crack, with proxy TOR and verbose output

$ python cintruder --crack "http://host.com/path/captcha.gif" --proxy="http://127.0.0.1:8118" -v
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* Train captcha(s) from url, with proxy TOR and verbose output

$ python cintruder --train "http://host.com/path/captcha.gif" --proxy "http://127.0.0.1:8118" -v
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* Track 50 captcha(s) from url with proxy TOR

$ python cintruder --track "http://host.com/path/captcha.gif" "50" --proxy "http://127.0.0.1:8118"
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* List available modules (from core/mods/)

$ python cintruder --list
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* Launch an OCR module to train a specific local captcha

$ python cintruder --train "inputs/easycaptcha.gif" --mod easy
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* Launch an OCR module to crack a specific online captcha, with verbose output

$ python cintruder --crack "http://host.com/path/captcha.gif" --mod easy -v
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* Replace suggested word by CIntruder after cracking, on input commands of another tool (ex: XSSer)

$ python cintruder --crack "http://host.com/path/captcha.gif" --tool "xsser -u http://host.com/path/param1=foo¶m2=bar&txtCaptcha=CINT"
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* Send online captcha cracked to distributed online dictionary (CInet)

$ python cintruder --crack "http://host.com/path/captcha.gif" --send-net
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* Visit distributed online dictionary (CInet) website (http://cintruder.sf.net/cinet)

$ python cintruder --view-net

WebSite : http://cintruder.sourceforge.net/