clipcaptcha – CAPTCHA Service Impersonation Tool

Use Netsparker


clipcaptcha is an extensible and signature based CAPTCHA Provider impersonation tool based off Moxie Marlinspike’s sslstrip codebase, which we mentioned back in 2009 – SSLstrip – HTTPS Stripping Attack Tool.

Depending on its mode of operation it may approve, reject or forward the CAPTCHA verification requests. It maintains an easy to edit XML configuration file that it queries to identify CAPTCHA provider request formats and render corresponding responses.

clipcaptcha - CAPTCHA Service Impersonation Tool

Signature based CAPTCHA provider detection

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.

Running clipcaptcha

The four steps to getting this working on Linux are:

1. Enable forwarding mode on your machine

2. Setup iptables to redirect HTTP traffic to clipcaptcha.

3. Run arpspoof to redirect the traffic to your machine.

4. Run clipcaptcha in one of its mode of operation.

Requirements

It requires Python 2.5 or newer, along with the ‘twisted’ python module.

You can download clipcaptcha here:

clipcaptcha-v0.1.zip

Or read more here.

Posted in: Hacking Tools, Networking Hacking, Secure Coding

,


Latest Posts:


HTTP Security Considerations - An Introduction To HTTP Basics HTTP Security Considerations – An Introduction To HTTP Basics
HTTP is ubiquitous now with pretty much everything being powered by an API, a web application or some kind of cloud-based HTTP driven infrastructure. With that HTTP Security becomes paramount and to secure HTTP you have to understand it.
Cangibrina - Admin Dashboard Finder Tool Cangibrina – Admin Dashboard Finder Tool
Cangibrina is a Python-based multi platform admin dashboard finder tool which aims to obtain the location of website dashboards by using brute-force, wordlists etc.
Enumall - Subdomain Discovery Using Recon-ng & AltDNS Enumall – Subdomain Discovery Using Recon-ng & AltDNS
Enumall is a Python-based tool that helps you do subdomain discovery using only one command by combining the abilities of Recon-ng and AltDNS.
RidRelay - SMB Relay Attack For Username Enumeration RidRelay – SMB Relay Attack For Username Enumeration
RidRelay is a Python-based tool to enumerate usernames on a domain where you have no credentials by using a SMB Relay Attack with low privileges.
NetBScanner - NetBIOS Network Scanner NetBScanner – NetBIOS Network Scanner
NetBScanner is a NetBIOS network scanner tool that scans all computers in the IP addresses range you choose, using the NetBIOS protocol.
Metta - Information Security Adversarial Simulation Tool Metta – Information Security Adversarial Simulation Tool
Metta is an information security preparedness tool in Python to help with adversarial simulation and assess security defense preparation and alerts.


Comments are closed.