Categories
Web Application Security

Introduction to Burp Suite Pro

Burp Suite is, as far as I’m concerned, the de facto tool for Web Application Assessments. It’s simple to use and takes little time to get the hang of, but to make sure you’re making the most out of your toolset, I thought I’d post a quick introduction to run through the main tabs and features.

Burp Suite is a man-in-the-middle proxy which can intercept HTTP/HTTPS data from web browsers and mobile applications and allow you to read, modify, and repeat requests to servers. It can detect and monitor WebSockets. It’s ideal for testing for a range of security issues within applications. It can automate many of the tasks required for an effective penetration test and it’s even extensible!

Categories
Web Application Security

Burp Suite vs CSRF Tokens: CSRFTEI

I wrote a very simple burp extension that can pull a token a CSRF token out of a response and update the next request with that token. It’s designed to be a simple as possible so it works for my lesson on writing burp extensions and if you’re lucky then all you need to do is update the script with the name of the token your target application uses and you’re good to go but it’s designed to be as easy to tweak to your needs as possible. I also wrote about how to install custom extensions here if you’ve not done that before, just copy and paste the below code into a file called csrftei.py and load that file into burp! The code is all available below and should be nicely commented to explain how everything works:

Categories
Web Application Security

Burp Suite vs CSRF Tokens

Recently I wrote a quick HowTo about dealing with using Burp Suite against an application that invalidates your session whenever it spots a potential malicious payload. I wrote that a Burp Macro that can perform Automatic Reauthentication can overcome that issue. Another common issue that gets in the way of performing penetration tests against mobile applications is having to deal with anti cross-site request forgery tokens. These are tokens that an application embeds in a response and expects to see in the body of the subsequent request, if the token is ever missing or incorrect the request is ignored. This interferes terribly with Burp Suite tools such as repeater, intruder and scanner as by default these don’t handle the tokens and therefore the requests are all ignored. I get around this issue through the use of simple custom burp extensions and I wanted to share some notes about how surprisingly simple this is!

Categories
Web Application Security

Burp Macros: Automatic Re-authentication

During a recent penetration test I came up against a security feature that would invalidate my session whilst I was fuzzing if it saw simple attack strings, so if I used <script> anywhere then it’d kill my session. Most frustrating! Especially as it essentially prevented the use of tools such as Burp’s Active Scanner and it made using Repeater inconvenient too. So I quickly threw together a Burp Macro to handle automatic re-authentication for me and went back to fuzzing!

So here’s how to do that!

Categories
Web Application Security

Burp Suite Extensions: Installing Jython and adding an Extension

In order to use or write Burp Suite Extensions in Python you need to have Jython Standalone installed. So he’s the world’s fasted HOWTO on getting Jython set up to work with Burp.

Categories
Web Application Security

Burp Suite Keyboard Shortcuts!

If you use Burp Suite a lot then you’ll no doubt love the interface – moving between tools is really fast and the interface is just friendly; however I recently heard someone complaining that it’s annoying that it’s mouse-only and you can’t use hotkeys to swap between tabs and move between tools…but you can!