- #Burp intruder attack types generator#
- #Burp intruder attack types code#
- #Burp intruder attack types password#
If the application has a "Forgotten password" feature that takes a username as a parameter and displays a password hint that was set by that user, you can cycle through a simple list of common usernames, and extract the password hint for each valid user. To do this in Burp Intruder, you need to perform the following steps:įind an application request that contains an identifier in a parameter, and where the response contains the interesting data about the requested item.Ĭonfigure an extract grep item to retrieve the relevant data from each response, and list this in the attack results. In many situations, rather than simply identifying valid identifiers, you need to extract some interesting data about each item, to help you focus your efforts on the most critical items, or to feed in to other attacks. If an application uses meaningful structured session tokens that are encrypted using a CBC cipher, you can use the bit flipper payload type to systematically modify a valid token to try to meaningfully tamper with its decrypted value. If an application function lets you view details of any order, by submitting a valid order ID, you can use the custom iterator payload type to generate potential order IDs in the correct format, and trawl for other users' orders. Having identified a list of valid usernames, you can use the simple list payload type with a set of common passwords to attempt to guess user's passwords.
#Burp intruder attack types generator#
If the application's login failure messages let you enumerate valid usernames, use the username generator payload type to cycle through a long list of possible usernames and identify valid ones. Some examples of real-world attacks of this type are as follows: Or if a valid identifier returns a response containing a specific expression, you can define a match grep item to pick out responses that match this expression.
#Burp intruder attack types code#
For example, if a valid identifier returns a different HTTP status code or response length, you can sort the attack results on this attribute. Identify a feature of the response from which valid identifiers can be reliably inferred, and configure Burp accordingly.
Use a suitable payload type to generate potential identifiers to test, using the correct format or scheme. To do this in Burp Intruder, you need to perform the following steps:įind an application request that contains the identifier in a parameter, and where the response indicates whether the identifier is valid.Ĭonfigure a single payload position at the parameter's value. Often, you will need to cycle through a large number of potential identifiers to enumerate which ones are valid or worthy of further investigation. Web applications frequently use identifiers to refer to items of data and resources for example, usernames, document IDs, and account numbers. The most common use cases for Intruder fall into the following categories:įor a further discussion of the kinds of attacks that can be performed using Burp Intruder, see The Web Application Hacker's Handbook (chapter 13 in the first edition, and chapter 14 in the second edition). Various tools are available to help analyze the results and identify interesting items for further investigation.īurp Intruder is a very flexible tool and can help automate all kinds of tasks when testing web applications. Payloads can be placed into payload positions using different algorithms. Numerous methods of generating payloads are available (including simple lists of strings, numbers, dates, brute force, bit flipping, and many others). Burp Intruder works by taking an HTTP request (called the "base request"), modifying the request in various systematic ways, issuing each modified version of the request, and analyzing the application's responses to identify interesting features.įor each attack, you must specify one or more sets of payloads, and the positions in the base request where the payloads are to be placed.
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