You can apply Java-based Bambdas to create powerful custom filters for your site map. You can do this in two ways:
Load existing Bambdas - Load Bambdas from your Bambda library.
Create new Bambdas - Write and apply Bambdas directly in the Site map filter window.
To speed up your workflow when creating or loading Bambdas, you can use the following keyboard shortcuts:
Save - Ctrl + S or Cmd + S
Save as - Ctrl + Shift + S or Cmd + Shift + S
Create new Bambda - Ctrl + N or Cmd + N
Load recent Bambda - Ctrl + O or Cmd + O
You can load and apply Bambdas that are stored in your library to filter your site map.
To load a Bambda from your library:
In Target > Site map, click the filter bar to open the Site map filter window.
In the Site map filter window, click Bambda mode.
Click Load.
Select a recent Bambda from the list.
If the Bambda you want to load isn't in the list, click View all to view all Bambdas stored in your library.
[Optional] If required, edit the Bambda:
Make your changes.
Click Apply to compile and test the Bambda. Fix any errors shown in the Compilation errors panel. For more information, see Troubleshooting Bambdas.
Save your changes:
To overwrite the existing Bambda, click Save to library > Save.
To save a new version, click Save to library > Save as.
Click Apply & close.
Burp compiles your Bambda and applies it to every item already logged in your site map, and to any future site map items generated in this project.
You can write your own Bambdas directly in the Site map filter window, using built-in templates or from a blank definition.
Before you begin writing, we recommend exploring our Bambdas GitHub repository. There may be an existing Bambda that meets your needs or provides inspiration for creating your own.
You can convert filter settings to a Bambda as a starting point for further customization:
In Target > Site map, click the filter bar to open the Site map filter window.
Make changes to the filter settings as necessary.
At the bottom of the Site map filter window, click Convert to Bambda.
Your filter is converted into a Bambda, enabling you to customize it further using Java.
Some filter settings can't be converted to Bambdas as they aren't currently supported. For example, these site map filter settings don't convert to Bambda mode:
Show only requested items
Hide not-found items
Two objects of the Montoya API are available to help you write your Bambda:
SiteMapNode
Utilities
To create a Bambda to filter your site map:
In Target > Site map, click the filter bar to open the Site map filter window.
In the Site map filter window, click Bambda mode.
If you want to create your Bambda from a built-in template, select New > From template. Select a template from the list, then click Create using this template.
Write your Bambda using Java.
Click Apply to compile and test the Bambda. Fix any errors shown in the Compilation errors panel. For more information, see Troubleshooting Bambdas.
[Optional] Click Save to library > Save. The Bambda is saved to your Bambda library for future use across Burp.
Click Apply & close.
Burp compiles your Bambda and applies it to every item already logged in your site map, and to any future site map items generated in this project.
Using slow running or resource-intensive Bambdas can slow down Burp. Write your Bambda carefully to minimize performance impact.
In the example below, we'll create a Bambda that filters the site map to show only items that meet the following criteria:
The item must have a POST method.
The item must have an issue reported against it.
In this example, our Bambda is:
return node.requestResponse().request().method().equals("POST") && !node.issues().isEmpty();