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Montoya API: Update HttpHeader in Repeater Tab

Manuel | Last updated: Mar 07, 2024 09:11AM UTC

Is it possible to change a HttpHeader on the HttpRequestResponse selected via a ContextMenuEvent in a Reapeater tab?

Hannah, PortSwigger Agent | Last updated: Mar 07, 2024 05:26PM UTC

Yes, it's possible to modify the contents of a message editor.

In the example below, I used "withAddedHeader()", but you could substitute this out for a different method.

import burp.api.montoya.BurpExtension;
import burp.api.montoya.MontoyaApi;
import burp.api.montoya.ui.contextmenu.ContextMenuEvent;
import burp.api.montoya.ui.contextmenu.ContextMenuItemsProvider;
import burp.api.montoya.ui.contextmenu.MessageEditorHttpRequestResponse;

import javax.swing.*;
import java.awt.*;
import java.util.List;

import static burp.api.montoya.core.ToolType.REPEATER;
import static java.util.Collections.emptyList;

public class Extension implements BurpExtension
{
    @Override
    public void initialize(MontoyaApi api)
    {
        api.extension().setName("Add header in Repeater");
        
        api.userInterface().registerContextMenuItemsProvider(new ContextMenuItemsProvider()
        {
            @Override
            public List<Component> provideMenuItems(ContextMenuEvent event)
            {
                if (event.isFromTool(REPEATER))
                {
                    if (event.messageEditorRequestResponse().isPresent())
                    {
                        JMenuItem menuItem = new JMenuItem("Add header");
                        menuItem.addActionListener(l -> {
                            MessageEditorHttpRequestResponse messageEditorHttpRequestResponse = event.messageEditorRequestResponse().get();
                            messageEditorHttpRequestResponse.setRequest(messageEditorHttpRequestResponse.requestResponse().request().withAddedHeader("Foo", "bar"));
                        });

                        return List.of(menuItem);
                    }
                }

                return emptyList();
            }
        });
    }
}

Manuel | Last updated: Mar 07, 2024 11:55PM UTC

Thanks for the reply. I wrongly used the immutable HttpRequestRespons instead of MessageEditorHttpRequestResponse, and using that solved my problem.

Hannah, PortSwigger Agent | Last updated: Mar 08, 2024 09:14AM UTC

Glad to hear that's helped! If there's anything else we can help with, then please let us know.

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