Professional

Predefined payload lists

• Last updated: October 29, 2024

• Read time: 2 Minutes

Burp Intruder includes a range of built-in payload lists. You can use these to quickly and easily generate payloads for various attacks.

Using predefined payload lists

You can use a predefined payload list with any payload type that uses a list of strings:

1. Go to Intruder. In the Payloads side panel, select an appropriate option from the Payload type drop-down menu.
2. Click Add from list... in the Payload configuration field.
3. Select a list from the drop-down menu. The list displays in the Payload configuration field.
4. If the list includes placeholders, set up a rule to process them under Payload processing.

Placeholders

Some of the predefined payload lists include placeholders that you can replace with your own values:

Predefined payload list	Placeholders used in the list
CGI Scripts	{file}, {domain}
Fuzzing - full	{base}, {domain}, foo@{domain}
Fuzzing - JSON_XML injection	{base}
Fuzzing - out of band	{domain}
Fuzzing - path traversal (single file)	{file}
Fuzzing - path traversal	{base}
Fuzzing - quick	{base}

Processing placeholders

Before you run an attack with one of the payload lists above, you need to replace placeholders with actual values. The table below details how each of the placeholders can be used:

Placeholder	Use	Example placeholder replacement
{file}	Specify a filename.	/etc/passwd
{base}	Replaces {base} with value marked as payload.	1337
{domain}	Specify a web domain.	COLLAB_ID.oastify.com
foo@{domain}	Specify a web domain as part of an email address.	example.com

Processing a placeholder in your attack

To add a placeholder to your attack, set up a processing rule:

1. Go to Intruder. In the Payloads side panel, scroll down to the Payload processing field.
2. Click Add. A window opens with a drop-down list of processing rules.
3. Select Match/replace.
4. In the Match regex field, type in the placeholder used in the payload. For example, \{file\} or \{domain\}.
5. In the Replace with field, type the item you want to replace the placeholder with. For example, application.exe instead of \{file\}, or portswigger.net instead of \{domain\}.