Hello
friends! Today we are doing web penetration testing using burp suite spider
which very rapidly crawl entire web application and dump the formation of
targeted web site.
Burp Spider is a tool for automatically
crawling web applications. While it is generally preferable to map
applications manually, you can use Burp Spider to partially automate
this process for very large applications, or when you are short of time.
Source: https://portswigger.net/burp/help/spider.html
Let’s
begin!!
First attacker needs to configure browser and burp
proxy to work properly, www.tetphp.vulnweb.com will my targetd web site for enumeration.
Form given below screenshot you can see currently there is
no targeted website inside site map of burp suite. To add your targeted web
site inside it you need to fetch the http request send by browser to web
application server, using intercept option of proxy tab.
Click on proxy tab
and turn on intercept in order to
catch http request.
Here
you can observe that I had fetched the http request of www.tetphp.vulnweb.com; now send to
spider with help of action tab.
Confirm
your action by making click on YES; Burp
will alter the existing target scope to include the preferred item, and all
sub-items contained by the site map tree.
Now choose spider tab
for further step, here you will find two sub categories control tab and option.
Burp Spider - Control Tab
This tab is used to start and stop Burp Spider, monitor
its progress, and define the spidering scope.
Spider Status
Use these settings to monitor and control Burp Spider:
·
Spider is paused / running - This toggle button is used to start
and stop the Spider. While the Spider is stopped it will not make any requests
of its own, although it will continue to process responses generated via Burp
Proxy (if passive
spidering is enabled), and
any newly-discovered items that are within the spidering scope will be queued
to be requested if the Spider is restarted.
·
Clear queues - If you want to reprioritize your
work, you can completely clear the currently queued items, so that other items
can be added to the queue. Note that the cleared items may be re-queued if they
remain in-scope and the Spider's parser encounters new links to the items.
Spider Scope
This panel lets you define exactly what is in the scope
for the Spider to request.
The best way to handle spidering scope is normally using
the suite-wide target scope,
and by default the Spider will use that scope.
Burp Spider Options
This tab contains options for the basic crawler
settings, passive
spidering, form
submission , application
login, the Spider engine,
and HTTP request
headers .
You can monitor the status of
the Spider when running, via the
Control tab. Any newly discovered content will be added to the Target site map.
When
spidering a selected branch of the site map, Burp will carry out the following
actions (depending on your settings):
·
Request any unrequested URLs already present
within the branch.
·
Submit any discovered forms whose action URLs lay
within the branch.
·
Re-request any items in the branch that
previously returned 304 status codes, to retrieve fresh (uncached) copies of
the application's responses.
·
Parse all content retrieved to identify new URLs
and forms.
·
Recursively repeat these steps as new content is
discovered.
·
Continue spidering all in-scope areas until no
new content is discovered.
Hence
you can see the targeted website has been added inside the site map as a new
scope for web crawling. Choose spider
this host option by making right click on selected URL which automatically
start web crawling.
When
you click on preferred target site map further content which has been discover
by spider will get added inside it as shown in given image below.
Form
screenshot you can see its dump all items of web site even by throwing request
and response of host.
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