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[NSE] http-useragent-tester.nse
From: George Chatzisofroniou <sophron () latthi com>
Date: Thu, 25 Jul 2013 21:10:56 +0300

The attached script sets various User-Agent headers that are used by different
ultities and crawling libraries (for example CURL or wget). If a request is
redirected to a page different than a (valid) browser request would, that
means that this ultity is banned.

Here is an example of usage:

./nmap -p80 -n -Pn --script http-useragent-tester.nse some-very-random-page.com -d1

And the output:

 PORT   STATE SERVICE REASON
 80/tcp open  http    syn-ack
 | http-useragent-tester: 
 |   libwww is not allowed: https://www.some-very-random-page.com/unsupportedbrowser
 |   lwp-trivial is allowed.
 |   libcurl-agent/1.0 is not allowed: https://www.some-very-random-page.com/unsupportedbrowser
 |   PHP/ is allowed.
 |   Python-urllib/2.5 is allowed.
 |   GT::WWW is allowed.
 |   Snoopy is allowed.
 |   MFC_Tear_Sample is allowed.
 |   HTTP::Lite is allowed.
 |   PHPCrawl is allowed.
 |   URI::Fetch is allowed.
 |   Zend_Http_Client is allowed.
 |   http client is allowed.
 |   PECL::HTTP is allowed.
 |   Wget/1.13.4 (linux-gnu) is not allowed: https://www.some-very-random-page.com/unsupportedbrowser
 |_  WWW-Mechanize/1.34 is allowed.

Also, a user may use the option 'useragents' to test her own User-Agent headers.

PS: The idea of setting various headers to discover anything about the host
comes from d33tah, so kudos to him as well.

-- 
George Chatzisofroniou

Attachment: http-useragent-tester.nse
Description:

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