Google search engine can be used to hack into remote servers or
gather confidential or sensitive information which are not visible
through common searches.
Google is the world’s most popular and powerful search engine. It has
the ability to accept pre-defined commands as inputs which then
produces unbelievable results.
Google’s Advanced Search Query Syntax
Discussed below are various Google’s special commands and I shall be
explaining each command in brief and will show how it can be used for
getting confidential data.
[ intitle: ]
The “intitle:” syntax helps Google restrict the search results to pages containing that word in the title.
intitle: login password
will return links to those pages that has the word “login” in their title, and the word “password” anywhere in the page.
Similarly, if one has to query for more than one word in the page
title then in that case “allintitle:” can be used instead of “intitle”
to get the list of pages containing all those words in its title.
intitle: login intitle: password
is same as
allintitle: login password
[ inurl: ]
The “inurl:” syntax restricts the search results to those URLs
containing the search keyword. For example: “inurl: passwd” (without
quotes) will return only links to those pages that have “passwd” in
the URL.
Similarly, if one has to query for more than one word in an URL then
in that case “allinurl:” can be used instead of “inurl” to get the
list of URLs containing all those search keywords in it.
allinurl: etc/passwd
will look for the URLs containing “etc” and “passwd”. The slash (“/”) between the words will be ignored by Google.
[ site: ]
The “site:” syntax restricts Google to query for certain keywords in a particular site or domain.
exploits site:hackingspirits.com
will look for the keyword “exploits” in those pages present in all
the links of the domain “hackingspirits.com”. There should not be any
space between “site:” and the “domain name”.
[ filetype: ]
This “filetype:” syntax restricts Google search for files on internet with particular extensions (i.e. doc, pdf or ppt etc).
filetype:doc site:gov confidential
will look for files with “.doc” extension in all government domains
with “.gov” extension and containing the word “confidential” either in
the pages or in the “.doc” file. i.e. the result will contain the
links to all confidential word document files on the government sites.
[ link: ]
“link:” syntax will list down webpages that have links to the specified webpage.
link:www.expertsforge.com
will list webpages that have links pointing to the SecurityFocus
homepage. Note there can be no space between the “link:” and the web
page url.
[ related: ]
The “related:” will list web pages that are “similar” to a specified
web page.
related:www.expertsforge.com
will list web pages that are similar to the Securityfocus homepage.
Note there can be no space between the “related:” and the web page
url.
[ cache: ]
The query “cache:” will show the version of the web page that Google
has in its cache.
cache:www.hackingspirits.com
will show Google’s cache of the Google homepage. Note there can be no space between the “cache:” and the web page url.
If you include other words in the query, Google will highlight those words within the cached document.
cache:www.hackingspirits.com guest
will show the cached content with the word “guest” highlighted.
[ intext: ]
The “intext:” syntax searches for words in a particular website. It ignores links or URLs and page titles.
intext:exploits
will return only links to those web pages that has the search keyword “exploits” in its webpage.
[ phonebook: ]
“phonebook” searches for U.S. street address and phone number information.
phonebook:Lisa+CA
will list down all names of person having “Lisa” in their names and
located in “California (CA)”. This can be used as a great tool for
hackers incase someone want to do dig personal information for social
engineering.
Google Hacks
Well, the Google’s query syntaxes discussed above can really help
people to precise their search and get what they are exactly looking
for.
Now Google being so intelligent search engine, hackers don’t mind
exploiting its ability to dig much confidential and secret information
from the net which they are not supposed to know. Now I shall discuss
those techniques in details how hackers dig information from the net
using Google and how that information can be used to break into
remote servers.
[ Index Of ]
Using “Index of ” syntax to find sites enabled with Index browsing
A webserver with Index browsing enabled means anyone can browse the
webserver directories like ordinary local directories. The use of
“index of” syntax to get a list links to webserver which has got
directory browsing enabled will be discussd below. This becomes an easy
source for information gathering for a hacker. Imagine if the get
hold of password files or others sensitive files which are not
normally visible to the internet. Below given are few examples using
which one can get access to many sensitive information much easily.
Index of /admin
Index of /passwd
Index of /password
Index of /mail
“Index of /” +passwd
“Index of /” +password.txt
“Index of /” +.htaccess
“Index of /secret”
“Index of /confidential”
“Index of /root”
“Index of /cgi-bin”
“Index of /credit-card”
“Index of /logs”
“Index of /config”
Looking for vulnerable sites or servers using “inurl:” or “allinurl:”
a. Using “allinurl:winnt/system32/” (without quotes)
will list down all the links to the server which gives access to
restricted directories like “system32” through web. If you are lucky
enough then you might get access to the cmd.exe in the “system32”
directory. Once you have the access to “cmd.exe” and is able to execute
it.
b. Using “allinurl:wwwboard/passwd.txt”(without
quotes) in the Google search will list down all the links to the server
which are vulnerable to “WWWBoard Password vulnerability”. To know
more about this vulnerability you can have a look at the following
link:
http://www.securiteam.com/exploits/2BUQ4S0SAW.html
c. Using “inurl:.bash_history” (without quotes) will
list down all the links to the server which gives access to
“.bash_history” file through web. This is a command history file. This
file includes the list of command executed by the administrator, and
sometimes includes sensitive information such as password typed in by
the administrator. If this file is compromised and if contains the
encrypted unix (or *nix) password then it can be easily cracked using
“John The Ripper”.
d. Using “inurl:config.txt” (without quotes) will
list down all the links to the servers which gives access to
“config.txt” file through web. This file contains sensitive
information, including the hash value of the administrative password
and database authentication credentials.
For Example: Ingenium Learning Management System is a
Web-based application for Windows based systems developed by
Click2learn, Inc. Ingenium Learning Management System versions 5.1 and
6.1 stores sensitive information insecurely in the config.txt file.
For more information refer the following
links: http://www.securiteam.com/securitynews/6M00H2K5PG.html
Other similar search using “
inurl:” or “
allinurl:” combined with other
syntax
inurl:admin filetype:txt
inurl:admin filetype:db
inurl:admin filetype:cfg
inurl:mysql filetype:cfg
inurl:passwd filetype:txt
inurl:iisadmin
inurl:auth_user_file.txt
inurl:orders.txt
inurl:”wwwroot/*.”
inurl:adpassword.txt
inurl:webeditor.php
inurl:file_upload.php
inurl:gov filetype:xls “restricted”
index of ftp +.mdb allinurl:/cgi-bin/ +mailto
Looking for vulnerable sites or servers using “
intitle:” or “
allintitle:”
a. Using [allintitle: "index of /root”] (without
brackets) will list down the links to the web server which gives access
to restricted directories like “root” through web. This directory
sometimes contains sensitive information which can be easily retrieved
through simple web requests.
b. Using [allintitle: "index of /admin”] (without
brackets) will list down the links to the websites which has got index
browsing enabled for restricted directories like “admin” through web.
Most of the web application sometimes uses names like “admin” to
store admin credentials in it. This directory sometimes contains
sensitive information which can be easily retrieved through simple
web requests.
Other similar search using “
intitle:” or “
allintitle:” combined with other syntax
intitle:”Index of” .sh_history
intitle:”Index of” .bash_history
intitle:”index of” passwd
intitle:”index of” people.lst
intitle:”index of” pwd.db
intitle:”index of” etc/shadow
intitle:”index of” spwd
intitle:”index of” master.passwd
intitle:”index of” htpasswd
intitle:”index of” members OR accounts
intitle:”index of” user_carts OR user_cart
allintitle: sensitive filetype:doc
allintitle: restricted filetype :mail
allintitle: restricted filetype:doc site:gov
Other interesting Search Queries
• To
search for sites vulnerable to Cross-Sites Scripting (XSS) attacks:
allinurl:/scripts/cart32.exe
allinurl:/CuteNews/show_archives.php
allinurl:/phpinfo.php
To
search for sites vulnerable to SQL Injection attacks:
allinurl:/privmsg.php
allinurl:/privmsg.php
