All files are for educational and/or historic purposes only. [back to library]
Chapter 4: Hacking Webpages 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 part 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 difference, 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 you should be able to identify a normal encrypted pw from a shadowed pw file. We can now go on to talk about how to crack it. Cracking a password file isn't as complicated as it would seem, although the files 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 dictionary 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, Brute Force Cracker, or Jack the Ripper. Now for a dictionary maker or a dictionary file... When you start a cracking prog you will be asked to find the the password file. That's where a dictionary maker comes in. You can download one from nearly every hacker page on the net. A dictionary maker finds all the possible letter combinations with the alphabet that you choose(ASCII, caps, lowercase, and numeric letters may also be added) . We will be releasing our pasword file to the public 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 cracker 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 everybody already knows it and most servers have already found out about the bug and fixed 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 it doesn't work 95% of the time). But to do the phf all you do is open a browser and 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 the 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). The best way to get root is with an exploit. Exploits are explained in the next chapter.