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Happy Hacker Digest Feb. 6, 1997
____________________________________
This is a moderated list for discussions of *legal* hacking. Moderator is
Carolyn Meinel. Please don't send us anything you wouldn't email to your
friendly neighborhood narc, OK? Send posts to . Better
yet,
To subscribe or unsubscribe, use the subscribe boxes on the menubar. If you decide you just want to
use the forum and not get these mailings, I promise my feelings won't get
hurt if you unsubscribe from this list.
Happy hacking -- and ne auderis delere orbem rigidum meum!
---------------------------------------------------------

Moderator: I may live to regret adding a Latin slogan (the orbem rigidum
thingy above) to the Happy Hacker Digest boilerplate. Check out all the
Latin slogans in the posts below. Do we see a trend shaping up here? Will we
add Latin to C++ and Perl as must-learn languages for the elite hacker?

Table of contents:

Legal Issues
Solution to Email Bombing
Browser Hacking
Win 95 Hacking
IP Spoofing
X.25 Hacking
Linux Question
Password File Hacking
What Kinda Progie Izzat?
Less is More

LEGAL ISSUES

From: SS Rat <reidy@tis.com>
Subject: Re: Happy Hacker Digest Feb. 5, 1997

Here's a good URL to keep up on the laws pertaining to hacking, cracking, etc.

http://www.gahtan.com/techlaw/

It's important to know the law if you want to hack legally. Remember
ignorance is not a legal defense!

Subject: Please make anonymous

Two quick questions:
1)Is IP spoofing and sniffing illegal???
2)does anyone know of any bugs in wwwboard.pl, cause I've seen two of
them hacked in the past week?

-Anon

From: "Orbital Computers" <orbit@uk.pi.net>
Subject: Honi soit qui mal y pense

Does anyone know of the laws regarding international hacking?  For example,
if I sat here in Blighty (Britain) and hacked a US computer, and left a
message on there with my name, address,
telephone number, date of birth, national insurance (social sec.) number,
bank account details... what the hell could they do about it?  Also, what if
I did it from Mongolia or a remote link in the middle of the Pacific Ocean
in a rubber dinghy?  I'd be interested to know.
 

SOLUTION TO EMAIL BOMBING

Sender: DWING@TGV.COM (Dan Wing)
Subject: Re: PCWorld Interview: email bomb problem

A consultant friend of mine, Joel Snyder, did a lot of work with the
Whitehouse's mailer, which runs PMDF (which runs on VMS and some Unix
platforms).  You may be interested in what he's done.  His address is
jms@opus1.com.  The PMDF product includes some measures to prevent being
used as a relay, as well, but isn't as robust as Joel's work.  Information
on PMDF can be found at www.innosoft.com.
 

BROWSER HACKING

From: Keith Bostic <bostic@bsdi.com>
Forwarded-by: Jason Thorpe <thorpej@nas.nasa.gov>
Forwarded-by: Chris LaFournaise <cjl@sequent.com>
>From RISKS Digest Vol 18, Issue 80.

Date: 1 Feb 1997 05:12:02 GMT
From: weberwu@tfh-berlin.de (Debora Weber-Wulff)
Subject: Electronic Funds Transfer without stealing PIN/TAN

The Berlin newspaper "Tagespiegel" reports on 29 Jan 97 about a television
show broadcast the previous evening on which hackers from the Chaos Computer
Club demonstrated how to electronically transfer funds without needing a PIN
(Personal Identification Number) or TAN (Transaction Number).

Apparently it suffices for the victim to visit a site which downloads an
ActiveX application, which automatically starts and checks to see if
Quicken, a popular financial software package that also offers electronic
funds transfer, is on the machine. If so, Quicken is given a transfer order
which is saved by Quicken in its pile of pending transfer orders. The next
time the victim sends off the pending transfer orders to the bank (and
enters in a valid PIN and TAN for that!)  all the orders (= 1 transaction)
are executed -> money is transferred without the victim noticing!

The newspaper quotes various officials at Microsoft et al expressing
disbelief/outrage/"we're working on it". We discussed this briefly in class
looking for a way to avoid the problem. Demanding a TAN for each transfer is
not a solution, for one, the banks only send you 50 at a time, and many
small companies pay their bills in bunches. Having to enter a TAN for each
transaction would be quite time-consuming. Our only solution would be to
forbid browsers from executing any ActiveX component without express
authorization, but that rather circumvents part of what ActiveX is intended
for.

A small consolation: the transfer is trackable, that is, it can be
determined at the bank to which account the money went. Some banks even
include this information on the statement, but who checks every entry on
their statements...

Debora Weber-Wulff, Technische Fachhochschule Berlin, Luxemburger Str. 10,
13353 Berlin GERMANY weberwu@tfh-berlin.de <http://www.tfh-berlin.de/~weberwu/>

From: Matthew DeMizio <matthewd@pipeline.com>
Subject: Web Browsing - Forcing an index of documents

I've been using the World Wide Web for a while now and was wondering if
there is a way to force the browser you're using to retrieve a list of
documents in the directory on the server, rather than something like
index.html or default.html . It's stumped me for a while and wondered if
anyone else out there had been able to figure this out.

--
Matthew DeMizio        matthewd@pipeline.com
home page:  http://users.aol.com/ltdemiz/

(Moderator: Some browsers allow you to do ftp (file transfer protocol). Or
were you asking about downloading any arbitrarily chosen file? That would be
illegal.)

From: "mojoe" <mojoe@wko.com>
Subject: Web Page Hacking

Hello, I would first like to say that HH rocks! Now you say in your post
all the time about hacking web pages? I have a friend who always can get
into my page and put little drawings on my picture lol. How dose he do these
he lives 2000 miles away and he is on a different ISP? I would love to give
him a dose of his own medicine. I am running windows 95 and so is he my
server runs some sort of Linux version.

Any help would be most grateful.

(Moderator: First, try changing the password you use when you download
modifications of your Web page. How does your Web page server accept
passwords? If you have to transmit them in the clear, your friend may be
sniffing passwords. Or he may be finding other ways to break in --
possibilities are endless.)

From: "Ryan" <c.barrett@virgin.net>
Subject: Netscape

If you want to get rid of the annoying list of recently visited URLs in
Netscape, then do this.

Open Netscape.ini in Notepad.  Find the mention of the URL's.  Delete the
ones you don't want.  The remaining ones must have the number in the prefix
consecutive, so you need to change those.  Now save the changes, and you
are done.

It is a good idea to set INI files to open directly into notepad, as power
users will regularly need to edit them.

WIN95 HACKING

From: David Foobar <Foobar2@Lehigh.EDU>
Subject: win95

I am currently at a campus network, and each of the dorms on campus has
a sub-network. We have our dorm set-up using Windows 95 file and print
sharing so whoever wants can make their computer available for others to
download or run programs on (only in certain directories, of course.)
What happened though, was that one student, who was very new to
computing, set up his computer so that everyone had access to ALL of his
directories, without needing a password. A certain somebody else decided
to go in and delete the entire contents of this students computer,
causing an incredible amount of grief to the other student who's
computer suddenly wouldn't even boot up. Now, we all know who this kid
is, and what I am wondering is, are there any security holes that you
can use to get past the Windows 95 password prompt (unfortunately, just
hitting escape doesn't do the trick...) to connect to other computers?
I'm not suggesting that I would do anything harmful to this other
persons computer, just change their autoexec.bat and wallpaper to leave
them a little message to tell them what will happen next time they
decide to wipe out someone else's computer. Thanx a lot, and great job on
the Guide.

(Moderator: since I used to commit college pranks, I suppose I shouldn't get
too upset. Still, you are planning to be naughty. Bad student. Bad! Bad!)

From: TQDB <tqdb@feist.com>
Subject: Re: Happy Hacker Digest Feb. 5, 1997

On Wed, 5 Feb 1997, Carolyn P. Meinel wrote:

> (Moderator: think boot disk. If that doesn't work, power down, restart, hit
> escape and make sure the bios is set to boot from a: drive. Folks, that
> Win95 password is a fragile way to save you from someone with physical
> access to your box!)

    That is why there are things like BIOS bootup passwords and MBR
password protection programs for Win95.
.TQDB

From: David Foobar <Foobar2@Lehigh.EDU>
Subject: Re: win95

Carolyn,
 Thanks for the help, but I think you misunderstood me. I'm not talking
about the password prompt when Win95 first boots up. When you try to
access someone else's computer through Network Neighborhood, you get a
prompt for a password to access that person's computer. That is what I
am wondering how to get around. I do not have physical access to his
computer either, so the boot disk option is gone. Thanks again.

From: "Aaron Matthews" <aaron@pathcom.com>
Subject: Re: Happy Hacker Digest Feb. 5, 1997

If you can get into DOS change dir to the windows dir and if there is a
certain user you
want to log in as rename the file username.pwl to username.tmp or what ever
then when finished rename it back. EASY_PEASIE!?

From, SiM
sim@most-wanted.com

From: "Ryan" <c.barrett@virgin.net>

Win95 is soooo easy to 'hack'.

If you want to see another users desktop, start-menu and recent folder,
then just do this:

Go into your Windows Directory.
Go into Profiles
Go into the User Name of you choice.

There you are.  Easy or what!?  Sadly though, slightly useless.

If you want their password, then just put a Keystroke logger in the
Autoexec.bat, or THEIR start folder (in form of shortcut).  I don't tend to
do this, because I know certain other tricks that allow me to 'become'
another user (he, he...), which I'm not going to tell!

PS.  I've got this useful program for hiding sensitive files (Accounts....).
 It's called Magic Folders, and is brilliant.  Try to find it on the web.
It shall be on my website (which is to open at the beginning or March), and
I'll mail you the URL when I know what it will be.

rom: n-treeg@ix.netcom.com
Subject: Quick MSIE Hack! --N-TREEG

Greets to Carolyn and everyone on Happy Hacker.

At my University's Library, they have win95 boxes connected to the Internet
for web browsing.  The TaskBar is set up so that you supposedly can only
access the applications they want you to have access to.  The task bar gives
no file manager access or MS-DOS prompts.  Also, there is no "My Computer"
icon to play around with.  The computers are running Microsoft Internet
Explorer.  This makes it trivial to view and access any file on the
machine's hard drive.  Just enter the following in the URL:
file:///C|
This opens windows to any folders the machine may have.  No need for file
manager access.  News Flash to the library:  Limiting options on the task
bar does not keep files from prying eyes and should not be considered for
any type of "security" ;)

Yeah, I know this is a lame hack but its something to keep me
procrastinating (don't feel like writing my paper for class at the moment!)

Peace...

N-TREEG
"2 k1LL w/ N-TREEG"

IP SPOOFING

From: jesto@netins.net

I see we have the same Latin quote :)..OK I was wondering where I could find
some GOOD IP spoofers...thanx. and in Linux, how to I get my PPP working?? I
cant seem to get my xwindows to work either!! ARRGGGHHH!!!!!
ps..you were 15 once, did you have this much stress put on you??

thanx Jason
Ne auderis delere orbem rigidum meum

From: Web Queen <claudia@go2net.com>
Subject: Twiddler on the Spoof

<delurk>

Interesting article on IP spoofing, thought you might want to take a look
at it.

http://www.go2net.com/internet/deep/1997/02/05/

</delurk>

claudia

X.25 HACKING

From: OPTIMUS@BACON.BITNET
>From optimus@canit.se Wed Feb  5 21:38:57 1997

Although I've been enjoying your (Karen) guides to harmless hacking for a
while, I subscribed to the list only a few days ago. It seems like a good
forum, without spam and posers.
Why not do something about X.25 networks some time? DataPak intrigues me.
For those interested in BBS hacking, there are some tips in two files on
anarchy-online.com (telnet BBS), the files are called UNDRGRND.ZIP and
UNDER2.ZIP.
Some guy called root said he only saw less on Linux, but I've run it on
Amigas many times. =)
Last of all, Strider might not know that he uses a name taken by the
legendary Strider of Fairlight, one of the biggest and coolest cracker
groups ever.

(Moderator: Of course Strider was first famous as a character in J.R.R.
Tolkien's Lord of the Rings trilogy.)

LINUX QUESTION

Sender: matthias@hacker.cymes.de.dyn
Subject: PLEASE HELP !

At home I've got a little network ( 4 computers / Class C
192.168.001.??? / TCP/IP protocol ) . 1 computer ( the one with a
modem ) runs Linux . Now my question : Is it possible to use the Linux
PC as a kind of router for the other computers ( running wfw311 & TCP/IP
protocol ) . At the moment the only way to access the Internet from the
3 WfW311 PCs is telnetting to my Linux PC :-( . It would be cool if
someone could tell me how I can setup some kind of a router ( or should I
install a proxy ??? or should I install Linux on the other PCs too ???
or what ?? ) so that I can use Netscape Navigator or an other Browser
which runs under WfW . I already sent this question to some newsgroups -
no response . Possibly they are not 313373 enough - that's why I send
this question to HH .

PS : I do *NOT* have a static IP at my ISP :-( !!

PASSWORD FILE HACKING

From: "Orbital Computers" <orbit@uk.pi.net>
Subject: Honi soit qui mal y pense

> > From: burncy@mail1.nai.net (Burn-Cycle)
> > Subject: Re: Welcome to Happy Hacker
> >
> > I use windows 95 and I use a really good telnet program...I think. Only
> > because I've read thing that hackers have written and they have said
that
> > they can't only do certain stuff with a shell account. Well, I can do
> > everything they can do with my telnet program..........I think. Only
things
> > that I've tried, have all worked for me. Anyway, I don't get something.
I
> > know that when you finger someone you get the location of their
password
> > file right?
> >
> > ya know it looks something like this..
> >
> > etc\usr\bin
>
> That looks like it should be /etc/usr/bin.  Note that Unix uses slashes,
>                              ^   ^   ^
> rather than back-slashes like DOS or colons like MacOS (yeech!).  Also,
> under every Unix I have ever seen, the password file is /etc/passwd or
> /etc/shadow-password.

On to hacking the password... if you copy this file to your computer and
open it, you'll get something like this one I found somewhere (can't
remember for the life of me where):
 root:x:0:1:0000-Admin(0000):/:/sbin/sh
 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:/:
 ftp:x:60002:60002:Anonymous FTP:/home/ftp:
 noaccess:x:60002:60002:uid no access:/:
This is quite a bad example as there are no passwords in it, but I'll do my
best.  Let's take the first entry.  This is for the user 'root'.  The
password is encrypted, and because of the method Unix uses to do it (a sort
of one-way algorithm), you can't decrypt it.  The only way you can find out
what the password is to use a Unix password cracker.  All that does is
keep encrypting common passwords from a dictionary (that you can edit)
until they match the encrypted one you have.  The trouble is, the
person who set the passwords is even remotely intelligent, they will use a
random alphanumeric one like b24svs2, which would be uncrackable without
**A LOT** of patience.
  Telnetting without a shell account... my ISP is Planet Internet in the
UK, run by AT&T.  Despite who it's run by, they don't seem to care what the
hell I do either.  Long live these gods of ISPs!

HACKING UNIX LOG FILES
Unlike the passwd file, this cannot be viewed or edited in notepad.  You'll
need a program to do it for me.  If anyone's interested, contact me and
I'll send you some.  (If I get too much response I'll post it here).
REMEMBER though, altering the log files is illegal.  I don't accept any
responsibility for what you do with the file.

HACKING WINDOWS PASSWORDS

Here's an extract from the alt.2600 FAQ beta .013 regarding the matter:
I will describe the process starting after you've entered the password
and hit the [OK] button.

I will make the assumption that everyone (at least those interested) know
what the XOR operation is.

First, the length of the password is saved.  We'll call this 'len'.  We
will be moving characters from the entered string into another string as
they are encrypted.  We'll call the originally entered password
'plaintext' and the encrypted string(strings--there are two passes)
'hash1' and 'hash2.'  The position in the plaintext is important during
the process so we'll refer to this as 'pos.'  After each step of the
hashing process, the character is checked against a set of characters
that windows considers 'special.'  These characters are '[ ] =' and any
character below ASCII 33 or above ASCII 126.  I'll refer to this
checking operation as 'is_ok.'  All indices are zero-based (i.e. an 8
character password is considered chars 0 to 7).

Now, the first character of 'plaintext' is xor'd with 'len' then fed to
'is_ok'.  if the character is not valid, it is replaced by the original
character of 'plaintext' before going to the next operation.  The next
operation is to xor with 'pos' (this is useless for the first operation
since 'len' is 0 and anything xor'd with zero is itself) then fed to
'is_ok' and replaced with the original if not valid.  The final
operation (per character) is to xor it with the previous character of
'plaintext'. Since there is no previous character, the fixed value, 42,
is used on the first character of 'plaintext'.  This is then fed to
'is_ok' and if OK, it is stored into the first position of 'hash1'  This
process proceeds until all characters of plaintext are exhausted.

The second pass is very similar, only now, the starting point is the
last character in hash1 and the results are placed into hash2 from the
end to the beginning.  Also, instead of using the previous character in
the final xoring, the character following the current character is used.
Since there is no character following the last character in hash1, the
value, 42 is again used for the last character.

'hash2' is the final string and this is what windows saves in the file
CONTROL.INI.

To 'decrypt' the password, the above procedure is just reversed.

If you want to hack the password for the screen saver in a Radio Shack
store (in the US), try:
RS<store_number>
Then change the screen saver to that scrolly one and make the text "Radio
Shack - High Prices - Low Quality Goods" or something like that.

Laterz Hackerz

WHAT KINDA PROGIE IZZAT?

From: "Roger A. Prata" <prata@bossnt.com>
Subject: check this out

while on my shell acct, I checked processes, and noticed someone
telnetted..  'telnet localhost 6969'  so of course being the curious
type, I tried it and got..

boss1:/usr/home/prata$ telnet localhost 6969
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
 
 
Rydia  (Eggdrop v1.0n+pl2  (c)1997 Robey Pointer)
 
Please enter your nickname.
prata
You don't have access.
Connection closed by foreign host.
boss1:/usr/home/prata$

WOW!!  pretty kewl huh?  any ideas as to what the he** this is??

Rog

LESS IS MORE

From: Yoav Shapira <darchon@bu.edu>
Subject: Re: Happy Hacker Digest Feb. 5, 1997

On Wed, 5 Feb 1997, Carolyn P. Meinel wrote:

> actually, by "cat it through more" he meant "cat /etc/services | more".  But
> it won't make a difference, except in helping you to understand Unix.  Also,
> I have never seen less (much better than more, but not as good as most <G>)
> on anything but a Linux box.

Hi,
To whoever posted the above: I work with less(and more, and was actually
thinking of writing something called most or least) on SGI Irix's, BSDi
and FreeBSD machines, Solaris 2.4, 2.5, 2.5.1, and AIX 3.2.X and 4.2.  I
don't remember which ones it came installed on, but now it's on all of
them, and these are definitely more serious than Linux(spit) boxes...

And one other thing--there could be a difference between
more /etc/services
and
cat /etc/services| more
if additional output redirection was used in the same command line, or if
the directory separation character (IFS) was changed to | from / for example.
And either way, /etc/services is only the registered ports on that
machine! It's not every port Unix can understand, like someone said in
the digest...Try comparing other files on that system with /etc/services
to see the difference, like inetd.conf...

Yoav

-Est Sularus oth Mithas-
Carolyn Meinel
M/B Research -- The Technology Brokers
 

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