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May 26, 1998
=====================================================================
URL of the day:http://www.mcp.com/personal  Personal Bookshelf
See back issues of the Happy Hacker Digest and Guides to
(mostly)Harmless
Hacking at http://www.Happyhacker.org.
GTMHH en espanol: http://underhack.islatortuga.com
Svenska:http://w1.340.telia.com/~u34002171/hhd/gtmhh/svenska/hhdsvensk.html
=====================================================================
TABLE OF CONTENTS

- Pegasus Mail Password in plain text
- dead.letter replies
- More Win32 Unix-like Shells
- What libraries are you running? (LINUX)
- More WinWord weakness
- Unix Hints
- Spook the wannabees...
- #90 Update
- Firewall and IRC client 
- FOR Command under Windows NT 4
- Free Technical Library on the Web

==================================================================
	*** Pegasus Mail Password in plain text
==================================================================
From: "Shosh Forbes (XSLF)" <xslf@netlane.com> 

Here is a very easy way to decode passwords saved by Pegasus mail-
Run Pegasus with the -Z 32 commandline  switch. This will enable TCP/IP 
debugging mode and record the POP3 session with your ISP's mailserver
to a 
file called TCPDEBUG.WPM in your mail directory. Check  mail and
closePegasus. 
Open TCPDEBUG.WPM in any text editor. Look for a line with PASS. That
line
will have your password in raw format. 

Don't forget to remove that commandline switch when you are finished!
Enjoy.

Shosh from israel
Shoshannah L. Forbes, CNA
mailto:xslf@netlane.com
===================================================================
	*** dead.letter replies
===================================================================
[Dale: Here are some responses to the dead.letter exploit we published
last issue... The first is from the sysadmin of the machine used by
the person who reported the exploit to us...]

From:Mark Castillo <markc@relationships.com>
I run the free OpenBSD shell server at webfreaks.com and aware of his
doings.  They were not successful in their attempt and recieved a
similar
email that was posted in the digest from the person.  They claimed it
worked, but it did not.  We are running 8.8.8, / and /var ARE on
separate
partitions, postmaster is an alias, and I was not able to re-create the
exploit on my server. 
_____________________________________________________________________
From:Meino Christian Cramer <root@solfire.ludwigsburg.netsurf.de>

Hi HappyHackers!
We are *HAPPY* hackers, ok? The *good* guys!
So, we do not only explain, how an exploit will work,
we should also explain, how to avoid, that someone
breaks into our systems, while using that exploit.
Ok, here is how to avoid the previously mentioned 
sendmail dead-letter exploit. 

Login as root at your system, then 
     cd /var/tmp     ls -l

If there is a dead letter already, you are safe. 
Don't delete that one. If there NO dead.letter, 
type:
     touch dead.letter
     chmod 600 dead.letter
 
This will create a dead.letter of null length.
Now it is impossible to hardlink /etc/passwd against
/var/tmp/dead.letter.
This exploit will not work any more. 

KEEP HACKING! 
meino    
----------------------------------
E-Mail: Meino Christian Cramer <root@solfire.ludwigsburg.netsurf.de>==================================================================
	*** More Win32 Unix-like Shells
==================================================================
From:Martin Svenningsson <emmess@bml.se.org>

Another free (GPL'd) thing is the Cygnus gnu-win32 project.
http://www.cygnus.com/misc/gnu-win32/
It provides a "unix layer" on top of the win32 API (known as
cygwin*.dll)
and a lot of ported GNU tools, like bash, gawk, grep, including the 
compiler set with gcc, g++, make, so you can easily port alot of 
unix programs to win NT/95.

dig the list -- MS
==================================================================
	*** What libraries are you running? (LINUX)
==================================================================
From:Meino Christian Cramer <root@solfire.ludwigsburg.netsurf.de>
Here is a shell script which does work on Linux systems, 
which let someone know more about the installed libraries. 
It is definitely not useful to break into systems. It is 
made for the bash shell, which is used widely on those systems.

-------------------------------------------------------
(to be stored as command "llib")
#!/bin/sh#
# This script shows you, which shared libraries are
# installed on your system and where to find them.#
# usage: llib <part or the whole name of the library to find>#################################################################
echo "----------------------------------------------------------"
ldconfig -p | grep -i $1
echo "----------------------------------------------------------"
for i in  $( ldconfig -p | grep -i $1 | awk '{ print $4 }' )do ls "$i"*
done | sort -uecho
"----------------------------------------------------------"

KEEP HACKING!
meino
E-Mail: Meino Christian Cramer <root@solfire.ludwigsburg.netsurf.de>==================================================================
	*** More WinWord weakness
==================================================================
From:Argus <Argus@aol.com>

Hey!
	I usually don't write to lists, but I thought I'd give it a try.
I read the MS Office Vulnerability letter in the May 18th digest and 
found it similar to a situation I was recently in.  First, though,
heres 
a little background info on the viewpoint I'm coming from.  

I'm 17, attending a "technologically advanced" public high school 
which is slowly switching its huge network over to 95 from 3.1.  
Though I was at the keyboard since I was in diapers (ok, maybe thats a
little bit exaggerated), I suppose you could call me a newbie,
due to my lack of Unix knowlege.  I recently installed Red Hat Linux,
coexisting with my Win95 installation, and am slowly learning various
commands
in my sparse free time.  My situation was as follows:

My school was smartly using Policy Editor as well as all the standard
security features that a Novell system has.  They had turned on the
PolEdit function that only allows specifically listed programs to execute.
This blocked the old Win3.1 way of using an application like Netscape,
that calls helper apps, to run "forbidden" programs.  

The way I worked around it was to first drop to DOS (via a helpful
little feature in the Winword "Help for Worperfect Users" option on the
help menu. It "demos" a DOS shell.  It still isn't disabled in our
school's Office 97). Then I would go to the directory that the program I
wanted to run was in and rename it to some file that WAS on the list of
runable programs. (The list just has filenames, not locations).  I would
then return to Windows and fire up a program that used helper apps and put
the renamed program file instead of the real helper app.  I usually use
Netscape and rename the telnet app.  The smart thing to do is to copy
poledit.exe from the Win95 CD and bring it in on a disk.  Rename that
sucker and you're set!

Just be sure to return all the old names/policies back to the defaults
before you leave, as to cover your tracks..  Well, I hope that helped
someone, just as many of the past letters have helped me.  This is a
great list, keep it up.

-Argus-
[Dale: Simply reboot the machine. The System Policy will be re-enforced
at the next login...]
==================================================================
	*** Unix Hints
==================================================================
From:Josh Fritsch <webmaster@cmeinel.com>

Want to learn UN*X but don't know where to start? Here are a few
suggestions to get you going:

1) Check out the major distribution sites! My personal suggestion is to
start with either RedHat (http://www.redhat.com) or Debian
(http://www.debian.org). Once you know the ropes a bit better, you may
consider trying out Slakware (http://sunsite.unc.edu). To spare
yourself an immense headache, buy a CD-ROM with linux on it as opposed
to trying to download the entire thing. _Trust_ me.

2) There are a zillion "how-to's" out there. READ THEM! If you start
asking questions that you could have easily found the answer to on the
net, you are most likely to be greeted with "RTFM". What does that mean?
Read The <insert favorite F-word here>Manual! How-to's are a lifesaver
that can walk you through just about anything as long as you have a little
patience...and if that's something you lack, you may want to consider
giving up on UN*X and sticking with M$ (Microsoft). Check out these
sites to get you started on your quest for information:
http://www.linuxhelp.org
http://sunsite.unc.edu
http://www.linux.org

3) Hang out on linux channels on IRC. My personal favs are #linux,
#unixhelp, and #freebsd. All of these can be found on Efnet.
***BEWARE***
Do NOT get on the #unix channel unless you are prepared to be flamed for
not being born with a shell manual in one hand and a 'C' book in the
other!! There is zero tolerance for newbies to UN*X, and they can be
quite rude about it. (Yes, I have been known to hang out there...rude as
they are, there are some wizards on there that can fix damn near
anything.....and no apologies to the #unix channel...it's YOUR turn to
get flamed! ;)

4) Read, practice, read some more, practice some more, etc.....
Repetition is the best teacher. Once you've fought with cron for a week
straight, you'll never forget how to use it!

5) If you've read until your eyeballs are about to pop, and you haven't
found the answer to your problem, ASK! Ask a friend, ask on IRC, you can
even ask me (Josh, webmaster@cmeinel.com). But if you write me asking
something that is easily found, don't be offended if I give a vague
answer.

READING IS YOUR FRIEND!
All that said, good luck!
-Josh
==================================================================
	*** Spook the wannabees...
==================================================================
From:Josh Fritsch <webmaster@cmeinel.com>

A suggestion you may want to make to newbies, would be to put something
similar to this in their .cshrc file:

echo "*********************************************"
echo "                                             "
echo " UNAUTHORIZED ACCESS LOGGED......            "
echo "  IP ADDRESS CAPTURE:                        "
sleep 4
echo "                       SUCCESSFUL!           "
echo "                                             "
echo "*********************************************" 

I know when I first started using this, it gave me a big 'ol ego boost
to
think I might be fooling some wannabe hacker out there :)
-Josh
=================================================================
	*** #90 Update
=================================================================
From:VM370x <VM370x@aol.com>

In regards to the article posted in the last hh about the "new" 
#90 scam (actually it's been around ever since SS7 was introduced), 
to the best of my knowledge, the scam only works on PBXs 
(private branch exchanges) or a line that has call forwarding 
ability turned on.  Just wanted to clear things up because a bunch 
of kids are going to be trying it on their friends lines wanting to 
dialup the temple of the screaming electron or something and it
won't work. 

later-     
sp3cialk     
AnThRaX Industries
=================================================================
	*** Firewall and IRC Client
=================================================================
From:nik <fanggang@turing.grid9.net>

Hi
I wrote to U about the ConSeal Firewall from Signal9
U can also get it from X-treme.org along with some DOS attax to 
try out against it.

Also, [A]lien does a cool version of mIRC called Darkeclipse
which has been modified with all that 7th spere stuff...

enjoy.
=================================================================
	*** FOR Command under Windows NT 4
=================================================================
From:Lars Troen <Lars.Troen@Merkantildata.no>

Hey!

I'm using the 'for' command quite a lot because I find it very handy,
and you can do much more with it than you've shown here. In NT4 this
command has become very sophisticated and can be used for many purposes
(it's not as advanced in w95 or nt351). And the use of double %% is only
necessary when you're using it from a batch file.

The thing that it's mostly used for is when dealing with programs that
don't handle wild cards. Wild cards in NT are not handled by the shell,
but by the program itself, therefore not all programs notice that
they're getting a wild card and will fail with 'File auto*.bat not found.'
or something similar.

Another thing is when you want to do something on many servers in a
domain. Then you can put the server names in a file and use this file as
an input set for the 'for' command. For example, if I want to copy a
file to a directory on all the servers:

servers.txt:
\\server1
\\server2
\\server3
\\server4
etc...

runme.bat:
@echo off
for /F %%s in (servers.txt)
do call copyjob.bat %%ss

copyjob.bat:
@echo off
::
:: This is batch file copies the file 'somefile.txt' to the share
:: 'fileshare' on the server given as a parameter. 
net use i: /d
net use i: %1\fileshare
copy c:\somefile.txt i:
net use i: /d

You might think that the one 'net use i: /d' is redundant, but you might
have mapped some drive at i: before you run this. If a program running
from this is still active you get a message about that. I usually also
redirect all the output to a file on one of the servers so I can go back
and see if the copyjob was properly done.

Just my $0.02

Lars
==================================================================
	*** Free Technical Library on the Web
==================================================================
From:LT <ltgrant@baka.com> 

Carolyn,
	I was reading http://www.happyhacker.org/defend.htm, and saw 
the little blurb about, "Sniffing and logging utilities.  
We don't know of a good book on that topic."  I know of a book that may
cover that to the extent that you want.  

It is _"Maximum Security: A Hacker's Guide to Protecting Your Internet
Site 
and Network", and I know there is a way to get the entire book for 
free legally.  Go to http://www.mcp.com/personal and go through the 
registration process choosing all of the areas of interest and you will
have access to the book, I believe it is under the Operating Systems and
Networking area of books.  

I think that the entire book seems to have a lot of good information
and resources.  I think that this is great service to provide for free,
and I think it would be worth notifying a lot of the list of for their use, 
because it also has a free book on UNIX.  I have a fair deal of free
time on my hands and would be willing to help.   		

LT

PS - I apologize if this e-mail is a bit incoherent and doesn't flow,
I am quite tired, and not thinking well, or at all for that matter.

[Dale: This site is an excellent resource!!! You can "check out"
books on the Web for 90 days for free!!! How many books can YOU read
in 90 days?!?!?!?]
__________________________________________________________________

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