Happy Hacker Digest April 15, 1997
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H a p p y h a c k
i n g !
Table of Contents
* Cookie Crunch
* Psuedo-Anon Mail From Port 25
* IP Spoofing
* Unsecured Telnet Port
* Linux Woes
* Understanding Unix
* New Linux Bug
* More On Social Engineering
* Domain Info
* Dos Telnet
* PGP Distributed Event
* Phrack Magazine
* Fighting Spam From Behind A Firewall
* by-pass Needed
* Hacking Windows NT
* Local Hacker Requests
* Note From Matt
*** Cookie Crunch
From: Greg Chamberlin <firstname.lastname@example.org>
There is some good information about "cookies" at
http://www.illuminatus.com/cookie.fcgi You should find what is
"cookie" at this site.
From: Stefan Anthony <email@example.com>
>How do you do this, set read only attribute to the cookie? I
>have a Macintosh with netscape.
Setting a file's attributes to read only on the Mac is very simple.
Simply locate and select the MagicCookie file in the Finder (it's in
your Netscape folder, found in your Preferences folder of your System
Folder), select "Get Info" from the File menu, and click on the
"Locked" check box in the "MagicCookie Info" window.
might want to consider "customizing" your MagicCookie file by visiting
those sites and logging on - the New York Times web site, for example.
When you're done and you're sure that you have only the cookies you
want written to your MagicCookie file, quit Navigator and then do the
>Can you screw up a cookie in other ways?
What do you mean by this?
There are several utilities that can automatically delete your
MagicCookie (and cookies.txt if you use Internet Exploiter), as well
as utilities like Cookie Cutter that remove "unknown" cookies from
your MagicCookie - for example you could set up Cookie Cutter to
remove all but the cookie created by the New York Times website.
>Does anybody have an explanation to the code inside
Try searching past articles at Wired's Webmonkey. There was recently
decent piece on exactly how cookies and their contents work.
- Stefan Anthony
*** Psuedo-Anon Mail with Port 25
>I have a question that I hope you will be able to answer for me.
>GTMHH (Vol. 1 Number 2) "How to forge email -- and spot forgeries,"
>you go over TELNETing via port 25 so as to send pseudo-anonymous
>email. However, the servers (is that the correct terminology)
>apparently are capable of identifying one's email address. Is
>possible so as to prevent a system from identifying one's email
>address (name and domain)? If so, could you please enlighten
>the method(s) :-)
That's the beauty of faking email. YOU HAVE TO FIND THE RIGHT SERVER
FOR THE PURPOSE. Find servers running old versions of sendmail.
*** IP Spoofing
please keep this post anonymous:
Lately I have been reading a lot about "Ip spoofing" in which
an person(s) can assume your IP address and thereby send packet with
your Ip info allowing them to have access to any and all of your
personal files. My question is..exactly how do people do this? Is
there some type of program that they make or run or is it some
completely easy way to do this through Win95 or Unix?
*** Unsecured Telnet Port
From: "Allen C. Benson" <firstname.lastname@example.org>
I was probing a subnet 206.***.021 for other assigned IP addresses
got 30 hits. I telneted to the first one which was 206.***.021.065
(postnet1.accessnv.com). To my surprise, I connected to this machine
without a USER ID or password!
Here's the opening screen:
start screen output++++++++
+------- POSTNET1 EDIT --------+ +--------------------+
&Main Edit Menu
& &10-100 1
& & Link D
& &>M31 Line
& 00-000 System
& & B1 *
& & LAN session
& 20-000 Ethernet
& & B2 *
& 30-000 Serial WAN
& &20-100 Sessions &
& &> 1 Active
& & Qual Good 7
& & O ascend1
& & 112K 2
& & CLU 0%
ALU 1% &
& &20-300 WAN Stat & &20-400 Ether
& &>Rx Pkt: 1184853^& &>Rx Pkt:
& & Tx Pkt: 1189652 & & Tx Pkt:
& & CRC:
Col: 564 &
& &00-100 Sys Option & &00-400 HW
& &>Security Prof: 1 ^& &>BRI
& & Software +4.6C+ & & Adrs:
& & S/N: 6486531 v& & Enet
Press Ctrl-n to move cursor to the next menu item. Press return to
select it. Press Tab to move to another window --- thick border
indicates active window.
end screen output++++++++
This organization's computer appears to have a security hole you could
drive a VW bus through. (May not last long once all you 'happy
hackers' drop in for a visit.)
A friend told me about an IP address on this site that sent him some
unsolicted porno email garbage. Couldn't find out who they were
fingering or using the 'who is' command. Couldn't find a path
running traceroute, either.
I used a windows client called NS-Batch (available in both 16- and
32-bit versions) to probe their subnet (the first three octets of the
IP address) for other IPs and found 30 assigned IP addresses.
tried telneting straight into any of the other 29 IP addresses at this
site. I don't think my heart could take the excitment.
octet of the IP addresses run sequentially from .065 through .094.
(In-other-words, 206.029.021.065, 206.029.021.066, 206.029.021.067,
206.029.021.068, 206.029.021.069, etc.)
This might be a good site for a little Sunday afternoon port surfing.
[Matt: I telnetted to this IP, which seemed to be an Ascend Max (I'm
unsure of the model number... 4000?) and got no response. You stumbled
across what could have been a huge problem for the ISP running this
*** Linux Woes
From: James Mastros <email@example.com>
> >Linux refuses to recognize my internal modem.
> Linux does something no other OS I have ever worked with does.
> configuration files for things like modems and video often require
> ASCII order. If you have the driver listed in the file out
> Linux can't find it. Just a thought, but give it a try.
If your modem is on a funky IRQ, you may need to do something along
the lines of "setserial /dev/ttyS2 irq 10". This would set the
ttyS2 (com3 under DOS) to 10, where it is on my system. Then do
"minicom" and CTRL-Z, O to configure it. (BTW - you likely should
set the "META" key to ESC (first option under keybord/display
I do not know what you mean by "The configuration files for things
like modems and video often require proper ASCII order.", could you
please enlighten me?
James Mastros/ The Orb
Flame me by direct e-mail, not dc-stuff.
From: firstname.lastname@example.org (LiquidMetal)
I'm still trying to figure out a way to check the amount of disk-space
left on my hard drive. can anyone please just give me a simple Linux
command that can tell me how I can do just that? Thanx!
From: pheesh <email@example.com>
For all the newbies who just installed Linux on their
home box, and have a SLIP or PPP account, try this:
Log in as root and use an editor to edit the file
/etc/HOSTNAME. Change this to any name you like.
example:whitehaus.gov or just run netconfig and
change your hostname there. Next add a user with
the name of your choice. Example: ThePrez. Login
as Theprez, and change to your root console <ALT><F?>
connect to you SLIPP or PPP account and change back
to your new user console. Now go into pine and
send a letter. Voila, instant anonymous email.
Id suggest trying this on yourself first.
Don't forget to reboot after changing your hostname.
Note: Id suggest before posting to any newbie
group, try to find the info yourself. There are
countless resources out there, 'sides its more
"The hardest thing to change is a persons mind"
From: psst <firstname.lastname@example.org>
I'm writing you because of finger program.
I explain you: I've got that program running in my linux system, and
don't call me newbie (please !!! nOOO ;) But really I can't see
reason to close that port. All I see is that someone can see users
are log in that moment in your system, but nothing more (isn't it?)
Or is there a bug that I dont know, or something they can do in order
to obtain my passwd file.....
I DON'T KNOW !!!!!!!!! :(
Please, let me know.... :( ---> :)
And I've got some philosophic question:
Why is password file with read attribs for everyone? It could
work perfectly without it, passwd command is suid !!
Waiting for your answers.....
PD: I'm writing you from Spain, so sorry about my english (I guess,
my letter is well-written, please let me know !!! I'll call the
*** Understanding Unix
From: playa <zeigler@ucsub.Colorado.EDU>
>I was wondering what I had to change to keep from getting msgs when
>people use the write command or the msg command.
I am new, but i know that my commands, (at a school also), are
yes and mesg no yes and no being on and off :)
*** IRC Questions
Hello again: more answers to your IRC questions: as always if you post
any part of this message, please keep me anonymous. Cheers :)
>I run an ftp on a Mac (supplied by school) and the ftp program does
>have a way to distinguish users, since they all log on as the same
>login/pass. But, it does show their IP. The only time
that my ftp is up is
>when I am on IRC. So everyone on is on IRC as well. SO,
is there a command
>that will give me a nick from an IP address? Any help would
Just type: /who *domain.name (for example if I wanted to know all
users on your machine I would type:
The only instances where this doesn't work is where the user is +i
(invisible) (ie: where the User has typed: /mode User +i ) which means
they don't appear in /who listings.
Hope that helps.
*** New Linux Bug
From: "OD|phreak" <email@example.com>
LINUX SECURITY BUG IN IP Masquerade
A problem exists in IP Masquerade under Linux which allows traffic to
be passed to external networks even after the gateway host has been
halted. As long as a connection has been established from an internal
machine via the IP Masquerade gateway to an external host and the
Ethernet interfaces inside the machine are still being supplied power,
that connection will stay online in a fully interactive state.
Even worse, that connection will stay online even if the IP Masquerade
gateway machine is rebooted. During a soft reboot, the connection
will stay online in a fully interactive state. During a cold
the connection will lose interactivity until the IP Masquerade gateway
machine comes back online. After that, the connection will regain
During an incoming or outgoing attack, systems administrators may use
the "kill switch" tactic to stop the attack and shut down the gateway
machine involved in the attack. This creates a false sense of
security with that systems administrator thinking that the attack has
been successfully stopped. In reality, the connection in question
totally unaffected by the system shutdown.
*** More on Social Engineering
From: "Stainless Steel Rat" <firstname.lastname@example.org>
If people are really interested in learning more about some stuff
that really relates to SEing, they should check out NLP
(Neuro-Linguistic Programming) on the web. NLP is the study and
practice of using words, body actions, proximics, and other
psychological techniques to prescribe human behavior. Below are
of the NLP URLs I frequent. Unfortunately, NLP is often (and
mistakenly I might add) associated with hypnosis, so you might
have to shift through some new age garbage to find what you're looking
(sort of written for hippies, but it has some good stuff)
(a whole boat load of of good links)
(some reel good intro. stuff here)
*** Domain Info
From: Eric Anderson <email@example.com>
> I am in need of a bit of help.
This is my situation: Two of my
> friends are receiving e-mails from a person who will not reveal his/her
> identity. These letters contain information which only someone
> observing my friends closely would know. The person made a
> though----he/she gave a real e-mail address rather than some fake
one or one
> such as the one I am using now. The e-mail address is firstname.lastname@example.org
> barint.on.ca exists yet when I try to finger this address, it says
> access is refused. Whois says that the mailbox
> does not exist. I have tried to reach the sysadmin with no
luck and I have
> tried to track down the address over the Internet but with no first
> name it is rather difficult. If you have any suggestions, I
> appreciate hearing them. If you would like to post this to
the Happy Hacker
> list, that might also help. My friends are starting to get
worried and they
> do not know much about computers. I am a Newbie so am not familiar
> everything yet.
#S .CA Domain;
#O Barrie Internet Inc.
#C Leanne Knebel
#T +1 (705) 733 2476
#P Barrie Internet, 169 Bayfield Street,
Barrie, Ontario, Canada
#L 44 53 N / 77 7 W city
#R Automatically generated from a .CA
domain registration form
#W email@example.com (UUCP Liaison);
Fri May 24 19:53:28
# barint.on.ca is a For-Profit
# Barrie Internet provides communication
services to clients
# in the Barrie and surrounding
# received: Wed, 22 Feb 1995 19:00:00
# approved: Wed, 1 Mar 1995 19:00:00
# modified: Thu, 23 May 1996 20:00:00
Eric Anderson First Virtual Holdings CyberIron
Unix Sys Admin <http://www.fv.com/>
<firstname.lastname@example.org> San Diego, CA
"..and then my doctor said my nose wouldn't
bleed so much
if I just kept my finger outta there!"
-- Ralph Wiggum
*** DOS Telnet
From: "Kevin P. Kreutzer" <email@example.com>
Where can I get a telnet for MSDOS? I mean I do not want the Win95's
Thank you for your time.
*** PGP Distributed Attack
From: Aleph One <aleph1@DFW.NET>
CYBERSPACE, 31 March 1997 - This is to announce the first truly
distributed attack on the popular PGP encryption/authentication
program. In 24 hours, users all across cyberspace can assist in
'factoring' a 1024-bits PGP public key, using a Java applet specially
written by a team of 'cypherpunks'.
To make this attack successful, we need as many people as we can find
to run this program on their computer. As Java applets can be run
by anyone with an Internet connection and a modern operating system
like Windows '95(tm), OS/2(tm) or Linux(tm) with a web browser such
as Netscape Navigator 2.02 or above, everyone can join in. All you
need to do is download the applet from the URL given below, and run
it. The applet will send the results of its factoring attempts to
a preconfigured e-mail address automatically.
Some background information: a PGP key is considered unbreakable
because it consists of a product of two very large prime numbers. The
only way to 'crack' the key is to find the two prime numbers. This
applet does exactly that. Each user who downloads the applet also is
assigned a range of numbers to try. If at least 144,000 users download
the applet, and run it for 24 hours on a computer at least as powerful
as a 486, the entire keyspace will be searched. At least one of these
users will then find the two prime numbers that make up the secret
key, and then the key has been 'cracked'.
(Note to techies: the method used is the Distributed Special Number
Field Sieve, as developed by David Scott <firstname.lastname@example.org>)
The URL for the factoring applet is
To keep track of the number of users that are running the applet,
and to communicate with other participants in this exciting event,
the IRC channel #pgp-factor will be available tomorrow all day.
-----BEGIN PGP SIGNATURE-----
-----END PGP SIGNATURE-----
Submissions for this group:
Comments about this group:
Guidelines for submission are posted weekly to the newsgroup.
The PGP FAQ is at <URL:http://www.pgp.net/pgpnet/pgp-faq/>
*** Phrack Magazine
From: G P R <route@RESENTMENT.INFONEXUS.COM>
-----BEGIN PGP SIGNED MESSAGE-----
P H R A C K M A G A Z I N E
- - [ P H R A C K M A G A Z I N E ] - -
P H R A C K M A G A Z I N E
Phrack Magazine, the premier underground electronic publication, is
proud to announce issue 50.
Some of the features in this issue: TTY Hijacking, SNMP
vulnerabilities, Cracking Windows NT passwords, PC Application
insecurities, and much more.
This issue is also much more code-laden than any previous issue, with
just under 5000 lines of C source code.
Due to sheer volume, we are no longer mass-mailing Phrack Magazine.
Please trod on down to a distribution site nearest you:
http://www.fc.net/phrack [ SOON TO BE -> http://www.phrack.org
If you have a fast link and wouldn't mind offering Phrack Magazine to
the world, (we are always happy to have another distribution site)
and let us know. To be added to the mailing list, please email
Comments and submissions should be sent to:
[human acquiescence is as easily obtained by terror as by temptation]
-----BEGIN PGP SIGNATURE-----
-----END PGP SIGNATURE-----
[Matt: I've been hooked on Phrack for years. Read every issue (even
the old ones; even though they're outdated, they can be useful)!]
*** Fighting Spam From Behind A Firewall
From: Meino Christian Cramer <email@example.com>
-----BEGIN PGP SIGNED MESSAGE-----
I have a problem, which needs a "hackish", but "legal" solution.
In my company I am sitting behind a firewall. The company uses
an intranet for information interchange and a "Company wide web".
Some newsgroups are mirrored inside the company. We can recieve mail
from outside the intranet and can answer mails to some selected
For whatever reason a damned commercial porn site has discovered my
intranet address, maybe by scanning the newsgroups, I have
answered some questions to Linux there.
They wrote in their mail: "To remove yourself from the
mailing list, response this mails with ..... "
The problem is: 1.) I am not allowed to write a mail
to theis site, the firewall says "NO!"
2.) If I will forge a mail with this intranet address
from my home Internet access, this "company inside"
address becomes known outside. I better don't imagine
what will happen then.
3.) If I will answer with my private address, the "remove"
will fail, because it does not match the original intranet
So, WHAT? the hell should I do to get rid of this d****d
commercial mails ???
Thank you in adnvance for all help.
Sorry for my buggy english, next mail will be in "C"... ;-)
...who dances with modems...
E-Mail: Meino Christian Cramer <firstname.lastname@example.org>
This message was sent by XFMail
-----BEGIN PGP SIGNATURE-----
-----END PGP SIGNATURE-----
From: Robert Finger <email@example.com>
I love the idea of corewars, but I would like to see one more angle
to it. It would be really cool if the winners/ losers would publish
short explanation of what they did to win. (if you don't want to give
details, that is cool but give at least generalizations about the
attack.) Also it would be really cool to hear what the other team did
to prevent the attack. fe: what patches etc they came up with to make
their system secure.
*** by-pass Needed
From: firstname.lastname@example.org (Olly S)
Just a quick question. I am having trouble exploring a system
is armed with visionsoft disclock v5. From what i have found it needs
a file called by-pass to get in. Can anyone send me a copy of this
file or is there such a thing as a Tsr unloader that would run under
windows 3.11 as i can only get to dos under a windows shell.
P.s A system disk does not work either as the hard drives disappear.
I Got Places To Go........
Things To See..............
And A Lecturer Who's Going to Kill Me!!!!!!!
*** Hacking WindowsNT
From: TorinEdge <email@example.com>
A friend of mine (superhacker range) is able to get into a win95 or
box and edit/delete/create anything he pleases.... he uses a combo
winIPcfg and a finger util. all he needs to get in is a username(I
think, I know he can do it if he has a username and password, it
doesn't matter what his access is set to.)
If ya can answer that then I hail to u
----',-@ The Ace @-,'---
[Carolyn: It depends on how Win NT is configured. Of course, as shown
in the GTMHH Beginners Series No. 2 part 2, Win 95 is trivially
hackable. You can get a pretty good picture of almost all the NT
exploits that have been discovered at
*** Looking for Local Hackers
Goldsboro, North Carolina
Nicolos L. Mason
*** Note From Matt
A few things:
I'm sure, if I haven't already, I will make (possibly egregious)
technical errors. I welcome criticism and correction. If you have
suggestions, please send them my way - I (generally) have an open mind
about most things. :)
Also, I want to explicitly state the criteria for your posts making
to the digest: Posts must either ask for information or provide
information about computer security. That includes social engineering,
cracking, phreaking, programming, and abstract ideas related to the
field. All requests for local hackers will be consolidated as above.
Of course, nothing is too technical, but the Happy Hacker Digest is
directed to computer security neophytes. Keep that in mind when
If you have anything that you want me to see (as opposed to the whole
list: flames, corrections, critiques, etc..) just use my email
address, firstname.lastname@example.org , I'd love to hear from you.