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1992-09-26
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===== Phrack Magazine presents Phrack 16 =====
===== File 6 of 12 =====
****************************************************************
* *
* TAPPING TELEPHONE LINES *
* *
* VOICE OR DATA *
* *
* FOR PHUN, MONEY AND PASSWORDS *
* *
* OR HOW TO GO TO JAIL FOR A LONG TIME. *
* *
****************************************************************
WRITTEN BY AGENT STEAL 08/87
INCLUDED IN THIS FILE IS...
* EQUIPMENT NEEDED
* WHERE TO BUY IT
* HOW TO CONNECT IT
* HOW TO READ RECORDED DATA
* HOW I FOUND A TYMNET NODE
* HOW I GOT IN
*************
THE EQUIPMENT
*************
First thing you need is an audio tape recorder. What you will
be recording whether it be voice or data will be in an analog
audio format. From now on, most references will be towards data
recording. Most standard cassette recorders will work just fine.
However, you are limited to 1 hour recording time per side. This
can present a problem in some situations. A reel to reel can
also be used. The limitations here are size and availability of
A.C. Also, some reel to reels lack a remote jack that will be
used to start and stop the recorder while the line is being used.
This may not present a problem, more later. The two types of
recorders I would advise staying away from (for data) are the
micro cassette recorders and the standard cassette recorders that
have been modified for 8 to 10 hour record time. The speed of
these units is too unstable. The next item you need, oddly
enough, is sold by Radio Shack under the name "Telephone
recording control" part # 43-236 $24.95. See page 153 of the 1987
Radio Shack catalog.
*****************
HOW TO CONNECT IT
*****************
The Telephone recording control (TRC) has 3 wires coming out of
it.
#1 Telco wire with modular jack. Cut this and replace with
alligator clips.
#2 Audio wire with miniature phone jack (not telephone). This
plugs into the microphone level input jack of the tape
recorder.
#3 Audio wire with sub miniature phone jack. This plugs into
the "REM" or remote control jack of the tape recorder.
Now all you need to do is find the telephone line, connect
the alligator clips, turn the recorder on, and come back later.
Whenever the line goes off hook, the recorder starts. It's that
simple.
****************
READING THE DATA
****************
This is the tricky part. Different modems and different
software respond differently but there are basics. The modem
should be connected as usual to the telco line and computer. Now
connect the speaker output of the tape player directly to the
telephone line. Pick up the phone and dial the high side of a
loop so your line doesn't make alot of noise and garble up your
data. Now, command your modem into the answer mode and press
play. The tape should be lined up at the beginning of the
recorded phone call. Naturally so you can see the login. Only
one side of the transmission between the host and terminal can be
monitored at a time. Going to the originate mode you will see
what the host transmitted. This will include the echos of the
terminal. Of course the password will be echoed as ####### for
example, but going to the answer mode will display exactly what
the terminal typed. You'll understand when you see it. A couple
of problems you might run into will be hum and garbage characters
on the screen. Try connecting the speaker output to the
microphone of the hand set in your phone. Use a 1 to 1 coupling
transformer between the tape player input and the TRC audio
output. These problems are usually caused when using A.C.
powered equipment. The common Ground of this equipment
interferes with the telco ground which is D.C. Based.
I was a little reluctant to write this file because I have
been unsuccessful in reading any of the 1200 baud data I have
recorded. I have spoke with engineers and techs. Even one of
the engineers who designs modems. All of them agree that it IS
possible, but can't tell me why I am unable to do this. I
believe that the problems is in my cheap ass modem. One tech
told me I needed a modem with phase equalization circuitry which
is found in most expensive 2400 baud modems. Well one of these
days I'll find $500 lying on the street and I'll have nothing
better to spend it on! Ha! Actually, I have a plan and thats
another file.....
I should point out one way of reading 1200 baud data. This
should work in theory, however, I have not attempted it.
Any fully Hayes compatible modem has a command that shuts off
the carrier and allows you to monitor the phone line. The
command is ATS10. You would then type either answer or originate
depending on who you wanted to monitor. It would be possible to
write a program that records the first 300 or so characters then
writes it to disk, thus allowing unattended operation.
**************
HOW CRAZY I AM
**************
PASSWORDS GALORE!!!!
After numerous calls to several Bell offices, I found the one
that handled tymnet's account. Heres a rough transcript:
Op: Pacific Bell priority customer order dept. How may I help
you?
Me: Good Morning, this is Mr. Miller with Tymnet inc. We're
interested in adding some service to our x town location.
Op: I'll be happy to help you Mr. Miller.
Me: I need to know how many lines we have coming in on our
rotary and if we have extra pairs on our trunk. We are
considering adding ten additional lines on that rotary and
maybe some FX service.
Op: Ok....Whats the number this is referenced to?
Me: xxx-xxx-xxxx (local node #)
Op: Hold on a min....Ok bla, bla, bla.
Well you get the idea. Anyway, after asking her a few more
unimportant questions I asked her for the address. No problem,
she didn't even hesitate. Of course this could have been avoided
if the CNA in my area would give out addresses, but they don't,
just listings. Dressed in my best telco outfit, Pac*Bell base
ball cap, tool belt and test set, I was out the door. There it
was, just an office building, even had a computer store in it.
After exploring the building for awhile, I found it. A large
steel door with a push button lock. Back to the phone. After
finding the number where the service techs were I called it and
talked to the tech manager.
Mgr: Hello this is Joe Moron.
Me: Hi this is Mr. Miller (I like that name) with Pacific Bell.
I'm down here at your x town node and we're having problems
locating a gas leak in one of our Trunks. I believe our
trunk terminates pressurization in your room.
Mgr: I'm not sure...
Me: Well could you have someone meet me down here or give me the
entry code?
Mgr: Sure the code is 1234.
Me: Thanks, I'll let you know if there's any trouble.
So I ran home got my vcr (stereo) and picked up another TRC
from trash shack. I connected the vcr to the first two incoming
lines on the rotary. One went to each channel (left,right).
Since the volume of calls is almost consistent, it wasn't
necessary to stop the recorder between calls. I just let it run.
I would come back the next day to change the tape. The vcr was
placed under the floor in case a tech happened to come by for
maintenance. These nodes are little computer rooms with air
conditioners and raised floors. The modems and packet switching
equipment are all rack mounted behind glass. Also, most of the
nodes are unmanned. What did I get? Well alot of the logins
were 1200, so I never found out what they were. Still have 'em
on tape though! Also a large portion of traffic on both Tymnet
and Telenet is those little credit card verification machines
calling up Visa or Amex. The transaction takes about 30 secs and
there are 100's on my tapes. The rest is as follows:
Easylink Compuserve Quantumlink 3Mmail
People link Homebanking USPS Chrysler
Yamaha Ford Dow Jones parts order
And a few other misc. systems of little interest. I'm sure
if I was persistent I'd get something a little more interesting.
I spent several months trying to figure out my 1200 baud problem.
When I went back down there the code had been changed. Why?
Well I didn't want to find out. I was out of there! I had told
a couple of people who I later found could not be trusted. Oh
well. Better safe than sorry.
**************************************
Well, if you need to reach me,try my VMS at 415-338-7000 box
8130. But no telling how long that will last. And of course
there's always P-80 systems at 304-744-2253. Probably be there
forever. Thanks Scan Man, whoever you are. Also read my file on
telco local loop wiring. It will help you understand how to find
the line you are looking for. It should be called
Telcowiring.Txt
<<< AGENT STEAL >>>
Downloaded From P-80 International Information Systems 304-744-2253 12yrs+