Hacking Payphones - Telstra Style

OK
well picture this... its around 4am your stumbling out of the dance club
your mobile phone battery is dead and you remember you need to call a
taxi or someone to come and get you ... after walking for an hour around
the city streets you finally find a public that phone that hasnt been
trashed by someone with a sledge hammer, so you dig into your pocket to
find some change and you realise *doh that last drink took all my change*
well from here you have a couple options ... you can look like a tightass
and reverse the charges like anyone will choose this heh... or you can
scam Tel$tra outa some cash with a drinking straw...

YES
a humble drinking straw... naturally if you are reading this you are like
me and everyone else i know and wouldnt have even considered the 1st option
i said ... All the above events could lead you to needing to make the
free call or of course you just dont wanna pay for something if you dont
absolutely NEED too ;o).

Well
i guess i should let you in on the secrets of making free calls with the
straw shouldnt i, this works on most public phones in Australia and possibly
others around the world if you try this in other places other than Australia
please let us know how you went and if you needed to do anything special
to get it to work.

Anyway
back to HOW you do this... basically all you need is a drinking straw
i have found the ones from McDonalds work the best because they seem to
be slightly thicker than the pissy ones you get at the corner store so
have a look around if there is a Maccas near by go and pinch a straw or
2 from them if there ar no shops open or near by have a look around on
the ground you are bound to find a straw of some description close to
a phone box. Once you have the tools you need your half way there !!!

Now just fold the straw in half and slip in down the left hand side of
the coin slot normally it wont go down far roughly about 2-3 inches is
all that is needed but you should feel the coin slot slope off to the
left a little bit more and there will be like a latch you will feel what
i mean when you do it ... the best way to describe it is like a speed
hump i guess, it takes a little while to get it the 1st time but once
you do it a couple of times you should be able to master it and be making
calls within a few seconds of getting the straw into the slot... anyway
once you have found the latch you need to push the straw just past that
about 1-2 cm's from there you should be able to dial the number you wanna
call and once the person picks up the phone you should hear the coin slot
attempt to drop the *coins you placed into the phone* into the deposit
box, and because the straw has broken the contacts just as the coin would
do if it was there the phone thinks you have tried to make a legit call
and connects you as it would do if you had paid for the call and BINGO
you made your call you got your ride and whats even better is it cost NOTHING.

Sorry
there is no Technical Explanations as to why exactly this works but Tel$tra
are very tight fisted with their phone specs and anything to do with them
making money just like most Telco's in an attempt to stop this happening
BUT as the past has shown where there is a will to get around something
there is also a way to do it its just a matter of finding that way...
so if you have any info or links on the Telstra Payphones specs drop me
a line and let me know

OB-1

1.)
OsReview :
Red Hat 6.1 -
L33tdawg

2.)
Lockdown
: Securing your Linux box (part 1) -
L33tdawg

3.)
Remote OS
detection via TCP/IP Stack FingerPrinting -
Fyodor

4.)
Installing
Linux on a Laptop -
OB-1

5.)
Hacking
payphones - Telstra style -
OB-1

6.)
Testing modems
with a DoS attack -
L33tdawg

7.)
Avoiding detection
-
L33tdawg