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- +-------------------------------+
- | |
- | A. T. M. Fraud Made Easy |
- | |
- | summary and research by |
- | Count Zero |
- | |
- | (A CHiNA Info-Net Prod) |
- | |
- +-------------------------------+
-
- Have you ever looked longingly upon the sight of your local PULSE machine
- and thought, "There must be some way that I can make some money REAL easy
- here."?
-
- Well, there is. But it won't be easy. Protection methods can be overcome,
- but the technology involved must be understood IN ITS ENTIRETY before an
- [PAUSE] attempt at illegal access is to be made. There are hundreds of people,
- guests of the state, that figured their plans infallible, only to fall
- victim to a well-hidden camera.
-
- This article will not be a lesson on HOW to break into the machine, it is
- merely a summary of the operations involved with a normal ATM transaction.
- This information is being presented on a "for information's sake"-only
- basis. I, Count Zero, do not promote nor remotely condone any illegal
- acts of any sort. So there.
-
-
-
- I. MAGNETIC STRIP FORMAT
-
- This would seem to be the most efficient method of trying to access illegal
- sums of cash. You could:
-
- a. steal somebody's card and PIN code
- b. synthesize a card
- c. attempt to "jackpot" the system
-
- We will only look at option B. As "A" is up to your own devices and "C" has
- several good text files written about it already. So "B" it is.
-
- [PAUSE] Let's look at the format of the data written to the magnetic strips. This
- has been taken from a recent HARTWELL, INC manual.
-
- [ XX XX XX XX XX XX XX XX ] [ YYYY ] [ - 20 CHARS - ] [ ZZ ZZ ZZ ] [ CC CC ]
- \-----------------------/ \------/ \--------------/ \----------/ \-------/
- Your individual acct. PIN Name of card Bank route CHKSUM
- number/serial code Code issuee code/rem.
- access #
-
- For validation, each entry is written twice but not written here for
- ease of typing. But it is repeated in the form of:
- "ACCT NUM" "ACCT NUM" "PIN CODE" "PIN CODE" etc...
-
- These codes may be examined by building a simple code-reader as many
- have done which can be easily interfaced to your IBM-PC. Full plans
- to be put into a future CHiNA newsletter.
-
- If you were to attempt to write a magnetic strip or change a currently
- existing one, you would need to be using a head-write circuit based on
- the popular Motorola BCX119221-A...C series of head control chips.
-
- NOTE: Make sure to change the last 2 values! They constitute the
- checksum of the entry.
- Merely add all existing characters written (only the first entry, not both
- [PAUSE] of them) using the following chart:
-
- CHARACTER VALUE
- --------------------------------
- 0..9 0..9
- A..Z 10..36
- EOL 37
- EOT 38
- CLR 39
- HMX 40
- PTT 41
- RIA-1 42
- RIA-2 43
-
- I doubt anyone in the communications biz needs an explanation of these terms
- so I'll move on.
-
-
- II. ATM HARDWARE
-
- Usually consists of:
-
- ------------------------------------
- | |
- [PAUSE] \-----\ | B |
- | A | | |
- \-----\ ------------------------------------
- | |
- | ----------- /---/ E |
- | / / / / ---- |
- | / C / / D / F |
- | / / / / ---- |
- | ------------ /---/ |
- | |
- ------------------------------------
-
-
- A. Camera Mount
- B. Hidden Voice-Activated recorder & printout link
- C. Display Monitor
- D. Options buttons
- E. Card Slot
- F. Receipt Slot
-
- Your machine may vary slightly. But the concept will almost always hold true.
- Simple rules for each.
-
- A. Wear a paper bag or mask. See also Part II A
- [PAUSE] B. Do NOT speak. This is the most crucial part! See also Part II A
- C. Nothing
- D. Wear gloves
- E. See Part I
- F. TAKE YOUR RECEIPT AND BURN IT!!
-
- One of the neat flaws in many machines made prior to 1989 involved the
- use of the "CANCEL" button. This button was made to be pressed when the
- user decided, at any time during the transaction, that he didn't wish
- to continue. The display would jump immediately to:
-
- "TRANSACTION CANCELLED - CHOOSE ANOTHER?"
-
- This was all well and good, but the machines did not disable this feature
- between the time your cash was dispensed and you were prompted for your
- next activity. In effect, you could push the "CANCEL" button after your
- money has been withdrawn and it would not be added to your account record!
-
- THIS STILL WORKS IN MANY PLACES! OVER 85% OF ALL MACHINES MADE BEFORE MAR.
- 1989
- STILL HAVE NOT BEEN UPGRADED.
-
- Although most machines of that period would only work if you were withdrawing
- amounts larger than $20 (usually $25 is the next possible choice!)
- [PAUSE] This is ideal if you are using another's card!
-
-
- II A. CAMERA/SOUND HARDWARE
-
- You can go other routes when dealing with camera systems. You do not have
- to wear a bag on your head (unless the cosmetic improvement is quite large)
- Thin alloy metal such as common aluminum/tin foil, which are full of
- impurities,
- react in a bizarre way when photographed through the special lenses that are
- commonly used. The effect is to "blur" or "bleed" the image, rendering it
- indestinguishable from an accident in your local Sherwin-Williams store.
- Most people prefer to make a "headband" of this metal, lined with copper
- wire in a sine wave pattern when accosting a machine. You should
- seriously consider this possibility!
- For further reading on this subject, consult:
-
- BANKER'S WORLD - Apr 1989
- "Where Have All the Dollars Gone?"
- pp 24-29
-
- P. I. - Apr 1989
- "The Last Straw"
- pp 37-41 (p 38 in particular has a nice
- [PAUSE] diagram. Fig 1)
-
-
- Sounds, these articles also suggest an indirect method of dealing with the
- voice-activated recording device. Oddly, a pure square wave tone (roughly
- around 3100 hz) will cause a major screwup in the sound-sensing abilities
- of the recorder. It usually will have to be replaced. Suggested volume,
- given at 6" range is 8.5+ db. Obviously, anything louder will do.
-
- An interesting side-note is that this has become a past-time of suburban
- teenagers!
-
- Well, hope this gets you started! More will be coming in the next
- exciting file!
-
- ---------------------------> OVER AND OUT! -----------> COUNT ZERO
-
- HAHAHAHA NAPPA IS A BUNCH OF FLY-BY-NIGHT LOSERS, EH CONFLICT?!
-
- Call us on:
-
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- [PAUSE]
-
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-
- A big hello to:
- Rubix the Cube, The Conflict, Monalisa Overdrive
-
- /e
-
-
- +- Shamelessly Leeched from The Mudd Club -+
- Press a key...
-
- CHiNA Discussion [5]: 2 of 2
-
- [Message Bases [5-2/
-
-
- Which G-file (Q=Quit) ?
-
-
-
- Another file downloaded from:
-
- !
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