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The Griffin -team is looking for your ideas and comments. Join and show your support for Griffin.  An Alluring SweetenerIn his desire to get online and at the same time, check up on his old friend, Griffin finds himself tempted to buy a prepaid mobile SIM. Aware that the police are watching his every move, he stops in to fill up his taxi and purchases a prepaid SIM card across the counter. Given that he's the computer guru, he stays up to date with technology and has a dual SIM capable mobile phone. Using this he knows that the police can continue monitoring his phone number, whilst at the same time he can access the net independently. Continuing his taxi driving work for the evening, his down time waiting for passengers is spent searching for Nacros X references on old hacking forums and IRC channels, attempting to find clues... There's something that only he and Dallas know. A conversation which took place prior to the incident that sent him to prison. The search to confirm the re-emergence of Nacros X will depend upon a lure. He makes a post on an old forum under a pseudonym which declares Nacros X is a sellout to the cops, subtly hinting at this previous conversation. As there is nothing a computer hacker can not stand more than being discredited, the supposed Nacros X will have no choice but defend him (or her) self. Griffin just needs to hope that the bait will be taken... |
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Great comments, always great to see this kind of expertise on Wreckamovie. Thanks!
Dual SIM phones often have dual IMEI (the mentioned hardware ID) as well. The catch here is that the IMEI are hardcoded in ROM and linked together - the telco is likely to know that both IMEIs belong together.
Depending how IMEI is set up in the phone, it may be possible to reprogram. If it is in the flash ROM, it is changeable. If the owner is REALLY familiar with the phone, he may chip it with e.g. an FPGA programmed to intercept some memory addresses; may not allow arbitrary changes in IMEI but may allow forcing some bits that are 1 to zero. Or perhaps even with mere standard low-integration logic chips. Some older (maybe we could say ancient) phones stored IMEI in a serial EEPROM together with other configurations; changing that was fairly trivial. An old discarded phone can serve a nice function here.
Locating the phone may be hindered by attaching a highly directional antenna to the phone and aiming it to a distant BTS, possibly bouncing the signal from a suitable mirror (e.g. a skyscraper with metalized windows reflecting both infrared radiation (intention of the metalization) and radio waves (side effect) to further confuse directional finding. BTS can sense the distance of the phone (due to light being abysmally slow, there has to be time shift introduced to the transmission so the phone's broadcasting arrives to the BTS at the right time for the phone's assigned timeslot) and direction within about 120 degrees (the systems typically have three antennas, each covering a 120 degree sector). By limiting access of the phone to only one BTS we are also preventing triangulation.
Phones are fun in general. Imagine a relay controlled by a phone's ringer, attached to a building's power socket, causing a short circuit and tripping the breakers when called. (Can be also improvised from any commercially available remotely controlled power socket, with a wire loop between the pins. This, and a drop of superglue in the lock of the cabinet with the breakers, can cause a significant downtime.
Could also be a "low-tech" version, ie Griffin has a wifi capable phone and he has to go to a location with wifi whenever he needs to be online. The phone could still be hacked in some way that helps hide his location + also hides the fact he is capable of going online in the first place. The fact that Griffin is a taxi driver as well would allow him to go to various wifi hotspots + of course the various passengers could also help in communication by picking up and delivering for example memory cards with important information on Benjamin Dallas.
I think we will ask some experts on phones and stuff to make the hack as realistic (but also cool) as possible. In any case lots of possibilities around taxi driving and various ways to get online without people knowing about it.
Remember that scene out of that movie "The Core" where that guy from "Road Trip" blows on a bit of paper into a mobile phone to give it free long distance calls? Of course, that ability is all complete and utter BS, but to work in some tech hacking, hotwiring the mobile phone himself with a detachable chip is a good idea.
Maybe even using some kind of Faraday cage around the phone and leaving the antenna out and contactable while for the alternative SIM/chip was connected would be ok. That way, the phone tap would still pick up the monitored number at whatever network tower location it was last at before the Faraday cage was attached.
Does this make sense?
I think he must have a very hackable phone, probably something running Nokia Maemo. And I would love his phone to run some cool augmented reality stuff like in the shot I gave for the interface task:
http://www.wreckamovie.com/shots/show/2582
maybe we can get the Nokia Maemo team excited about this and work with us on some mockups of future devices.
he better have a phone capable of switching hardware IDs aswell, as the operator can track any phone - not the sim it currently has
if they can see him in two locations, they can get the data of all phones in both areas and find the one phone that overlaps and they've got his phone forever
he could either have a phone with open or custom hardware that would allow switching it in software or solder on a detacheable chip on it so he could switch it with one he'd keep in his wallet
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