I’ve used some phones running Android to check the GPS signal with some GPS test app. You just have to follow the instructions in the readme to make it work.īy setting up the HackRF in transfer mode, I initially “jammed” the whole GPS L1 band. ![]() Way off the mark! The tool compiled quite well on my machine and really works like a charm. ![]() After asking uncle Google, I came across “GPS-SDR-SIM” by Takuji Ebinuma and to be honest I didn’t expect a working tool. I already knew that there was some tool in the wild since last year. Okay, now that you’ve all read and understood this, back to our technical topic! WARNING: In most countries transmitting on these frequencies is prohibited by law! As satellite’s GPS signals are very weak while receiving on earth, transmitted signals with the HackRF will be very strong in comparison – use attenuators and/or shielding boxes, as GPS receivers of navigation systems are very sensitive! Don’t abuse this knowledge, it’s just a proof of concept! When I came to ERNW in 2014 I got in touch with Michael Ossman’s great HackRF One for the first time, and subsequently my thesis was based on SDR. ![]() In the past I was often fiddling around with SDR (Software Defined Radio), started with DVB-T sticks some years ago. The moment, when your team leader asks you to cheat at Pokémon GO…everyone knows it, right? No? Well, I do □ GPS Spoofing SetupĪs I’m not a gamer, the technical part was of much more interest – that’s the real gaming for me.
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