HackRF One is also able to receive data from GSM transmission but it needs a software called wireshark to decode the data. At 84 MHz, the sound sent from the computer’s microphone was heard when tested using a commercial radio receiver showing that HackRF One is truly capable of transmitting FM Radio. The frequencies used in the experiment were 84 MHz, 850 MHz, 1.9 GHz and 2.5 GHz. The FM transmission was checked with a spectrum analyzer. The FM Receiver shows a good signal reception from commercial FM Radio stations and is able to extract the music from those FM channels. The systems are FM receiver, FM transmitter and GSM Receiver.
The aim of this thesis is to demonstrate that HackRF One is a software-defined radio by implementing a few different communication systems on a wide range of frequencies. One of the popular software-defined radio available in the market is HackRF One. Instead, a few compromises were made resulting in software-defined radio, where a huge part of the processing is done through a processor and software while some parts are done through hardware and the hardware can be adjusted by the software. Currently, the idea of software radio cannot be fully implemented yet. ADC/DAC and antenna are the main hardware needed for this. Software Radio is the term used for an equipment that is capable of processing a signal wholly on the software for an unlimited amount of bandwidth.
The inefficient usage of resources led to an idea for Joseph Mitola who introduced the term Software Radio. Various communication systems have emerged in the last two decades where each of the system needs different equipments for testing and usage. The duo concluded their research by showing a proof-of-concept system that demonstrates their IMSI catcher employing passive as well as active techniques.Software-defined radio implementation with hackrf one: FM transceiver, jammer and GSM receiver.īachelor thesis, Universitas Pelita Harapan. Apple, as a result of conversations with the duo researchers, has implemented a new technology in iOS10 that allows handsets to exchange pseudonyms and not identifiers, helping mitigate the threat. The researchers reported that the mobile OS companies, including Apple, Google, Microsoft and Blackberry, and the operators such as GSMA, have been working with them to ensure the future protection of the IMSI number. The good news is that you can disable the Wi-Fi calling feature on your device, but Wi-Fi auto connect can only be disabled when such a network is in range. The issue of the feature-man-in-the-middle (MITM) attacks, allowing attackers to intercept the traffic from a smartphone. EAP-AKA exchanges are encrypted, but the problem is that they are not protected by a certificate. Like the WiFi auto connect feature, the Internet Key Exchange (IKEv2) protocol used for authenticating WiFi calling is based on identities such as the IMSI number, which are exchanged over EAP-AKA.
Gsm using hackrf one android#
Thus, WiFi calling, which is supported on iOS and Android devices, allows users to make voice calls over WiFi by connecting to the operator's Edge Packet Data Gateway (EPDG) using the encrypted IP security (IPSec) protocol. This technology is different from voice calling on WhatsApp or Skype app which uses voice over Internet Protocol. An example follows: The researcher also demonstrated another attack vector whereby attackers can hijack the WiFi calling feature offered by mobile operators.
Many online articles on the topic Wi-Fi can be turned into IMSI Catcher to Track Cell already from the year 2015.