Search results for: dragonos

DragonOS: LTE IMSI Sniffing using the LTE Sniffer Tool and an Ettus X310 SDR

DragonOS creator Aaron recently uploaded a video on YouTube showing how to capture IMSI data from an LTE-enabled phone by using the open-source LTE sniffer tool and Ettus X310 software-defined radio.

In the video, Aaron uses a simulated environment involving a Signal SDR Pro to simulate the LTE cell phone, a B205 Mini operating as the eNodeB (base station), and an Ettus X310 SDR for the actual LTE sniffing. The SRSRAN software running on DragonOS is used to simulate the LTE network environment.

Aaron goes on to show how the LTE sniffer software passively decodes the physical downlink control channels and captures IMSI numbers from user cell phones.

An IMSI is a unique identifier associated with a cell phone user's SIM card. IMSI sniffing cannot be used to listen to or decode voice, text, or data as they are all encrypted. However, bad actors can use IMSI sniffing to track the movement of devices/people.

DragonOS Noble Sniff + Passively Capture LTE IMSI (x310, b205mini, SignalSDR Pro)

DragonOS: Setting up AISMon with WINE and Virtual Audio Sink for HackRF and RTL-SDR

Over on his YouTube channel Aaron, creator of the DragonOS image (a Linux image with many built-in SDR compatible programs) has uploaded a new video showing how it is possible to run the Windows only AISMon software on Linux, using WINE. WINE is a Windows emulator for Linux which allows users to run some Windows software on Linux.

In the video Aaron shows how to set up WINE on the DragonOS Linux image, how to run AISMon with it, and how to set up the Virtual Audio Cable sink which is required to pass the audio from SDR++ to AISMon. He also shows how he tests his setup using the AIS-Simulator software with a HackRF, and an RTL-SDR for receiving.

DragonOS FocalX Setup AISMon with WINE + Virtual Audio Sink (HackRF, RTLSDR, SDR++, AIS-Simulator)

YouTube Video Series on Iridium Satellite Decoding with an Airspy, RTL-SDR Blog Patch Antenna and DragonOS

Over on his YouTube channel, Rob VK8FOES has started a new video series about Iridium Satellite Decoding. Iridium is a constellation of low-earth orbiting satellites that provide voice and data services. Iridium was first decoded with low cost hardware by security researchers back in 2016 as mentioned in this previous post. Being unencrypted it is possible to intercept private text and voice communications.

Rob's video is part of a series, and so far only part one has been uploaded. The first video outlines the hardware and software requirements for Iridium decoding and demonstrates the gr-iridium software. An Airspy and RTL-SDR Blog Patch Antenna are used for the hardware, and the software runs on DragonOS.

Rob writes that in part two he will demonstrate the use of iridium-toolkit, which can be used to extract data and recordings from the Iridium data provided from gr-iridium.

Be sure to subscribe to his YouTube channel so that you are notified when part two is released.

Iridium Satellite Decoding Part 1: The Tutorial That Goes Over Your Head, Literally!

DragonOS: Tracking ADS-B, UAT, ACARS, VDL2 with TAR1090 and a KrakenSDR

Aaron who created and maintains the DragonOS SDR Linux distribution has recently uploaded a new video where he uses a KrakenSDR to simultaneously receive and decode multiple aircraft tracking, telemetry/messaging signals including ADS-B, UAT, ACARS and VDL2.

In the video Aaron uses his WarDragon which is a Mini PC that comes preinstalled with DragonOS. It is currently available on his website for $220, or $550 including a carry case, and Airspy R2.

The video shows how to setup all the software including FlightView GUI which is a graphical user interface that allows users to manage and configure various Docker based aircraft-related services including tar1090, readsb and acarshub.

WarDragon ADS-B, UAT, ACARS, and VDL2 w/ TAR1090 + ACARS Hub (KrakenSDR, Defli optional)

DragonOS: Running GNSS-SDR and Obtaining a GPS Position with an RTL-SDR and Patch Antenna

Over on his YouTube channel Aaron who created and maintains the DragonOS SDR Linux distribution, has uploaded a video demonstrating how to use the GNSS-SDR software together with an RTL-SDR and patch antenna to obtain a live GPS position.

Previously we had only seen a Windows method involving GNSS-SDRLIB and RTKNAVI working as GNSS-SDR on Linux seemed impossible to get running. However, Aaron managed to find a working RTL-SDR configuration for GNSS-SDR which made it come alive. This is great as now GNSS-SDR should be able to run on a portable single board computer like a Raspberry Pi.

The video is a tutorial that shows how to install all the required dependencies, how to compile GNSS-SDR, how to configure it for an RTL-SDR, and how to use it with our RTL-SDR Blog L-band patch antenna.

DragonOS FocalX Setup GNSS-SDR and Obtain GPS Position w/ RTLSDR (Patch Antenna, WarDragon)

DragonOS: Decoding Train Telemetry with SoftEOT and RTL-SDR

Over on his YouTube channel Aaron who created and maintains the DragonOS SDR Linux distribution, has uploaded a video demonstrating how to use an RTL-SDR and SoftEOT/PyEOT to decode North American wireless train telemetry.

HOT (Head of Train), EOT (End of Train) and DPU (Distributed Power Unit) telemetry is sent from various parts of a train and contains information about things like voltages, brake line pressure and to monitor for accidental separation of the train.

In his video Aaron uses his DragonOS Linux distribution, SDR++ with an RTL-SDR Blog V4 dongle and the SoftEOT and SoftDPU decoders. SoftEOT and SoftDPU are both Windows programs, however Aaron shows how to use WINE to run them in Windows. Later he shows how to use an alterative decoder called PyEOT which is based on GNU Radio.

DragonOS FocalX Decoding Train Telemetry w/ SoftEOT/PyEOT (RTLSDR V4, WINE AppImage, GR 3.10)

DragonOS: KrakenSDR and DF Aggregator Connected via a 1km WiFi Link

DragonOS is a ready to use Ubuntu Linux image that comes preinstalled with multiple SDR software packages including a tool called DF Aggregator, which can be used for radio direction finding with a device like our KrakenSDR.

In his latest video, Aaron, creator of DragonOS tests out a long range one kilometer WiFi link between a KrakenSDR, and his base station running DF Aggregator. The WiFi link is achieved by using a ALFA Network 802.11ah (900 MHz US) adapter. The remote KrakenSDR is running on a 'DragonDeck', which is a SteamDeck gaming console with DragonOS installed on it.

In the video Aaron shows that when he transmits with his handheld radio, the remote KrakenSDR is able to provide an accurate bearing towards the transmitter. At the end Aaron also briefly tests out automatic speech transcribing via WhisperCPP.

Aarons tests were run together with @VibesGoon who shows a few great pictures of his KrakenSDR setup on his Twitter Feed.

DragonOS FocalX 1km Remote Connect to KrakenSDR/SDR4Space w/ 802.11ah (hackRF, Halow-U, SteamDeck)

Aaron also shows another picture on his Twitter feed, which also shows the SteamDeck.

Real Time Speech to Text from Radio Speech via DragonOS, SDR4Space, Mosquitto and WhisperCPP

Real time high quality speech to text is now possible with OpenAI's WhisperCPP, a high-performance and open source automatic speech recognition model.

In his latest video on YouTube, Aaron demonstrates how to use his latest DragonOS image to transcribe audio from a radio voice channel that is received with an RTL-SDR. He makes use of SDR4Space as the command line receiver, WhisperCPP as the AI transcriber and Mosquitto for monitoring WhisperCPP outputs and displaying the text to the terminal.

Here's a short video showing exactly how to setup and run SDR4space in such a way that real time IQ captures are demodulated and feed to WhisperCPP (High-performance inference of OpenAI's Whisper automatic speech recognition (ASR) model) for transcribing.

The latest DragonOS FocalX R28 comes w/ everything needed to do exactly what I show in this video, to include a sample tiny model.

You'll noticed in the video that jobs are placed in a queue for continued captures and results are also sent over to Mosquitto MQTT where a client can see messages as they are created.

I chose to use an RTLSDR v3 dongle for the capture, but it's possible to configure SDR4space to use a variety of soapy supported SDRs.

In his first video Aaron shows how to get setup with the system on DragonOS. Shortly after uploading his first tutorial, Aaron noticed that recompiling WhisperCPP on the local system yielded a significant decrease in the processing time of the AI. After recompiling locally the transcribing then became near real time. In the second video Aaron briefly demonstrates the real time transcription. 

DragonOS FocalX Capture and Transcribe IQ w/ SDR4space/WhisperCPP/Mosquitto (RTLSDR, OpenAI)

DragonOS FocalX Captured IQ to Text Faster w/ SDR4space/WhisperCPP/Mosquitto (RTLSDR)

In the past we posted a similar project that was based on the Amazon Transcribe cloud service. However WhisperCPP runs on a local machine, is open source and seems to be at least as good as Amazon Transcribe. So this appears to be a significant leap in transcribing ability and we could see it being used to automatically create text logs and alerts based on various radio channels.