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gaystclair53-blog · 7 years ago

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thetechnologyguy-blog1 · 7 years ago

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How to hack any car with this tool

First we will see the topics that will be covered by the information security experts in this test / course of auto hacking: Configuration of virtual environments for tests, Sniffing CAN Traffic, Analyzing CAN Traffic, Inverse Engineering CAN IDs, Denial of service attacks, Reproduction / Traffic injection, Coding your own tools CAN Socket in python, Attacks directed against the components of your car and Transitioning this to attack a real car with hardware.

Before going into specific details of vehicle hacking, we will explain what CAN is; is to start your laboratory. In this occasion we are going to run a simple simulated CAN Bus network that controls several features of your simulated car. Experts always tell us that it is better to learn by doing than sitting down and saying a lot of network terms.

For this project you are not expected to buy too much hardware and jack in your real car immediately. Instead, there are options that can start hacking cars following this tutorial.

To begin with, information security researchers say you need to configure yourself with an Ubuntu VMware installation and load it. Optionally, you could also use VM Kali Linux, however, you may have copy problems and it is believed that Kayak was giving installation problems. It is also known that Kali works well with the virtual OpenGarages car.

Install PreReq libraries: Once loaded, you will install the CAN utilities and prerequisite libraries. This is really easy to do with the following Apt-get commands:

sudo apt-get update

sudo apt-get install libsdl2-dev libsdl2-image-dev can-utils

Then we will deploy the ICSimulator repository:

git clone https://github.com/zombieCraig/ICSim.git

Start the simulator: now we can start the simulator by changing the directories to the downloaded repository and executing the following 2 commands, which will configure a virtual CAN interface and a simulator GUI cluster:

Run the configuration script to get the vcan0 interface:

root @ kali: ~ / ICSim # ./setup_vcan.sh

root @ kali: ~ / ICSim # ./icsim vcan0

In a new terminal tab, open the simulator controller with the following command:

root @ kali: ~ / ICSim #. / controls vcan0

Professionals comment that the controller should be the GUI screen in focus to send keyboard commands to the simulator.

To use the simulator; experts in information security tell us that the simulator has a speedometer with turn signals to the right and left, doors, etc. There is a list of commands to control the simulator when the control panel is focused.

The up and down keys control the speedometer of the meter groups

Left and right keys Controls the flashing lights

Shift right + X, A or B open doors

Left shift + X, A or closed doors

Experiment with some of the previous commands, for example, Shift + X, you can see that the interface changes.

Now you have your own car to hack. It is important to note that in the configuration commands above we use a VCan0 interface. Run Ifconfig and you will see that it has a new network interface that speaks to the CAN network through VCan0.

ficti0n @ ubuntu: ~ / Desktop / ICSim $ ifconfig vcan0

vcan0 Link encap: UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-

UP RUNNING NOARP MTU: 16 Metric: 1

RX packages: 558904 errors: 0 discarded: 0 overshoots: 0 frame: 0

TX packages: 558904 errors: 0 discarded: 0 overshoots: 0 operator: 0

Collisions: 0 txqueuelen: 1

Bytes RX: 3663935 (3.6 MB) Bytes TX: 3663935 (3.6 MB)

Researchers comment that the networks of cars are executed in a variety of more common protocols that are CAN. You can think of a CAN Bus as a network center where everyone can see the traffic of the whole world. This is true up to a point, although you may not see all the traffic if you are not connected to that particular bus. You can think of a type of CAN traffic similar to the UDP in which it is sent and forgotten, the main difference is that the parts of the CAN bus network do not really have addresses and everything is executed with IDs and arbitration priorities.

Now, let’s check if you can see our CAN traffic from our virtual car through the CanDump utility, which you installed as part of the previous CanUtils package. Using the following command in the vcan0 interface that our simulator uses, you can see a traffic sequence:

ficti0n @ ubuntu: ~ / Desktop / ICSim $ candump vcan0

Now we can see CAN frames, and if we perform actions on the vehicle, we will see changes in the data values in the CanDump output. However, experts say that this can happen very quickly and we may not be able to see if we have unlocked the door of our simulators. This happens because things change constantly in the idle state of cars.

To capture and play CAN actions; an option would be to perform an action and reproduce it, you should see that the actions happen again in the repetition if the traffic for the action that we recorded is in the same bus network in which our device is connected. There are a lot of networks inside a car and our network tap is not guaranteed, an OBD2 port connector is connected to the same network as the door we open.

Another useful tool included with the CanUtils package is CanPlayer to reproduce traffic, say information security experts. If the functionality we are trying to capture is in the same Bus as the adapter connected to the car, or in this case our Virtual CAN interface, we can use CanDump to save the traffic in a file. Then we use CanPlayer to reproduce the traffic on the network. An example, run CanDump, opens a door and then replays the functionality with CanPlayer.

Lab 1 steps:

Run CanDump

Right Shift + X to open a door

Cancel CanDump (ctrl + c)

Left Shift + X to close the door

Run can the player with the dump saved and will replay the traffic and open the door

Record of the opening of the door: (-l for the record)

ficti0n @ ubuntu: ~ / Desktop / ICSim $ candump -l vcan0

Playback of the CanDump file: (use the file created by your Can dump)

ficti0n @ ubuntu: ~ / Desktop / ICSim $ canplayer -I candump-2018-04-06_154441.log

At this point you should see that your door is open again. CAN networks are not like TCP / IP, they are more like UDP in that you send your request and do not expect a response. Then, it is lost and you have to send again. It is likely that you were sending something with higher priority on the network at the time of its reproduction and your traffic was overshadowed by it.

Interacting with Can Bus and Reversing Traffic; this is good, but, CanDump is not very useful for this, it moves quickly so we can learn a lot from. Instead, we can use CanSniffer with colored output to show us the bytes inside the packets that change.

To start CanSniffer execute the following:

ficti0n @ ubuntu: ~ / Desktop / ICSim $ cansniffer -c vcan0

Now you will see Time, ID and Data. The most important part for our use is the ID and Data fields.

The frame ID is associated with the device in the network that is made by the box that is sent. Identification also determines the priority of the framework in the network. The smaller the CAN-ID number, the higher priority it will have on the network and the more likely it will be to handle it first. The data field is the information that is sent to change some parameter, such as unlocking a door or updating the output. The values in red are the values that are changing during the inactive state in which you are currently.

Determine which ID and Byte control the accelerator; with the sniff window of the terminal open, put the simulator and controller in the foreground, with the controller as the window in which you clicked and selected. Pay attention to the CanSniffer output while pressing the UP ARROW and look for a value that is white but is now red and increases in value as the accelerator goes up, say information security researchers.

Select values with filters; to select the accelerator value, click on the terminal window and press -000000 followed by the Enter key that will erase all the values that are displaced. Then press +244 followed by the Enter key, which will add the accelerator identification again. Now you can click on the controller again and increase the speed with the up arrow button without all the noise obscuring your view. Instead, as shown below, you will only have ID 244 in your result.

To retrieve the IDs again, click on the terminal window and enter +000000 followed by the Enter key. Now you should see the entire exit as before. Essentially 000000 means to include everything. When you put a minus sign in front of it, it denies everything and clears your terminal window by filtering all the values.

Determine the Blinker ID; discover identification for the flashing lights. If you press the left or right arrow with the selected control window, you will see a completely new ID appear in the list, ID 188 shown in the following image, which is associated with the flashing light.

This ID was not mentioned, since it was not used in data output until you pressed the flashing light control. Let’s drop this value by pressing -000000 followed by +188. As in the example of the accelerator, your terminal should only show ID 188; initially it will be shown with values of 00 bytes.

Pressing the left and right flashing light, you can see the first change of Byte from 00 to 01 or 02. If none of them is pressed, it will be 00. The identification will remain visible as 00 until the time expires and disappears from the list when it is not active.

It’s time to do some protocol inversion. This lab will give you an idea of how to reverse all the functionality of the car and associate each action with the correct ID and BYTE. In this way, you can create a map of the desired functionality changes. We have already done some steps on how to determine which byte and ID are associated with an action. Now it’s time to map with all the remaining functions before moving on to attack individual components.

Attacking the functionality, with all the assigned functionality, we can now address several devices on the network directly without interacting with the GUI of the controllers. Perhaps we entered the car through the OnStar cellular connection or the central console units of the BLE connection that was connected to the CAN network in some way.

After an exploit we have direct access to the CAN network and we would like to take actions. Or maybe you have installed a wireless device in an OBD2 port under the board.

Using data from the CAN network reversal lab, we can call these actions directly with the appropriate CAN-ID and byte. Since we are far from the goal, we cannot simply reach out and grab the steering wheel or squeeze the accelerator; instead, we will send your CAN structure to make the change.

One way we can do this is through the CanSend utility, say information security researchers. Take the information from our laboratory above and make the left turn signal flash with the next ID 188 for the turn signal by changing the first byte to 01, which indicates that the left signal is pressed. CanSend uses the ID # Data format.

ficti0n @ ubuntu: ~ / Desktop / ICSim $ cansend vcan0 188 # 01000000

Now you should have noticed that the left signal flashed. If this did not happen, try again or make sure you have used the correct ID and changed the correct byte. This will do the same with the accelerator and try to adjust the speed to something with ID 244 that we determined was the accelerator.

ficti0n @ ubuntu: ~ / Desktop / ICSim $ cansend vcan0 244 # 00000011F6

Nothing will happen because it is so fast that the needle will not jump to that value. So, try repeating this over and over again with a bash loop.

ficti0n @ ubuntu: ~ / Desktop / ICSim $ while true; cansend vcan0 244 # 00000011F6

Now you may notice that the needle jumps back and forth a little. The needle bounces back and forth because normal CAN traffic is sent telling the car that it is actually set to 00 between its frames, which means it is 30 mph. Now the speed of the car has changed and the flashing light has been turned on without using the normal turn signal controls.

One way to handle this problem is to monitor the CAN network and when you see a sent ID, it will automatically send the corresponding ID with a different value. At this point we will try to modify the speed output by monitoring the changes. Next, we simply run CanDump and analyze the ID 244 in the record output, which is the value of the accelerator that tells the car the speed. When a device in the car reports ID 244 and its value, we will immediately send our own value saying that the speed is 30 mph with the value 11, said information securityresearchers.

ficti0n @ ubuntu: ~ / Desktop / ICSim $ candump vcan0 | grep “244” | while reading the line; cansend vcan0 244 # 00000011F6

With this operation after a few seconds you will see that the speed is adjusted to around 30 MPH once you capture a legitimate CAN-ID 244 network traffic and send your own value immediately afterwards.

While the previous command is still working, click on the controller window and start holding the arrow up with the controller in focus. After waiting a few seconds, when the speed exceeds 30 MPH you will see the needle fighting for the highest real value and adjust back to 30 MPH as your command continues to send its value as a replacement for the actual speed.

This is a way to monitor the network and react in a very crude way to what you see. Maybe someone stole your car and you want to control if there is an open door and if they try to open the door, it immediately locks them up.

#techblog #tecnologia #technology #tech #tech news #noticias tecnologicas

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nationaloversprayremoval · 8 years ago

Link

via Twitter

#IFTTT #Twitter

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numberelevenmink-blog · 8 years ago

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I just discovered something exciting recently and want to share with you: it's now possible to use IFTTT with OpenSprinkler and OpenGarage; and because IFTTT

I just discovered something exciting recently and want to share with you: it’s now possible to use IFTTT with OpenSprinkler and OpenGarage; and because IFTTT

http://bit.ly/2oxzD9N

View On WordPress

#“Alexa #Open Sprinkler Zone 1” — How to Use IFTTT with ...

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t8ph · 8 years ago

Link

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opengaragemarseille · 8 years ago

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NATURE, NATUREL, SAVOIR VIVRE, ON Y VA, ON SE LAISSE FAIRE...

Vent de Bohème vous propose l’assise, Stéphanie Minervini met les petits plats dans les grands...à vous de déguster...

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blogmysticbananacollector-blog · 8 years ago

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Nevertheless, a faulty opener process should be perhaps threatening for people and could bring about harm to objects in its pathway of procedure.

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thetechnologyguy-blog1 · 7 years ago

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Cómo hackear cualquier smart-auto con esta herramienta

Primero veremos los temas que serán cubiertos por los expertos en seguridad informática en esta prueba/curso de hackeo de autos: Configuración de entornos virtuales para pruebas, Sniffing CAN Traffic, Analizando CAN Traffic, Reverse Engineering CAN IDs, Ataques de denegación de servicio, Reproducción / inyección de tráfico, Codificando tus propias herramientas CAN Socket en python, Ataques dirigidos contra los componentes de su automóvil y Transicionando esto para atacar un auto real con hardware.

Antes de entrar en detalles específicos de hackeo de vehículos, explicaremos que es CAN; es poner en marcha su laboratorio. En esta ocasión vamos a ejecutar una red CAN Bus simulada simple que controla varias características de su automóvil simulado. Expertos siempre nos dicen que es mejor aprender haciendo que sentarse y decir un montón de términos de red.

Para este proyecto tampoco se espera que compre demasiado hardware y jack en su auto real de inmediato. En cambio, hay opciones que pueden comenzar a hackear coches siguiendo este tutorial.

Para comenzar, los investigadores de seguridad informática dicen que necesitas configúrate con una instalación Ubuntu VMware y cárgalo. De manera opcional, también podría usar VM Kali Linux, sin embargo, puede tener problemas de copia y se cree que Kayak estaba dando problemas de instalación. También es sabido que Kali funciona bien con el auto virtual OpenGarages.

Instalar bibliotecas PreReq: Una vez cargado, vas a instalar las utilidades CAN y las bibliotecas de requisitos previos. Esto es realmente fácil de hacer con los siguientes comandos Apt-get:

sudo apt-get update

sudo apt-get install libsdl2-dev libsdl2-image-dev can-utils

Luego vamos a desplegar el repositorio ICSimulator:

git clone https://github.com/zombieCraig/ICSim.git

Iniciar el simulador: ahora podemos iniciar el simulador cambiando los directorios al repositorio descargado y ejecutando los siguientes 2 comandos, que configurarán una interfaz CAN virtual y un clúster GUI del simulador:

Ejecute la secuencia de comandos de configuración para obtener la interfaz vcan0:

root @ kali: ~ / ICSim # ./setup_vcan.sh

root @ kali: ~ / ICSim # ./icsim vcan0

En una nueva pestaña de terminal abre el controlador de simuladores con el siguiente comando:

root @ kali: ~ / ICSim #. / controls vcan0

Profesionales comentan que el controlador debe ser la pantalla de la GUI en foco para enviar comandos de teclado al simulador.

Para usar el simulador; expertos en seguridad informática nos dicen que el simulador tiene un velocímetro con señales de giro a la derecha e izquierda, puertas, etc. Existe una lista de comandos para controlar el simulador cuando el panel de control está enfocado.

Las teclas arriba y abajo controlan el velocímetro de los grupos de medidores

Teclas izquierda y derecha Controlan las luces intermitentes

Shift derecho + X, A o B puertas abiertas

Shift izquierdo + X, A o puertas cerradas

Experimente con algunos de los comandos anteriores, por ejemplo, Mayúsculas + X, podrá ver que la interfaz cambia.

Ahora tienes tu propio auto para hackear. Es importante notar que en los comandos de configuración de arriba usamos una interfaz VCan0. Ejecute Ifconfig y verá que tiene una nueva interfaz de red que habla a la red CAN a través de VCan0.

ficti0n @ ubuntu: ~ / Desktop / ICSim $ ifconfig vcan0

vcan0 Link encap: UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-

UP RUNNING NOARP MTU: 16 Métrico: 1

Paquetes RX: 558904 errores: 0 descartado: 0 rebasamientos: 0 fotograma: 0

Paquetes TX: 558904 errores: 0 descartado: 0 rebasamientos: 0 operador: 0

colisiones: 0 txqueuelen: 1

Bytes RX: 3663935 (3.6 MB) Bytes TX: 3663935 (3.6 MB)

Investigadores comentan que las redes de autos se ejecutan en una variedad de protocolos más comunes que son CAN. Se puede llegar a pensar en un CAN Bus como un centro de redes donde todos pueden ver el tráfico de todo el mundo. Esto es cierto hasta cierto punto, aunque es posible que no vea todo el tráfico si no está conectado a ese Bus en particular. Puede pensar en un tipo de tráfico CAN similar al UDP en el que se envía y se olvida, la principal diferencia es que las partes de la red de bus CAN en realidad no tienen direcciones y todo se ejecuta con las ID y prioridades de arbitraje.

Ahora, revisemos si se puede ver nuestro tráfico CAN desde nuestro automóvil virtual a través de la utilidad CanDump, que instaló como parte del paquete CanUtils anterior. Usando el siguiente comando en la interfaz vcan0 que utiliza nuestro simulador, puede ver una secuencia de tráfico:

ficti0n @ ubuntu: ~ / Escritorio / ICSim $ candump vcan0

Ahora podremos ver marcos CAN, y si realizamos acciones en el vehículo, veremos cambios en los valores de datos en la salida CanDump. Sin embargo, los expertos dicen que esto puede suceder muy rápido y es posible que no podamos ver si hemos desbloqueado la puerta de nuestros simuladores. Esto ocurre debido a que las cosas cambian constantemente en el estado inactivo de los automóviles.

Para capturar y reproducir acciones CAN; una opción sería realizar una acción y reproducirla, debería ver que las acciones vuelven a ocurrir en la repetición si el tráfico para la acción que grabamos está en la misma red de bus en la que está conectado nuestro dispositivo. Hay una gran cantidad de redes dentro de un automóvil y no está garantizado nuestro grifo de red, un conector de puerto OBD2 está conectado a la misma red que la puerta que abrimos.

Otra herramienta útil incluida con el paquete CanUtils es CanPlayer para reproducir el tráfico, dicen los expertos en seguridad informática. Si la funcionalidad que estamos tratando de capturar está en el mismo Bus que el adaptador conectado al automóvil, o en este caso nuestra interfaz CAN Virtual, podemos usar CanDump para guardar el tráfico en un archivo. Luego usamos CanPlayer para reproducir el tráfico en la red. Un ejemplo, ejecute CanDump, abra una puerta y luego vuelva a reproducir la funcionalidad con CanPlayer.

Lab 1 pasos:

Ejecutar CanDump

Shift derecho + X para abrir una puerta

Cancelar CanDump (ctrl + c)

Shift izquierdo + X para cerrar la puerta

Ejecutar puede el jugador con el volcado guardado y volverá a reproducir el tráfico y abrirá la puerta

Grabación de la apertura de la puerta: (-l para el registro)

ficti0n @ ubuntu: ~ / Escritorio / ICSim $ candump -l vcan0

Reproducción del archivo CanDump: (use el archivo creado por su volcado de Can)

ficti0n @ ubuntu: ~ / Desktop / ICSim $ canplayer -I candump-2018-04-06_154441.log

En este punto se debería ver que tu puerta está abierta de nuevo. Las redes CAN no son como TCP / IP, se parecen más a UDP en que envías tu solicitud y no espera una respuesta. Entonces, se pierde y tienes que volver a enviar. Es probable que estaba enviando algo con mayor prioridad en la red en el momento de su reproducción y su tráfico se vio eclipsado por él.

Interactuando con Can Bus y Reversing Traffic; esto es bueno, pero, CanDump no es muy útil para esto, se desplaza rápidamente para que podamos aprender mucho de. En cambio, podemos usar CanSniffer con salida coloreada para mostrarnos los bytes dentro de los paquetes que cambian.

Para iniciar puede sniffer ejecutar lo siguiente:

ficti0n @ ubuntu: ~ / Escritorio / ICSim $ cansniffer -c vcan0

Ahora vera, Tiempo, ID y Datos. La parte más importante para nuestro uso son los campos ID y Datos.

El ID de marco está asociado con el dispositivo en la red que se efectúa mediante el cuadro que se envía. La identificación también determina la prioridad del marco en la red. Cuanto menor sea el número de CAN-ID, mayor prioridad tendrá en la red y más probable será que se maneje primero. El campo de datos es la información que se envía para cambiar algún parámetro, como desbloquear una puerta o actualizar la salida. Los valores en rojo son los valores que están cambiando durante el estado inactivo en el que se encuentra actualmente.

Determine qué ID y Byte controlan el acelerador; con la ventana de olfateo del terminal abierta, ponga el simulador y el controlador en primer plano, con el controlador como la ventana en la que ha hecho clic y seleccionado. Preste atención a la salida CanSniffer mientras presiona la FLECHA HACIA ARRIBA y busque un valor que sea blanco pero que ahora sea rojo y aumente de valor a medida que el acelerador suba, dicen los investigadores de seguridad informática.

Seleccionar valores con filtros; para seleccionar el valor del acelerador, haga clic en la ventana del terminal y presione -000000 seguido de la tecla Intro que borrará todos los valores que se desplazan. A continuación, presione +244 seguido de la tecla Entrar, que volverá a agregar la identificación del acelerador. Ahora puede hacer clic en el controlador nuevamente y aumentar la velocidad con el botón de flecha hacia arriba sin que todo el ruido opaque su vista. En cambio, como se muestra a continuación, solo tendrá ID 244 en su resultado.

Para recuperar los ID otra vez, haga clic en la ventana del terminal e ingrese +000000 seguido de la tecla Intro. Ahora debería ver toda la salida como antes. Esencialmente 000000 significa incluir todo. Cuando pones un signo menos frente a él, lo niega todo y borra tu ventana de terminal filtrando todos los valores.

Determine la ID de Blinker, descubramos otra identificación para las luces intermitentes. Si se presiona la flecha izquierda o derecha con la ventana de controles seleccionada, podrá ver que aparece una ID completamente nueva en la lista, ID 188 que se muestra en la imagen siguiente, que está asociada con la luz intermitente.

Esta ID no se mencionó, ya que no se usaba en la salida de datos hasta que presionó el control de la luz intermitente. Vamos a soltar este valor presionando -000000 seguido de +188. Como en el ejemplo del acelerador, su terminal solo debe mostrar la ID 188, inicialmente se mostrará con valores de 00 bytes.

Al presionar la luz intermitente izquierda y derecha, se podrá ver el primer cambio de Byte de 00 a 01 o 02. Si no se presiona ninguno de ellos, será 00. La identificación permanecerá visible como 00 hasta que agote el tiempo y desaparezca de la lista cuando no esté activo.

Es hora de hacer algo de inversión de protocolo. Esta práctica de laboratorio le dará una idea de cómo invertir toda la funcionalidad del automóvil y asociar cada acción con la ID y el BYTE correctos. De esta forma, se puede crear un mapa de los cambios de funcionalidad deseados. Ya hemos realizado algunos pasos sobre cómo determinar qué byte e ID están asociados con una acción. Ahora es el momento de mapear con todas las funciones restantes antes de pasar a atacar componentes individuales.

Atacar la funcionalidad, con toda la funcionalidad asignada, ahora podemos dirigirnos a varios dispositivos en la red directamente sin interactuar con la GUI de los controladores. Tal vez entramos en el automóvil a través de la conexión celular OnStar o de las unidades de la consola central de la conexión BLE que estaba conectada a la red CAN de alguna manera.

Después de un exploit tenemos acceso directo a la red CAN y nos gustaría realizar acciones. O tal vez haya instalado un dispositivo inalámbrico en un puerto OBD2 debajo del tablero.

Usando los datos del laboratorio de reversión de red CAN, podemos llamar estas acciones directamente con el CAN-ID y el byte apropiados. Ya que estamos alejados del objetivo, no podemos simplemente extender la mano y agarrar el volante o apretar el acelerador; en su lugar, enviaremos su estructura CAN para realizar el cambio.

Una forma en que podemos hacer esto es a través de la utilidad CanSend, comentan investigadores de seguridad informática. Tomemos la información de nuestro laboratorio de arriba y hagamos que la señal de giro a la izquierda parpadee con la siguiente ID 188 para la señal de giro cambiando el primer byte a 01, lo que indica que se presiona la señal izquierda. CanSend usa el formato ID # Data.

ficti0n @ ubuntu: ~ / Desktop / ICSim $ cansend vcan0 188 # 01000000

Ahora se debería haber notado que la señal izquierda brilló. Si esto no ocurrió, pruébalo nuevamente o asegúrate de haber utilizado la ID correcta y cambiado el byte correcto. Así se hará lo mismo con el acelerador e intentemos ajustar la velocidad a algo con ID 244 que determinamos que era el acelerador.

ficti0n @ ubuntu: ~ / Desktop / ICSim $ cansend vcan0 244 # 00000011F6

No pasara nada porque es tan rápido que la aguja no va a saltar a ese valor. Así que, intente repetir esto una y otra vez con un bucle de bash.

ficti0n @ ubuntu: ~ / Desktop / ICSim $ while true; cansend vcan0 244 # 00000011F6

Ahora puede notar que la aguja salta hacia adelante y hacia atrás un poco. La aguja rebota hacia adelante y hacia atrás porque se envía el tráfico normal de la CAN diciéndole al auto que en realidad está ajustado a 00 entre sus marcos, lo que significa que es 30 mph. Ahora ha cambiado la velocidad que ve el automóvil y ha encendido la luz intermitente sin usar los controles normales del intermitente.

Una forma de manejar este problema es monitorear la red CAN y cuando ve una ID enviada, automáticamente enviará la ID correspondiente con un valor diferente. En este punto vamos a intentar modificar la salida de velocidad monitoreando los cambios. A continuación, simplemente ejecutamos CanDump y analizamos el ID 244 en la salida de registro, que es el valor del acelerador que le dice al auto la velocidad. Cuando un dispositivo en el automóvil informe la ID 244 y su valor, inmediatamente volveremos a enviar nuestro propio valor diciendo que la velocidad es de 30 mph con el valor 11, comentaron investigadores de seguridad informática.

ficti0n @ ubuntu: ~ / Escritorio / ICSim $ candump vcan0 | grep “244” | mientras lee la línea; cansend vcan0 244 # 00000011F6

Con este funcionamiento después de unos segundos verá que la velocidad se ajusta a alrededor de 30 MPH una vez que captura un CAN-ID 244 legítimo del tráfico de la red y envía su propio valor inmediatamente después.

Mientras el comando anterior todavía está funcionando haga clic en la ventana del controlador y comience a mantener presionada la flecha hacia arriba con el controlador enfocado. Después de esperar unos segundos, cuando la velocidad supera los 30 MPH verá la aguja peleando por el valor real más alto y ajuste de nuevo a 30 MPH a medida que su comando sigue enviando su valor como reemplazo de la velocidad real.

Esta es una manera de monitorear la red y reaccionar de una manera muy cruda a lo que ves. Tal vez alguien robó tu auto y quieres controlar si hay una puerta abierta y si tratan de abrir la puerta, inmediatamente los encierra.

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