I'm quite a beginner to Wireshark and I got problem using it, I searched the wireshark wiki but seems no promising results. Hopefully I can get some help here.
I am trying to analyze the network traffic between LG smart watch and Android phone, which all go through bluetooth channel. Now I have got the network traffic log file and I can view it by running wireshark <log_file_name>. Problem is how can I extract and retrieve data, or even just remove the bluetooth header and get the original network layer packet, because I can parse the IP layer packet but bluetooth packet is not what I want and what I understand.
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I'm currently building a project to identify IoT devices on a home network and was wondering if anyone has any idea where I could get my hands on some sample pcaps that include ZigBee traffic on them. I don't currently have the ability to order or have the hardware for sniffing zigBee network traffic and am in a bit of a time crunch so if anyone could help me then I would be very appreciative.
I'm going to interpret your question as "How can I find a packet capture with $protocol". I created a searchable pcap database that you can find protocols with, including ZigBee: https://tshark.dev/search/pcaptable/
To find ZigBee pcaps, search with [zbee in the protocol filter to find pcaps, where
[ indicates a protocol. Without this, you'll search pcap descriptions as well.
zbee is the wireshark display filter family for the ZigBee protocol.
I have trouble decrypting WPA2 WLAN traffic in Wireshark.
I've done research and followed all advises I could possibly find and still cannot decrypt it. There are of course plenty of variables, but I strongly believe I covered all of them, and yet I'm still missing out something.
Basically, all I can view is Probs, Beacons, Null function (No data) and QoS Null function (No data). I connect to the network with my phone and start randomly browsing and can clearly see my traffic is going in Wireshark, but it only Null function (No data) packets.
I've made sure I added [password]:[ssid] to 802.11 and enabled decryption. Always have long streams and full EAPOLs when capturing the traffic and tried on three different wifi cards (Alfa, TP-link & Intel). I have most up to Kali distribution and latest Wireshark version, and tried on someone else pcaps and Wireshark decrypted it successfully.
The only thing I can think of causing this is the driver.
I have been reading answers on stackoverflow for a while now and this is the first time I actually am required to ask a question:
I have a small sensing device (literally a black box) which is used during sporting activities and is tracking acceleration and GPS data (not necessarily with the same frequency, according to a patent from the vendor). After a session, one can connect the device to a smartphone and import the session data to view statistics.
Now I am trying to acquire the raw data to apply some own statistics onto it.
I know that the device connects to my phone via Bluetooth. So I activated the Bluetooth HCI snoop log following this tutorial:
http://www.fte.com/WebHelp/BPA600/Content/Documentation/WhitePapers/BPA600/Encryption/GettingAndroidLinkKey/RetrievingHCIlog.htm
I can then transfer the files by renaming them into .cap files on the PC and load them into wireshark. This is where it gets tricky:
I have found out, that the first connection is established via Bluetooth low energy. When the connection is established and the user has selected to download a session from the device via the app, the connection switches to a normal Bluetooth connection.
I know that the device contains a GPS and a 9-axis accelerometer including a Gyro.
Apparently the Bluetooth protocol to transfer data is the SPP protocol (https://en.wikipedia.org/wiki/List_of_Bluetooth_profiles#Serial_Port_Profile_.28SPP.29), used to simulate a RS-232 connection.
I have attached a screenshot from wireshark showing a reassembled data packet. I do not know what it contains and the rendering from Wireshark does not make any sense to me. The frame content is displayed in the bottom most tab. The left is the raw HEX transmission, the right shows the rendered version. It neither looks like any GPS sentence (http://www.gpsinformation.org/dale/nmea.htm), nor like any accelerometer data:
The general setting is an encryption-less connection, but at some stage the host and controller try to switch to an encryption, but this never gets transmitted to the peripheral slave (as far as I can see). I am wondering how to make sense of this data, whether there is a way for me to find out whether an encryption is activated and if it is, is it logged and can I retrieve the key from this log?
Can anyone help me to figure out the data here or tell me where I can find some hints about whether it is encrypted or not?
Edit:
I have added a screenshot from the first SPP transmission packet. The packet in question and the payload are marked in black. It seems to contain some information about device and other configuration settings or initial values for the sensors at the beginning. I suspect the app and the device to have settled on a proprietary scrambling or encrypting, since there are readable values at the beginning, but not after that black box marked in the image. My suspicion is, that bluetooth encryption is not being used at all and I therefore stand no chance of decrypting the information at all? Can someone confirm or deny this suspicion?
where I can find some hints about whether it is encrypted or not?
What you see in Wireshark is the HCI interface (commands and events) between Host and Controller. Since encryption is done in the controller (see Bluetooth Core spec. Vol. 1 Part A Section 5.4.3), what you see is unencrypted data.
Can anyone help me to figure out the data here
It's hard to understand from your single screenshot. I suggest you take a look at the RFCOMM specification, Figure 6.1 in paricular:
In the Information field you should find your data.
I am developing a logic core to perform data transfer between a FPGA and a PC over ethernet, using a LAN8710 PHY on my FPGA board.
I've achieved to transfer some UDP data packets from the FPGA to the PC. It's a simple core that complies with the PHY transfer requirements. It builds the UDP package and transfer it to the PC.
To check the reception on the PC, I am using Wireshark and as said above, I receive the packets correctly. I've checked the reception with a simple UDP receiver written by myself.
But, I've noticed that I only receive these packets when Wireshark is running on the PC. I mean, if Wireshark is ON, my application receives the packets too, and the counter of received packets of the following picture increases. (This picture is not mine, just one from the internet)
http://i.stack.imgur.com/wsChT.gif
If I close Wireshark, the PC stops receiving packets and the counter of received packets stops. My application stops receiving too.
Although novice on networking topics, I suspect that this issue is related to PC-side. Seems like Wireshark is "opening/closing" the ethernet communication channel, or something like that. Does anyone knows about this issue?
To build a functional core to transfer data between a PC and the FPGA, I've developed a core to transfer and receive UDP packets. Next step will be ARP implementation (to let the PC identify my FPGA board, as I understand). What protocols are necessary to perform full-duplex data transfer between this 2 devices?
Thank you very much in advance,
migue.
Check whether you are able to get appropriate receive interrupt at ethernet driver level on PC-side for a single transmitted packet by FPGA. If you do not get the receive interrupt, check on the transmit side(FPGA) for appropriate transmit interrupts for packet that is being transmitted. This should mostly help you in cornering the issue.
As far as i know, wireshark is just a packet analyzer/sniffer. However, if wireshark is suspected, one option could be to try with alternate packet sniffer to rule out if any such scenario is happening.
A handy tool for determining problems in network and also for determining the network statistics shall be netstat. netstat -sp udp shall list down the statistics only for UDP. There are many other parameters that can be used with netstat for diagnosis.
After many months I solved it, I post to help someone stucked in the same point.
Finally I figured out that Wireshark uses a tool to access the network link layer of the computer. This tool allows Wireshark to sniff all incoming and outgoing packets at a specified network device. To do this, the first step is to OPEN the network device, and that's why my program only worked if Wireshark was open.
Regards.
I have a small home network that I would like to analyze and capture the traffic on. What are my options for doing this? Ultimately, I would like to use a packet capture library, such as libpcap, to sniff the network in real-time as my router receives packets. I'm mainly interested in HTTP traffic. Thus far, when I run my program, I only seem to be able to see packets sourced or destined to my machine. Is there a way that I may inspect any traffic that travels through my wireless modem/router?
From the research I've done, it seems that the only way this is possible is through ARP poisoning or using a CISCO router that features Embedded Packet Capture.
Has anyone tried either of these and how successful were you? Are these my only options or is there something I may have overlooked?
Hi :) I think ARP poisoning and so on is not so easy to drop in.. ;) but you could start by trying one of the most famous network packets analyzer: Wireshark. Networking is very far to be easy.. :P but Wireshark will help you a lot and, btw, supports also libcap. Hope that helps :)