Wireshark is a graphical packet capture and analyser open-source software. It can be used for a variety of network communication analysis tasks like protocol development and troubleshooting. It shows packets on the IP level.

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20
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2answers
23k views

Decrypting TLS in Wireshark when using DHE_RSA ciphersuites

How can I decrypt TLS messages when an ephemeral Diffie-Hellman ciphersuite is used? I am able to expose the premaster secret and master secret from the SSL Client. Using that, how to decrypt the ...
18
votes
1answer
392 views

How to demo Skype-decryption using FOSS tools?

I'm preparing a presentation on Skype networking. And I'd like to demo decryption. I found a good approach to decrypting the TLS packets captured with WireShark in this blog post: Rob Andrews, ...
16
votes
4answers
6k views

Can someone using Wireshark obtain the full URL if my program uses HTTPS?

While perusing the contents of pcap files I've noticed some URLs appear to be visible despite being HTTPS. These mainly occur inside payloads that contain cert URLs too, but I also see HTTPS URLs ...
14
votes
5answers
9k views

Why can't I decrypt SSL traffic with the client's private key only?

I have found that I can decrypt SSL traffic in Wireshark with the server's private key. Why isn't the client's private key enough to decrypt SSL traffic?
12
votes
5answers
34k views

How to get private key used to decrypt HTTPS traffic sent and received from my own browser with wireshark

I am working with a website that sends API requests. I would like to write a client to make the requests myself, but in order to do so I would need to first see the request payloads. However, the ...
12
votes
1answer
2k views

How to study the packets sent by a keylogger

One of my friends runescape account got hacked through key-logger. He downloaded a runescape gold generator from a file sharing site and tried to use it. I have a strong doubt that it is a key-logger. ...
12
votes
2answers
146 views

Is my Windows phone protected from attacks that reveal list of ssids it knows about?

My goal is to see the SSIDs requested by mobile devices in my home. For example, my Windows phone knows about SSIDs called "coffee_shop", "planet_fitness" and "library". I have my phone set to "...
11
votes
4answers
4k views

Is my network being sniffed?

Is there any way to find out if someone who is connected to my network is sniffing packets? There is a way with nmap if his card is in promiscuous mode but what if it is passive?
10
votes
1answer
213 views

Firefox trying to connect to other computers on the LAN

While running Wireshark trying to troubleshoot some other issues, I noticed several SYN connections to ports 80 and 443 on the workstation I was using. The packets were dropped. These were coming from ...
7
votes
3answers
914 views

How to fuzz proprietary protocol over SSL?

I'm doing vulnerability research on a client/server architecture that uses a custom proprietary protocol sent over SSL (port 443). I need to be able to intercept the traffic, and be able to view it in ...
5
votes
2answers
5k views

Facebook POST request capture

I have been trying to test a sniff on facebook POST request forms using wireshark (filtered HTTP). At login form, I would try login, and then check wireshark and see that no packet was captured. ...
5
votes
2answers
1k views

Private key to PEM

I'm new to security and I'm trying to decode some SSL encrypted communication between my machine and server. I managed to obtain private and public keys as far as I understand private key is this one:...
5
votes
2answers
2k views

Extract pre-master keys from an OpenSSL application

Consider an application using OpenSSL which has a bug. A packet capture of the full SSL session is available, as well as a core dump and debugging symbols for the application and libraries. A RSA ...
5
votes
2answers
412 views

It is safe to share a wireshark file?

I wanted to share a wireshark of my file, because it may help with some problems i'm having but i need to know if it is safe, or if could reveal sensitive data about me, the only IP's i see are my ...
5
votes
3answers
457 views

Watching for applications like WireShark and other eaves dropping on corporate network

Are there ways to monitor and check for network monitoring like WireShark? Or would it just be more ideal to ensure every application uses SSL to ensure no employee or anyone could packet sniff chats/...
5
votes
3answers
842 views

When do Ps Tools send cleartext passwords, and how can I demonstrate this?

The Ps Tools from Mark Russinovich are very handy remote administration utilities. However, they all come with one big caveat. Note that the password is transmitted in clear text to the remote ...
5
votes
2answers
371 views

Decrypting SSL using Wireshark on Linux vs Windows

I'm working on decrypting my own traffic that gets sent through Wireshark and I've been following this guide for reference. I have been using the SSLKEYLOGFILE environment variable and I can get the ...
4
votes
1answer
544 views

Why did this attack use 0.0.0.0 as IP address and why did it work?

Working through this exercise in network forensics, the attacker used a buffer overflow exploit to send commands to the victim's command prompt. The commands open an FTP session and download some ...
4
votes
2answers
4k views

Extract cookies from pcap

Is there any tool to extract cookies from network sniffs generated by tcpdump (.pcap files). I know I can open it in wireshark but it will take a while until I find the domain I am interested into ...
4
votes
1answer
96 views

Are there any statistics about packet filtering to prevent IP spoofing on the internet?

DDoS attacks via spoofed DNS(sec) are daily news for the last few years, but packet filtering should prevent IP spoofing on the internet. I tried (as an exercise) to spoof a packet on my VPS and on ...
4
votes
1answer
4k views

How do I verify exactly which cipher suite is in use for this Remote Desktop session?

You can configure Windows to use only certain cipher suites during things like Remote Desktop sessions. Cipher suites such as RC4 56 bit, RC4 128 bit, Triple DES 168 bit, etc. SSL/TLS is not in play ...
3
votes
3answers
727 views

How to diagnose and handle unexplained open network connections?

I was using Wireshark in order to check the activity of an unknown client in my home network, and to my surprise, I found some strange connections established by my own computer. I disconnected all ...
3
votes
2answers
3k views

how to monitor a Wifi (802.11) network?

How to capture a sequential stream of data between two machines, making no assumptions about network layer protocols? On wired network, one can do it by ARP spoofing and then sniff the network. One ...
3
votes
1answer
91 views

Wireshark tcp filter: tcp[((tcp[12:1] & 0xf0) >> 2):4]

While readinf this doc https://wiki.wireshark.org/CaptureFilters I found this line tcp[((tcp[12:1] & 0xf0) >> 2):4] which figure out the TCP Header Length, but i can't find out how it really ...
3
votes
1answer
94 views

What is required to decrypt other device's WPA2 packets?

As the title specifies, I'm trying to understand the minimum requirements for a utility like Wireshark to decrypt the packets from another device on a simple home network using WPA2 personal (AES). ...
3
votes
2answers
69 views

Is there any chance of PC getting infected when you analyse PCAP malware file?

Currently, there are lots of pcap files of malware analysis carried by other researchers available on Internet. Such files show the traffic pattern and communication of the malware with it's C&C ...
3
votes
1answer
255 views

Log all crypto keys used for outgoing SSL / TLS connections on Linux server

Is there some environment variable that works how SSLKEYLOGFILE works for NSS-reliant programs but which would apply to all outgoing TLS / SSL connections on a Linux server and not just ones that use ...
3
votes
1answer
790 views

ARP poisoning and port forward together

Suppose these assumptions: Router IP address: 192.168.1.1 Router MAC address: 00:00:00:00:00:00 My IP address: 192.168.1.2 My MAC address: 00:00:00:00:00:01 Victim IP address: 192.168.1.3 ...
3
votes
3answers
1k views

How to convert a pcap file to a raw file?

I need to convert a pcap-ng/ now a pcap file to a raw file for being able to analyse it with multimon-ng. Any recommendations? It should be possible, but I am not aware how it should be done.
3
votes
3answers
407 views

Is it possible to obtain the login credentials submitted by users?

It's a question at computer security textbook Assume that user A is about to use some website that requires login credentials. User A starts his web browser, types the website’s URL, and submits the ...
3
votes
1answer
10k views

SSL/TLS version switch over reason

I'm studying the SSL/TLS protocol, more specifically its handshake. I know that initially, a client sends a Client Hello message to the server which includes the TLS version supported by the client. ...
3
votes
1answer
1k views

Decrypt SSH traffic in pcap file given private key

I have a Pcap file that contains some SSH encrypted packets. I have the server public and private key. How do I decrypt these private keys? Is it possible to get the session key using Wireshark or ...
3
votes
1answer
1k views

Does anyone know how to “tcpdump” traffic decrypted by Mallory MITM?

I'm looking for some help in capturing network traffic that I can analyze in Wireshare (or other tools). The tool I'm using is mallory. If anyone is familiar with mallory, I could use some help. I'...
3
votes
0answers
97 views

Decrypt TLS from an IDS

So I am trying to figure out what the packet payload is off of a possible TLS HeartBleed alert from my IDS. I have read that Wireshark is able to do it with some certain keys, but isn't that in real ...
3
votes
0answers
263 views

Some http requests are not send encrypted by vpn! Why?

I subscribed to a VPN service recently, and installed wireshark to take a look at the traffic sent from my computer. Practically all of it goes through UDP protocol, encrypted. But there are two HTTP ...
2
votes
4answers
7k views

Can I listen to a remote IP's traffic using Wireshark? (Man in the Middle)

How can I listen to a remote IP's traffic using Wireshark? (Man in the Middle)
2
votes
4answers
1k views

How would a keylogger bypass Wireshark sniffing?

I often see malicious keyloggers being advertised as having anit-wireshark feature. Meaning their data can't be sniffed. Is it possible to do so? How would they do it? My guess is that they just ...
2
votes
4answers
12k views

How Can I Capture Packets of LAN device in Wireshark?

EDIT: Seeing how this question is so popular, I'll rephrase and improve it to allow for an answer. It's almost unanswerable in its old form. Setup PC running Wireshark, connected to the network ...
2
votes
3answers
205 views

How to decrypt SSL traffic with a packet sniffer when I have the private key?

How you do you decrypt ssl packets (traffic) with the private key? I tried to do this with ssldump and openssl but nothing worked.
2
votes
3answers
2k views

promiscuous vs monitor mode in 802.11

I've been reading up on promiscuous mode and monitor mode as they relate to 802.11 networks. I understand the difference, which is explained here: What is the difference between Promiscuous and ...
2
votes
1answer
1k views

Capturing iTunes traffic with Wireshark - SSL decryption question

I'm fooling around with Wireshark to capture the activation packets for an iPhone and some other stuff, however the traffic is encrypted. There should be a private SSL key somewhere on my computer to ...
2
votes
2answers
3k views

wireshark does't show HTTP requests from other devices

My machine along with several other machines are connected to wireless router. When i open some http page on same machine(M1) where wireshark is installed, it captures the packets such as HTTP GET or ...
2
votes
2answers
3k views

Sniffing From Squid SSL

I created a Squid proxy and a self-signed SSL certificate. The SSL certificate on the server is a private certificate linked to the ssl-bump feature. I am using tshark to dump the SSL traffic, but I ...
2
votes
2answers
868 views

How to capture WhatsApp API requests using Fiddler?

I am trying to capture WhatsApp network requests and not able to do it using Fiddler. This is what I did: Installed Fiddler. Exported Root certificate and installed on my Android device. I modified ...
2
votes
1answer
95 views

Hiding packets, requests, traffic from my PC through Ethernet connected to workplace network

Before everyone jumps on the bandwagon, as I so often see, of saying you shouldn't do anything on a workplace network that is to be done annonymously on your own home network, I want to know an actual ...
2
votes
1answer
200 views

Sniff LAN SSL requests

When I log in into Facebook, using Wireshark in the same machine, I can read the request data in plain-text. That doesn't happen when I'm sniffing my LAN: I can read the SSL packets but they are ...
2
votes
1answer
3k views

How to simulate network attacks and use wireshark to detect them?

I am working on a project which involves me to simulate a network attack and to use wireshark to detect the attack. DOS/MIM etc. I have found the following links that provided help but there are still ...
2
votes
2answers
1k views

is it possible to detect zigbee traffice via wireshark? if yes , how?

I have a zigbee access point. I am not able to detect its network. Also, unable to capture its traffic using wireshark like we capture wifi traffic. Can someone tell me what should be done to analyse ...
2
votes
2answers
1k views

Decoding tunnel bytes in EAP-TLS or EAP-TTLS using Wireshark

I have a few pcaps of traffic for EAP-TTLS conversation, carried by RADIUS. I also have some being carried by EAPoL, but I think the answer to that case might be even less straightforward (though ...
2
votes
1answer
309 views

How to further analyze suspicious traffic

I've been monitoring my network traffic with Little Snitch, and today, when launching Chrome, just the default Chrome tab (shows most frequent sites), it alerted me Chrome was trying to connect over ...