Wireshark v1.11.3 - The world’s foremost network protocol analyzer

Wireshark is the world’s foremost network protocol analyzer. It lets you capture and interactively browse the traffic running on a computer network. It is the de facto (and often de jure) standard across many industries and educational institutions.

Wireshark development thrives thanks to the contributions of networking experts across the globe. It is the continuation of a project that started in 1998.

Changelog v1.11.3

New and Updated Features

The following features are new (or have been significantly updated) since version 1.11.1:

• Qt port:
  • The About dialog has been added
  • The Capture Interfaces dialog has been added.
  • The Decode As dialog has been added. It managed to swallow up the User Specified Decodes dialog as well.
  • The Export PDU dialog has been added.
  • Several SCTP dialogs have been added.
  • The statistics tree (the backend for many Statistics and Telephony menu items) dialog has been added.
  • The I/O Graph dialog has been added.
  • French translation has updated.

The following features are new (or have been significantly updated) since version 1.11.1:

• Mac OS X packaging has been improved.

The following features are new (or have been significantly updated) since version 1.11.0:

• Dissector output may be encoded as UTF-8. This includes TShark output.
• Qt port:
  • The Follow Stream dialog now supports packet and TCP stream selection.
  • A Flow Graph (sequence diagram) dialog has been added.
  • The main window now respects geometry preferences.

The following features are new (or have been significantly updated) since version 1.10:

• Wireshark now uses the Qt application framework. The new UI should provide a significantly better user experience, particularly on Mac OS X and Windows.
• The Windows installer now uninstalls the previous version of Wireshark silently. You can still run the uninstaller manually beforehand if you wish to run it interactively.
• Expert information is now filterable when the new API is in use.
• The “Number” column shows related packets and protocol conversation spans (Qt only).
• When manipulating packets with editcap using the -C <choplen> and/or -s <snaplen> options, it is now possible to also adjust the original frame length using the -L option.
• You can now pass the -C <choplen> option to editcap multiple times, which allows you to chop bytes from the beginning of a packet as well as at the end of a packet in a single step.
• You can now specify an optional offset to the -C option for editcap, which allows you to start chopping from that offset instead of from the absolute packet beginning or end.
• “malformed” display filter has been renamed to “_ws.malformed”. A handful of other filters have been given the “_ws.” prefix to note they are Wireshark application specific filters and not dissector filters.

Download Wireshark v1.11.3

[Windbgshark] Windbg extension for VM traffic manipulation and analysis

This project includes an extension for the windbg debugger as well as a driver code, which allow you to manipulate the virtual machine network traffic and to integrate the wireshark protocol analyzer with the windbg commands.

The motivation of this work came from the intention to find a handy general-purpose way to debug network traffic flows under the Windows OS for the purposes of dynamic software testing for vulnerabilities, for reverse engineering of software and just for fun.

Theory of operation

The main idea is to rely on the Windows Filtering Platform capability to inspect traffic at the application level of OSI (however, the method works well on any level introduced by the WFP API). This gives us a way to intercept and modify any data, which goes through the Windows TCP/IP stack (even the localhost traffic), regardless of the application type and transport/network protocol. Modification and reinjection also work excellent: the operating systems does all the dirty work, reconstructing the transport and network layer headers, for example, as if we were sending the data from the usermode winsock application.

This tool needs a virtualized enviroment (it works fine with VMWare Workstation now) with windbg connected to the virtual machine as a kernel debugger. Installation is done in two steps: driver installation and extension loading in windbg. Driver intercepts network traffic, allows the windbg to modify it, and then reinjects packets back into the network stack. The extension on its turn implements simple interface for packet edit and also uses Wireshark to display data flows. The extension is executed on the host machine, while the driver is located on the virtual machine. To interact with its driver, windbg extension sets the corresponding breakpoints with its own callbacks right inside the driver code. Every time a packet comes in or out, a breakpoint is hit and the windbgshark extracts the app-level payload of the current packet, constructs a new pcap record and sends it to Wireshark. Before the packet is reinjected back, user may modify it, and the Wireshark will re-parse and show the modified record.

Download Windbgshark