Laptop, Raspberry Pi, PolarProxy, Internet ASCII

Discovered Artifacts in Decrypted HTTPS

We released a PCAP file earlier this year, which was recorded as part of a live TLS decryption demo at the CS3Sthlm conference. The demo setup used PolarProxy running on a Raspberry ...
TLS Termination Proxy

Reverse Proxy and TLS Termination

PolarProxy is primarily a TLS forward proxy, but it can also be used as a TLS termination proxy or reverse TLS proxy to intercept and decrypt incoming TLS traffic, such as HTTPS ...
RawCap

RawCap Redux

A new version of RawCap has been released today. This portable little sniffer now supports writing PCAP data to stdout and named pipes as an alternative to saving the captured packets to ...
Network drawing with Clients, SecurityOnion and the Internet

Sniffing Decrypted TLS Traffic with Security Onion

Wouldn't it be awesome to have a NIDS like Snort, Suricata or Zeek inspect HTTP requests leaving your network inside TLS encrypted HTTPS traffic? Yeah, we think so too! We have therefore ...
Erik presenting PolarProxy at CS3Sthlm, photo credit: CS3Sthlm

Sharing a PCAP with Decrypted HTTPS

Modern malware and botnet C2 protocols use TLS encryption in order to blend in with 'normal' web traffic, sometimes even using legitimate services like Twitter or Instagram. I did a live demo ...
EH-Net - Chappell - Tshark

Tshark: 7 Tips on Wireshark’s Command-Line Packet Capture Tool

If your current capture process can’t keep up with the traffic and drops packets – you need a new capture process. No debates here. Analyzing a trace file in which you don’t ...
INetSim + PolarProxy

Installing a Fake Internet with INetSim and PolarProxy

This is a tutorial on how to set up an environment for dynamic malware analysis, which can be used to analyze otherwise encrypted HTTPS and SMTPS traffic without allowing the malware to ...
NetworkMiner + Cerberos

Extracting Kerberos Credentials from PCAP

NetworkMiner is one of the best tools around for extracting credentials, such as usernames and passwords, from PCAP files. The credential extraction feature is primarily designed for defenders, in order to analyze ...
NetworkMiner 2.5

NetworkMiner 2.5 Released

I am happy to announce the release of NetworkMiner 2.5 today! This new version includes new features like JA3 and parsers for the HTTP/2 and DoH protocols. We have also added support ...
Raspberry Pi 4 Model B running PolarProxy

Raspberry PI WiFi Access Point with TLS Inspection

This is a how-to guide for setting up a Raspberry Pi as a WiFi Access Point, which acts as a transparent TLS proxy and saves the decrypted traffic in PCAP files. Image: ...