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 ...
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 ...
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 ...
NSA TLSI advisory header

The NSA HSTS Security Feature Mystery

I recently stumbled across an NSA Cyber Advisory titled Managing Risk from Transport Layer Security Inspection (U/OO/212028-19) after first learning about it through Jonas Lejon's blog post NSA varnar för TLS-inspektion (Swedish) ...
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: ...
PolarProxy flow chart

PolarProxy Released

I'm very proud to announce the release of PolarProxy today! PolarProxy is a transparent TLS proxy that decrypts and re-encrypts TLS traffic while also generating a PCAP file containing the decrypted traffic ...