Configure Squid proxy for SSL/TLS inspection (HTTPS interception)

Squid proxy

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more.

Squid can be configured to make SSL/TLS inspection (aka HTTPS interception) so the proxy can decrypt proxied traffic (Squid calls this feature ssl bump).

Afaik the Squid package included in the Linux distros is not compiled with SSL/TLS inspection support but the good news is that diladele (its github repo and Websafety documentation are useful resources) provides packages for Ubuntu and Centos, recompiled (you can do by yourself) with support for HTTPS filtering and SSL/TLS inspection. This means that we have just to configure Squid. Not an easy task anyway 🙂

I provide to you a working config, follow next steps.

Continue reading “Configure Squid proxy for SSL/TLS inspection (HTTPS interception)”

#RomHack2019

Long time since last post.

#RomHack2019 attendees

I was very busy organizing the second edition of RomHack, the free cyber security conference made with ❤ by Cyber Saiyan – the non-profit organization I founded 2 years ago – that took place in Rome past 28th of September.

We had an incredible lineup with italian and international speakers coming from around the world and 400 attendees. Not just the conference; at the end of the conf 16 team played the on site Capture The Flag.

Continue reading “#RomHack2019”

Make your own phishing campaign using office macro and Powershell as simple dropper

Dave

Phishing is a common attack characterized by simplicity and effectiveness; phishing emails are used to drop malware, cryptolocker, steal credentials… and they are successfull just because Dave. I suggest reading this page to understand “the existing forms of phishing attacks and the currently available mitigations“.

Companies – hopefully – train their employees with internal phishing campaigns; in this post I show how we can build a simple office document that – once opened – sends information to an external server. We can use the document – along with Gophish or other tools – to build our own phishing campaign and test our organization exposure to phishing, teaching people and rising awareness.

Continue reading “Make your own phishing campaign using office macro and Powershell as simple dropper”

Raspberry Pi + Pi-hole: a perfect combo

Raspberry Pi 3 B+ from The Pi Hut
Raspberry Pi 3 B+ from The Pi Hut

In our SOC we use Pi-hole to block network ad-serving domains. Benefits of Pi-hole are highlited on their web site

  • Since ads are blocked before they are downloaded, your network will perform better
  • Network-level blocking allows you to block ads in non-traditional places such as mobile apps and smart TVs, regardless of hardware or OS

Pi-hole works on Linux systems and for home usage is common to install it on a Raspberry Pi device.

This is my jurney into installing Pi-hole on my Raspberry Pi. Continue reading “Raspberry Pi + Pi-hole: a perfect combo”

Enable Telegram and WhatsApp web sites behind a proxy

telegram and whatsapp
telegram and whatsapp

In this post I just show what domains you need to enable to authorize access to  telegram and whatsapp web sites behind your corporate proxy. This is useful when you need to allow – like me – just a subset of your users to access it.

Allow following Telegram domains on your proxy

  • web.telegram.org
  • vesta.web.telegram.org
  • telegram.me

Allow following WhatsApp domains on your proxy

  • web.whatsapp.com
  • dyn.web.whatsapp.com
  • w[0-9].web.whatsapp.com (from w0 to w9)
  • pps.whatsapp.net
  • mms.whatsapp.net
  • mmg-fna.whatsapp.net

MineMeld: threat intelligence automation – connect to STIX/TAXII service [5]

This post is the fifth of a series on Threat Intelligence Automation topic.
Post 1: Architecture and Hardening of MineMeld
Post 2: Foundation: write a custom prototype and SOC integration
Post 3: Export internal IoC to the community
Post 4: Search IoC events with SPLUNK

Long time since my last post. I was very busy creating Cyber Saiyan – a non-profit organization – and organizing RomHack 2018, a free cyber security event that will take place in Rome next September 22th.

On the field of threat intelligence automation and info sharing community building, the work continued too.

I’m working hard with italian community and we setup a STIX/TAXII network using a combination of open source sofware: MISP, OpenTAXII and MineMeld. We are now testing a complex consumer/producer network where companies (producers) can push IoC that, after validation, are injected into the consumer network, a TAXII service built on top of MineMeld.

Continue reading “MineMeld: threat intelligence automation – connect to STIX/TAXII service [5]”

[ITA] Ed il primo BSides Roma è andato!

Sabato 13 Gennaio 2018 sono stato relatore, insieme ad amici e colleghi bravissimi, della prima edizione del BSides Roma con un talk dal titolo “Building an Effective Info Sharing Community“.

L’evento è stato un successo: sala piena e livello dei talk notevole – a parte il mio ovviamente 🙂

Sala piena = Agostino soddisfatto
Sala piena = Agostino soddisfatto

Continue reading “[ITA] Ed il primo BSides Roma è andato!”