Netherlands May 14, 2013

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All OWASP NL Events 2013

May 14, 2013

"In this Chapter meeting you will learn how to protect your password storage and how to take down bots in a peer to peer network"


18:30 - 19:15 Registration & Pizza
19:15 - 20:00 Securing Password Storage - Tiago Teles
20:00 - 20:15 Break
20:15 - 21:00 Neutralizing Peer-to-Peer Botnets - Dennis Andriesse
21:00 - 21:30 Networking
Chapter meeting flyer (pdf)


Securing Password Storage - Increasing Resistance to Brute Force Attacks

By Tiago Teles.

In this talk Tiago Teles takes apart password protection scheme analyzing the attack resistance of hashes, hmacs, adaptive hashes (such as script), and encryption schemes. First, we present a threat model for password storage. Then audience members will learn the construction, performance, and protective properties of these primitives. Discussion of the primitives will be from a critical perspective modeled as an iterative secure design session. Ultimately, this session presents the solution and code donated as part of the on- going OWASP PSM (password storage module) project. Discussion of this solution will include key techniques for hardening PSM learned through years of delivering production JavaEE code to customers...

The presentation (with notes or without notes) can be found here
The cheat sheet associated with this is here
Wiki page about Rainbow Table
Paper "Honeywords: Making Password-Cracking Detectable" (PDF)

Neutralizing Peer-to-Peer Botnets

By Dennis Andriesse.

This presentation is a case study on our takedown efforts against state-of-the-art peer-to-peer botnets. Unlike conventional botnets, peer-to-peer botnets are decentralized, and thus cannot be disabled by neutralizing centralized control facilities. Takedowns against peer-to-peer botnets require a highly decentralized approach targeting the infected drones themselves. We describe the technical and ethical challenges we faced in our own takedown attempts.

Download the presentation as PDF
Paper about resilience of peer-to-peer botnets (PDF)
Technical rapport about Zeus (PDF)regular updated


Tiago Teles

Tiago Teles is a Technical Consultant with 7 years of experience in clients across different sectors and countries, including banking, insurance, telecommunications and commercial organizations in a variety of roles, Development, Business Intelligence, Quality Assurance and Delivering Training.

Dennis Andriesse

Dennis Andriesse is a Ph.D. candidate in the System and Network Security Group at VU University Amsterdam. His research focuses on binary code (de)obfuscation and reverse engineering techniques. Next to that, he is also interested in advanced malware, particularly in the resilience of peer-to-peer botnets.


Avans Hogeschool Room: OB007 Onderwijsboulevard 215 5223 DE 's-Hertogenbosch