DEF CON 23 [Audio] Speeches from the Hacker Convention

Materials Available here:https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-Fernando-Arnaboldi-Abusing-XSLT-for-Practical-Attacks-UPDATED.pdf

Whitepaper Here: https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-Fernando-Arnaboldi-Abusing-XSLT-for-Practical-Attacks-WP-UPDATED.pdf

Abusing XSLT for Practical Attacks

Fernando Arnaboldi Senior Security Consultant at IOActive

White paper available here:

https://media.defcon.org/DEF CON 23/DEF CON 23 presentations/Fernando Arnaboldi - UPDATED/DEFCON-23-Fernando-Arnaboldi-Abusing-XSLT-for-Practical-Attacks-WP-UPDATED.pdf

Over the years, XML has been a rich target for attackers due to flaws in its design as well as implementations. It is a tempting target because it is used by other programming languages to interconnect applications and is supported by web browsers. In this talk, I will demonstrate how to use XSLT to produce documents that are vulnerable to new exploits.

XSLT can be leveraged to affect the integrity of arithmetic operations, lead to code logic failure, or cause random values to use the same initialization vector. Error disclosure has always provided valuable information, but thanks to XSLT, it is possible to partially read system files that could disclose service or system’s passwords. Finally, XSLT can be used to compromise end-user confidentiality by abusing the same-origin policy concept present in web browsers.

This presentation includes proof-of-concept attacks demonstrating XSLT’s potential to affect production systems, along with recommendations for safe development.

Fernando Arnaboldi is a senior security researcher and consultant at IOActive, Inc. He has over 10 years of experience in the security research space (Deloitte, Core Security Technologies and IOActive) and holds a Bachelor’s degree in Computer Science.

Materials Available Here: ;

https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-Amit-Ashbel-Maty-Siman-Game-of-Hacks-Play-Hack-and-Track-UPDATED.pdf

Game of Hacks: Play, Hack & Track

Amit Ashbel Product Evangelist Checkmarx

Maty Siman CTO and Founder Checkmarx

Fooling around with some ideas we found ourselves creating a hacker magnet. Game of Hacks, built using the node.js framework, displays a range of vulnerable code snippets challenging the player to locate the vulnerability. A multiplayer option makes the challenge even more attractive and the leaderboard spices up things when players compete for a seat on the iron throne.

Within 24 hours we had 35K players test their hacking skills…we weren’t surprised when users started breaking the rules. Join us to:

Play GoH against the audience in real time and get your claim for fame

Understand how vulnerabilities were planted within Game of Hacks

See real attack techniques (some caught us off guard) and how we handled them

Learn how to avoid vulnerabilities in your code and how to go about designing a secure application

Hear what to watch out for on the ultra-popular node.js framework.

Check it out at www.Gameofhacks.com

Amit Ashbel joined Checkmarx From Trusteer (acquired by IBM). He has been with the security community for more than a decade where he has taken on multiple tasks and responsibilities over the years, including technical and Senior Product lead positions.

Amit adds valuable product knowledge including experience with a wide range of security platforms and familiarity with emerging threats and the hi-tech security industry.

Maty is the CTO and founder of Checkmarx. Maty has more than a decade of experience in software development, IT security and source-code analysis. Prior to founding Checkmarx, Maty worked for two years at the Israeli Prime Minister’s Office as a senior IT security expert and project manager. Prior to that, he spent six years with the Israel Defense Forces (IDF), where he established and led a development team in the IDF’s Information Security Center. Maty regularly speaks at IT security conferences and is CISSP certified since 2003.

Web: www.Gameofhacks.com

White paper Here: https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-Brent-White-Hacking-Web-Apps-WP.pdf

Hacking Web Apps

Brent White Security Consultant, Solutionary, Inc.

Assessing the security posture of a web application is a common project for a penetration tester and a good skill for developers to know. In this talk, I’ll go over the different stages of a web application pen test, from start to finish. We’ll start with the discovery phase to utilize OSINT sources such as search engines, sub-domain brute-forcing and other methods to help you get a good idea of targets “footprint”, all the way to fuzzing parameters to find potential SQL injection vulnerabilities. I’ll also discuss several of the tools and some techniques that I use to conduct a full application penetration assessment. After this talk, you should have a good understanding of what is needed as well as where to start on your journey to hacking web apps.

Brent is an Offensive Security Consultant at Solutionary‹An NTT Group Security Company and has spoken at numerous security conferences, including DEF CON 22‹SE Village. He has held the role of Web/Project Manager and IT Security Director at the headquarters of a global franchise company. His experience includes Internal and External Penetration Assessments, Social Engineering and Physical Security Assessments, Wireless and Application Vulnerability Assessments and more.

Twitter: @BrentWDesign

Materials Available Here: https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-Mark-Ryan-Talabis-The-Bieber-Project.pdf

The Bieber Project: Ad Tech 101, Fake Fans and Adventures in Buying Internet Traffic

Mark Ryan Talabis Chief Security Scientist, zVelo

In the past year, I found myself immersed in the multi-billion dollar digital advertising industry. This gave me the opportunity to investigate the unique security challenges and issues facing the industry. It was a shock to me at first how complex the advertising ecosystem was particularly in the advent of programmatic advertising. But I dove in head first and learned a lot which I would like to share with my fellow security professionals. During this time, I got involved with unscrupulous publishers, apathetic ad networks, angry advertisers and activist malware researchers. I encountered self proclaimed experts with fantastic claims, vendors using scare tactics, and a glaring disconnect between the security and ad tech worlds.

In this presentation, I would like to be able to provide the audience with my experience plus a number of things. Among which are:

Provide security professionals a 101 type of introduction to the world of digital advertising ecosystem. Among the things we will tackle is what is programmatic advertising, what the roles are of the different players like ad networks are and how money is made off all this interplay.

Provide the audience a perspective on what security challenges the advertising industry is facing and opportunities for us security professionals to be involved. We all know about malvertising and its a big deal to us security guys but there are bigger, and in an advertisers perspective, more relevant issues that needs to be taken care of first. All of this will be discussed in this talk.

An introduction about the different and creative ways unscrupulous publishers can pad their earnings. We will be talking about hidden ads, ad stacking, intrusive ads, auto-refreshes, popups, popunders, blackhat SEO techniques and dirty inventory.

An in depth discussion on the problems caused by non-human traffic (NHT). We will talk about what it is, why is it a problem, how it is generated, and more importantly, how do we catch it? In fact, this presentation is named the “Bieber Project” which is the experiment which I leveraged to understand non-human traffic and determine how we can identify it.

Mark Ryan Talabis is the Chief Security Scientist for zVelo Inc where he conducts research on advertising fraud and non-human traffic. He is also formerly the Director of the Cloud Business Unit of FireEye. He is an alumni member of the Honeynet Project and a member of the anti-malware working group of the Interactive Advertising Bureau (IAB) where he is contributing in the promotion of threat intel sharing across the advertising industry.

His current work focuses on helping the advertisers and ad networks in finding ways to identify non-human traffic through various browser impression and behavioral based anomaly detection techniques. This also includes work on detecting various impression and click padding techniques by unscrupulous publishers.

He is a graduate of Harvard University and is a co-author of two books from Elsevier Syngress: “Information Security Analytics: Finding Security Insights, Patterns, and Anomalies in Big Data” (2014) and “Information Security Risk Assessment Toolkit: Practical Assessments through Data Collection and Data Analysis” (2012). Techniqies He has presented in various security and academic conferences and organizations around the world including Blackhat, DEF CON, Shakacon, INFORMS, INFRAGARD, ISSA, and ISACA.

Materials Available Here: https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-Chris-Sistrunk-NSM-101-for-ICS.pdf

NSM 101 for ICS

Chris Sistrunk Sr. ICS Security Consultant, FireEye

Is your ICS breached? Are you sure? How do you know?

The current state of security in Industrial Control Systems is a widely publicized issue, but fixes to ICS security issues are long cycle, with some systems and devices that will unfortunately never have patches available. In this environment, visibility into security threats to ICS is critical, and almost all of ICS monitoring has been focused on compliance, rather than looking for indicators/evidence of compromise. The non-intrusive nature of Network Security Monitoring (NSM) is a perfect fit for ICS. This presentation will show how NSM should be part of ICS defense and response strategy, various options for implementing NSM, and some of the capabilities that NSM can bring to an ICS security program. Free tools such as Security Onion, Snort IDS, Bro IDS, NetworkMiner, and Wireshark will be used to look at the ICS environment for anomalies. It will be helpful if attendees have read these books (but they aren’t required): The Cuckoo’s Egg by Cliff Stoll, The Practice of Network Security Monitoring by Richard Bejtlich, and Applied Network Security Monitoring by Chris Sanders and Jason Smith.

Chris Sistrunk is a Senior Consultant at Mandiant, focusing on cyber security for industrial control systems (ICS) and critical infrastructure. Prior to joining Mandiant, Chris was a Senior Engineer at Entergy (over 11 years) where he was the Subject Matter Expert (SME) for SCADA systems. He has 10 years of experience in SCADA systems with tasks such as standards development, system design, database configuration, testing, commissioning, troubleshooting, and training. He was the co-overseer of the SCADA, relay, and cyber security labs at Entergy for 6 years. Chris has been working with Adam Crain of Automatak on Project Robus, an ICS protocol fuzzing project that has found and helped fix many implementation vulnerabilities in DNP3, Modbus, and Telegyr 8979.

Chris helped organize the first ICS Village, which debuted at DEF CON 22.

He is a Senior Member of IEEE, Mississippi Infragard President, member of the DNP Users Group, and also is a registered PE in Louisiana. He holds a BS in Electrical Engineering and MS in Engineering and Technology Management from Louisiana Tech University. Chris also founded and organizes BSidesJackson, Mississippi’s only cyber security conference.

Twitter: @chrissistrunk

https://www.facebook.com/chrissistrunk

Materials Available Here: https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-Mike-Sconzo-I-am-packer-and-so-can-you.pdf

I Am Packer And So Can You

Mike Sconzo Security Researcher

Automating packer and compiler/toolchain detection can be tricky and best and downright frustrating at worst. The majority of existing solutions are old, closed source or aren’t cross platform. Originally, a method of packer identification that leveraged some text analysis algorithms was presented. The goal is to create a method to identify compilers and packers based on the structural changes they leave behind in PE files. This iteration builds upon previous work of using assembly mnemonics for packer detection and grouping. New features and analysis are covered for identification and clustering of PE files.

Mike Sconzo has been around the Security Industry for quite some time, and is interested in creating and implementing new methods of detecting unknown and suspicious network activity as well as different approaches for file/malware analysis. This includes looking for protocol anomalies, patterns of network traffic, and various forms of static and dynamic file analysis. He works on reversing malware, tool creation for analysis, and threat intelligence. Currently a lot of his time is spent doing data exploration and tinkering with statistical analysis and machine learning.

Materials Available Here:https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-Michael-Schrenk-Applied-Intelligence-UPDATED.pdf

Applied Intelligence: Using Information That’s Not There

Michael Schrenk Security Researcher

Organizations continue to unknowingly leak trade secrets on the Internet. To those in the know, these leaks are a valuable source of competitive intelligence. This talk describes how the speaker collects competitive intelligence for his own online retail business. Specifically, you learn how he combines, trends, and analyzes information within specific contexts to manufacture useful data that is real, but technically doesn’t exist on it’s own. For example, you will learn about the trade secrets that are hidden within sequential numbers, how he uses collected intelligence to procure inventory, and how and why he gauges the ongoing health of his industry and that of his competitors. And on a related note, you’ll also learn how the federal government nearly exposed an entire generation to identity fraud.

Michael Schrenk has presented six DEF CON talks on intelligence and organizational privacy, including last year’s talk “You’re Leaking Trade Secrets”. He has developed Internet-based intelligence campaigns since 1995 for organizations as diverse as: Fortune 500 Companies, Private Investigators, Asian Art Dealers, and Investigative Journalists. His adventures in intelligence have taken him around the world, with speaking opportunities in The Middle East, Eastern Europe, The UK, Silicon Valley, and most places in between. Mike is also the author of “Webbots, Spiders, and Screen Scrapers (2007 & 2012, No Starch Press, San Francisco)”. He is again teaming with No Starch Press to write a non-technical Intelligence and Counterintelligence book scheduled for publication in Q1 2016.

Twitter: @mgschrenk

Facebook: facebook.com/webbots

Materials Available Here: https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-Bruce-Potter-Hackers-Guide-to-Risk.pdf

A Hacker’s Guide to Risk

Bruce Potter The Shmoo Group

When the latest and greatest vulnerability is announced, the media and PR frenzy can be dizzying. However, when the dust settles, how do we actually measure the risk represented by a given vulnerability. When pen testers find holes in an organization, is it really “ZOMG, you’re SO 0WNED!” or is it something more manageable and controlled? When you’re attempting to convince the boss of the necessity of the latest security technology, how do really rank the importance of the technology against the threats facing the organization.

Understanding risk can be tricky, especially in an industry that often works on gut feelings and values quantity over quality. But risk and risk management doesn’t need to be complicated. With a few basic formulas and access to some simple models, understanding risk can be a straightforward process. This talk will discuss risk, why its important, and the poor job the hacker community has done when it comes to properly assessing risk. It will also touch on some existing risk assessment and management systems, as well as provide worked examples of real world vulnerabilities and systems and the risks they pose. Finally, this talk will examine some practical guidance on how you, as hackers, security researchers, and security practitioners can better measure risk in your day to day life

Bruce Potter is the founder of The Shmoo Group, one of the organizers of ShmooCon, and a director at KEYW Corporation. Bruce’s lack of degrees and certifications hasn’t stopped him from discussing infosec in numerous articles, books, and presentations. Bruce has been in the computer security field for nearly 2 decades which means he is getting old and increasingly jaded. His primary focus areas are trusted computing, cyber security risk management (yikes!), and large scale vulnerability analysis. Bruce believes that while attackers have the upper hand, we can still do better with the tools we have than most people realize. Bruce also believes in using fake names when ordering coffee but occasionally uses his real name to throw people off his scent.

Twitter: @gdead

Materials Available Here: https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-John-Menerick-Backdooring-Git.pdf

Backdooring Git

John Menerick Security @ NetSuite

Join us for a fun-filled tour of source control management and services to talk about how to backdoor software. We will focus on one of the most popular, trendy SCM tools and related services out there – Git. Nothing is sacred. Along the way, we will expose the risks and liabilities one is exposed to by faulty usage and deployments. When we are finished, you will be able to use the same tools and techniques to protect or backdoor popular open source projects or your hobby project.

John Menerick works on Security @ NetSuite. John’s interests include cracking clouds, modeling complex systems, developing massive software-defined infrastructures, and is the outlier in your risk model.

Materials Available Here: https://media.defcon.org/DEF%20CON%2023/DEF%20CON%2023%20presentations/DEFCON-23-Dennis-Maldonado-Are-we-really-safe-bypassing-access-control-systems-UPDATED.pdf

Are We Really Safe? - Bypassing Access Control Systems

Dennis Maldonado Security Consultant - KLC Consulting

Access control systems are everywhere. They are used to protect everything from residential communities to commercial offices. People depend on these to work properly, but what if I had complete control over your access control solution just by using my phone? Or perhaps I input a secret keypad combination that unlocks your front door? You may not be as secure as you think.

The world relies on access control systems to ensure that secured areas are only accessible to authorized users. Usually, a keypad is the only thing stopping an unauthorized person from accessing the private space behind it. There are many types of access control systems from stand-alone keypads to telephony access control. In this talk, Dennis will be going over how and where access control systems are used. Dennis will walk through and demonstrate the tips and tricks used in bypassing common access control systems. This presentation will include attack methods of all nature including physical attacks, RFID, wireless, telephony, network, and more.

Dennis Maldonado is a Security Consultant at KLC Consulting. His current work includes vulnerability management, penetration testing, infrastructure risk assessment and security research. Dennis’ focus is encompassing all forms information security into an assessment in order to better simulate a real world attack against systems and infrastructure.

As a security researcher and evangelist, Dennis spends his time sharing what he knows about Information Security with anyone willing to learn. Dennis has presented at numerous workshops and meetups in the Houston area. Dennis co-founded Houston Locksport in Houston, Texas where he shares his love for lock-picking physical security.

Twitter: @DennisMald