2211, 2019

DeepSec 2019 Talk: Abusing Google Play Billing for Fun and Unlimited Credits! – Guillaume Lopes

Sanna/ November 22, 2019/ Conference, Security

In 2017, the estimated global in-app purchase revenue was projected to exceed $37 billion. Just in the Google Play Store, for 2018, more than 200 000 apps are offering in-app purchases. However, the Google Play Billing API is vulnerable by design and allows an attacker to bypass the payment process. I analyzed several android games and found that it’s possible to bypass the payment process. This presentation will show real vulnerable applications (Fruit Ninja, Doodle Jump, etc.). We asked Guillaume a few more questions about his talk. Please tell us the top 5 facts about your talk. The vulnerability presented is really easy to exploit Client side issues are not dead in 2019! It seems nobody cares about losing money in the game industry… Very few vendors fixed their implementation Real vulnerable applications will

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2211, 2019

ROOTS 2019 Talk: Shallow Security: on the Creation of Adversarial Variants to Evade ML-Based Malware Detectors – Fabricio Ceschin

Sanna/ November 22, 2019/ ROOTS

The use of Machine Learning (ML) techniques for malware detection has been a trend in the last two decades. More recently, researchers started to investigate adversarial approaches to bypass these ML-based malware detectors. Adversarial attacks became so popular that a large Internet company (ENDGAME Inc.) has launched a public challenge to encourage researchers to bypass their (three) ML-based static malware detectors. Our research group teamed to participate in this challenge in August/2019 and accomplishing the bypass of all 150 tests proposed by the company. To do so, we implemented an automatic exploitation method which moves the original malware binary sections to resources and includes new chunks of data to it to create adversarial samples that not only bypassed their ML detectors, but also real AV engines as well (with a lower detection rate than

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2111, 2019

ROOTS 2019 Talk: RevEngE is a dish served cold: Debug-Oriented Malware Decompilation and Reassembly – Marcus Botacin

Sanna/ November 21, 2019/ ROOTS

Malware analysis is a key process for knowledge gain on infections and cyber security overall improvement. Analysis tools have been evolving from complete static analyzers to partial code decompilers. Malware decompilation allows for code inspection at higher abstraction levels, facilitating incident response procedures. However, the decompilation procedure has many challenges, such as opaque constructions, irreversible mappings, semantic gap bridging, among others. In this talk, we propose a new approach that leverages the human analyst expertise to overcome decompilation challenges. We name this approach “DoD—debug-oriented decompilation”, in which the analyst is able to reverse engineer the malware sample on his own and to instruct the decompiler to translate selected code portions (e.g., decision branches, fingerprinting functions, payloads etc.) into high level code. With DoD, the analyst might group all decompiled pieces into new code to

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2011, 2019

DeepSec2019 Training: Incident Response Detection and Investigation with Open Source Tools – Thomas Fischer & Craig Jones

Sanna/ November 20, 2019/ Conference

Defences focus on what you know! But what happens when the attackers gain access to your network by exploiting endpoints, software or even you people. Under the assumption that you have been breached, how do you work backwards to gain knowledge of what happened? How can you find those adversaries in your infrastructure? IR detection and response relies on a structured process of identifying observables and collecting evidence. One aspect of this is the practice of proactively seeking out evil in your infrastructure, finding needles in haystacks that link to other needles and unveiling how an organization was compromised and possibly even answering the “why?”. This is commonly referred to as Threat Hunting. In this hands-on training participants will learn about the basic building blocks for an IR detection and investigation programme. The training

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2011, 2019

DeepSec 2019 Talk: Demystifying Hardware Security Modules – How to Protect Keys in Hardware – Michael Walser

Sanna/ November 20, 2019/ Conference

[Editorial note: Cryptography is one of our favourite topics. This is why we invited experts from sematicon AG to show some of their skills and help you navigate through the jungle of false promises by vendors, magic bullets, and misuse of the word „crypto“.] A secure crypto-algorithm is based on the fact that only the key needs to be kept secret, not the algorithm itself. The key is of high value and must be protected. In this talk we will have a look at how to protect keys and why a dedicated hardware is needed to make sure the key is kept secret and always under the control of the owner. Different use cases require different HSMs (Hardware Security Modules). We will have a look at data centres and cloud HSMs as well as

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1911, 2019

ROOTS 2019 Talk: Automatic Modulation Parameter Detection In Practice – Johannes Pohl

Sanna/ November 19, 2019/ ROOTS

Internet of Things (IoT) devices have to be small and energy efficient so that resources for security mechanisms tend to be limited. Due to the lack of open source or license free standards, device manufacturers often use proprietary protocols. Software Defined Radios (SDR) provide a generic way to investigate wireless protocols because they operate on nearly arbitrary frequencies, but they output sine waves that have to be demodulated. This demodulation process slows down security investigations because it forces researchers to start on the physical layer while the real reverse-engineering is performed on the logical layer. We contribute an auto-detection system that estimates all demodulation parameters of a wireless signal and, additionally, explicitly returns all these parameters so that they can be fine-tuned afterwards. This allows security researchers to skip the physical layer and work

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1411, 2019

ROOTS 2019 Talk: Harzer Roller: Linker-Based Instrumentation for Enhanced Embedded Security Testing – Katharina Bogad

Sanna/ November 14, 2019/ ROOTS

Due to the rise of the Internet of Things, there are many new chips and platforms available for hobbyists and industry alike to build smart devices. The software development kits (SDKs) for these new platforms usually include closed-source binaries comprising wireless protocol implementations, cryptographic implementations, or other library functions, which are shared among all user code across the platform. Leveraging such a library vulnerability has a high impact on a given platform. However, as these platforms are often shipped ready-to-use, classic debug infrastructure like JTAG is often times not available. In this paper, we present a method, called Harzer Roller, to enhance embedded firmware security testing on resource-constrained devices. With the Harzer Roller, we hook instrumentation code into function call and return. The hooking not only applies to the user application code but to

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1211, 2019

DeepSec 2019 Talk: 30 CVEs in 30 Days – Eran Shimony

Sanna/ November 12, 2019/ Conference

In recent years, the most effective way to discover new vulnerabilities is considered to be fuzzing. We will present a complementary approach to fuzzing. By using this method, which is quite easy, we managed to get over 30 CVEs across multiple major vendors in only one month. Some things never die. In this session, we’ll show that a huge amount of software is still vulnerable to DLL Hijacking and Symlinks abuse and may allow attackers to escalate their privileges or to DoS a machine. We will show how we generalized these two techniques within an automated testing system called Ichanea, with the aim of finding new vulnerabilities. Our mindset was – choose software that is prone to be vulnerable: Installers, update programs, and services. These types of software are often privileged. Therefore, they are

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1111, 2019

DeepSec 2019 Talk: S.C.A.R.E. – Static Code Analysis Recognition Evasion – Andreas Wiegenstein

Sanna/ November 11, 2019/ Conference, Security

Andreas Wiegenstein has expert advise for software security: Companies increasingly rely on static code analysis tools in order to scan (their) (custom) code for security risks. But can they really rely on the results? The typical SCA tool is designed to detect security issues in code that were created by accident / lack of skill. But how reliable are these tools, if someone intentionally places bugs in code that are not supposed to be found? This talk explores several nasty concepts how malicious code could be camouflaged in order to avoid detection by SCA algorithms. On a technical level, the following concepts are covered covert data flow deep call stacks circular calls source mining counter-encoding data laundering Based on this, I will provide some code snippets as proof of concept for the audience to

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0811, 2019

DeepSec 2019 Talk: Security Analytics and Zero Trust – How Do We Tackle That? – Holger Arends

Sanna/ November 8, 2019/ Conference, Security

For many years we’ve all been in an arms race, fighting daily against new malware varieties and new attack techniques that malicious actors use to fool us and compromise our systems. Many of us rely on state of the art safeguards and have invested tremendous amounts in defending our systems and networks, yet even so, important data is still leaked or important systems are compromised. Firewalls, IDS, IPS or SIEM systems are often unable to prevent or detect attacks. Questions are often raised: “why?” and “how?” is it possible these attacks stay undetected for long periods of time, considering the significant investments into cyber security. And so it seems obvious to say that with the introduction of IoT devices, unmanaged BYOD, combined with legacy systems and end to end encryption, the future will be

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0811, 2019

Deconstruction and Analysis of modern IT Threats – DeepINTEL Security Intelligence Conference disenchants Complexity of Security Threats

Sanna/ November 8, 2019/ Conference, DeepIntel

The modern digital world is constantly threatened. Unfortunately, only a few understand what this actually means. Information security is always presented in distorting stereotypes that have nothing to do with reality. No attack is hammered into a keyboard in minutes. The most dangerous threats can not be detected by watching out for guys in hooded shirts or face masks. Nothing in the digital world can be defused with a simple click. The opposite is the case because domestic and foreign policy have global implications for the digital infrastructure of all organizations. The DeepINTEL Security Intelligence Conference, which takes place every year in Vienna, therefore aims to provide a platform where authorities, businesses, researchers and hackers can productively discuss threats’ characteristics and countermeasures within a closed group. Striking Examples Economic espionage is often cited as

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0511, 2019

DeepSec 2019 Talk: Saving Private Brian – Michael Burke

Sanna/ November 5, 2019/ Conference

This talk will be given as the story of Brian, an aid worker operating in a hostile third country. When he’s stopped going in at the border he had his iPhone taken from him and then returned to him 15 minutes later. Now he can’t be sure if any malware was implanted on his device. Malware that could compromise him, his organisation and anyone who co-operates with him. He needs his phone to do his work but should he stop using it instead? Are all his contacts already compromised? Should he warn them and should he use his phone to do so? And will he and his phone be tracked to any in-person meetings? iOS malware is rare, advanced and difficult to detect when deployed. I will talk through the above scenario on the

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0411, 2019

DeepSec 2019 Talk: Lost in (DevOps) Space – Practical Approach for “Lightway” Threat Modeling as a Code – Vitaly Davidoff

Sanna/ November 4, 2019/ Conference, Development

Threat Modeling is a main method to identify potential security weaknesses, and is an important part of any secure design. Threat Modeling provides a model to analyze how to best protect your assets, prevent attacks, harden your systems, and efficiently prioritize security investment. Regardless of programming language, Threat Modeling provides a far greater return than most other security techniques in the software development life cycle (SDLC) process. Therefore, Threat Modeling should be an early priority in application design process. Unfortunately, it is common knowledge that building a full threat model is always heavily resource intensive, requires a full team of expensive security professionals, takes up far too much time, and is not scalable. This talk will describe modern Threat Modeling methodology and practices that can be fully incorporated into your existing agile process. We

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0111, 2019

DeepSec 2019 Talk: Setting up an Opensource Threat Detection Program – Lance Buttars

Sanna/ November 1, 2019/ Conference, Security

Through the use of event detection monitoring and do it yourself monitoring techniques on a Linux Apache PHP MySQL stack, I will demonstrate how you can create different alarms and reporting surfaces that alert you when your application is being attacked. This case study will demonstrate the use of hacking tools as a defense strategy in a corporate network and will cover the story of the detection of insider threats from the internal application point of view. The entire presentation is a hands-on lab that can be used after the presentation as a guide for attendees to set up a Threat Detection program. We asked Lance a few more questions about his talk. Please tell us the top 5 facts about your talk. The talk covers ways of discovering insider threats. It’s a starting

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3110, 2019

DeepSec 2019 Talk: Oh! Auth: Implementation Pitfalls of OAuth 2.0 & the Auth Providers Who Have Fell in It – Samit Anwer

Sanna/ October 31, 2019/ Conference

Since the beginning of distributed personal computer networks, one of the toughest problems has been to provide a seamless and secure SSO experience between unrelated servers/services. OAuth is an open protocol to allow secure authorization in a standard method from web, mobile and desktop application. The OAuth 2.0 authorization framework enables third-party applications to obtain discretionary access to a web service. Built on top of OAuth 2, OpenID Connect is a helpful “identity layer” that provides developers with a framework to build functional and secure authentication systems. OpenID Connect can perform identity authorization and provide basic profile information for different clients, from web and mobile apps to JavaScript clients. In this race of providing OAuth/Open ID Connect based access to assets, authorization service providers have been forced to release half-baked solutions in the wild

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