Security
One Scheme to Rule Them All: OAuth Account Takeover
This article delves into the exploitation of OAuth account takeover using app impersonation through custom scheme hijacking, an overlooked vulnerability pattern affecting most OAuth providers and consequently many popular applications including apps with over 1B downloads.
Tue 17 October 2023
ZIP Exploitation: Critical Vulnerabilities Found in Popular Zip Libraries in Swift and Flutter
Recent in-depth investigations reveal serious vulnerabilities discovered in widely-used zip packa...
Fri 04 August 2023
Ostorlab's Insecure Flutter Apps: A Playground for Learning and Testing Mobile Security
Ostorlab has open-sourced two Flutter applications, designed to be intentionally insecure for tes...
Mon 10 July 2023
zCamera, 100M+ installation app, from remote compromise to data leaks
This article is a technical deep dive, showing how a 100M+ installation image application can exp...
Tue 04 July 2023
Secure Mobile Biometric Authentication: Best Practices and Implementation Guidelines for Kotlin, Swift, and Flutter
In this Article, we define a secure implementation of mobile biometric authentication and provide detailed implementations in the 3 main modern mobile languages, namely Kotlin for Android, Swift for iOS, and Dart for Flutter multiplatform applications.
Flutter Reverse Engineering and Security Analysis
Article on Static and Dynamic analysis techniques for Reverse engineering Flutter Applications. The article goes over runtime patching, custom ABI interception and traffic interception.
Latest posts
GodFather Android Malware Analysis
In This article, we analyze the GodFather Android malware, which continues to appear in various formats and primarily targets banking and cryptocurrency applications to steal money and sensitive information for the users.
Fri 14 April 2023
Text4Shell (CVE-2022-42889) in Mobile Applications ... should I worry?
CVE-2022-42889 is a vulnerability in the Apache Commons Text Library caused by string interpolation abusing powerful handlers and present in popular application like Amazon Shopping, Udemy and Grammarly. This article goes over the applicability and risk of this vulnerability for Mobile Applications.
Mon 24 October 2022
Attack Surface Insights - part 2
Attack Surface is not just about open ports and services; this article covers key insights beyond the standard technical ones.
Thu 16 June 2022
Mapping your Attack Surface - part 1
Attack surface mapping has become the number one headache of CISO's of most large organization, this article goes over techniques and tools used by Ostorlab to enable powerful and accurate attack surface discovery and monitoring.
Tue 17 May 2022
How did we react to Log4j vulnerability? Read our analysis for mobile applications.
What is the impact of Log4j vulnerability on mobile applications
Mon 20 December 2021
Universal bypass of SSL Pinning ... from theory to a full working PoC with LLDB
This article is about bypassing SSL pinning without needing to. Sounds confusing? We will go over the theory, build a full PoC using LLDB in Python and finally extend it to other cool tasks.
Tue 18 May 2021
5 things every mobile security professional should know about WebViews
This article is about WebViews and the security notions we need to have in mind when using these component in both Android and iOS.
Tue 18 May 2021
Ostorlab detects Dependency Confusion
Dependency Confusion is a new attack with high severity impact. This article is an overview of the vulnerability as well as other supply chain attacks.
Wed 03 March 2021