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Research & Threat Intel

Raspberry PI hang instruction

By NowSecure Marketing / August 16, 2017 / Comments Off on Raspberry PI hang instruction

Some tips from one of our security pros.

World Writable Code Is Bad, MMMMKAY

By NowSecure Marketing / August 10, 2017 / 0 Comments

Introduction One of the core designs of the Android operating system’s sandbox is to assign different applications a unique user identifier (UID). By doing this, Android reuses the underlying Linux kernel and filesystem properties to enforce boundaries. There are certain situations where apps may share the same UID, but that requires they be signed with […]

Reverse Engineering with JavaScript

By NowSecure Marketing / August 5, 2017 / Comments Off on Reverse Engineering with JavaScript

A security researcher’s tips for using JavaScript for reverse-engineering.

Remote Code Execution as System User on Samsung Phones

By NowSecure Marketing / June 16, 2017 / Comments Off on Remote Code Execution as System User on Samsung Phones

We examine a security vulnerability of Samsung devices.

A Pattern for Remote Code Execution using Arbitrary File Writes and MultiDex Applications

By NowSecure Marketing / June 15, 2017 / Comments Off on A Pattern for Remote Code Execution using Arbitrary File Writes and MultiDex Applications

We examine vulnerabilities that allow attackers to execute code remotely on an Android userUs device.

Android Instant Apps: The security jury is out

By NowSecure Marketing / May 19, 2017 / Comments Off on Android Instant Apps: The security jury is out

The convenience of Instant Apps is appealing, but attackers will view it as a shiny new attack vector, and for me the security jury is still out.

OWASP iOS crackme tutorial: Solved with Frida

By Amy Schurr / April 27, 2017 / Comments Off on OWASP iOS crackme tutorial: Solved with Frida

In this post I explain step-by-step how I solved the OWASP Mobile Security Testing Guide (MSTG) Crackme Level 1 using Frida (and how I then automated it).

iOS Kernel Reversing Step by Step

By NowSecure Marketing / April 14, 2017 / Comments Off on iOS Kernel Reversing Step by Step

This article will show you step by step how to obtain, decrypt and extract a binary version of the iOS kernel

Spearing data in mobile memory: R2Frida memory search

By NowSecure Marketing / March 14, 2017 / Comments Off on Spearing data in mobile memory: R2Frida memory search

NowSecure Researcher Francesco Tamagni recently made significant improvements to R2Frida’s memory-search capabilities, and he answered some questions about those updates and how they make R2Frida (an integration of the Frida and Radare open-source tools/frameworks) even better.

Getting sys_call_table on Android

By NowSecure Marketing / March 13, 2017 / Comments Off on Getting sys_call_table on Android

A detailed HOWTO of getting ‘sys_call_table’ on an Android device.