Posts

Flexense SyncBreeze Entreprise 10.3.14 Buffer Overflow (SEH-bypass)

A buffer overflow I discovered while practicing for OSCE.

Introduction to Dynamic instrumentation in Mobile Security

This is a follow-up blog post after my Dynamic Instrumentation in Mobile Security presentation in Nanyang Technology University CSEC Offensive Cyber Security Club.

Cracking OWASP MSTG iOS Crackme - The Uncrackable

My Fellow colleague Bernhard developed two iOS Crackme and here is the writeup.

Android Application/Package APK Structure Part 1

What is the structure of APK and what’s the fuzz of Meitu xiu xiu abuse of permission?

Boot Sequence in Android

What is the boot sequence of Android and what are the different modes that it supports - download mode, recovery mode, twrp and more.

The Mystical Android Sandbox and IPC (Inter-process communication)

How does Android Sandbox work and how does Android IPC work? I am answering two questions from what I have learned from various sources.

© 2026 ryantzj • Theme Moonwalk