A collection of technical writeups and articles on Android reverse engineering, ARM architecture, CTF challenges, and competitive programming.
A multi-part series covering Android internals from the ground up -- framework architecture, runtime execution, APK structure, native code, and ARM assembly.
- Chapter 1: Android Fundamentals
- Chapter 2: Unlocking Android Mysteries
- Chapter 3: Smashing The APK
- Chapter 4: Fortress Of The Unbreakable
- Chapter 5: ARM's Intricacies
Solutions and walkthroughs from various CTF competitions.
- 404 CTF 2022 - Sans Protection -- buffer overflow exploitation
- SEECTF 2022 - 4mat -- format string vulnerability
- CSAW 2022 - Anya -- Unity game reverse engineering
- CSAW 2022 - ezMaze -- PyTorch model analysis
- Securinets Jingle Bell 2022 -- 6 crackme challenges
- The Verifier - YinkoShield CTF -- Android reverse engineering with anti-Frida, anti-emulator, anti-repackaging, Merkle integrity, and a Prüfer-tree key derivation
- Sorting & Searching -- classic competitive programming problems with C++ solutions