Reverse engineering · security · software

YaşarKahramaner

Personal notes on reverse engineering, security and software. A technical journal of what I take apart, figure out and learn.

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What I write about

Each area has its own color. Open a category to reach all related notes.

Reverse Engineering

Binary analysis, disassembly, firmware teardowns and write-ups.

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Security

Application security, vulnerability analysis and defense notes.

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Software

Development, language/tool experiments and engineering notes.

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CTF & Hacking

CTF write-ups, exploitation experiments and technical notes.

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Hardware & Firmware

Embedded systems, firmware and hardware-side reverse engineering.

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Tools

Software, setups and analysis tools I use.

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Notes

Learning notes, thoughts and personal archive posts.

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Software

I Added Drag-and-Drop XAPK Install to scrcpy

I extended scrcpy's drag-and-drop APK install to XAPK/APKS/APKM bundles. A thin C patch, a Python helper that does the work, and the SDL2, argv and security snags I hit along the way.

July 21, 2026
Arduino + C# ile PC kontrollü WS2812B LED sistemi kapak görseli
Hardware & Firmware

A PC-Controlled WS2812B LED System with Arduino and C#

An old maker project: driving a WS2812B addressable LED strip with an Arduino and changing effects/brightness over serial from a C# Windows Forms app, with the wiring, mode logic, command protocol and code.

June 19, 2026
BMW E87 K-CAN Arduino kapak görseli
Reverse Engineering

Reading BMW E87 Steering Wheel Buttons over K-CAN with Arduino

An experiment on my BMW E87 116i: listening to the K-CAN bus with an Arduino and MCP2515 and reading the steering wheel buttons (ID 0x1D6) in the Serial Monitor, with the filtering/decoding code and real output I used.

June 18, 2026
Viber Frida SSL pinning kapak görseli
Reverse Engineering

Analyzing SSL Pinning on Viber 26.6.4.0 with Frida: A 101 Walkthrough

How I analyzed the SSL pinning behavior of Viber 26.6.4.0 with Frida: pulling the APK, finding the relevant methods in JADX, and writing my own Frida script.

June 18, 2026
Why this site exists

Not for a product, but to record the process of figuring things out.

The goal is not to showcase flawless projects, but to keep what I learn while tearing a system apart, analyzing a bug or writing a tool, in my own archive. Honest notes I can return to later, and that might help someone else too.

Real problem-solving notes
Lived process, not SEO-filler text.
Reverse engineering & security focus
A curiosity space, not tied to one language or tool.
Safe and controlled
No sensitive info; safe, public content only.