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andrezaiats/README.md

Hey, I'm André

Security researcher, reverse engineer, and builder. I break things open to understand how they work, then build something better — and ship it.

What I do

Reverse engineering & security research — firmware cryptanalysis, ARM/DSP binary analysis, protocol reconstruction, and building emulators from the ground up. I crack proprietary systems and turn the findings into open-source tools.

Machine learning & quantitative finance — feature selection via block permutation importance, multi-objective gradient boosting, out-of-sample validation with statistical rigor (bootstrap CIs, effect sizes), and end-to-end backtesting infrastructure.

Systems programming — performance-critical C/C++, real-time audio DSP, JIT compilation, multi-core/concurrent architecture, and low-level optimization on Linux.

Products & AI tooling — SaaS applications, API services, AI-powered developer tools, and business automation. From architecture to deployment.

Featured projects

Zamphenom — the first open-source emulator that runs real Kemper Profiler firmware as a real-time VST plugin. Built solo in one month: cracked the firmware encryption, reverse-engineered both the ARM host and the Motorola DSP56720 signal processor, contributed fixes to an established open-source emulator engine, and wired it all into a DAW plugin.

Snes9x-Z: a performance-optimized fork of the Snes9x SNES emulator core, bit-exact against upstream, built around a from-scratch dual-core PPU rendering architecture. +61% mean frame-time gain across a corpus of commercial games, every one validated byte-for-byte against the original output.

Stack

Python · C · C++ · ASM (x86/x64, ARM, DSP56k) · Perl · CUDA · TypeScript · C# · TensorFlow · LightGBM · CMake · Ghidra · iPlug2

Get in touch

Open to conversations about security research, reverse engineering, quantitative ML, or systems-level work. Available for high-level architecture, performance engineering, and infrastructure challenges when the fit is right.

LinkedIn

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  1. uo-patcher uo-patcher Public

    Download and update the Ultima Online Classic Client from EA/Broadsword patch servers. Python 3.7+, no dependencies.

    Python 3 3

  2. pmc-compressor pmc-compressor Public

    High-ratio specialized compressor built in a 48h Human+AI experiment. Uses context mixing to beat zpaq/xz on structured binaries & signals.

    C 1

  3. zsort zsort Public

    A blazing fast, parallel, in-memory sorter for Linux. Outperforms GNU sort and nsort using 8-byte prefix keys and cache-friendly architecture.

    C 1 1

  4. sqlite-ctrsee sqlite-ctrsee Public

    Decrypt SQLite databases using a non-standard per-page AES counter-mode construction mislabeled as CCM. Complements SqliteSEECLI for the CCM gap it doesn't cover.

    Python 1

  5. zamphenom zamphenom Public

    Real-time DSP56720 emulator that runs Kemper Profiler firmware as a VST plugin

    C++ 9 2

  6. snes9x-Z snes9x-Z Public

    Performance-optimized fork of Snes9x v1.63 (upstream commit 7a8878f1): bit-exact against upstream, dual-core PPU rendering, +61% mean frame-time gain.

    C++ 15 2