$ curl -s api.github.com/users/ykus4 | jq
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Repositories
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Stars earned
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Followers
$ cat skills.sh
Python
Mobile Security
Trust & Safety
LLM Security
Malware Analysis
Reverse Engineering
Frida
Machine Learning
Apache Airflow
$ ls -la tools/
kagura
LLVM pass plugin for native code obfuscation — CFG flattening, string encryption, anti-debug, VM virtualization, and more. Supports iOS & Android.
shirayuki
Runtime memory toolkit for jailbroken iOS — scan, patch, freeze, and pointer scan with in-app overlay GUI.
shingan
Static analysis tool that visualizes iOS app exposure to reverse engineering.
memdroid
ADB-based memory modification tool for rooted Android devices.
fuin
Web-based Android APK packer. Encrypts DEX bytecode, native libraries, and assets with AES-256-GCM. Supports Unity, multidex, and standard apps. No source changes required.
enma
Frida-based Android Analyzer toolkit.
pypproxy
MITM HTTP/HTTPS proxy for inspecting and modifying traffic — GUI/CUI, rule engine, GraphQL support, security tools.
aioq
Async job queue for Python — Redis/PostgreSQL/MySQL backends, priority queues, job dependencies, dead letter queues, Prometheus metrics, built-in dashboard.
$ find papers/ -name "*.pdf"
Kagura: A Game Anti-Cheat Obfuscation Toolkit for the LLVM New Pass Manager
An open-source LLVM New Pass Manager obfuscation and anti-tamper toolkit for mobile game anti-cheat binaries on iOS and Android. Provides nine composable LLVM passes including control-flow flattening, bogus control flow, instruction substitution, string encryption, constant obfuscation, memory-value obfuscation, indirect branching, and basic-block splitting/reordering. Includes IL2CPP-aware string handling and dual-XOR tamper detection.
Logic Privacy for Game Anti-Cheat Systems: Formal Foundations and Homomorphic Evaluation
A framework for hiding anti-cheat detection logic via server-side fully homomorphic encryption (FHE). Clients encrypt game state under a public key; the server evaluates detection functions over ciphertexts, returning only a binary verdict. Proves logic secrecy and soundness under LWE, and proposes a randomized response mechanism against adaptive oracle queries.
Fourier-Polynomial Features for Obfuscation-Robust Android Malware Detection
Spectral feature extraction framework for Android malware detection. Extracts normalized power spectra from raw DEX bytecode and compresses them into compact feature vectors via polynomial approximation — robust against graph-preserving obfuscation.
$ git log --graph --oneline --all