crazy hugsy
Software Engineer at blahcat
Ring0, Japan
Summary
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Rockstarcrazy hugsy is a software engineer with 12 years focused on exploit development, reverse engineering, and offensive security tool development, based in Japan. They are an active open-source maintainer, known for contributions to GEF (GDB Enhanced Features) that improve debugging for exploit devs and for creating cemu, a lightweight multi-architecture emulator and assembly playground. Their work blends low-level assembly expertise with practical tooling—adding instruction stepping, emulator logging, and thread-aware context displays that make complex debugging workflows more reliable. Comfortable across Python and assembly, they regularly bridge emulator internals and debugger ergonomics to accelerate vulnerability research. Operating from a Ring0 mindset, they bring a pragmatic, security-first approach to building developer-focused infrastructure.
12 years of coding experience
Github Skills (18)
debugging10
debug10
memory-allocation10
assembly10
python10
memory-management10
memory-model10
x8610
gdb10
exploit10
x86-6410
reverse-engineering10
capstone9
unicorn9
mips9
Programming languages (11)
Github contributions (5)
hugsy/gef
Mar 2015 - Jan 2023
GEF (GDB Enhanced Features) - a modern experience for GDB with advanced debugging capabilities for exploit devs & reverse engineers on Linux
Role in this project:
Reverse Engineer & Exploit Developer
Reverse Engineer & Exploit DeveloperContributions:18 releases, 535 reviews, 1649 commits in 7 years 10 months
Contributions summary:Crazy made several contributions to the GEF project, focusing on enhancing its debugging capabilities for exploit development and reverse engineering. Their commits involved adding and modifying features related to context display, particularly for threads, and function arguments. The user also integrated new functions into the debugging environment to add support for FreeBSD and implemented features to ensure correct memory access.
pythondiscordctfglibcsparc
hugsy/cemu
May 2016 - Jun 2022
Cheap EMUlator: lightweight multi-architecture assembly playground
Role in this project:Back-end Developer & Assembly Programmer
Back-end Developer & Assembly ProgrammerContributions:9 releases, 4 reviews, 255 commits in 6 years 2 months
Contributions summary:Crazy contributed to the development of the "Cheap EMUlator" project, focused on assembly code. They added and implemented an emulator log window and the ability to step into instructions. The contributions included modifications to the core Python script (`cemu/core.py`), and also code changes to the emulator, enhancing its functionality by providing new code. They also incorporated functionalities to save and load files and improved the instruction stepper.
emulatorcheapsparcarmv8shellcode
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