rizinorg/rizin
Nov 2024 – Feb 2026
8 Months active
Languages Used
CShellcJSONBashPythonYAMLC++
Technical Skills
Binary AnalysisBuild SystemC ProgrammingC/C++ DevelopmentCapstone FrameworkDWARF
billow
PROFILE
Billow
Billow Fun contributed to the rizinorg/rizin repository by developing and enhancing binary analysis and debugging tools, focusing on architecture support and stability. Over eight months, Billow implemented features such as Xtensa and H8/300 architecture integration, improved DWARF processing for accurate symbol and register mapping, and expanded the Rizin IL VM with floating-point exception handling. Using C, C++, and Bash, Billow addressed memory management and resource safety, notably fixing memory leaks and improving plugin reliability. The work demonstrated depth in low-level programming, disassembler development, and CI/CD automation, resulting in broader platform compatibility and more robust reverse engineering workflows.
Overall Statistics
Feature vs Bugs
71%Features
Repository Contributions
21Total
Bugs
5
Commits
21
Features
12
Lines of code
60,423
Activity Months8
Your Network
39 peopleShared Repositories
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Anton KochkovMember
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MrQuantum1915Member
Work History
February 2026
2 Commits
Feb 1, 2026February 2026 monthly summary for rizin project focusing on stability and compatibility of the C++ demangler after libdemangle library changes. Delivered alignment of the demangler plugin with updated libdemangle revision, updated plugin definition, and expanded tests to cover the changes. These updates improve reliability of C++ symbol demangling across builds and during library upgrades, enabling smoother future libdemangle upgrades.
2 Commits
Feb 1, 2026February 2026 monthly summary for rizin project focusing on stability and compatibility of the C++ demangler after libdemangle library changes. Delivered alignment of the demangler plugin with updated libdemangle revision, updated plugin definition, and expanded tests to cover the changes. These updates improve reliability of C++ symbol demangling across builds and during library upgrades, enabling smoother future libdemangle upgrades.
February 2026
October 2025
5 Commits • 3 Features
Oct 1, 2025October 2025 performance snapshot for rizin: Delivered core device coverage expansions with the Renesas H8/500 plugin, improved compatibility for H8300 family, and refreshed code formatting tooling to clang-format v20. Fixed a critical safety issue in the H8500 disassembly path, and implemented safer string handling. The work enhances binary analysis accuracy across Renesas MCUs, reduces memory-safety risk, and strengthens maintainability through standardized tooling and tests.
October 2025
5 Commits • 3 Features
Oct 1, 2025October 2025 performance snapshot for rizin: Delivered core device coverage expansions with the Renesas H8/500 plugin, improved compatibility for H8300 family, and refreshed code formatting tooling to clang-format v20. Fixed a critical safety issue in the H8500 disassembly path, and implemented safer string handling. The work enhances binary analysis accuracy across Renesas MCUs, reduces memory-safety risk, and strengthens maintainability through standardized tooling and tests.
September 2025
1 Commits
Sep 1, 20252025-09 monthly summary for rizin.org: Stabilized the GDB IO plugin by fixing the open flow to allocate a new descriptor before initialization, preventing uninitialized descriptor usage and reducing null dereference risks.
1 Commits
Sep 1, 20252025-09 monthly summary for rizin.org: Stabilized the GDB IO plugin by fixing the open flow to allocate a new descriptor before initialization, preventing uninitialized descriptor usage and reducing null dereference risks.
September 2025
August 2025
1 Commits • 1 Features
Aug 1, 2025Concise monthly summary for 2025-08: Delivered RZIL architecture support for H8/300 and H8/300H in librz/arch, including disassembly and emulation test cases, and updated the CLI to recognize H8/300. Strengthened test coverage and laid groundwork for broader architecture support to expand hardware compatibility and user reach.
August 2025
1 Commits • 1 Features
Aug 1, 2025Concise monthly summary for 2025-08: Delivered RZIL architecture support for H8/300 and H8/300H in librz/arch, including disassembly and emulation test cases, and updated the CLI to recognize H8/300. Strengthened test coverage and laid groundwork for broader architecture support to expand hardware compatibility and user reach.
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 – rizin performance review: Delivered Xtensa Architecture Register Mapping in DWARF Processing to improve debugging and analysis of Xtensa binaries. Introduced a dedicated Xtensa register header and integrated the mapping into the main DWARF processing logic, enabling accurate register identification during binary analysis. This strengthens Xtensa platform support and reduces debugging time, delivering measurable business value through faster triage and improved analysis quality. Technologies demonstrated include DWARF data processing, register mapping, header definitions, and clean integration into an existing DWARF pipeline.
1 Commits • 1 Features
Feb 1, 2025February 2025 – rizin performance review: Delivered Xtensa Architecture Register Mapping in DWARF Processing to improve debugging and analysis of Xtensa binaries. Introduced a dedicated Xtensa register header and integrated the mapping into the main DWARF processing logic, enabling accurate register identification during binary analysis. This strengthens Xtensa platform support and reduces debugging time, delivering measurable business value through faster triage and improved analysis quality. Technologies demonstrated include DWARF data processing, register mapping, header definitions, and clean integration into an existing DWARF pipeline.
February 2025
January 2025
1 Commits
Jan 1, 2025January 2025: Delivered a focused DWARF parsing memory leak fix for rizin, enhancing stability and resource management in DWARF processing. The change tightens error handling in variable_from_die and ensures proper cleanup in rz_base_type_clone, reducing memory growth and crash risk in debugging workflows. Commit: b196a1f5032d6cf732378234326a957db942f57d.
January 2025
1 Commits
Jan 1, 2025January 2025: Delivered a focused DWARF parsing memory leak fix for rizin, enhancing stability and resource management in DWARF processing. The change tightens error handling in variable_from_die and ensures proper cleanup in rz_base_type_clone, reducing memory growth and crash risk in debugging workflows. Commit: b196a1f5032d6cf732378234326a957db942f57d.
December 2024
6 Commits • 5 Features
Dec 1, 2024December 2024 monthly summary for rizinorg/rizin: Delivered key VM and debugging enhancements, expanded architecture support, and testing automation improvements that collectively improve reliability, observability, and platform coverage. Notable deliverables include FP exception handling in the Rizin IL VM, memory read/write event indexing for better traceability, Xtensa RzIL support in librz, Unicode DWARF symbol name tests, and the -y option for rz-test to streamline automated testing. These changes reduce debugging time, increase accuracy of symbol/debug data, and accelerate CI workflows.
6 Commits • 5 Features
Dec 1, 2024December 2024 monthly summary for rizinorg/rizin: Delivered key VM and debugging enhancements, expanded architecture support, and testing automation improvements that collectively improve reliability, observability, and platform coverage. Notable deliverables include FP exception handling in the Rizin IL VM, memory read/write event indexing for better traceability, Xtensa RzIL support in librz, Unicode DWARF symbol name tests, and the -y option for rz-test to streamline automated testing. These changes reduce debugging time, increase accuracy of symbol/debug data, and accelerate CI workflows.
December 2024
November 2024
4 Commits • 2 Features
Nov 1, 2024November 2024 monthly summary for rizin: Cross-architecture enhancements and stability improvements across Capstone-driven components and DWARF handling. Delivered Xtensa support via Capstone integration with a conditional Xtensa plugin build aligned to Capstone Next, upgraded Tricore support with a Capstone update and RzIL generation refactor, and fixed DWARF5/DWO loading issues with refactored section access and new tests. These efforts broaden target coverage, improve analysis accuracy, and reduce maintenance overhead, delivering tangible business value for debugging and reverse-engineering workflows.
November 2024
4 Commits • 2 Features
Nov 1, 2024November 2024 monthly summary for rizin: Cross-architecture enhancements and stability improvements across Capstone-driven components and DWARF handling. Delivered Xtensa support via Capstone integration with a conditional Xtensa plugin build aligned to Capstone Next, upgraded Tricore support with a Capstone update and RzIL generation refactor, and fixed DWARF5/DWO loading issues with refactored section access and new tests. These efforts broaden target coverage, improve analysis accuracy, and reduce maintenance overhead, delivering tangible business value for debugging and reverse-engineering workflows.
Activity
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Quality Metrics
Correctness90.0%
Maintainability89.6%
Architecture88.6%
Performance83.4%
AI Usage23.8%
Skills & Technologies
Programming Languages
BashCC++JSONNonePythonShellYAMLc
Technical Skills
Assembly LanguageBinary AnalysisBug FixingBuild SystemBuild SystemsC ProgrammingC developmentC++ developmentC/C++ DevelopmentCI/CDCPU ArchitectureCapstone FrameworkCode AnalysisCode FormattingCommand Line Interface
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