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Peiwei Hu

PROFILE

Peiwei Hu

Over a three-month period, Jlu contributed to the rizinorg/rizin and openssl/openssl repositories by developing features and resolving bugs focused on binary analysis, reverse engineering, and documentation clarity. Jlu enhanced rizin’s analysis capabilities by adding stack-change-based ROP gadget search, customizable hex dump output, and improved function and string analysis, all implemented in C with careful attention to memory management and terminal UI consistency. In openssl, Jlu clarified EVP_KDF return value documentation to reduce integration errors. The work demonstrated a methodical approach to code quality, maintainability, and user experience, addressing both core functionality and developer-facing documentation with technical depth.

Overall Statistics

Feature vs Bugs

50%Features

Repository Contributions

10Total
Bugs
4
Commits
10
Features
4
Lines of code
4,288
Activity Months3

Work History

October 2025

1 Commits • 1 Features

Oct 1, 2025

Month: 2025-10 — Delivered a targeted enhancement to the ROP gadget search in rizin, focusing on stack-change criteria to improve precision and analyst efficiency. The feature enables users to search for gadgets based on their impact on the stack, streamlining gadget discovery and reducing manual trial-and-error in ROP analysis. This work strengthens rizin's reverse engineering toolkit and demonstrates a solid pattern of feature-driven contribution to the core gadget search workflow.

May 2025

8 Commits • 3 Features

May 1, 2025

Summary for 2025-05: Delivered targeted enhancements and stability fixes in rizin to improve readability, analysis accuracy, and reliability. Features delivered include the HexII hex dump nodot option, colorized AFI output with support for complex variable types, and IZ string analysis improvements (removing ordinal field and showing string xrefs). Major bugs fixed include Vv mode PgUp navigation fix, memory management cleanup freeing RzList in analysis flows, and UI/color stability when color output is disabled. Overall impact: improved developer productivity, reduced memory pressure during heavy analysis, and consistent, color-accurate debugging output across modes. Technologies/skills demonstrated: C/C++ contributions, memory management, terminal UI/UX improvements, and cross-module integration across analysis, iz, afi, and visual modes.

November 2024

1 Commits

Nov 1, 2024

November 2024 summary for openssl/openssl: Delivered a focused documentation improvement clarifying EVP_KDF return semantics; no functional code changes required. The update enhances API clarity and developer experience, reducing misuse risk and support overhead.

Activity

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Quality Metrics

Correctness96.0%
Maintainability100.0%
Architecture94.0%
Performance96.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

Cc

Technical Skills

Binary AnalysisBug FixBug FixingC ProgrammingCode AnalysisCommand Line InterfaceConfiguration ManagementData StructuresDocumentationExploit DevelopmentHexdumpMemory ManagementReverse EngineeringString ManipulationTUI Development

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

rizinorg/rizin

May 2025 Oct 2025
2 Months active

Languages Used

Cc

Technical Skills

Binary AnalysisBug FixBug FixingC ProgrammingCode AnalysisCommand Line Interface

openssl/openssl

Nov 2024 Nov 2024
1 Month active

Languages Used

C

Technical Skills

C ProgrammingDocumentation

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