EXCEEDS logo
Exceeds
Peiwei Hu

PROFILE

Peiwei Hu

Over six months, Jlu contributed to rizinorg/rizin and openssl/openssl, focusing on reverse engineering, cryptography, and memory management. Jlu developed advanced ROP gadget search features, including stack-change and size-based filtering, streamlining exploit analysis workflows. In rizin, Jlu improved hex dump customization, colorized function analysis, and enhanced string cross-referencing, while also addressing memory leaks and clarifying ownership semantics to stabilize resource management. For openssl/openssl, Jlu consolidated error handling and clarified API documentation, reducing misuse risk. Working primarily in C, with expertise in binary analysis and command-line interface development, Jlu delivered robust, maintainable solutions that improved reliability and developer productivity across both projects.

Overall Statistics

Feature vs Bugs

42%Features

Repository Contributions

20Total
Bugs
7
Commits
20
Features
5
Lines of code
5,048
Activity Months6

Your Network

810 people

Work History

December 2025

5 Commits

Dec 1, 2025

December 2025 monthly summary for rizinorg/rizin focused on stabilizing memory management and clarifying ownership semantics to improve reliability, performance, and maintainability across the codebase.

November 2025

1 Commits • 1 Features

Nov 1, 2025

Month 2025-11 — Focused feature delivery in the rizin project with a new Advanced ROP Gadget Size Search command to improve gadget discovery for reverse engineering. No major bugs reported; efforts concentrated on delivering a targeted capability and integrating it into the existing gadget analysis workflow.

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.

October 2024

4 Commits

Oct 1, 2024

October 2024: Focused on hardening OpenSSL reliability by consolidating four commits to improve error handling and return-value checks across critical code paths, notably certificate attribute verification and key operations in openssl/openssl. This work enhances cryptographic validation reliability and reduces risk from misinterpreting errors.

Activity

Loading activity data...

Quality Metrics

Correctness96.6%
Maintainability93.0%
Architecture90.0%
Performance90.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

Cc

Technical Skills

API designBinary AnalysisBug FixBug FixingC ProgrammingC programmingCertificate validationCode AnalysisCode ReviewCommand Line InterfaceConfiguration ManagementCryptographyData StructuresDocumentationExploit Development

Repositories Contributed To

2 repos

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

rizinorg/rizin

May 2025 Dec 2025
4 Months active

Languages Used

Cc

Technical Skills

Binary AnalysisBug FixBug FixingC ProgrammingCode AnalysisCommand Line Interface

openssl/openssl

Oct 2024 Nov 2024
2 Months active

Languages Used

C

Technical Skills

Bug FixingC ProgrammingC programmingCertificate validationCode ReviewCryptography