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Daniel Roethlisberger

PROFILE

Daniel Roethlisberger

Daniel focused on protocol correctness and binary analysis across core security libraries, addressing subtle bugs in ntop/nDPI and qarmin/rustls. He corrected SSLv2 version handling and JA4 mapping, ensuring accurate identification of TLS and DTLS flows, which reduced false positives in protocol classification and improved downstream analytics. In the Vector35/binaryninja-api repository, Daniel enhanced the stability of the SharedCacheView header parsing by implementing mappingOffset-based bounds checks, preventing out-of-bounds reads and reducing crash risk with malformed headers. His work leveraged C, C++, and Rust, demonstrating depth in low-level programming, cryptography, and network protocol analysis to deliver more robust tooling.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

3Total
Bugs
3
Commits
3
Features
0
Lines of code
35
Activity Months2

Work History

May 2025

1 Commits

May 1, 2025

Month 2025-05 focused on stability and robustness of the Binary Ninja API parsing pipeline. Implemented a mappingOffset-based bound check in the SharedCacheView header parsing to ensure platform-specific fields exist within the header bounds, preventing out-of-bounds reads and reducing crashes when processing headers across platforms and in the presence of malformed inputs.

January 2025

2 Commits

Jan 1, 2025

January 2025 monthly summary focusing on protocol correctness and accuracy in TLS/JA4 handling across two core libraries. Delivered targeted bug fixes in SSLv2 version handling, and corrected JA4 mapping to ensure accurate flow identification between DTLS and SSL, improving detection accuracy and downstream analytics.

Activity

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Quality Metrics

Correctness93.4%
Maintainability93.4%
Architecture93.4%
Performance93.4%
AI Usage20.0%

Skills & Technologies

Programming Languages

CC++Rust

Technical Skills

Binary AnalysisCryptographyLow-Level ProgrammingLow-level ProgrammingNetwork Protocol AnalysisProtocol ImplementationProtocol SpecificationReverse EngineeringSecurityTLS/DTLS

Repositories Contributed To

3 repos

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

ntop/nDPI

Jan 2025 Jan 2025
1 Month active

Languages Used

C

Technical Skills

CryptographyNetwork Protocol AnalysisProtocol SpecificationTLS/DTLS

qarmin/rustls

Jan 2025 Jan 2025
1 Month active

Languages Used

Rust

Technical Skills

Low-level ProgrammingProtocol ImplementationSecurity

Vector35/binaryninja-api

May 2025 May 2025
1 Month active

Languages Used

C++

Technical Skills

Binary AnalysisLow-Level ProgrammingReverse Engineering

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