NationalSecurityAgency/ghidra
Mar 2025 – May 2025
3 Months active
Languages Used
JavaSincGhidra Scripting LanguageSINCSLAXML
Technical Skills
DisassemblerReverse EngineeringeBPFCompiler DevelopmentDisassembler DevelopmentEmbedded Systems
Nicolas Iooss
PROFILE
Nicolas Iooss
Nicolas Iooss enhanced the NationalSecurityAgency/ghidra repository by developing and refining eBPF disassembly and analysis capabilities over a three-month period. He implemented big-endian eBPF support through new language definitions and processor configuration updates, enabling broader binary analysis. Addressing static analysis accuracy, Nicolas corrected eBPF CALL target address calculations and improved ELF relocation handling, using Java and Ghidra Scripting Language to ensure precise control-flow resolution. He also expanded disassembler coverage to support indirect CALLX instructions and ISA v4, aligning load and byte swap semantics with RFC 9669. His work demonstrated depth in reverse engineering, low-level programming, and architecture-aware development.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
6Total
Bugs
2
Commits
6
Features
2
Lines of code
216
Activity Months3
Your Network
158 people
Work History
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for NationalSecurityAgency/ghidra: Delivered big-endian eBPF support in the Ghidra processor, enabling analysis of big-endian eBPF binaries by introducing language definitions and updated processor configurations. No major bugs fixed this month; focus was on delivering a stable, extensible extension to the processor. Overall impact: broadened analysis coverage, improved capability to analyze eBPF artifacts, and faster triage of binaries. Technologies/skills demonstrated: eBPF, Ghidra processor module, language definitions, config management, and Git-based collaboration with clear commit history.
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for NationalSecurityAgency/ghidra: Delivered big-endian eBPF support in the Ghidra processor, enabling analysis of big-endian eBPF binaries by introducing language definitions and updated processor configurations. No major bugs fixed this month; focus was on delivering a stable, extensible extension to the processor. Overall impact: broadened analysis coverage, improved capability to analyze eBPF artifacts, and faster triage of binaries. Technologies/skills demonstrated: eBPF, Ghidra processor module, language definitions, config management, and Git-based collaboration with clear commit history.
May 2025
April 2025
4 Commits • 1 Features
Apr 1, 2025April 2025 (Month: 2025-04) focused on ghidra's eBPF analysis capabilities. Delivered two core areas: (1) eBPF disassembly enhancements including indirect CALLX support and ISA v4 coverage, enabling accurate analysis of modern eBPF binaries; (2) correctness fixes for eBPF loads and byte swap semantics to align with RFC 9669 and host architecture behavior. These changes improve static analysis accuracy, reduce misinterpretations of eBPF code, and expand ghidra's applicability to security workflows across modern binaries.
April 2025
4 Commits • 1 Features
Apr 1, 2025April 2025 (Month: 2025-04) focused on ghidra's eBPF analysis capabilities. Delivered two core areas: (1) eBPF disassembly enhancements including indirect CALLX support and ISA v4 coverage, enabling accurate analysis of modern eBPF binaries; (2) correctness fixes for eBPF loads and byte swap semantics to align with RFC 9669 and host architecture behavior. These changes improve static analysis accuracy, reduce misinterpretations of eBPF code, and expand ghidra's applicability to security workflows across modern binaries.
March 2025
1 Commits
Mar 1, 2025March 2025: Delivered a critical bug fix to eBPF CALL target address calculation in the Ghidra processor, correcting the multiplication of the CALL immediate by 8 in the disp32 operand and ELF Relocation handling. This change improves the accuracy of eBPF disassembly and reduces risk of mis-identified control-flow targets in static analysis, aligned with the commit c1d96a214049944549c6429f994907f19de72acb.
1 Commits
Mar 1, 2025March 2025: Delivered a critical bug fix to eBPF CALL target address calculation in the Ghidra processor, correcting the multiplication of the CALL immediate by 8 in the disp32 operand and ELF Relocation handling. This change improves the accuracy of eBPF disassembly and reduces risk of mis-identified control-flow targets in static analysis, aligned with the commit c1d96a214049944549c6429f994907f19de72acb.
March 2025
Activity
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Quality Metrics
Correctness100.0%
Maintainability96.6%
Architecture96.6%
Performance93.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
Ghidra Scripting LanguageJavaSINCSLASincXML
Technical Skills
Compiler DevelopmentDisassemblerDisassembler DevelopmentEmbedded SystemsLow-Level ProgrammingReverse EngineeringeBPF
Repositories Contributed To
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