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Max Massi developed a new RC4-based Linux fileless payload delivery feature for the rapid7/metasploit-framework repository, focusing on multi-architecture support across ARM64, AArch64, and x86 platforms. Leveraging Metasm for assembly generation and deep knowledge of Linux kernel internals, he implemented configurable encryption parameters and integrated sleep evasion techniques to enhance payload stealth. His work included architecture-specific refinements to the RC4 packer and decrypter, as well as documentation of kernel compatibility for memfd_create. Using assembly and Ruby, Max demonstrated strong low-level programming and cryptography skills, delivering a robust, extensible solution for authorized security testing scenarios.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

6Total
Bugs
0
Commits
6
Features
1
Lines of code
1,271
Activity Months1

Your Network

125 people

Work History

February 2026

6 Commits • 1 Features

Feb 1, 2026

February 2026: Focused on delivering a new RC4-based Linux fileless payload delivery feature with sleep evasion and multi-architecture support (ARM64, AArch64, x86) in rapid7/metasploit-framework. The feature uses Metasm for assembly generation and provides configurable parameters (key size, payload size, encrypted size). The work is complemented by a sequence of architecture-specific commits that progressively refined the RC4 packer and decrypter across platforms, including x86, and documented kernel compatibility notes (memfd_create). No major bugs fixed are recorded in this period. This work expands payload delivery capabilities for authorized security testing and demonstrates strong cross-architecture, cryptography-informed development.

Activity

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Quality Metrics

Correctness83.4%
Maintainability83.4%
Architecture83.4%
Performance83.4%
AI Usage33.4%

Skills & Technologies

Programming Languages

AssemblyRuby

Technical Skills

LinuxLinux kernelLinux programmingMetasmMetasploitassembly languageback end developmentcryptographyencryptionevasion techniquesexploit developmentlow-level programmingpayload developmentsecurity developmentsecurity engineering

Repositories Contributed To

1 repo

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

rapid7/metasploit-framework

Feb 2026 Feb 2026
1 Month active

Languages Used

AssemblyRuby

Technical Skills

LinuxLinux kernelLinux programmingMetasmMetasploitassembly language