Rafael F
Offensive Security Lead & Partner at Hakai Security
São Paulo, Brazil
Summary
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SeniorRafael F is an Offensive Security Lead and Partner with a decade of experience specializing in low-level Windows internals, exploit development, and offensive tooling primarily written in Rust. He leads offensive development teams at Hakai Security and has a strong background in malware analysis, incident response, and purple-team adversary emulation using tools like MITRE Caldera and Prelude Detect. Rafael has contributed notable open-source work to the malware development community—most prominently Coffee, a COFF loader in Rust—and is credited on CVE-2024-21338 for an admin-to-kernel exploit that bypasses multiple Windows protections. Comfortable across C, C++, Go, Assembly, Python and JavaScript, he combines hardware-hacking curiosity with practical evasion techniques aimed at defeating EDRs. Based in São Paulo, he blends research-level understanding of OS internals with hands-on red-team leadership and a strong interest in privacy and unconventional technologies.
10 years of coding experience
2 years of employment as a software developer
Portuguese, English
Github Skills (200)
firmware10
bluetooth10
esp3210
scanner10
espressif10
dotnet10
obs10
youtube10
audio10
blueteam10
surveillance10
ffmpeg10
jellyfin10
csharp10
beacon10
Programming languages (17)
Github contributions (5)
b1scoito/clicker
Feb 2021 - Oct 2022
Contributions:15 releases, 75 commits, 116 pushes in 1 year 8 months
b1scoito/mpv-cut
Jan 2022 - Sep 2022
A video cutting/clipping/slicing script for mpv
Contributions:28 commits, 2 PRs, 27 pushes in 7 months
mpvclippingcuttingclipslicing
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