André Lima
Researcher / Red Team specialist
Residence: Oslo, Norway
Researcher, speaker ( Bsides Lisbon 2022 , Bsides Oslo 2022 , 2023 , Sikkerhetsfestivalen 2023, 2024, 2025, TIBER-EU Provider Conference 2024, Bsides Kristiansand 2025 , Vinterkonferansen 2026 , Compliance Seminaret 2026 ) and Red Teamer doing it (pentesting / red team) since 2011. Have worked in Portugal, Australia, and now settling with family in Norway (Oslo). My main areas of expertise are: Malware development for Red Teams, including Windows Kernel Rootkits, as well as bypassing EDRs; Reverse Engineering (WinDbg, IDA, x64dbg); Exploit development (bug hunting with WinDbg+IDA and writing remote exploits using python3); Red Team (cloud infrastructure setup and automation, and payload development and automation in C#/C++/C/assembly); Blackbox fuzzing, with qemu and developing my own emulators in C and Rust.
I mostly enjoy researching, figuring new things out, and publishing content at my blog and YouTube “jump call pop” channel.
Personal Information
- Address: Oslo
- Nationality: Portuguese
- Hobbies: Playing basketball, chess, tennis, and watching Formula 1.
Social Profiles
- Blog: 0x4ndr3.github.io
- Twitter: @0x4ndr3
- LinkedIn: linkedin.com/in/aflima
- Personal website: andrelima.info
- Presentations @ Conferences: github.com/0x4ndr3/Presentations
- YouTube channel: youtube.com/@0x4ndr3
- Exploit-DB Shellcodes: exploit-db.com/shellcodes?author=9244
- Exploit-DB Papers: exploit-db.com/papers?author=10628
Languages
- ★★★★★ English
- ★★★★★ Portuguese
- ★★★ French
- ★★ Spanish
Skills
- ★★★★★ Leadership
- ★★★★★ Communication Skills
- ★★★★★ Research
- ★★★★☆ Fuzzing (blackbox)
- ★★★★★ Maldev
- ★★★★☆ Reverse Engineering
- ★★★★☆ Exploit dev
Work Experience
August 2025 – Present
Red Team Leader at Telenor CyberDefence , Oslo
- Lead Red Team initiatives, ensuring technical quality assurance for all deliveries.
- Mentor team members, fostering career development and enhancing technical skills.
- Develop malware and conduct in-depth research to stay ahead of threats.
- Present findings at international conferences, showcasing expertise in Cybersecurity.
November 2023 – August 2025
Team Leader in Cyber Ops — Senior Manager at Cyber & Digital Risk at Advisense , Oslo
Leading a team of ethical hackers to improve and optimize penetration tests and red team engagements. Also doing research and payload development, focusing on EDR bypasses.
March 2022 – October 2023
Manager in Risk Advisory Services (Red Team Operator) at PwC Norway , Oslo
- Windows Rootkit Development
- Windows malware and C2 development
- Research for AV bypass
- Red Team operation
- Infrastructure automation (terraform, ansible, python3)
- Payload generation automation (Roslyn, LLVM)
June 2017 – December 2021
Senior Penetration Tester at Pure Security / Tesserent (Australia), Melbourne
- Reverse Engineering of Windows applications and internals
- Coordinate Red Team engagements
- Research and tool development
- Penetration Testing
- Physical recon and physical attack deployment
October 2016 – June 2017
Team Leader Pentesting Team at Integrity S.A. (Portugal), Lisbon
- Coordinating team members
- Making sure analysis by different members render the same consistency throughout all clients’ pentests done by the team
- Mentoring junior team members
- Guiding the creation of vulnerability templates for reporting
- Develop scripts (python+bash on github) that assist in guaranteeing consistency and efficiency throughout the pentesting process
January 2011 – June 2017
Penetration Tester at Integrity S.A. (Portugal), Lisbon
November 2010 – January 2011
Internship in Information Security Consulting at Integrity S.A. (Portugal), Lisbon
Education
August 2003 – February 2009
Instituto Superior de Engenharia de Lisboa (ISEL), Lisbon — Undergraduate degree in Computer Science
Final project on monitoring system Nagios: pfc.pdf
Courses
- May 2023 — Hypervisor Development for Security Researchers, Offensivecon 2023
- February 2019 — Windows Kernel Rootkits (by Bruce Dang), Offensivecon 2019
- August 2018 — Fuzzing for Vulnerabilities, Huntress Labs (BlackHat USA 2018)
Speaking Events — Conference Presentations
Complete list and details, including videos/slides can be found here .
- GoToSec 2026 (Internal Telenor Conference)
- Compliance Seminaret 2026
- ISF Vinterkonferansen 2026
- Sikkerhetsfestivalen 2023,2024,2025
- Bsides Kristiansand 2025
- TIBER-EU Provider Conference, Düsseldorf, 2024
- Bsides Oslo 2022, 2023
- Bsides Lisbon 2022
- Sapo Codebits 2014
Certifications
- Offensive Security Exploit Developer (OSED) Certificate online
- eLearnSecurity Certified Reverse Engineer (eCRE) Certificate online
- Offensive Security Certified Professional (OSCP) Certificate online
- x86_64 Assembly Language and Shellcoding on Linux Expert (SLAE64) Certificate online
- ISC2 Associate CISSP — May 2011 – May 2012 Do reach out for validation, please.
- CREST CRT Certificate online
- eLearnSecurity Web Application Penetration Testing Extreme (eWPTX/WAPTX) Certificate online
- Offensive Security Wireless Professional (OSWP) Certificate online