Hi 👋, I’m Helvio Junior (aka M4v3r1ck)

Cybersecurity Researcher && Trainer && Penetration Tester

• 📔 I’m co-founder and CEO of Sec4US
• 📚 I’m currently learning Low Level stuffs and studing to OSEE
• 🔖 I’m the first to earn OSCE3 in Latin America
• 🔖 I hold the majors offensive security certifications OSCE3, OSEP, OSED, OSWE, OSCE, OSCP, eMAPT, eCXD, CEH
• 📝 I regularly (or not) write articles on https://www.helviojunior.com.br
• 💬 Ask me about buffer overflow, assembly, shellcoding, binary exploitation, exploit dev, malware dev, network, mobile pentesting and Source Code Review and so on
• 📫 How to reach me helvio.junior@sec4us.com.br

Connect with me:

Creator of 🇧🇷 Brazilian Cyber Security Certifications:

Some Badges:

My public presentations in Brazilian language (PT-BR):

Note: Only on Brazilian language (Portuguese)

• Using Windows In/Direct System call to bypass AV/EDR
• Mini Treinamento Mobile Exploitation
• Windows ROP - Return Oriented Programming
• Linux ROP - Return Oriented Programming
• Shellcode para desenvolvimento de exploits
• Printable ASCII Shellcode
• Assumindo o controle total da sua rede em menos de 1 hora, o ataque e suas principais defesas
• Post exploitation com análise de dump de memória

Interview

Note: Only on Brazilian language (Portuguese)