130n@calvinlai.com
  • About Calvin Lai (fkclai)
  • My Work
  • Cyber Security
    • Cyber Security Centre (CSC)
      • Why we need a CSC
      • CSC Team Structure: Roles, Functions, and Tools
        • Key Function & Role
        • Tools & Platforms
        • People
        • Outsource Strategy
      • HRMC Executive Paper
  • Detection and Response
    • Playbook: Threat Prioritization & Automated Response Strategies
      • Scenario: Detecting and Mitigating a Ransomware Attack
      • Scenario: DC Sync Attack Detected and Mitigated
      • Scenario: Pass-the-Hash (PtH) Attack Detected and Contained
      • Scenario: Phishing Campaign with Malware / Credential Theft Detected and Mitigated
  • Application Architecture
    • Comparison of MVC , N-tier and Microservice Architecture
  • Application Security
    • OAuth, SAML, and OpenID Connect: Key Differences and Use Cases
    • Secure Coding Principles
    • HTTP Header Security Principles
    • Mitigating Broken Object Level Authorization (BOLA)
    • Spring Boot Validation
    • Output Encoding in JavaServer Faces (JSF)
    • Session Management Security Issues
    • Common API Security Problems
      • Broken Authentication
      • Excessive Data Exposure
      • Lack of Resources & Rate Limiting
      • Broken Function Level Authorization
      • Unsafe Consumption of APIs
    • JAVA Exception Handling
    • File Upload Validation
    • OAuth 2.0 Security
      • Insecure Storage of Access Tokens
    • Microservice Security
      • Sample Coding Demo
        • Service Implementation
        • Client Interaction
      • Security Solution for Microservices Architecture
    • Modifying and Protecting Java Class Files
      • Modify a Class File Inside a WAR File
      • Direct Bytecode Editing
        • Steps to Directly Edit a Java Class File
          • Update: Java Bytecode Editing Tools
      • Techniques to Protect Java Class Files
        • Runtime Decryption in WebLogic
    • JAVA Program
      • Secure, Concurrent Web Access Using Java and Tor
      • Creating a Maven Java project in Visual Studio Code
  • Exploit/CVE PoC
    • ZeroLogon Exploit
    • Remote Retrieved Chrome saved Encrypted Password
    • Twitter Control an RCE attack
  • Hacking Report (HTB)
    • Hits & Summary
      • Tools & Cheat Sheet
    • Windows Machine
      • Love 10.10.10.239
      • Blackfield 10.10.10.192
      • Remote 10.10.10.180
      • Sauna 10.10.10.175
      • Forest 10.10.10.161
      • Sniper
      • Json
      • Heist
      • Blue
      • Legacy
      • Resolute
      • Cascade
    • Linux Machine
      • Photobomb 10.10.11.182
      • Pandora 10.10.11.136
      • BountyHunter 10.10.11.100
      • CAP 10.10.10.245
      • Spectra 10.10.10.229
      • Ready 10.10.10.220
      • Doctor 10.10.10.209
      • Bucket 10.10.10.212
      • Blunder 10.10.10.191
      • Registry 10.10.10.159
      • Magic
      • Tabby
  • Penetration Testing
    • Web Application PenTest
    • Network/System PenTest
    • Mobile Penetration Test
      • Certificate Pinning
        • Certificate Pinning Bypass (Android)
          • Root a Android Device
          • Setup Proxy Tool - Burp Suite
      • Checklist
  • Threat Intelligence
    • Advanced Persistent Threat (APT) groups
      • North Korean APT Groups
      • Chinese APT Groups
      • Russian APT Groups
      • Other APT
  • Red Team (Windows)
    • 01 Reconnaissance
    • 02 Privileges Escalation
    • 03 Lateral Movement
    • 04 AD Attacks
      • DCSync
    • 05 Bypass-Evasion
    • 06 Kerberos Attack
    • 99 Basic Command
  • Exploitation Guide
    • 01 Reconnaissance
    • 02 Port Enumeration
    • 03 Web Enumeration
    • 04 Windows Enum & Exploit
      • Windows Credential Dumping
        • Credential Dumping: SAM
        • Credential Dumping: DCSync
      • Kerberos Attack
      • RDP
    • 05 File Enumeration
    • 06 Reverse Shell Cheat Sheet
      • Windows Reverse Shell
      • Linux Reverse Shell
    • 07 SQL Injection
    • 08 BruteForce
    • 09 XSS Bypass Checklist
    • 10 Spring Boot
    • 11 WPA
    • 12 Payload list
  • Vuln Hub (Writeup)
    • MrRobot
    • CYBERRY
    • MATRIX 1
    • Node-1
    • DPwwn-1
    • DC7
    • AiWeb-2
    • AiWeb-1
    • BrainPan
  • CTF (Writeup & Tips)
    • CTF Tools & Tips
    • Hacker One
    • CTF Learn
    • P.W.N. University - CTF 2018
    • HITCON
    • Pwnable
      • 01 Start
  • Useful Command/Tools
    • Kali
    • Windows
    • Linux
  • Offensive Security Lab & Exam
    • Lab
    • Tools for an Offensive Certification
      • Strategy for an Offensive Exam Certification
        • CVEs
        • Privilege Escalation
        • Commands
        • Impacket
  • ISO 27001
    • Disclaimer
    • What is ISO 27001
      • Implementation
    • Documentation
    • Common Mistake
    • Q&A
      • Can internal audit to replace the risk assessment
      • Is it sufficient for only the IT department head to support the ISO 27001 program
      • Does the Business Continuity Plan (BCP) and a Disaster Recovery Plan (DRP) are the same?
    • ISO 27001 Controls and Domains
      • 1. Information Security Policies
      • 2. Organization of Information Security
      • 3. Human Resource Security
      • 4. Asset Management
      • 5. Access Control
      • 6. Cryptographic Controls
      • 7. Physical and Environmental Security
      • 8: Operational Security
      • 9. Communications Security
      • 10. System Acquisition, Development, and Maintenance
      • 11. Supplier Relationships
      • 12: Information Security Incident Management
      • 13. Information Security Aspects of Business Continuity Management
      • 14. Compliance
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About Calvin Lai (fkclai)

I am working in the IT industry for over 25 years. For the first 10-years worked on web applications and middle-tier development, in recent years, I focus on application security and management work.

NextMy Work

Last updated 1 month ago

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This blog serves as an open personal journal where I document all of my experiences with platforms like & , CVE Exploit Proof-of-Concepts, exploitation guides, Offensive Security cheat sheets, penetration testing insights, application security coding practices, my perspective on establishing an Information Security Center, and study materials related to Information Security.

Most of the techniques recorded here are coming from the Internet by other security researchers. I just reference it and try to consolidate, rethink and reuse it. This is my way of learning, doing, reading, following, and reviewing. Finally, take notes for future study.

My Contribution

  • Social Community

  • Defensive Security

This blog contains the following topics:

Disclaimer

All material on this website is intended solely for training and academic use. Please be aware that the notes provided here may contain errors. It is highly recommended that you verify the information by consulting the internet and conducting your research.

There are multiple methods to achieve the same goals, so feel free to explore and be creative in your approach.

Finally, the content shared on this website does not represent the structure, functions, program coding, or tools of any specific organization. My aim is to provide general knowledge and insights to help you understand the importance and complexities of cybersecurity.

Do not expect the note completed without error.

Do check the Internet and try it yourself.

Do remember there are many ways to do the same things.

Be creative in your work.

Some people live in dream world; some people live in reality; some make one into the other.

Shoot for the moon, Even if you miss, you'll land among the stars.

心態 決定境界 態度 決定高度

HTB
VulnHub
https://github.com/MOCSCTF/CTF-Write-UP
http://www.hackyclub.com
Information Security Centre
Application Architecture
Application Security
Exploit/CVE PoC
Hacking Report (HTB)
Penetration Testing Work List
Red Team (Windows)
Exploitation Guide
VulnHub Writeup
CTF Writeup & Tips
Useful Command & Tools
Offensive Security Lab & Exam Tips
ISO 27001