Posts | SunnyLo

The Hong Kong Polytechnic University

Tue, 01 Apr 2025 00:00:00 +0000

~ 咦？

HKCERT CTF 2024

Tue, 21 Jan 2025 00:00:00 +0000

First year of having a qualifying round and final round of CTF competition. Also first KOTH CTF commpetition, it is an amazing experience. Although we did not score as well as last year, it was still an wonderful chapter for me.

Thank you for all my teammates hardwork and hope you guys can perform better next year.

📌 Beyond the Classroom: An Activity Summary

Sun, 01 Dec 2024 00:00:00 +0000

Tertiary and Higher education: The Hong Kong Polytechnic University

CTF Team

2024 - 2025 President

2022 - 2024 Member

Faculty of Computer and Mathematical Sciences Student Association

1st Session Exco (Financial Secretary) [2025 - 2026]

AIESEC

2023 - 2024 Member (FLAIM)

YS25 OC L
TC24 OC L
LCIC24 OC L
YS24 OC L

E-Formula Racing Team

2023 - 2024 Member (Operation Team)

Society of Computing Studies

29th Session Exco (General Secretary)

Department of Computing ACM Programming Team

2022 - 2024

Secondary School: St. Louis School

Prefects’ Assocation

2019 - 2020 Vice-Head Boy

2016 - 2019 Member

Student Activity Association

2019 - 2020 General Secretary & I.T. Manager & Christmas Party P.I.C.

Rose Club

2019 - 2020 Committee Member

Aloysians

Volume 51-1: Designer, Photographer, Editor

Volume 50-1: Designer

MTR Summer Youth Programme

2019 Member

The Hong Kong Award for Young People

2017 - 2019 Member

Junior Choir

2015 - 2018 Member

Primary School: CWSA

Prefects

Choir

HackaDay CTF Competition 2024

Mon, 11 Nov 2024 00:00:00 +0000

It was a great honor to have the opportunity to participate once again in the PwC HackDay 2024. This year, we are proud to announce that we emerged as the Champion of the 8th PwC Hack A Day CTF Competition.

The inclusion of a new category, Identity challenges, added an element of excitement to the event. Exploring these challenges proved to be an engaging experience, requiring the application of various techniques to acquire the knowledge of an identity. It was a remarkable journey to successfully exfiltrate a person with just his/her name.

I would like to express my gratitude to all my teammates for their exceptional teamwork throughout the competition. Hope everyone have a nice experience in the competition.

Securities and Futures Commission

Mon, 01 Jul 2024 00:00:00 +0000

It was a valuable opportunity to be as an Intern at the SFC.

1/7/2024 - 31/8/2024

PolyU x NuttyShell Cybersecurity CTF 2024

Fri, 01 Mar 2024 00:00:00 +0000

I am glad to be one of the competition organisers; thank you to everyone who participated and helped.

Official Website

NuttyShell Post #1

NuttyShell Post #2

HKCERT CTF 2023

Fri, 17 Nov 2023 00:00:00 +0000

This year (2023), I had the privilege of participating in the HKCERT CTF for the second time alongside my talented PolyU friends. Together, we achieved an incredible feat, securing 1st place in the Tertiary Division. The competition was a thrilling journey, testing our technical skills and problem-solving abilities across various cybersecurity domains.

Thank you for all my teammates hardwork and I cannot wait to join again next year, and achieving even greater heights together.

HackaDay CTF Competition 2023

Wed, 08 Nov 2023 00:00:00 +0000

It was a great honor to have the opportunity to participate once again in the PwC HackDay 2023. This year, we are proud to announce that we emerged as the Champion of the 7th PwC Hack A Day CTF Competition.

The inclusion of a new category, Artificial Intelligence challenges, added an element of excitement to the event. Exploring these challenges proved to be an engaging experience, requiring the application of various techniques to bypass the restrictions imposed on the AI model, such as the Model Serialization Attack and Data Poisoning Attack. It was a remarkable journey to successfully infiltrate the AI system and discover that not all AI systems are adequately built at present.

I would like to express my gratitude to all my teammates for their exceptional teamwork throughout the competition. I eagerly anticipate the opportunity to reunite with everyone next year.

OGCIO Student Placement

Tue, 01 Aug 2023 00:00:00 +0000

It was a valuable opportunity to undertake my student placement at the Office of the Government Chief Information Officer (OGCIO). This experience has significantly shaped my understanding of cybersecurity and enhanced my skills in this critical field.

Cyber Threat Information Collection and Analysis

One of my key responsibilities was performing cyber threat information collection and analysis. This task sharpened my analytical abilities and provided me with insights into the current landscape of cyber threats. I learned to sift through vast amounts of data, identifying patterns and potential vulnerabilities that could impact our systems. This foundational experience deepened my appreciation for proactive threat intelligence in safeguarding information.

Support in Web Application Security Testing

I also had the chance to support web application security testing. Engaging in vulnerability scanning and penetration testing allowed me to apply theoretical knowledge in a practical setting. I gained hands-on experience with various testing tools and methodologies, reinforcing the importance of rigorous testing in identifying and mitigating security risks before they are exploited.

Developing Plugins for Security Testing

A highlight of my placement was developing plugins aimed at enhancing security testing. This project challenged me to think creatively and technically, as I needed to understand existing frameworks and identify areas for improvement. The experience not only reinforced my coding skills but also taught me how to integrate new functionalities into existing systems effectively.

Participation in Cybersecurity Drills

Participating in cybersecurity drills was both exciting and educational. These simulations allowed me to apply my knowledge in a team setting, emphasizing the importance of collaboration and communication during crisis situations. I learned about the need for preparedness in the face of potential cyber incidents.

Building and Monitoring a SIEM Solution

Building and monitoring a Security Information and Event Management (SIEM) solution was another significant task during my placement. This experience was instrumental in understanding how organizations collect and analyze security data. I learned about the importance of real-time monitoring and how effective SIEM solutions can help organizations respond swiftly to threats.

Developing an LLM Solution

Finally, I had the opportunity to develop a Large Language Model (LLM) solution to streamline daily tasks. This project was particularly exciting, as it combined my interests in cybersecurity and artificial intelligence. It illustrated how innovative technologies can enhance operational efficiency and improve response times within security teams.

Conclusion

Overall, my placement at OGCIO has been an invaluable learning experience. The skills and knowledge I gained will undoubtedly serve me well in my future career. I am grateful for the mentorship and support from my colleagues, and I look forward to applying what I have learned in the field of cybersecurity. This experience has deepened my technical expertise and ignited my passion for making a meaningful impact in the realm of information security.

1/8/2023 - 30/6/2024

Exchange Programe in Germany

Wed, 01 Feb 2023 00:00:00 +0000

Introduction

Embarking on a journey from the bustling streets of Hong Kong to the picturesque campus of the University of Mannheim in Germany has been a dream come true for me. As a year 2 student who had never left Asia before, this semester exchange opportunity granted by PolyU has opened doors to an entirely new world of experiences, culture, and education.

Chapter 1: A Glimpse into My Life at Home

Growing up in the vibrant city of Hong Kong, my academic journey had always been centered around its classrooms, where I formed lasting friendships, gained valuable knowledge, and learned the true essence of multiculturalism. The local culture and Asian way of life shaped my perspectives, making the upcoming journey to Europe an exciting yet nerve-wracking endeavor.

Chapter 2: Embracing the Unknown: Arriving in Mannheim

Stepping foot onto the University of Mannheim’s campus was a surreal experience. The architecture, the vast green spaces, and the historical significance of the city were captivating. However, the initial challenges of navigating an unfamiliar environment, adjusting to a different educational system, and overcoming language barriers were hurdles I was determined to conquer.

Chapter 3: A Melting Pot of Cultures

One of the most enriching aspects of my semester exchange was interacting with students from all corners of the world. The international community at the University of Mannheim opened my eyes to diverse perspectives, traditions, and customs. Collaborating on projects, engaging in discussions, and participating in cultural events broadened my horizons and deepened my appreciation for global unity.

Chapter 4: Academic Exploration and Personal Growth

Studying at the University of Mannheim allowed me to delve into subjects and courses that were previously unavailable to me. The European approach to education encouraged critical thinking, independent research, and active participation in classroom discussions. The rigorous academic environment pushed me to challenge myself and develop skills that will undoubtedly benefit me in my future endeavors.

Chapter 5: Expressing Gratitude to PolyU

I am immensely grateful to PolyU for providing me with this life-changing opportunity. Their support and guidance throughout the application process and the exchange period enabled me to fully immerse myself in this transformative experience. The skills I acquired, friendships I made, and memories I cherished during my time in Mannheim will forever be treasured.

Conclusion: A Chapter Worth Remembering

As I prepare to return to Hong Kong, I can’t help but reflect on the incredible journey I’ve had during this semester exchange. From a year 2 student in Hong Kong’s classrooms to a global citizen at the University of Mannheim, the transformation has been remarkable. This chapter of my life has taught me resilience, adaptability, and the beauty of embracing the unknown. As I close this chapter and begin the next, I carry with me a heart full of gratitude, a mind enriched with knowledge, and a soul forever connected to both Asia and Europe.

HackaDay CTF Competition 2022

Wed, 30 Nov 2022 00:00:00 +0000

I am thrilled to be able to represent The Hong Kong Polytechnic University (PolyU) in the upcoming PwC HackaDay CTF Competition 2022. This international competition provides a unique opportunity for me to demonstrate my knowledge, creativity, and problem-solving skills.

The competition was an online event, with participants from Macau and Singapore. I am proud to have finished 6th in Hong Kong and 11th overall in this fiercely competitive event.

Participating in this esteemed competition was a great honor. My experience in the competition also solidified my passion and commitment to a career in the cybersecurity field.

I believe that the skills and knowledge I gained in this competition will be beneficial to my future endeavours. I am grateful to have had the chance to represent PolyU and to have had the opportunity to grow as a professional.

I am looking forward to more opportunities in the near future to participate in similar events.

HKCERT CTF 2022

Wed, 23 Nov 2022 00:00:00 +0000

This is my second year to participate in HKCERT CTF (last year). This year I had the privilege of being accompanied by some of my PolyU friends, and we achieved a wonderful result of 7th in the Tertiary Division and 14th Overall. It was an honour to be a part of such an event and I would be delighted to be part of it again next year.

My Team

Write ups

PolyU CTF Qualifier Competition 2022

Sun, 02 Oct 2022 00:00:00 +0000

I recently participated in the PolyU CTF Qualifier Competition 2022, playing as an individual and was glad to be able to take part. I am proud to say I finished in 4th place, and although I am not completely satisfied with my result, I am pleased with the effort I put in and the new skills I learnt along the way.

The competition was tough, as there were lots of challenges that I haven’t seen before. I learned a lot from the experience, as I got to understand how different CTFs work and gained a great deal of new knowledge.

I am happy that I was able to join the competition and am glad for the chance to take part. Although I had to compete alone, I was able to build a great rapport with the other teams and form supportive relationships.

Overall, I am really grateful for the chance to compete and learn, and wish I could participate in more competitions. I plan on continuing to hone my skills and improve my strategies, in order to reach my full potential in future CTFs.

Linear And Creative Learning Center

Wed, 01 Jun 2022 00:00:00 +0000

Thank you for giving me a chance to be a part of the community. As a software developer in PHP and JavaScript, I have learned a lot about developing solutions based on OCR and machine learning. I look forward to learning more programming languages and libraries, as it helps me to understand their pros and cons and allows me to decide which language I should use for a specific goal.

01/06/2022 - 15/08/2022

The Hong Kong Polytechnic University Students' Union

Tue, 01 Mar 2022 00:00:00 +0000

落莊了，多謝大家。有興趣可以 follow 返現莊。😆

PolyU COMP ACM Programming Team

Tue, 01 Feb 2022 00:00:00 +0000

Come and join us!

The Hong Kong Polytechnic University CTF Team

Tue, 01 Feb 2022 00:00:00 +0000

Come and join us!

https://polyuctf.com/how-to-join/

HKCERT CTF 2021

Fri, 10 Dec 2021 00:00:00 +0000

Although I have been programming a lot since I was 14 years old, I have yet to participate in any programming challenges. In this competition, I have been invited by a friend who is currently studying in Secondary 6. As I have already guaduated from my Secondary School, we have to join the Open Category which is much more competitive than Secondary division and Tertiary division.

It was a great experience and I would like to participate again next year.

My Team

Great shoutout to my teammate RedTea#9209

St. Louis School Aloysians Volume 51

Tue, 01 Jun 2021 00:00:00 +0000

工作: 設計與排版、攝影、編輯 Post: Designer, Photographer, Editor

St. Louis School Student Activity Association

Sun, 01 Sep 2019 00:00:00 +0000

Thank you for everyone who has been a part of my life.

Table of Contents

2019-2020 Inauguration Ceremony

2019-2020 Join Club Exhibitions

2019-2020 Stationery Selling

2019-2020 Chrismas Party

2019-2020 Chrismas Ball

MTR Summer Youth Programme

Sun, 25 Aug 2019 00:00:00 +0000

The Ayeeee Team 😉

K-Sky Limited

Tue, 13 Aug 2019 00:00:00 +0000

Being a Secondary 4 student didn’t deter me from diving into the world of technology at K-Sky. This summer internship offered hands-on experiences that went beyond textbooks, providing a taste of real-world innovation and problem-solving. I’m immensely grateful for this valuable chance to learn and grow.

13/8/2019 - 23/8/2019

St. Louis School Aloysians Volume 50

Mon, 01 Jul 2019 00:00:00 +0000

工作: 設計與排版 Post: Designer

AYP

Sun, 17 Feb 2019 00:00:00 +0000

It was an exhilarating experience that brought my classmates and me closer than ever. Our shared excitement for the journey, a mix of classroom learning and hiking, united us in a unique way. As we navigated challenging trails and discovered the beauty of nature together, our bond grew stronger. The guidance of our teachers added an extra layer of learning, making the experience both educational and fun. Surprisingly, I found myself as the lone boy in the class, a distinction that made the journey even more memorable. This adventure reminded me that the journey is just as important as the destination, and the people you share it with make all the difference.

St. Louis School Prefects' Assocation

Thu, 01 Sep 2016 00:00:00 +0000

Thank you for everyone who has been a part of my life.

Table of Contents

2016-2017 Swimming Gala

2016-2017 Sports Day

2017-2018 Swimming Gala

2017-2018 Sports Day

2018-2019 Swimming Gala

2018-2019 Sports Day

2018-2019 Thanksgiving Nite

2019-2020 Inauguration Ceremony

2019-2020 Swimming Gala

2019-2020 Sports Day

St. Louis School Junior Choir

Fri, 20 Nov 2015 00:00:00 +0000

Thank you for everyone who has been a part of my life.

Table of Contents

2015 Speech Day

2016 Thanksgiving Nite

2016 Speech Day

2017 Thanksgiving Nite

2017 90th Anniversary Mass Celebration

2017 Speech Day

2018 SL90 Variety Show

2018 Feast of Mary Help of Christians

St. Louis School Rose Club

Tue, 01 Sep 2015 00:00:00 +0000

Thank you for everyone who has been a part of my life.

Table of Contents

2015-2016 Swimming Gala

2015-2016 Sports Day

2016-2017 Swimming Gala

2016-2017 Sports Day

2017-2018 Swimming Gala

2017-2018 Sports Day

2018-2019 Swimming Gala

2018-2019 Sports Day

2019-2020 Swimming Gala

2019-2020 Sports Day

Civil Aid Service Cadet Corps

Sat, 01 Aug 2015 00:00:00 +0000

Thank you for everyone who has been a part of my life.

Posts | SunnyLo

The Hong Kong Polytechnic University

HKCERT CTF 2024

📌 Beyond the Classroom: An Activity Summary

Tertiary and Higher education: The Hong Kong Polytechnic University

Secondary School: St. Louis School

Aloysians

Primary School: CWSA

HackaDay CTF Competition 2024

Securities and Futures Commission

PolyU x NuttyShell Cybersecurity CTF 2024

HKCERT CTF 2023

HackaDay CTF Competition 2023

OGCIO Student Placement

Cyber Threat Information Collection and Analysis

Support in Web Application Security Testing

Developing Plugins for Security Testing

Participation in Cybersecurity Drills

Building and Monitoring a SIEM Solution

Developing an LLM Solution

Conclusion

Exchange Programe in Germany

Introduction

Chapter 1: A Glimpse into My Life at Home

Chapter 2: Embracing the Unknown: Arriving in Mannheim

Chapter 3: A Melting Pot of Cultures

Chapter 4: Academic Exploration and Personal Growth

Chapter 5: Expressing Gratitude to PolyU

Conclusion: A Chapter Worth Remembering

HackaDay CTF Competition 2022

HKCERT CTF 2022

Write ups

Web

Crypto

Reverse

Mics

PolyU CTF Qualifier Competition 2022

Linear And Creative Learning Center

The Hong Kong Polytechnic University Students' Union

PolyU COMP ACM Programming Team

The Hong Kong Polytechnic University CTF Team

HKCERT CTF 2021

St. Louis School Aloysians Volume 51

St. Louis School Student Activity Association

2019-2020 Inauguration Ceremony

2019-2020 Join Club Exhibitions

2019-2020 Stationery Selling

2019-2020 Chrismas Party

2019-2020 Chrismas Ball

MTR Summer Youth Programme

K-Sky Limited

St. Louis School Aloysians Volume 50

AYP

St. Louis School Prefects' Assocation

2016-2017 Swimming Gala

2016-2017 Sports Day

2017-2018 Swimming Gala

2017-2018 Sports Day

2018-2019 Swimming Gala

2018-2019 Sports Day

2018-2019 Thanksgiving Nite

2019-2020 Inauguration Ceremony

2019-2020 Swimming Gala

2019-2020 Sports Day

St. Louis School Junior Choir

2015 Speech Day

2016 Thanksgiving Nite

2016 Speech Day

2017 Thanksgiving Nite

2017 90th Anniversary Mass Celebration

2017 Speech Day

2018 SL90 Variety Show

2018 Feast of Mary Help of Christians

St. Louis School Rose Club

2015-2016 Swimming Gala

2015-2016 Sports Day

2016-2017 Swimming Gala

2016-2017 Sports Day

2017-2018 Swimming Gala

2017-2018 Sports Day