大学里的迷茫与觉醒
在大学的这段路程中，我发现了一个令人深思的现实：时间在悄然流逝，而学校所教授的知识仅仅是冰山一角。如果单纯依赖学校的课程，我注定会原地踏步。
PicoCTF 2025：我的实践之旅
今年，我参加了PicoCTF 2025，这是我网络安全学习道路上的一个重要里程碑。作为一名个人参赛者，我取得了3010/8510的成绩，跨越了多个网络安全领域。
尽管我已经解决了大量挑战，但我意识到单纯解决问题是远远不够的。因此，我开始在GitHub仓库 (https://github.com/djzzlim/picoctf) 系统地记录和分析我的解题过程。这不仅仅是一个成绩的展示，更是我思考和学习的证明。
目前，我正处于文档化旅程的起始阶段。每一个WriteUp都是一次深入思考的机会，帮助我：
- 梳理解题思路
- 理解背后的技术原理
- 反思自己的解题方法
- 为未来的学习积累经验
突破思维的局限
真正的学习从来都是靠自己。这个学期，我深思熟虑后找到了自己的方向。我意识到，如果盲目跟随学校的教学大纲，我的成长将会被严重限制。经验才是关键，而不是那些陈旧的教科书。
零日漏洞：真正的安全挑战
在网络安全领域，零日漏洞（Zero-Day Vulnerability）代表了最前沿、最具挑战性的技术难题。这些未被发现的系统漏洞，对于安全研究者来说是真正的"圣杯"。它们不仅需要深入的技术洞察力，更需要超常的创造性思维。
不是拿到一堆CVE编号就了事，而是要真正理解系统的深层运作机制。零日漏洞揭示的是一个系统最脆弱的地方，这需要远超教科书知识的洞察力和想象力。
为什么不迷信证书
很多人会问我：证书重要吗？我的答案是：经验远比证书更有价值。那些真正擅长找漏洞的人，往往并不依赖于一张张证书。我更加敬佩那些能够深入挖掘系统漏洞、发现CVE的人，而不是那些仅仅拥有一堆证书的从业者。
我的学习计划
为了突破自我，我决定：
- 持续记录PicoCTF 2025中的每一个挑战
- 深入撰写技术WriteUp
- 不断反思和优化解题方法
- 参与更多CTF（夺旗）挑战
- 深入Vulnhub靶场
- 追踪和研究零日漏洞
- 培养独立思考的能力
对知识的思考
证书并非一无是处。它们确实能弥补一些知识盲点。但真正重要的是保持开放的思维，不被过时的知识体系束缚。我追求的是突破常规、开拓视野的学习方式。
最后的寄语
在网络安全的道路上，思维的广度和深度，永远比死记硬背更为重要。真正的成长，来自于不断挑战自己，突破既有框架。零日漏洞不仅是技术难题，更是思维突破的最佳注脚。
The University Dilemma
During my time in university, I discovered a stark reality: time was slipping away, and the knowledge taught in schools was merely the tip of the iceberg. If I were to rely solely on the curriculum, I was destined to remain stagnant.
PicoCTF 2025: My Practical Journey
This year, I participated in PicoCTF 2025, a pivotal milestone in my cybersecurity learning path. As an individual participant, I achieved a score of 3010/8510, spanning multiple cybersecurity domains.
Although I’ve solved numerous challenges, I realized that merely solving problems is far from enough. Therefore, I began systematically documenting and analyzing my problem-solving process in my GitHub repository (https://github.com/djzzlim/picoctf). This is not just a display of achievements, but a testament to my thinking and learning.
Currently, I’m in the initial stages of my documentation journey. Each WriteUp is an opportunity for deep reflection, helping me to:
- Organize my solution strategies
- Understand underlying technical principles
- Reflect on my problem-solving methods
- Accumulate experience for future learning
Breaking Mental Limitations
True learning has always been self-driven. This semester, after careful contemplation, I found my direction. I realized that blindly following the school’s curriculum would severely limit my growth. Experience is key, not those outdated textbooks.
Zero-Day Vulnerabilities: The Real Security Challenge
In the cybersecurity realm, zero-day vulnerabilities represent the most cutting-edge and challenging technical puzzles. These undiscovered system vulnerabilities are the true "Holy Grail" for security researchers. They require not just deep technical insight, but extraordinary creative thinking.
It’s not about collecting CVE numbers, but truly understanding the deep operational mechanisms of systems. Zero-day vulnerabilities reveal a system’s most vulnerable points, demanding insights that far exceed textbook knowledge.
Why I Don’t Worship Certifications
People often ask me: Are certifications important? My answer is: Experience is far more valuable than certifications. Those truly skilled at finding vulnerabilities rarely depend on a stack of certificates. I admire those who can dig deep into system vulnerabilities and discover CVEs, not those who merely possess a pile of certificates.
My Learning Plan
To break through my limitations, I’ve decided to:
- Continuously document challenges from PicoCTF 2025
- Write in-depth technical WriteUps
- Continuously reflect and optimize problem-solving methods
- Participate in more CTF challenges
- Dive deep into Vulnhub platforms
- Track and research zero-day vulnerabilities
- Cultivate independent thinking
Reflections on Knowledge
Certifications aren’t entirely worthless. They can indeed fill some knowledge gaps. But what’s truly important is maintaining an open mind, not being constrained by outdated knowledge systems. I pursue a learning approach that breaks conventional boundaries and broadens perspectives.
Final Thoughts
In the world of cybersecurity, the breadth and depth of thinking will always matter more than rote memorization. True growth comes from continuously challenging oneself and breaking existing frameworks. Zero-day vulnerabilities are not just technical challenges, but the best evidence of breakthrough thinking.