🛡️ Infosec University Hackathon – CTF Writeups

This repository contains my personal writeups for challenges from the
Infosec University Hackathon (Virtual CTF) organised by Synchrony in collaboration with CCoE (DSCI & Govt. of Telangana).

The challenges covered multiple cybersecurity domains and tested both technical depth and analytical thinking.
Most challenges were successfully solved and documented here for learning and knowledge sharing.

---

📌 Important Note

• ❌ AI/ML 02 – Cerberus was not solved during the CTF.
• All other listed challenges were solved and have corresponding writeups.
• This repository reflects real progress, not perfection.

---

📂 Challenge List

S.No	Challenge ID	Challenge Name	Category	Status
1	AIML 01	Artemis	AI/ML Security	✅ Solved
2	AIML 02	Cerberus	AI/ML Security	❌ Not Solved
3	Crypto 01	Intercepted Comms	Cryptography	✅ Solved
4	Crypto 02	Vault Breach	Cryptography	✅ Solved
5	Crypto 03	Quantum-Safe Vault	Cryptography	✅ Solved
6	DF 01	Night Walk	Digital Forensics	✅ Solved
7	DF 02	Burned USB	Digital Forensics	✅ Solved
8	Exploitation 01	Berlin's Locker	Exploitation	✅ Solved
9	Exploitation 02	Riosradio	Exploitation	✅ Solved
10	Mobile 01	Confession App	Mobile Security	✅ Solved
11	Mobile 02	Safety App	Mobile Security	✅ Solved
12	Network 01	Onion PCAP	Networking	✅ Solved
13	Network 02	DoH Rhythm	Networking	✅ Solved
14	REV 01	Confession App	Reverse Engineering	✅ Solved
15	REV 02	Evidence Tool	Reverse Engineering	✅ Solved
16	Secure Coding 01	Logview	Secure Coding	✅ Solved
17	Secure Coding 02	Resetpass	Secure Coding	✅ Solved
18	Web 01	Royalmint	Web Security	✅ Solved
19	Web 02	Ticket to Vault	Web Security	✅ Solved
20	Web 03	Safehouse	Web Security	✅ Solved

---

🧠 What This Repository Covers

• Cryptography (RSA, probabilistic encryption, padding flaws)
• Digital Forensics & artifact analysis
• Network traffic analysis (PCAP, DNS, DoH)
• Reverse engineering (apps & binaries)
• Web security vulnerabilities
• Mobile application security
• Exploitation techniques
• Secure coding flaws and fixes

Each writeup explains how I approached the problem, not just the final answer.

---

🛠 Tools & Technologies

• Python / SageMath
• Wireshark
• ExifTool
• Burp Suite
• Ghidra / JADX / APKTool
• Linux utilities
• Custom scripts

---

⚠️ Disclaimer

These writeups are shared for educational purposes only.
Do not use the techniques discussed here on systems without proper authorization.

---

👤 Author

Prince Barai a.k.a 1nf1n1ty🪽
Cybersecurity Researcher | CTF Player | Pentester 🇮🇳

---

“Break. Learn. Build. Repeat.”

---

⭐ Final Note

If this repository helped you learn something new, consider starring it.
Knowledge grows when shared.