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Recuite 2025 - HCMUS
6 tháng 10, 2025 - 13 tháng 10
HCMUS - Computer Security Club
Rank #4/ 150

6946
Points
#4
Rank
20/20
Solved
About the Competition
Cuộc thi CTF tuyển sinh do Computer Security Club, Đại học Khoa học Tự nhiên TP.HCM tổ chức. Các challenges bao gồm Cryptography, Forensics, Binary Exploitation, Web Security và Reverse Engineering với độ khó từ beginner đến advanced.
Achievements
- Giải được 26+ challenges trong 5 categories khác nhau
- Hoàn thành tất cả Binary Exploitation intro challenges (BOF, Canary, PIE, GOT)
- Khai thác thành công nhiều lỗ hổng Web (Command Injection, SSTI, PRNG)
- Khai thác CVEs thực tế (Acropalypse CVE-2023-21036, KeePass CVE-2023-32784)
- Áp dụng các kỹ thuật Forensics, Cryptography và Reverse Engineering nâng cao
Challenges & Write-ups (20/20)
Filter by Category:
Cryptography(5)
Super Computer V2
300 pts
Cryptography
Hard
PRNG
Recurrence
Matrix
Off-by-one
Circle
250 pts
Cryptography
Hard
Elliptic Curve
Discrete Log
Pohlig-Hellman
Baby RSA 2
200 pts
Cryptography
Medium
RSA
CRT
Fault Attack
Large Plaintext
Baby RSA 1
150 pts
Cryptography
Medium
RSA
CRT
Fault Attack
Baby Pad
100 pts
Cryptography
Easy
Padding Oracle
AES-CBC
Cryptanalysis
Forensics(6)
Painted
500 pts
Forensics
Hard
Memory Dump
Paint
BMP
Entropy Analysis
Unlocked
400 pts
Forensics
Hard
KeePass
CVE-2023-32784
Memory Dump
Password Recovery
Exfiltrated
300 pts
Forensics
Hard
DNS Exfiltration
SAM
NTLM
Password Cracking
Cropped
250 pts
Forensics
Medium
Acropalypse
CVE-2023-21036
PNG
Screenshot
Leak
180 pts
Forensics
Medium
PCAP
SQL Injection
Blind SQLi
Database Leak
Mouse Cap
120 pts
Forensics
Medium
USB
PCAP
Mouse Movements
HID
Binary Exploitation(4)
GOT Intro
250 pts
Binary Exploitation
Medium
GOT Overwrite
Arbitrary Write
Partial RELRO
PIE Intro
200 pts
Binary Exploitation
Medium
PIE
ASLR
Information Leak
Base Calculation
Canary Intro
150 pts
Binary Exploitation
Easy
Stack Canary
Information Leak
Buffer Overflow
Buffer Overflow Intro
100 pts
Binary Exploitation
Easy
Buffer Overflow
RIP Control
Stack
Web(5)
BP88 Level 3
300 pts
Web
Medium
PRNG
Hidden Seed
DevTools
Browser Exploitation
BP88 Level 2
250 pts
Web
Medium
PRNG
Dynamic Seed
Timestamp
Socket.IO
Course List
200 pts
Web
Medium
SSTI
Server-Side Template Injection
Jinja2
Flask
BP88 Level 1
150 pts
Web
Easy
PRNG
Static Seed
Predictable Random
Dice Game
AI Chatbot
100 pts
Web
Easy
Command Injection
subprocess
Python Flask
Showing 20 challenges
Tags
CTF
Security
Cryptography
Forensics
Binary Exploitation
Web Security
Reverse Engineering