Trainning
  • WEEK 2
    • Tìm hiểu các thành phần hệ điều hành
    • TryHackMe| Abusing Windows Internals
  • WEEK 3
    • Một số phương thức Persistence
    • Các Phương thức tấn công Process nâng cao
    • Implement tấn công
  • week 4
    • Linux
      • Basic Concept Linux
      • Symlink
      • Linux Persistence
      • Notes
    • PROCESS LIST
    • Network
      • OSI MODEL(OPEN SYSTEMS INTERCONNECTION MODEL)
      • Các giao thức phổ biến trong môi trường enterprise
        • SMB - Server Message Block
        • LDAP - Lightweight Directory Access Protocol
          • LDAP Injection
        • SSH - Secure Shell
        • RDP - Remote Desktop Protocol
        • ICMP - Internet Control Message Protocol
        • DNS - Domain Name System
        • DHCP - Dynamic Host Configuration Protocol
        • HTTP/HTTPS
  • WEEK 5
    • Các dạng tấn công trong network phổ biến (SYNC Flood, MAC flood,...)
    • Reconnaissance
    • Active Directory
      • Group Policy
    • NTLM vs Kerberos
      • Spoofing LLMNR, NBT-NS, mDNS/DNS and WPAD and Relay Attacks
      • Path The Hash
      • ASREPRoast
        • Demo
      • Kerberoasting
        • Demo
      • Silver Ticket
        • Demo
      • Golden Ticket
        • Demo
      • Tóm tắt
    • Stealing Windows Credentials
      • Mimikatz
      • Custom SSP
    • LLMNR Poisoning, NTLM Replay
  • WEEK 6 + 7
    • DOM-based vulnerabilities
      • DOM-based open redirection
    • SQL Injection
      • Lab: Retrieving hidden data
      • Lab: Subvering application logic
      • SQL injection UNION attacks
        • Lab: SQL injection UNION attack, determining the number of columns returned by the query
        • Lab: SQL injection UNION attack, finding a column containing text
        • Lab: SQL injection UNION attack, retrieving data from other tables
        • Lab: SQL injection UNION attack, retrieving multiple values in a single column
      • Blind SQL Injection
        • Lab: Blind SQL injection with conditional responses
        • Lab: Blind SQL injection with conditional errors
        • Lab: Visible error-based SQL injection
        • Lab: Blind SQL injection with time delays
        • Lab: Blind SQL injection with time delays and information retrieval
        • Lab: Blind SQL injection with out-of-band interaction
        • Lab: Blind SQL injection with out-of-band data exfiltration
      • Examining the database
        • Lab: SQL injection attack, querying the database type and version on Oracle
        • Lab: SQL injection attack, querying the database type and version on MySQL and Microsoft
        • Lab: SQL injection attack, listing the database contents on non-Oracle databases
        • Lab: SQL injection attack, listing the database contents on Oracle
      • Che dấu cuộc tấn công bằng Encode
        • Lab: SQL injection with filter bypass via XML encoding
    • Authentication
      • Lỗ hổng trong đăng nhập bằng mật khẩu
        • Lab: Username enumeration via different responses
        • Lab: Username enumeration via subtly different responses
        • Lab: Username enumeration via response timing
        • Lab: Broken brute-force protection, IP block
        • Lab: Username enumeration via account lock
        • Lab: Broken brute-force protection, multiple credentials per request
      • Lỗ hổng trong xác thực đa nhân tố
        • Lab: 2FA simple bypass
        • Lab: 2FA broken logic
        • Lab: 2FA bypass using a brute-force attack
      • Các lỗ hổng trong cơ chế xác thực khác
        • Lab: Brute-forcing a stay-logged-in cookie
        • Lab: Offline password cracking
        • Lab: Password reset broken logic
        • Lab: Password brute-force via password change
        • Lab: Password brute-force via password change
      • Lỗ hổng xác thực OAuth 2.0
        • Lab: Authentication bypass via OAuth implicit flow
        • Lab: Authentication bypass via OAuth implicit flow
        • Lab: Forced OAuth profile linking
        • Lab: OAuth account hijacking via redirect_uri
        • Lab: Stealing OAuth access tokens via an open redirect
        • Lab: Stealing OAuth access tokens via a proxy page
        • Lab: SSRF via OpenID dynamic client registration
    • Access Control
      • Lab: Unprotected admin functionality
      • Lab: Unprotected admin functionality with unpredictable URL
      • Lab: User role controlled by request parameter
      • Lab: User role can be modified in user profile
      • Lab: URL-based access control can be circumvented
      • Lab: Method-based access control can be circumvented
      • Lab: User ID controlled by request parameter
      • Lab: User ID controlled by request parameter, with unpredictable user IDs
      • Lab: User ID controlled by request parameter with data leakage in redirect
      • Lab: Insecure direct object references
      • Lab: Multi-step process with no access control on one step
      • Lab: Referer-based access control
    • Path Traversal
      • Lab: File path traversal, simple case
      • Lab: File path traversal, traversal sequences blocked with absolute path bypass
      • Lab: File path traversal, traversal sequences stripped non-recursively
      • Lab: File path traversal, traversal sequences stripped with superfluous URL-decode
      • Lab: File path traversal, validation of start of path
      • Lab: File path traversal, validation of file extension with null byte bypass
    • Command Injection
      • Lab: OS command injection, simple case
      • Lab: Blind OS command injection with time delays
      • Lab: Blind OS command injection with output redirection
      • Lab: Blind OS command injection with out-of-band interaction
      • Lab: Blind OS command injection with out-of-band data exfiltration
    • File uploads
    • Server-side request forgery (SSRF)
    • Cross-site scripting
      • Reflected XSS
      • Stored XSS
      • DOM-based XSS
      • Cross-site scripting contexts
    • Cross-site request forgery (CSRF)
      • Bypassing CSRF token validation
      • Bypass SameSite cookie restrictions
      • Page 2
    • Insecure deserializaton
    • Burp Suite
    • Tóm tắt
  • Week 8
    • Rà soát mã độc
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  1. WEEK 6 + 7
  2. Path Traversal

Lab: File path traversal, validation of start of path

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Last updated 8 months ago

Mô tả

Phòng thí nghiệm này chứa lỗ hổng path traversal trong việc hiển thị hình ảnh sản phẩm.

Ứng dụng truyền đường dẫn tệp đầy đủ qua tham số yêu cầu và xác thực rằng đường dẫn được cung cấp bắt đầu bằng thư mục mong đợi.

Mục tiêu: Lấy nội dung tệp /etc/passwd

Giải pháp

Trong request hiển trị hình ảnh thì tham số filename bao gồm đường dẫn /var/www/images

Khi thay thê toàn bộ tham số thì sẽ gặp lỗi thiếu tham sô, có thể ứng dụng sẽ kiểm tra xem đường dẫn có bắt đầu bằng thư mục /var/www/images hay không
Giữ nguyên đường dẫn bắt đầu, sử dụng duyệt tuần tự