Challenge list
Web SecurityLevel 1★☆☆☆☆05. HTML Source Code Secret
Web pages contain a lot of information that isn't visible on the surface. Looking at HTML source code, you can often…
Web SecurityLevel 1★☆☆☆☆06. JavaScript Password Check
This page has a password-protected area. However, because the password check is done in JavaScript, you can find the…
Web SecurityLevel 1★☆☆☆☆07. Peek at Cookies
Websites use a mechanism called cookies to store information in your browser. They're used for managing login states,…
Digital ForensicsLevel 1★☆☆☆☆12. Identify File Signatures
Files contain identification information called "magic bytes" at the beginning. Even if the extension is disguised,…
Digital ForensicsLevel 1★☆☆☆☆13. Hidden Metadata in Images
Photos and images contain metadata called EXIF. This metadata records shooting date, camera info, GPS coordinates,…
Digital ForensicsLevel 1★☆☆☆☆15. Extract Strings from Binary
Binary files (executables, etc.) contain human-readable strings. Passwords, URLs, error messages, and other hints can…
Web SecurityLevel 1★☆☆☆☆SQL Injection 101
This login form has an SQL Injection vulnerability. Log in as admin without proper credentials and retrieve the flag.
Web SecurityLevel 1★☆☆☆☆Web-04. The robots.txt Trap
Websites often serve a robots.txt file for crawlers. In this challenge, check whether a file that robots.txt tells…
Web SecurityLevel 1★☆☆☆☆Web-05. Directory Listing Trap
When an Nginx server has directory index listing (autoindex) enabled, anyone can browse the full file listing of a…
Web SecurityLevel 1★☆☆☆☆Web-06. Forging HTTP Headers
This application grants access based on the value of a specific HTTP header. Even values the browser never sends by…
Web SecurityLevel 1★☆☆☆☆Web-07. Tampering with URL Parameters
This web application checks the value of the GET parameter key on the server side. The required parameter name and…
Web SecurityLevel 1★☆☆☆☆Web-08. Tampering with POST Data
The login form contains a hidden input field that is invisible in the rendered page. Inspect it with developer tools…
Web SecurityLevel 1★☆☆☆☆Web-09. The Weak Basic Auth Trap
A protected area is guarded by HTTP Basic Authentication, but the developer accidentally left the credentials in an…
Web SecurityLevel 1★☆☆☆☆Web-10. Peeking Behind a Redirect
Accessing a certain page immediately redirects you elsewhere. Browsers automatically follow redirects, so think about…
Web SecurityLevel 1★☆☆☆☆XSS Basics - Guestbook
This web application has a basic XSS vulnerability. Find where input is reflected in the guestbook. The flag is at an…
Digital ForensicsLevel 2★★☆☆☆Find Attack in Apache Logs
Analyze the Apache access.log (common format) to find traces of SQL injection. Tell which attacks succeeded and which…
Digital ForensicsLevel 2★★☆☆☆Flag Hidden in Excel Macro
Analyze the macro code embedded in the Excel workbook and find the hidden authentication code (the flag). Learn how to…
Digital ForensicsLevel 2★★☆☆☆Hidden PDF Streams
The PDF file contains compressed object streams. An internal note that is not shown on the page is hidden inside them.…
Web SecurityLevel 2★★☆☆☆Web-11. SQL Injection into the Employee Portal
KinoGadget's internal "Employee Access Portal" runs on a legacy authentication system. The lead developer is rumored…
Web SecurityLevel 2★★☆☆☆Web-12. Reflected XSS in BlogSearch
BlogSearch is a simple search engine for blog articles. The search query is embedded into the results page as-is…
Web SecurityLevel 2★★☆☆☆Web-13. Bypassing File Upload Checks in ImageVault
ImageVault is an image hosting service that accepts JPG, PNG, and GIF uploads. If its validation only checks the end…
Web SecurityLevel 2★★☆☆☆Web-14. Command Injection in a Network Diagnostic Tool
This app is a diagnostic tool that runs ping against a host you supply. If the host input is passed straight into a…
Web SecurityLevel 2★★☆☆☆Web-15. IDOR in the UserProfile Service
The UserProfile Service exposes an API that returns profile information for a given user ID. Check whether the service…
Web SecurityLevel 2★★☆☆☆Web-16. Weak JWT Secret in the CHIMERA Research Lab
Clues found after breaching the employee portal point to an isolated research lab system codenamed CHIMERA. It…