Challenge list
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…
Web SecurityLevel 2★★☆☆☆Web-17. Path Traversal in FileShare
FileShare lets users list and download files from a shared folder. Check whether the filename parameter passed to the…
Web SecurityLevel 2★★☆☆☆Web-18. XXE Attack via a Contact Form
This contact form serializes its input as XML and sends it to the server, which parses it and echoes the result.…
Web SecurityLevel 2★★☆☆☆Web-19. CSRF Transfer in a Banking App
This banking app lets a logged-in user transfer money. Check whether CSRF protections exist by seeing if a separate…
Web SecurityLevel 2★★☆☆☆Web-20. SSRF via the URL Fetcher
This URL Fetcher service retrieves and displays the content of any URL a user provides. Check whether it can be…
General SkillsLevel 2★★☆☆☆Text Processing Master - sed & awk
/app/data.csv contains CSV data. Perform these operations: 1. Extract only rows where column 2 (price) >= 1000 2.…
General SkillsLevel 2★★☆☆☆Process Hunter - Hidden Process
A process named "secret_service" is running in the background. Find this process and get the following information: 1.…
General SkillsLevel 2★★☆☆☆Log Analysis - Find the Intruder
/app/auth.log contains authentication logs. Detect suspicious activity: - Identify the IP address with 10+ failed…
General SkillsLevel 2★★☆☆☆Compression Maze - Nested Archives
/app/flag.tar.gz is a nested compressed file. Decompress step by step: flag.tar.gz → flag.tar → flag.zip.bz2.gz →…
General SkillsLevel 2★★☆☆☆Regex Master - Log File Analysis
The file /app/access.log contains thousands of access log entries. Extract all entries where the IP address starts…
General SkillsLevel 2★★☆☆☆Environment Variable Master - PATH Hijacking
There is a hidden command "getflag" in /app/secret_bin directory. However, this directory is not in PATH, so you…
General SkillsLevel 3★★★☆☆Docker Forensics - Container Investigation
With no Docker daemon available, investigate the metadata of the image `registry.internal/kinoco-billing-api:2.4.1`:…
General SkillsLevel 3★★★☆☆Find the Deleted API Key in Git History
/app/repo is a Git repository. A developer accidentally committed an API_KEY and removed it in a later commit. Inspect…
LinuxLevel 3★★★☆☆Linux-Capabilities. Privilege Escalation Beyond SUID
A specific binary on this system has Linux capabilities assigned to it. Investigate a privilege escalation technique…
LinuxLevel 3★★★☆☆Linux-SUID Exploit. Escalating Privileges via the find Binary
A copy of the find command with the SUID bit set exists on this system. Use a well-known GTFOBins technique to obtain…
LinuxLevel 3★★★☆☆Linux-Proc Memory. Peeking at a Process's Environment
A daemon process runs continuously in the background, with the flag set as one of its environment variables.…
LinuxLevel 3★★★☆☆Linux-Strace. Tracing System Calls to Expose a File
A binary that leaves nothing in standard output or on disk is provided. It reads a key from a hidden file,…
LinuxLevel 3★★★☆☆Linux-Race Condition. Exploiting a TOCTOU Gap for Root Files
A cleanup script that root runs periodically has a gap (TOCTOU) between checking and acting on a file. Try exploiting…
General SkillsLevel 3★★★☆☆Python Automation - REST API Data Collection
A paginated local API runs in the container at `http://127.0.0.1:8000/api/records?page=N`. Walk every page until…