Challenge list
ProgrammingLevel 2★★☆☆☆API Requests - Find the Highest-Profit Trade
When the container starts, a stock API begins running on http://localhost:9102 (you do not need to start server.py).…
General SkillsLevel 2★★☆☆☆Bash Scripting - Power of Automation
/app/numbers.txt contains numbers from 1 to 1000, one per line. Extract all numbers that satisfy these conditions and…
General SkillsLevel 2★★☆☆☆Git Detective - Lost Commit
/app/repo is a Git repository. A developer accidentally deleted a commit containing important information. Use git…
General SkillsLevel 2★★☆☆☆JSON Master - Data Extraction
/app/users.json contains information of 100 users in JSON format. Extract users that meet these conditions: - age…
General SkillsLevel 2★★☆☆☆OSINT Basics - Metadata Analysis
Files recovered from a departed employee's shared drive (photos `IMG_*.jpg` and Office documents) are in…
ProgrammingLevel 2★★☆☆☆Python Practice - Bulk Base64 Stream Decoding
Every line of data.txt (about 150 lines, created at every start) is Base64. Decode line by line; when the result…
ProgrammingLevel 2★★☆☆☆Python Practice - Conditional CSV Sales Filtering
data.txt, created at every start, is a sales CSV (transaction_id,date,product_id,amount,status,ref,notes). Several…
ProgrammingLevel 2★★☆☆☆Python Practice - Compound JSON User Query
Examine the JSON data.txt ({"users": [...]}) created at every start. Each user has id, name, email, role, active and…
ProgrammingLevel 2★★☆☆☆Python Practice - Target-IP Access Log Tracing
data.txt (about 1,300 lines, created at every start) is a web server access log. Extract only the requests from…
ProgrammingLevel 2★★☆☆☆Python Automation - Bulk Base64 Decoding
Every line of data.txt (about 150 lines, created at every start) is Base64. Decode line by line; when the result…
ProgrammingLevel 2★★☆☆☆Python Automation - CSV Sales Filtering
data.txt, created at every start, is a sales CSV (transaction_id,date,product_id,amount,status,ref,notes). Several…
ProgrammingLevel 2★★☆☆☆Python Automation - JSON User Query
Examine the JSON data.txt ({"users": [...]}) created at every start. Each user has id, name, email, role, active and…
ProgrammingLevel 2★★☆☆☆Python Automation - Access Log Parsing
data.txt (about 1,300 lines, created at every start) is a web server access log. Extract only the requests from…
ProgrammingLevel 2★★☆☆☆Python Automation - Password Hash Cracking
Examine data.txt (a list of SHA-256 digests) and wordlist.txt (800 four-character lowercase alphanumeric tokens), both…
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.…
ProgrammingLevel 2★★☆☆☆Programming - Bash Job Log Analysis
/challenge/jobs.log is a nightly batch log that is regenerated with random data every time the container starts. Each…
ProgrammingLevel 2★★☆☆☆Programming - PIN Brute Force
/challenge/vault.json is a vault record that is regenerated with random data every time the container starts. It…
ProgrammingLevel 2★★☆☆☆Programming - Hash Verification and Decryption
Analyze the evidence file artifact-manifest.json, which is generated randomly at every start. Each artifact…
ProgrammingLevel 2★★☆☆☆Programming - Binary TLV Parsing
/challenge/capture.bin is a custom binary file that is regenerated with random data every time the container starts.…
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 →…
ProgrammingLevel 2★★☆☆☆Regular Expressions - The One-Time Golden Glyph
Extract every KINO-four-digits-four-uppercase glyph from data.txt, identify the one occurring once, and submit it to…
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…