Challenge list
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…
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…
General SkillsLevel 3★★★☆☆SQL Query Master - Complex Joins
The SQLite database `/challenge/company.db` has 3 tables: - employees (id, name, department_id, salary, email, note) -…
General SkillsLevel 3★★★☆☆System Call Tracing - strace Debugging
Analyze `/challenge/strace.log`, a strace recording of the source-less program `/app/mystery_program`. The program…
General SkillsLevel 3★★★☆☆System Log Analysis - journalctl Master
Analyze `/challenge/system.log`, a systemd journal exported in `journalctl -o short` style. Each line reads "timestamp…
General SkillsLevel 3★★★☆☆Network Master - Netcat Reverse Shell
Analyze the prerecorded artifacts/netcat/callback-transcript.log without connecting to any external host; no listener…
Network SecurityLevel 3★★★☆☆Network Analysis - 802.1Q VLAN Separated Traffic
capture.pcap was captured from a mirrored switch trunk port, so frames from several VLANs are mixed together with…
Network SecurityLevel 3★★★☆☆Network Analysis - SNMP Information Leak
A device speaking SNMPv2c with a weak community string (public) was captured returning a GetResponse. Download the…
Network SecurityLevel 3★★★☆☆Network Analysis - SSL Strip Clear-text Credentials
An SSL Strip attack downgraded HTTPS to HTTP, so the victim's credentials traveled in clear text and were captured.…
Network SecurityLevel 3★★★☆☆Network Analysis - Unmasking WebSocket Frames
capture.pcap records WebSocket traffic between a browser and a chat server. Every client-to-server frame is masked…
Network SecurityLevel 3★★★☆☆Network Analysis - Custom Protocol Decoding
Traffic from a system using a small custom binary protocol was captured. Download the packet capture (traffic.pcap),…
General SkillsLevel 3★★★☆☆Performance Analysis - Find the Resource Hog
Analyze the server snapshot `/challenge/metrics.log`. The first half is a top-style process table (%CPU is column 9,…
CryptographyLevel 3★★★☆☆Cryptanalysis - RSA Common Modulus Attack
Two systems reused the same RSA modulus n and only changed the public exponent. The ciphertexts c1 and c2 of the same…
CryptographyLevel 3★★★☆☆Cryptanalysis - Diffie-Hellman with a Small Prime
An old IoT device performed Diffie-Hellman key exchange with a prime p of only 36 bits. handshake.txt contains p, g, A…
General SkillsLevel 3★★★☆☆Regex Expert - Data Validation
/challenge/data.txt holds 400 contact records. Each line contains an email address, a phone number, an IP address and…
General SkillsLevel 3★★★☆☆Advanced Automation - Directory Monitor
`/challenge/logs/` holds access logs from four web front ends (combined log format, 60 files, over 100k lines). The…