Challenge list
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…
Digital ForensicsLevel 3★★★☆☆Find Deleted File Traces in NTFS $MFT
You are given `/challenge/mft_records.txt`, the `$MFT` of the Windows machine `KINOCO-WS07` written out as per-record…
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) -…
Digital ForensicsLevel 3★★★☆☆Detect Brute-Force Attack in Event Logs
Analyze the sshd authentication log `/challenge/auth.log` of the server `kinoco-srv01` and identify the session of the…
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…
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,…
Digital ForensicsLevel 3★★★☆☆Find Suspicious Network Connections in Memory
From the memory image of the compromised host `kinoco-app03`, the socket table `/challenge/netstat_dump.txt` and the…
Digital ForensicsLevel 3★★★☆☆Recover Executed Commands from Memory
Analyze the memory-string record `memdump.txt` to recover the executed command history. Decode the Base64 strings and…
Digital ForensicsLevel 3★★★☆☆Recover Deleted SQLite Records
You are given the SQLite database `/challenge/app.db` of the internal chat tool "kinoco-msg". The body of a message…
Digital ForensicsLevel 3★★★☆☆Decompress Multi-Layer Archive
`/challenge/artifact.xz` is a file an attacker tried to take out, wrapped many times in gzip, bzip2, xz, zip and tar.…
Digital ForensicsLevel 3★★★☆☆Decrypt Encrypted Disk
`/challenge/secret_disk.img` is a genuine LUKS2 container. Its data area holds a backup (a tar archive). The…
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…
Digital ForensicsLevel 3★★★☆☆Data Hidden in Audio File
`hidden.wav` hides a message encoded with on-off keying (OOK). Turn the tone on/off slots into bits and decode them to…
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…