Challenge list
ProgrammingLevel 4★★★★☆Programming - Buffer Overflow Crash Analysis
Analyze the crash reports crash_01.txt to crash_06.txt, which are generated randomly at every start (they contain no…
ProgrammingLevel 4★★★★☆Programming - Fuzzing Result Analysis
Analyze the fuzzing result log fuzz-results.log, which is generated randomly at every start (inputs are merely stored;…
ProgrammingLevel 4★★★★☆Programming - Blockchain Event Reassembly
/challenge/blocks.json is a list of blocks from an offline development chain, regenerated with random data every time…
ProgrammingLevel 4★★★★☆Programming - Rootkit View Diffing
proc_ps.txt (the userland ps output) and proc_kernel.txt (the result of walking the kernel task list directly) are…
ProgrammingLevel 4★★★★☆Programming - Anomaly Detection
/challenge/requests.csv is a web API access log that is regenerated with random data every time the container starts…
ProgrammingLevel 4★★★★☆Programming - Pentest Finding Analysis
findings.json is a scan result built from random data at every start (in /challenge). It has entry (edge-gw),…
ProgrammingLevel 4★★★★☆Programming - Async Scan Result Analysis
/challenge/scan-events.jsonl is the event log of an asynchronous port scanner, regenerated with random data every time…
Digital ForensicsLevel 4★★★★☆Extract Malware Payload from Memory
`/challenge/memstrings.txt` holds the strings extracted from the address space of a suspicious process, and the…
Digital ForensicsLevel 4★★★★☆Detect Hidden Kernel Module in Memory
From the memory of a Linux host suspected of an LKM rootkit infection, three sets of module information were…
Digital ForensicsLevel 4★★★★☆Decode Multi-Stage Steganography
Three stages of steganography are planted in `/challenge/cover.png` and `/challenge/notes.txt`. Each stage holds the…
Digital ForensicsLevel 4★★★★☆Recover Fragmented JPEG File
`/challenge/fragments/` holds 256-byte clusters (`clus_NNNN.bin`) recovered from the unallocated space of a memory…
General SkillsLevel 4★★★★☆Encrypted Communication - GPG Public Key Cryptography
Practice GnuPG decryption. Import every private key under `/challenge/keys/` and decrypt each ciphertext under…
Digital ForensicsLevel 4★★★★☆Recover Damaged RAID5 Array
The RAID5 array `/dev/md0` (4 members) on the file server fs01 no longer assembles after the member sdd failed.…
General SkillsLevel 4★★★★☆Vulnerability Scanning - Advanced Nmap NSE
The results of running `nmap -sV -sC --script vuln` against the internal subnet `10.66.13.0/24` are in…
Digital ForensicsLevel 4★★★★☆Reconstruct Attack Scenario from Multiple Logs
`/challenge/web.log`, `/challenge/auth.log` and `/challenge/db.log` record the same intrusion among a lot of…
General SkillsLevel 4★★★★☆Static Analysis - Code Vulnerability Scanning
The Python source of an internal notes app is in `/challenge/src/`. The nine lines flagged by an earlier…
General SkillsLevel 5★★★★★APT Simulation - Full Breach Scenario
This is not an attack exercise but a blue-team task of reading the logs of an incident that already happened. From the…
Digital ForensicsLevel 5★★★★★Reconstruct Full APT Attack Stages
Four logs, `/challenge/edr_process.log`, `proxy_http.log`, `dns_queries.log` and `dlp_transfer.log`, hold an APT…
Digital ForensicsLevel 5★★★★★Crack BitLocker Encrypted Drive
Learn BitLocker recovery-key verification with a safe metadata fixture. bitlocker.img is not a real volume. Identify…
Digital ForensicsLevel 5★★★★★Extract Message Hidden in Bitcoin Transaction
The victim paid the ransom to the Bitcoin address `bc1qr4nsmw4r3pay7hzfx0d9cq3vkt8e6m5ljgs2ua`.…
General SkillsLevel 5★★★★★Bug Bounty Practice - Vulnerability Discovery Master
Analyze the fixed artifacts/bug-bounty/triage-report.json instead of testing a live application. A chained report has…
Digital ForensicsLevel 5★★★★★Extract Secret Key from IoT Device Firmware
Analyze the update file `/home/ctfuser/evidence/firmware.bin` of the network camera KNC-CAM-2000 (do not connect to a…
ProgrammingLevel 5★★★★★Advanced Python - Concurrent Event DAG Correlation
events.jsonl interleaves randomly ordered events from many services and traces. Starting from the marked auth.failed…
General SkillsLevel 5★★★★★Red Teaming - Custom C2 Framework
No C2 server, agent, socket communication, or command execution is started. Analyze the local…