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10 challenges

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`.…

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…

Digital ForensicsLevel 5★★★★★

Extract VM Information from Hypervisor Memory

Analyze the KVM host memory dump `/home/ctfuser/evidence/kvm_host.dump`. The guests are configured like AMD SEV, so…

Digital ForensicsLevel 5★★★★★

Detect Process Hollowing Attack

From the memory of a Windows host, the process list `process_list.txt` (the PEB view), the VAD list `vad_regions.txt`…

Digital ForensicsLevel 5★★★★★

Detect Tampered Timestamps

`/challenge/mft_timeline.csv` is a timeline exported from the NTFS `$MFT`. It has the `$STANDARD_INFORMATION` (SI) and…

Digital ForensicsLevel 5★★★★★

Decrypt Encrypted iOS Backup

Verify the password of an encrypted iOS backup with a safe iTunes metadata fixture. No real iPhone or backup is used.…

Digital ForensicsLevel 5★★★★★

Create Memory Profile for Unknown Linux Kernel

Analyze `/home/ctfuser/evidence/custom_kernel.dump`, part of the physical memory of a server running an in-house…

Digital ForensicsLevel 5★★★★★

Decode Custom Protocol C&C Communication

The egress proxy recorded the traffic of the compromised endpoint 10.20.4.88. In `/challenge/beacon.log`, each line is…