You have access to a Linux system with an additional unmounted drive that contains a hidden flag (a regular file with a secret string inside).
Device names on the diagram are deliberately generic.
Your mission is to:
- Discover the unmounted drive
- Mount it somewhere in the root filesystem
- Capture the flag from the mounted drive
Hint 1: Discovering Block Devices 💡
Before you can mount a drive, you need to know what drives are available on the system.
Use commands like lsblk, fdisk -l, or blkid to list available block devices.
Look for devices that aren't currently mounted (no mount point shown).
Hint 2: Creating Mount Points 💡
To mount a filesystem, you need a mount point - an empty directory where the filesystem will be attached.
Create a directory (commonly under /mnt/ or /media/) using mkdir before mounting.
Hint 3: The Mount Command 💡
The basic syntax for mounting is:
mount /dev/<device> /path/to/mountpoint
For example: mount /dev/sdb /mnt/my-drive
After mounting, you can access the files in the mounted filesystem through the mount point directory.
Hint 4: Finding the Flag 💡
Once the drive is mounted, explore the mounted directory to find the flag file.
Use ls to list files and cat to read file contents.
The flag will be a hexadecimal string (containing only letters a-f and numbers 0-9).