> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/writeups-ctf/hackthebox/linux-easy/mirai-hackthebox-writeup.md). # Mirai HackTheBox Writeup Mirai HackTheBox Easy Linux machine writeup covering Identifying an IoT device, Forensic file recovery, with practical enumeration, exploitation, foothold, and privilege escalation notes. {% embed url="" %} {% hint style="warning" %} **Skills:** * Identifying an IoT device * Forensic file recovery {% endhint %} ## Reconnaissance **Workspace Setup:** Set up the workspace by creating three folders to store important content, exploits, and Nmap reconnaissance results.

**VPN Connectivity Check** Check VPN connectivity to ensure stable communication with the target machine.

**Open Port Discovery with Nmap:** Enumerate open ports and export the results to the "allPorts" file in the Nmap directory: ```bash nmap -p- --open -sS -n -Pn --min-rate 5000 10.10.10.48 -oG allPorts ```

**Open Port Analysis with extractPorts:** Use the extractPorts function to display open ports in a concise format and copy them to the clipboard (22,53,80,1178,32400,32469)

Port version scan with Nmap: Use Nmap to scan service versions and save the output in the "targeted" file: ```bash nmap -sCV -p22,53,80,1178,32400,32469 10.10.10.48 -oN targeted ```

## Port 80 - Pi-hole When scanning port 80, the Wappalyzer tool does not reveal any significant information.

However, after doing a bit of fuzzing, we discover a directory "`admin`" associated with Pi-hole, containing a login panel.

We then search the Internet for default credentials and find the following information: * **User:** pi * **Password:** raspberry

We are trying to connect via SSH because port 22 is open: ```bash ssh pi@10.10.10.48 ``` The connection is successful.

### Flag user.txt

## **Privilege Escalation :** **Sudo Group:** Checking the user groups, we see that the user "pi" belongs to the sudo group. Since we already know its password, we can gain root privileges. ```bash id ```

Next, we run `sudo su` and enter the password for user "pi": ```bash sudo su ``` ### Flag root.txt **Recovery of the root.txt file:** The attacker informs us that he has lost the `root.txt` file and that we must look for it in a backup on a USB key.

We search for connected USB devices and find a `/dev/sdb` disk ```bash df -h ```

When attempting to read this disc directly, the data is unreadable. However, after using the `strings` command, we are able to recover readable information from the device:

```bash strings /dev/sdb ```

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