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TryHackMe/h4cked.md
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TryHackMe/h4cked.md
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# TryHackMe- H4cked
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## Oh no! We've been hacked!
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Download the pacp file we are given , on opening the `.pcap` file we can see a lot of traffic
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<img src="https://imgur.com/aL3glwA.png"/>
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At the starting we can see that a number of times connection to port 21 is being made which is a port for `FTP`.
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If we follow the tcp stream for port 21 we can see the username and the password the attacker is trying
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<img src="https://imgur.com/Ixqqqaf.png"/>
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Here username is `jenny` , changing the stream we will find the password is brute forced
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<img src="https://imgur.com/b9xLb4n.png"/>
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<img src="https://imgur.com/628EZPw.png"/>
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Here we can see that attacker uploaded a backdoor `shell.php` in `/var/www/html`
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<img src="https://imgur.com/cRIF7tz.png"/>
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<img src="https://imgur.com/XovV9Mn.png"/>
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Here we can see once the attacker gain access he stabilizes the shell , switches to user jenny and since that user can run any command as sudo he escalates to root and to gain persistance intalls `reptile` rootkit
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## Tasks
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1. The attacker is trying to log into a specific service. What service is this?
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`FTP`
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2. There is a very popular tool by Van Hauser which can be used to brute force a series of services. What is the name of this tool?
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`hydra`
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3. The attacker is trying to log on with a specific username. What is the username?
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`jenny`
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4. What is the user's password?
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`password123`
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5. What is the current FTP working directory after the attacker logged in?
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`/var/www/html`
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6. The attacker uploaded a backdoor. What is the backdoor's filename?
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`shell.php`
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7. The backdoor can be downloaded from a specific URL, as it is located inside the uploaded file. What is the full URL?
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`http://pentestmonkey.net/tools/php-reverse-shell`
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8. Which command did the attacker manually execute after getting a reverse shell?
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What is the computer's hostname?
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`whoami`
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9. Which command did the attacker execute to spawn a new TTY shell?
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`python3 -c 'import pty;pty.spawn("/bin/bash")'`
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10. Which command was executed to gain a root shell?
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`sudo su `
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11. The attacker downloaded something from GitHub. What is the name of the GitHub project?
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`Reptile`
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12. The project can be used to install a stealthy backdoor on the system. It can be very hard to detect. What is this type of backdoor called?
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`rootkit`
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13. What is the computer's hostname ?
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`wir3`
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## Rustscan
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```bash
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PORT STATE SERVICE REASON VERSION [25/685]
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21/tcp open ftp syn-ack ttl 63 vsftpd 2.0.8 or later
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80/tcp open http syn-ack ttl 63 Apache httpd 2.4.29 ((Ubuntu))
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| http-methods:
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|_ Supported Methods: GET POST OPTIONS HEAD
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|_http-server-header: Apache/2.4.29 (Ubuntu)
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|_http-title: Apache2 Ubuntu Default Page: It works
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Warning: OSScan results may be unreliable because we could not find at least 1 open and 1 closed port
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```
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## Hydra
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<img src="https://imgur.com/Bcm5NZD.png"/>
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<img src="https://imgur.com/O5HHz1b.png"/>
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We got the password now let's login to ftp server
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<img src="https://imgur.com/8P9RMfj.png"/>
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Here after logging I uploaded a php interactive shell and gave permissions to execute
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<img src="https://imgur.com/HrrIHz6.png"/>
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Gain a shell through BSD netcat and stabilize it using python3
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<img src="https://imgur.com/3LdPEb5.png"/>
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Switch to user jenny with the password you brute forced
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<img src="https://imgur.com/ABXPU2t.png"/>
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<img src="https://imgur.com/BuFXMed.png"/>
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