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Canape

Canape - 10.10.10.70
Target Enumeration:
OS: Linux
IP: 10.10.10.70
User: bce918696f293e62b2321703bb27288d
Root: 928c3df1a12d7f67d2e8c2937120976d
Vulnerability Exploited:
Pickle Code Injection
Privilege Escalation:
User allowed to run pip install as root user.
Exploiting the host:
Nmap (used sparta as I was being lazy)
There is a .git repo.
Lots of false positives with the application
.git repo gives us an address to download the source code.
Add git.canape.htb to our /etc/hosts file and clone the repo.
Now we have the source code we can see it is vulnerable to pickle code injection.
Researching the issue lead us to https://lincolnloop.com/blog/playing-pickle-security/​
Although I had several issues with getting the reverse shell and had to look online for a working python exploit.
​https://ironhackers.es/en/writeups/writeup-canape-hackthebox-2/  :)
Execute the code to receive a reverse shell.
Now we have a shell as www-data.
Enumerating the system and looking at the initial git code gave us a potential route
We could see it was listening locally:
Reviewing it gave us a version to check
And searchsploit gave us a potential exploit
This did not work so we kept looking online and found
​https://www.exploit-db.com/exploits/44498/​
Running the following creates a user for us.
We can now grab the passwords
Upgrade to a full tty to su to the user homer (found via passwd file) or login via ssh
Upgrading current shell:
Grab the user flag
We can run pip install as root as the user homer
Move to /dev/shm/ to stop any other files messing around with your shell.
Create the following basic python reverse shell
Copy to the webserver and rename setup,py to work with pip
Setup a nc listener on port 444
Install the file with sudo pip install .
Now you receive a root shell.
Grab the root flag

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Contents

Canape - 10.10.10.70

Target Enumeration:

Vulnerability Exploited:

Privilege Escalation:

Exploiting the host: