Error connecting to a Tryhackme machine via SSH with a private key

[connornguyxn]

Bug Description

Got this error when connecting to TryHackMe's GamingServer room.

pwncat version

└─$ pwncat --version
0.4.3

Target System (aka "victim")

TryHackMe - GamingServer
https://tryhackme.com/room/gamingserver

Steps to Reproduce

Steps to reproduce the behavior:

1. Connect to the box via SSH using a private key:

pwncat -i ssh.key john@gaming.thm

2. Enter the RSA private key passphrase
3. Error:

└─$ pwncat -i ssh.key john@gaming.thm
[14:24:26] Welcome to pwncat 🐈!
RSA Private Key Passphrase: *******                                                                 
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/dist-packages/pwncat-0.4.3-py3.9.egg/pwncat/channel/ssh.py", line 64, in __init__
    key = paramiko.RSAKey.from_private_key(identity)
  File "/usr/lib/python3/dist-packages/paramiko/pkey.py", line 256, in from_private_key
    key = cls(file_obj=file_obj, password=password)
  File "/usr/lib/python3/dist-packages/paramiko/rsakey.py", line 52, in __init__
    self._from_private_key(file_obj, password)
  File "/usr/lib/python3/dist-packages/paramiko/rsakey.py", line 179, in _from_private_key
    data = self._read_private_key("RSA", file_obj, password)
  File "/usr/lib/python3/dist-packages/paramiko/pkey.py", line 334, in _read_private_key
    data = self._read_private_key_pem(lines, end, password)
  File "/usr/lib/python3/dist-packages/paramiko/pkey.py", line 386, in _read_private_key_pem
    raise PasswordRequiredException("Private key file is encrypted")
paramiko.ssh_exception.PasswordRequiredException: Private key file is encrypted

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/pwncat", line 33, in <module>
    sys.exit(load_entry_point('pwncat==0.4.3', 'console_scripts', 'pwncat')())
  File "/usr/local/lib/python3.9/dist-packages/pwncat-0.4.3-py3.9.egg/pwncat/__main__.py", line 272, in main
    manager.create_session(
  File "/usr/local/lib/python3.9/dist-packages/pwncat-0.4.3-py3.9.egg/pwncat/manager.py", line 665, in create_session
    session = Session(self, platform, channel, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/pwncat-0.4.3-py3.9.egg/pwncat/manager.py", line 80, in __init__
    channel = pwncat.channel.create(**kwargs)
  File "/usr/local/lib/python3.9/dist-packages/pwncat-0.4.3-py3.9.egg/pwncat/channel/__init__.py", line 592, in create
    channel = find(prot)(**kwargs)
  File "/usr/local/lib/python3.9/dist-packages/pwncat-0.4.3-py3.9.egg/pwncat/channel/ssh.py", line 68, in __init__
    key = paramiko.RSAKey.from_private_key_file(identity, password)
  File "/usr/lib/python3/dist-packages/paramiko/pkey.py", line 235, in from_private_key_file
    key = cls(filename=filename, password=password)
  File "/usr/lib/python3/dist-packages/paramiko/rsakey.py", line 55, in __init__
    self._from_private_key_file(filename, password)
  File "/usr/lib/python3/dist-packages/paramiko/rsakey.py", line 175, in _from_private_key_file
    data = self._read_private_key_file("RSA", filename, password)
  File "/usr/lib/python3/dist-packages/paramiko/pkey.py", line 307, in _read_private_key_file
    with open(filename, "r") as f:
TypeError: expected str, bytes or os.PathLike object, not TextIOWrapper

Expected Behavior

Pwncat should be able to connect to the machine.
The private key and passphrase are correct and normal SSH works just fine.

Screenshots

Thank you.

[calebstewart]

Apologies for not getting back to you. I've fixed this in the above pull request, and will be merging in a few minutes. I've tested with the mentioned Try hack me machine, and it seems to be working for me. Feel free to reopen or post again if something is still wonky. Thanks!