script to check every 2 minutes & disconnect internet if client Public IP is different from pre-defined Public IP address

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Release Time

11/02/2023

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2772 times

Update Time

11/19/2024

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Description
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RUN AS LOCALSYSTEM USER

this script will create a batchscript and set it to run every 2 minutes in the system using task schedular. the batchscript will check the internet connection enabled or not, if it is enabled, then it will check the public ip address is same as the predefined ip address. If a difference is detected between the client’s public IP address and given predefined IP address, it will terminate the internet connection

NOTE:

give the pre-defined public IP address in the variable "Predefined_IP

This script has been scanned with virustotal.com and Xcitium verdict cloud.

PYTHON SCRIPT FILE SHA1 VALUE - de5368005087221973b092a084cbd7fe20ef36be

JSON FILE SHA1 VALUE - f5a414b21a52b6dd6331862dc937486fa33ffd28

Procedure's Instructions

Predefined_IP = r"21.***.**.**" #give here the predefined Public IP address

import subprocess
import os
import ctypes

class DisableFileSystemRedirection:
    _disable = ctypes.windll.kernel32.Wow64DisableWow64FsRedirection
    _revert = ctypes.windll.kernel32.Wow64RevertWow64FsRedirection
    
    def __enter__(self):
        self.old_value = ctypes.c_long()
        self.success = self._disable(ctypes.byref(self.old_value))
    
    def __exit__(self, type, value, traceback):
        if self.success:
            self._revert(self.old_value)

BatchScript = r"""
@echo off
Ping www.google.nl -n 1 -w 1000
IF %ERRORLEVEL% EQU 0 (
    GOTO disconnect
) ELSE (
    GOTO END
)

:disconnect
set PredefinedIP="""+Predefined_IP+r"""
FOR /F "tokens=*" %%g IN ('curl "http://myexternalip.com/raw"') do (SET PIP=%%g)
if %PIP%==%PredefinedIP% (GOTO END) else (ipconfig /release)

:END
"""

task_name = 'disconnect_ip_cycle'
batch_script_path = os.path.join(os.environ["PROGRAMDATA"], "disconnect.bat")

with open(batch_script_path, "w") as f:
    f.write(BatchScript)

with DisableFileSystemRedirection():
    task_cmd = 'schtasks /ru "SYSTEM" /create /sc minute /mo 2 /tn "{}" /tr "{}" /rl HIGHEST /f'.format(task_name, batch_script_path)
    process = subprocess.Popen(task_cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    stdout, stderr = process.communicate()
    ret = process.returncode

if ret == 0:
    if stdout:
        print("Scheduled task creation output:", stdout.decode('utf-8').strip())
    else:
        print("Scheduled task created successfully.")
else:
    if stderr:
        print("Error creating scheduled task:", stderr.decode('utf-8').strip())
    else:
        print("An error occurred while creating the scheduled task.")

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script to check every 2 minutes & disconnect internet if client Public IP is different from pre-defined Public IP address

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