NEKO

netcat

2017/12/15
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# -*- coding:utf-8 -*-
import sys
import socket
import getopt
import threading
import subprocess

listen = False
command = False
upload = False
detail = False
execute = ""
target = ""
upload_destination= ""
port = 0

def usage():

print "Usage: netcat.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 commandshell"
print "-u --upload=destination - upon receiving connection upload a file and write to [destination]"
sys.exit(0)

def main():
global listen
global port
global execute
global detail
global command
global upload_destination
global target

#若无参数,弹出帮助手册
if not len(sys.argv[1:]):
usage()

#读取命令参数
try:
opts,args=getopt.getopt(sys.argv[1:],"hlde:t:p:cu:",["help","detail","listen","execute","target","port","command","upload"])

except getopt.GetoptError as e:
print str(e)
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)
elif o in ("-d","--detail"):
detail=True
else:
assert False,"Unhandled Option"

if not listen and len(target) and port>0:

buffer=sys.stdin.read()
client_sender(buffer)
print 1
if listen:
server_loop()

def client_sender(buffer):
client=socket.socket(socket.AF_INET,socket.SOCK_STREAM)

try:
client.connect((target,port))

if len(buffer):

client.send(buffer)
print 1
while True:
recv_len=1
response= ""
while recv_len:

data=client.recv(4096)

recv_len=len(data)

response+=data

if recv_len<4096:
break

print response,
buffer=raw_input()+"\n"
client.send(buffer)

except:
print "[*] Exception! Exiting"

client.close()

def server_loop():
global target
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()

client_thread=threading.Thread(target=client_handler,args=(client_socket,))
client_thread.start()

#命令执行
def run_command(command):
#删除末尾空格
command=command.rstrip()
#运行命令并将结果返回到output
try:
output=subprocess.check_output(command,stderr=subprocess.STDOUT,shell=True)
except:
output="Failed to execute command.\r\n"
return output
def client_handler(client_socket):
global upload
global execute
global command
global detail

#打印传输数据的byte数及值
if detail:
recv_buffer=""
while True:
data=client_socket.recv(1024)
if len(data):
recv_buffer+=data
else:
break
print "收到%sbyte的数据:%s"%(len(recv_buffer),recv_buffer)

if len(upload_destination):
file_buffer=""
#读取所有数据存储到file_buffer中
while True:
data=client_socket.recv(1024)
if len(data):
file_buffer+=data
else:
break
#写入文件
try:
file_descriptor=open(upload_destination,"wb")
file_descriptor.write(file_buffer)
file_descriptor.close()

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)

# 是否命令执行
if len(execute):
output=run_command(execute)
client_socket.send(output)

# 是否需要shell
if command:
while True:
client_socket.send("<neko:#>")
cmd_buffer=""
while "\n" not in cmd_buffer:
cmd_buffer+=client_socket.recv(1024)
response=run_command(cmd_buffer)
client_socket.send(response)

if __name__=="__main__":
main()

原文作者: n3k0

发表日期: December 15th 2017, 11:45:31

发出嘶吼: 没有魔夜2玩我要死了

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