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|
local math = require "math"
local nmap = require "nmap"
local packet = require "packet"
local stdnse = require "stdnse"
local string = require "string"
local table = require "table"
description = [[
Discovers servers supporting the ATA over Ethernet protocol. ATA over Ethernet
is an ethernet protocol developed by the Brantley Coile Company and allows for
simple, high-performance access to SATA drives over Ethernet.
Discovery is performed by sending a Query Config Request to the Ethernet
broadcast address with all bits set in the major and minor fields of the
header.
]]
---
-- @usage
-- nmap --script broadcast-ataoe-discover -e <interface>
--
-- @output
-- Pre-scan script results:
-- | broadcast-ataoe-discover:
-- |_ Server: 08:00:27:12:34:56; Version: 1; Major: 0; Minor: 1
--
author = "Patrik Karlsson"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"broadcast", "safe"}
prerule = function() return true end
-- The minimalistic ATAoE interface
ATAoE = {
-- Supported commands
Cmd = {
QUERY_CONFIG_INFORMATION = 1,
},
Header = {
-- creates a new Header instance
new = function(self, cmd, tag)
local o = {
version = 1,
flags = 0,
major = 0xffff,
minor = 0xff,
error = 0,
cmd = ATAoE.Cmd.QUERY_CONFIG_INFORMATION,
tag = tag or math.random(0,0xffffffff),
}
setmetatable(o, self)
self.__index = self
return o
end,
-- parses a raw string of data and creates a new Header instance
-- @return header new instance of header
parse = function(data)
local header = ATAoE.Header:new()
local pos, verflags
verflags, header.error,
header.major, header.minor,
header.cmd, header.tag, pos = string.unpack(">BBI2BBI4", data)
header.version = verflags >> 4
header.flags = verflags & 0x0F
return header
end,
-- return configuration info request as string
__tostring = function(self)
assert(self.tag, "No tag was specified in Config Info Request")
local verflags = self.version << 4
return string.pack(">BBI2BBI4", verflags, self.error, self.major, self.minor, self.cmd, self.tag)
end,
},
-- The Configuration Info Request
ConfigInfoRequest = {
new = function(self, tag)
local o = {
header = ATAoE.Header:new(ATAoE.Cmd.QUERY_CONFIG_INFORMATION, tag)
}
setmetatable(o, self)
self.__index = self
return o
end,
__tostring = function(self)
return tostring(self.header)
end,
}
}
-- Send a Config Info Request to the ethernet broadcast address
-- @param iface table as returned by nmap.get_interface_info()
local function sendConfigInfoRequest(iface)
local ETHER_BROADCAST, P_ATAOE = "ff:ff:ff:ff:ff:ff", 0x88a2
local req = ATAoE.ConfigInfoRequest:new()
local tag = req.tag
local p = packet.Frame:new()
p.mac_src = iface.mac
p.mac_dst = packet.mactobin(ETHER_BROADCAST)
p.ether_type = string.pack(">I2", P_ATAOE)
p.buf = tostring(req)
p:build_ether_frame()
local dnet = nmap.new_dnet()
dnet:ethernet_open(iface.device)
dnet:ethernet_send(p.frame_buf)
dnet:ethernet_close()
end
action = function()
local iname = nmap.get_interface()
if ( not(iname) ) then
stdnse.verbose1("No interface supplied, use -e")
return
end
if ( not(nmap.is_privileged()) ) then
stdnse.verbose1("not running for lack of privileges")
return
end
local iface = nmap.get_interface_info(iname)
if ( not(iface) ) then
return stdnse.format_output(false, "Failed to retrieve interface information")
end
local pcap = nmap.new_socket()
pcap:set_timeout(5000)
pcap:pcap_open(iface.device, 1500, true, "ether proto 0x88a2 && !ether src " .. stdnse.format_mac(iface.mac))
sendConfigInfoRequest(iface)
local result = {}
repeat
local status, len, l2_data, l3_data = pcap:pcap_receive()
if ( status ) then
local header = ATAoE.Header.parse(l3_data)
local f = packet.Frame:new(l2_data)
f:ether_parse()
local str = ("Server: %s; Version: %d; Major: %d; Minor: %d"):format(
stdnse.format_mac(f.mac_src),
header.version,
header.major,
header.minor)
table.insert(result, str)
end
until( not(status) )
pcap:pcap_close()
if ( #result > 0 ) then
return stdnse.format_output(true, result)
end
end
|
