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iceman1001iceman1001
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ADD: added the writedumpfile function from "14araw.lua" into utils.lua
ADD: `ufodump.lua` - added the Aztek dump script. Since its an unknown tag hence the name.
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lines changed

‎client/lualibs/utils.lua‎

Lines changed: 36 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -53,6 +53,34 @@ local Utils =
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return hex
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end,
5555

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------------ FILE WRITING (EML)
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--- Writes an eml-file.
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-- @param uid - the uid of the tag. Used in filename
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-- @param blockData. Assumed to be on the format {'\0\1\2\3,'\b\e\e\f' ...,
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-- that is, blockData[row] contains a string with the actual data, not ascii hex representation
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-- return filename if all went well,
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-- @reurn nil, error message if unsuccessfulls
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WriteDumpFile = function(uid, blockData)
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local destination = string.format("%s.eml", uid)
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local file = io.open(destination, "w")
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if file == nil then
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return nil, string.format("Could not write to file %s", destination)
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end
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local rowlen = string.len(blockData[1])
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for i,block in ipairs(blockData) do
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if rowlen ~= string.len(block) then
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prlog(string.format("WARNING: Dumpdata seems corrupted, line %d was not the same length as line 1",i))
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end
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local formatString = string.format("H%d", string.len(block))
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local _,hex = bin.unpack(formatString,block)
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file:write(hex.."\n")
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end
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file:close()
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return destination
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end,
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------------ string split function
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Split = function( inSplitPattern, outResults )
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if not outResults then
@@ -262,7 +290,14 @@ local Utils =
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if #s == 0 then return '' end
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local t={}
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for k in s:gmatch"(%x%x)" do
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table.insert(t, string.char(tonumber(k,16)))
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local n = tonumber(k,16)
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local c
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if (n < 32) or (n == 127) then
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c = '.';
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else
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c = string.char(n)
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end
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table.insert(t,c)
266301
end
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return table.concat(t)
268303
end,

‎client/scripts/ufodump.lua‎

Lines changed: 181 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,181 @@
1+
local cmds = require('commands')
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local getopt = require('getopt')
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local lib14a = require('read14a')
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local utils = require('utils')
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example = [[
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script run ufodump
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script run ufodump -b 10
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]]
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author = "Iceman"
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desc =
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[[
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This is a script that reads AZTEK iso14443a tags.
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It starts from block 0, and ends at default block 20. Use 'b' to say different endblock.
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xor: the first three block (0,1,2) is not XORED. The rest seems to be xored.
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Arguments:
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h this helptext
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b endblock in decimal (1-255, default 20)
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]]
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-- Some globals
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local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds
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local DEBUG = false -- the debug flag
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---
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-- A debug printout-function
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function dbg(args)
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if DEBUG then
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print("###", args)
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end
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end
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---
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-- This is only meant to be used when errors occur
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function oops(err)
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print("ERROR: ",err)
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core.clearCommandBuffer()
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end
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---
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-- Usage help
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function help()
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print(desc)
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print("Example usage")
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print(example)
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end
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--
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-- writes data to ascii textfile.
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function writeDumpFile(uid, blockData)
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local destination = string.format("%s.eml", uid)
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local file = io.open(destination, "w")
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if file == nil then
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return nil, string.format("Could not write to file %s", destination)
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end
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local rowlen = string.len(blockData[1])
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for i,block in ipairs(blockData) do
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if rowlen ~= string.len(block) then
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print(string.format("WARNING: Dumpdata seems corrupted, line %d was not the same length as line 1",i))
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end
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file:write(block.."\n")
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end
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file:close()
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return destination
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end
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--
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--- Picks out and displays the data read from a tag
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-- Specifically, takes a usb packet, converts to a Command
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-- (as in commands.lua), takes the data-array and
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-- reads the number of bytes specified in arg1 (arg0 in c-struct)
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-- and displays the data
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-- @blockno just to print which block the data belong to
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-- @param usbpacket the data received from the device
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function showdata(blockno, data)
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local xorkey = '55AA55AA55AA55AA6262'
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--local s = data.." | "..utils.ConvertHexToAscii(data).." | "
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local s = data.." | "
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local dex = ''
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local rs
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for i = 1, 20-4, 4 do
79+
local item = string.sub(data, i, i+3)
80+
local xor = string.sub(xorkey, i, i+3)
81+
82+
if blockno > 2 then
83+
rs = bit32.bxor(tonumber(item,16) , tonumber(xor,16))
84+
else
85+
rs = tonumber(item, 16)
86+
end
87+
dex = (dex..'%04X'):format(rs)
88+
end
89+
--s = s..dex.." | "..utils.ConvertHexToAscii(dex)
90+
s = s..dex.." | "
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print( (" %02d | %s"):format(blockno,s))
92+
end
93+
--
94+
-- Send a "raw" iso14443a package, ie "hf 14a raw" command
95+
function sendRaw(rawdata, options)
96+
--print(">> ", rawdata)
97+
local flags = lib14a.ISO14A_COMMAND.ISO14A_NO_DISCONNECT + lib14a.ISO14A_COMMAND.ISO14A_RAW + lib14a.ISO14A_COMMAND.ISO14A_APPEND_CRC
98+
local command = Command:new{cmd = cmds.CMD_READER_ISO_14443a,
99+
arg1 = flags, -- Send raw
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-- arg2 contains the length, which is half the length
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-- of the ASCII-string rawdata
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arg2 = string.len(rawdata)/2,
103+
data = rawdata}
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return lib14a.sendToDevice(command, options.ignore_response)
105+
end
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--
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-- Sends an instruction to do nothing, only disconnect
108+
function disconnect()
109+
local command = Command:new{cmd = cmds.CMD_READER_ISO_14443a, arg1 = 0, }
110+
-- We can ignore the response here, no ACK is returned for this command
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-- Check /armsrc/iso14443a.c, ReaderIso14443a() for details
112+
return lib14a.sendToDevice(command, true)
113+
--core.console("hf 14a raw -r")
114+
end
115+
---
116+
-- The main entry point
117+
function main(args)
118+
119+
local ignore_response = false
120+
local endblock = 20
121+
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-- Read the parameters
123+
for o, a in getopt.getopt(args, 'hb:') do
124+
if o == "h" then return help() end
125+
if o == "b" then endblock = a end
126+
end
127+
endblock = endblock or 20
128+
129+
-- First of all, connect
130+
info, err = lib14a.read1443a(true)
131+
if err then disconnect() return oops(err) end
132+
core.clearCommandBuffer()
133+
134+
local blockData = {}
135+
136+
-- Show tag info
137+
print(("\nFound Card UID [%s]\n"):format(info.uid))
138+
139+
print("blk | data | xored")
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print("----+------------------+-------------------")
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for block = 00, endblock do
142+
local cmd = string.format("10%02x00", block)
143+
res, err = sendRaw(cmd , {ignore_response = ignore_response})
144+
if err then disconnect() return oops(err) end
145+
146+
local cmd_response = Command.parse(res)
147+
local len = tonumber(cmd_response.arg1) * 2
148+
local data = string.sub(tostring(cmd_response.data), 0, len-4)
149+
150+
showdata(block, data)
151+
table.insert(blockData, data)
152+
end
153+
print("----+------------------+-------------------")
154+
disconnect()
155+
156+
local filename, err = writeDumpFile(info.uid, blockData)
157+
if err then return oops(err) end
158+
159+
print(string.format("\nDumped data into %s", filename))
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end
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-------------------------
166+
-- Testing
167+
-------------------------
168+
function selftest()
169+
DEBUG = true
170+
dbg("Performing test")
171+
main()
172+
dbg("Tests done")
173+
end
174+
-- Flip the switch here to perform a sanity check.
175+
-- It read a nonce in two different ways, as specified in the usage-section
176+
if "--test"==args then
177+
selftest()
178+
else
179+
-- Call the main
180+
main(args)
181+
end

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