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[proxmark3-svn] / client / scripts / ufodump.lua
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1cec48cc 1local cmds = require('commands')
2local getopt = require('getopt')
3local lib14a = require('read14a')
4local utils = require('utils')
5example = [[
6 script run ufodump
7 script run ufodump -b 10
8]]
9author = "Iceman"
10desc =
11[[
12This is a script that reads AZTEK iso14443a tags.
13It starts from block 0, and ends at default block 20. Use 'b' to say different endblock.
14
15xor: the first three block (0,1,2) is not XORED. The rest seems to be xored.
16
17Arguments:
18 h this helptext
19 b endblock in decimal (1-255, default 20)
20]]
21
22-- Some globals
23local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds
24local DEBUG = false -- the debug flag
25---
26-- A debug printout-function
27function dbg(args)
28 if DEBUG then
29 print("###", args)
30 end
31end
32---
33-- This is only meant to be used when errors occur
34function oops(err)
35 print("ERROR: ",err)
36 core.clearCommandBuffer()
37end
38---
39-- Usage help
40function help()
41 print(desc)
42 print("Example usage")
43 print(example)
44end
45--
46-- writes data to ascii textfile.
47function writeDumpFile(uid, blockData)
48 local destination = string.format("%s.eml", uid)
49 local file = io.open(destination, "w")
50 if file == nil then
51 return nil, string.format("Could not write to file %s", destination)
52 end
53 local rowlen = string.len(blockData[1])
54
55 for i,block in ipairs(blockData) do
56 if rowlen ~= string.len(block) then
57 print(string.format("WARNING: Dumpdata seems corrupted, line %d was not the same length as line 1",i))
58 end
59 file:write(block.."\n")
60 end
61 file:close()
62 return destination
63end
64--
65--- Picks out and displays the data read from a tag
66-- Specifically, takes a usb packet, converts to a Command
67-- (as in commands.lua), takes the data-array and
68-- reads the number of bytes specified in arg1 (arg0 in c-struct)
69-- and displays the data
70-- @blockno just to print which block the data belong to
71-- @param usbpacket the data received from the device
72function showdata(blockno, data)
73 local xorkey = '55AA55AA55AA55AA6262'
1cec48cc 74 local s = data.." | "
75 local dex = ''
76 local rs
77 for i = 1, 20-4, 4 do
78 local item = string.sub(data, i, i+3)
79 local xor = string.sub(xorkey, i, i+3)
80
81 if blockno > 2 then
82 rs = bit32.bxor(tonumber(item,16) , tonumber(xor,16))
83 else
84 rs = tonumber(item, 16)
85 end
86 dex = (dex..'%04X'):format(rs)
87 end
1cec48cc 88 s = s..dex.." | "
89 print( (" %02d | %s"):format(blockno,s))
90end
91--
92-- Send a "raw" iso14443a package, ie "hf 14a raw" command
93function sendRaw(rawdata, options)
94 --print(">> ", rawdata)
95 local flags = lib14a.ISO14A_COMMAND.ISO14A_NO_DISCONNECT + lib14a.ISO14A_COMMAND.ISO14A_RAW + lib14a.ISO14A_COMMAND.ISO14A_APPEND_CRC
96 local command = Command:new{cmd = cmds.CMD_READER_ISO_14443a,
97 arg1 = flags, -- Send raw
98 -- arg2 contains the length, which is half the length
99 -- of the ASCII-string rawdata
100 arg2 = string.len(rawdata)/2,
101 data = rawdata}
102 return lib14a.sendToDevice(command, options.ignore_response)
103end
104--
105-- Sends an instruction to do nothing, only disconnect
106function disconnect()
107 local command = Command:new{cmd = cmds.CMD_READER_ISO_14443a, arg1 = 0, }
108 -- We can ignore the response here, no ACK is returned for this command
109 -- Check /armsrc/iso14443a.c, ReaderIso14443a() for details
110 return lib14a.sendToDevice(command, true)
111 --core.console("hf 14a raw -r")
112end
113---
114-- The main entry point
115function main(args)
116
117 local ignore_response = false
118 local endblock = 20
119
120 -- Read the parameters
121 for o, a in getopt.getopt(args, 'hb:') do
122 if o == "h" then return help() end
123 if o == "b" then endblock = a end
124 end
125 endblock = endblock or 20
126
127 -- First of all, connect
128 info, err = lib14a.read1443a(true)
129 if err then disconnect() return oops(err) end
130 core.clearCommandBuffer()
131
132 local blockData = {}
133
134 -- Show tag info
135 print(("\nFound Card UID [%s]\n"):format(info.uid))
136
137 print("blk | data | xored")
138 print("----+------------------+-------------------")
139 for block = 00, endblock do
140 local cmd = string.format("10%02x00", block)
141 res, err = sendRaw(cmd , {ignore_response = ignore_response})
142 if err then disconnect() return oops(err) end
143
144 local cmd_response = Command.parse(res)
145 local len = tonumber(cmd_response.arg1) * 2
146 local data = string.sub(tostring(cmd_response.data), 0, len-4)
147
148 showdata(block, data)
149 table.insert(blockData, data)
150 end
151 print("----+------------------+-------------------")
152 disconnect()
153
154 local filename, err = writeDumpFile(info.uid, blockData)
155 if err then return oops(err) end
156
157 print(string.format("\nDumped data into %s", filename))
158end
159
160
161
162
163-------------------------
164-- Testing
165-------------------------
166function selftest()
167 DEBUG = true
168 dbg("Performing test")
169 main()
170 dbg("Tests done")
171end
172-- Flip the switch here to perform a sanity check.
173-- It read a nonce in two different ways, as specified in the usage-section
174if "--test"==args then
175 selftest()
176else
177 -- Call the main
178 main(args)
179end
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