client/scripts/tnp3dump.lua

   1 local cmds = require('commands')
   2 local getopt = require('getopt')
   3 local bin = require('bin')
   4 local lib14a = require('read14a')
   5 local utils = require('utils')
   6 local md5 = require('md5')
   7 local dumplib = require('html_dumplib')
   8 local toys = require('default_toys')
   9
  10 example =[[
  11         script run tnp3dump
  12         script run tnp3dump -n
  13         script run tnp3dump -p
  14         script run tnp3dump -k aabbccddeeff
  15         script run tnp3dump -k aabbccddeeff -n
  16         script run tnp3dump -o myfile
  17         script run tnp3dump -n -o myfile
  18         script run tnp3dump -p -o myfile
  19         script run tnp3dump -k aabbccddeeff -n -o myfile
  20 ]]
  21 author = "Iceman"
  22 usage = "script run tnp3dump -k <key> -n -p -o <filename>"
  23 desc =[[
  24 This script will try to dump the contents of a Mifare TNP3xxx card.
  25 It will need a valid KeyA in order to find the other keys and decode the card.
  26 Arguments:
  27         -h             : this help
  28         -k <key>       : Sector 0 Key A.
  29         -n             : Use the nested cmd to find all keys
  30         -p             : Use the precalc to find all keys
  31         -o             : filename for the saved dumps
  32 ]]
  33 local RANDOM = '20436F707972696768742028432920323031302041637469766973696F6E2E20416C6C205269676874732052657365727665642E20'
  34 local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds
  35 local DEBUG = false -- the debug flag
  36 local numBlocks = 64
  37 local numSectors = 16
  38 ---
  39 -- A debug printout-function
  40 function dbg(args)
  41         if not DEBUG then
  42                 return
  43         end
  44
  45     if type(args) == "table" then
  46                 local i = 1
  47                 while result[i] do
  48                         dbg(result[i])
  49                         i = i+1
  50                 end
  51         else
  52                 print("###", args)
  53         end
  54 end
  55 ---
  56 -- This is only meant to be used when errors occur
  57 function oops(err)
  58         print("ERROR: ",err)
  59 end
  60 ---
  61 -- Usage help
  62 function help()
  63         print(desc)
  64         print("Example usage")
  65         print(example)
  66 end
  67 --
  68 -- Exit message
  69 function ExitMsg(msg)
  70         print( string.rep('--',20) )
  71         print( string.rep('--',20) )
  72         print(msg)
  73         print()
  74 end
  75
  76 local function readdumpkeys(infile)
  77          t = infile:read("*all")
  78          len = string.len(t)
  79          local len,hex = bin.unpack(("H%d"):format(len),t)
  80          return hex
  81 end
  82
  83 local function waitCmd()
  84         local response = core.WaitForResponseTimeout(cmds.CMD_ACK,TIMEOUT)
  85         if response then
  86                 local count,cmd,arg0 = bin.unpack('LL',response)
  87                 if(arg0==1) then
  88                         local count,arg1,arg2,data = bin.unpack('LLH511',response,count)
  89                         return data:sub(1,32)
  90                 else
  91                         return nil, "Couldn't read block.."
  92                 end
  93         end
  94         return nil, "No response from device"
  95 end
  96
  97 local function main(args)
  98
  99         print( string.rep('--',20) )
 100         print( string.rep('--',20) )
 101
 102         local keyA
 103         local cmd
 104         local err
 105         local useNested = false
 106         local usePreCalc = false
 107         local cmdReadBlockString = 'hf mf rdbl %d A %s'
 108         local input = "dumpkeys.bin"
 109         local outputTemplate = os.date("toydump_%Y-%m-%d_%H%M%S");
 110
 111         -- Arguments for the script
 112         for o, a in getopt.getopt(args, 'hk:npo:') do
 113                 if o == "h" then return help() end
 114                 if o == "k" then keyA = a end
 115                 if o == "n" then useNested = true end
 116                 if o == "p" then usePreCalc = true end
 117                 if o == "o" then outputTemplate = a end
 118         end
 119
 120         -- validate input args.
 121         keyA =  keyA or '4b0b20107ccb'
 122         if #(keyA) ~= 12 then
 123                 return oops( string.format('Wrong length of write key (was %d) expected 12', #keyA))
 124         end
 125
 126         -- Turn off Debug
 127         local cmdSetDbgOff = "hf mf dbg 0"
 128         core.console( cmdSetDbgOff)
 129
 130         result, err = lib14a.read14443a(false, true)
 131         if not result then
 132                 return oops(err)
 133         end
 134
 135         core.clearCommandBuffer()
 136
 137         -- Show tag info
 138         print((' Found tag %s'):format(result.name))
 139
 140         dbg(('Using keyA : %s'):format(keyA))
 141
 142         --Trying to find the other keys
 143         if useNested then
 144           core.console( ('hf mf nested 1 0 A %s d'):format(keyA) )
 145         end
 146
 147         core.clearCommandBuffer()
 148
 149         local akeys = ''
 150         if usePreCalc then
 151                 local pre = require('precalc')
 152                 akeys = pre.GetAll(result.uid)
 153         else
 154                 print('Loading dumpkeys.bin')
 155                 local hex, err = utils.ReadDumpFile(input)
 156                 if not hex then
 157                         return oops(err)
 158                 end
 159                 akeys = hex:sub(0,12*16)
 160         end
 161
 162         -- Read block 0
 163         cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = 0,arg2 = 0,arg3 = 0, data = keyA}
 164         err = core.SendCommand(cmd:getBytes())
 165         if err then return oops(err) end
 166         local block0, err = waitCmd()
 167         if err then return oops(err) end
 168
 169         -- Read block 1
 170         cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = 1,arg2 = 0,arg3 = 0, data = keyA}
 171         err = core.SendCommand(cmd:getBytes())
 172         if err then return oops(err) end
 173         local block1, err = waitCmd()
 174         if err then return oops(err) end
 175
 176         local tmpHash = block0..block1..'%02x'..RANDOM
 177
 178         local key
 179         local pos = 0
 180         local blockNo
 181         local blocks = {}
 182
 183         print('Reading card data')
 184         core.clearCommandBuffer()
 185
 186         -- main loop
 187         io.write('Reading blocks > ')
 188         for blockNo = 0, numBlocks-1, 1 do
 189
 190                 if core.ukbhit() then
 191                         print("aborted by user")
 192                         break
 193                 end
 194
 195                 pos = (math.floor( blockNo / 4 ) * 12)+1
 196                 key = akeys:sub(pos, pos + 11 )
 197                 cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = blockNo ,arg2 = 0,arg3 = 0, data = key}
 198                 local err = core.SendCommand(cmd:getBytes())
 199                 if err then return oops(err) end
 200                 local blockdata, err = waitCmd()
 201                 if err then return oops(err) end
 202
 203
 204                 if  blockNo%4 ~= 3 then
 205
 206                         if blockNo < 8 then
 207                                 -- Block 0-7 not encrypted
 208                                 blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,blockdata)
 209                         else
 210                                 -- blocks with zero not encrypted.
 211                                 if string.find(blockdata, '^0+$') then
 212                                         blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,blockdata)
 213                                 else
 214                                         local baseStr = utils.ConvertHexToAscii(tmpHash:format(blockNo))
 215                                         local key = md5.sumhexa(baseStr)
 216                                         local aestest = core.aes128_decrypt(key, blockdata)
 217                                         local hex = utils.ConvertAsciiToBytes(aestest)
 218                                         hex = utils.ConvertBytesToHex(hex)
 219                                         blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,hex)
 220                                         io.write(blockNo..',')
 221                                 end
 222                         end
 223                 else
 224                         -- Sectorblocks, not encrypted
 225                         blocks[blockNo+1] = ('%02d  :: %s%s'):format(blockNo,key,blockdata:sub(13,32))
 226                 end
 227         end
 228         io.write('\n')
 229
 230         core.clearCommandBuffer()
 231
 232         -- Print results
 233         local bindata = {}
 234         local emldata = ''
 235
 236         for _,s in pairs(blocks) do
 237                 local slice = s:sub(8,#s)
 238                 local str = utils.ConvertBytesToAscii(
 239                                  utils.ConvertHexToBytes(slice)
 240                                 )
 241                 emldata = emldata..slice..'\n'
 242                 for c in (str):gmatch('.') do
 243                         bindata[#bindata+1] = c
 244                 end
 245         end
 246
 247         print( string.rep('--',20) )
 248
 249         local uid = block0:sub(1,8)
 250         local toytype = block1:sub(1,4)
 251         local cardidLsw = block1:sub(9,16)
 252         local cardidMsw = block1:sub(16,24)
 253         local cardid = block1:sub(9,24)
 254         local subtype = block1:sub(25,28)
 255
 256         -- Write dump to files
 257         if not DEBUG then
 258                 local foo = dumplib.SaveAsBinary(bindata, outputTemplate..'-'..uid..'.bin')
 259                 print(("Wrote a BIN dump to:  %s"):format(foo))
 260                 local bar = dumplib.SaveAsText(emldata, outputTemplate..'-'..uid..'.eml')
 261                 print(("Wrote a EML dump to:  %s"):format(bar))
 262         end
 263
 264         print( string.rep('--',20) )
 265         -- Show info
 266
 267         local item = toys.Find(toytype, subtype)
 268         if item then
 269                 print(('            ITEM TYPE : %s - %s (%s)'):format(item[6],item[5], item[4]) )
 270         else
 271                 print(('            ITEM TYPE : 0x%s 0x%s'):format(toytype, subtype))
 272         end
 273
 274         print( ('                  UID : 0x%s'):format(uid) )
 275         print( ('               CARDID : 0x%s'):format(cardid ) )
 276         print( string.rep('--',20) )
 277
 278         core.clearCommandBuffer()
 279 end
 280 main(args)