git.zerfleddert.de Git - proxmark3-svn/blob - 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 toyNames = require('default_toys')
   9
  10
  11 example =[[
  12         script run tnp3dump
  13         script run tnp3dump -n
  14         script run tnp3dump -p
  15         script run tnp3dump -k aabbccddeeff
  16         script run tnp3dump -k aabbccddeeff -n
  17         script run tnp3dump -o myfile
  18         script run tnp3dump -n -o myfile
  19         script run tnp3dump -p -o myfile
  20         script run tnp3dump -k aabbccddeeff -n -o myfile
  21 ]]
  22 author = "Iceman"
  23 usage = "script run tnp3dump -k <key> -n -p -o <filename>"
  24 desc =[[
  25 This script will try to dump the contents of a Mifare TNP3xxx card.
  26 It will need a valid KeyA in order to find the other keys and decode the card.
  27 Arguments:
  28         -h             : this help
  29         -k <key>       : Sector 0 Key A.
  30         -n             : Use the nested cmd to find all keys
  31         -p             : Use the precalc to find all keys
  32         -o             : filename for the saved dumps
  33 ]]
  34
  35 local HASHCONSTANT = '20436F707972696768742028432920323031302041637469766973696F6E2E20416C6C205269676874732052657365727665642E20'
  36
  37 local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds
  38 local DEBUG = false -- the debug flag
  39 local numBlocks = 64
  40 local numSectors = 16
  41 ---
  42 -- A debug printout-function
  43 function dbg(args)
  44         if not DEBUG then
  45                 return
  46         end
  47
  48     if type(args) == "table" then
  49                 local i = 1
  50                 while result[i] do
  51                         dbg(result[i])
  52                         i = i+1
  53                 end
  54         else
  55                 print("###", args)
  56         end
  57 end
  58 ---
  59 -- This is only meant to be used when errors occur
  60 function oops(err)
  61         print("ERROR: ",err)
  62 end
  63 ---
  64 -- Usage help
  65 function help()
  66         print(desc)
  67         print("Example usage")
  68         print(example)
  69 end
  70 --
  71 -- Exit message
  72 function ExitMsg(msg)
  73         print( string.rep('--',20) )
  74         print( string.rep('--',20) )
  75         print(msg)
  76         print()
  77 end
  78
  79 local function readdumpkeys(infile)
  80          t = infile:read("*all")
  81          len = string.len(t)
  82          local len,hex = bin.unpack(("H%d"):format(len),t)
  83          return hex
  84 end
  85
  86 local function waitCmd()
  87         local response = core.WaitForResponseTimeout(cmds.CMD_ACK,TIMEOUT)
  88         if response then
  89                 local count,cmd,arg0 = bin.unpack('LL',response)
  90                 if(arg0==1) then
  91                         local count,arg1,arg2,data = bin.unpack('LLH511',response,count)
  92                         return data:sub(1,32)
  93                 else
  94                         return nil, "Couldn't read block.."
  95                 end
  96         end
  97         return nil, "No response from device"
  98 end
  99
 100 local function computeCrc16(s)
 101         local hash = core.crc16(utils.ConvertHexToAscii(s))
 102         return hash
 103 end
 104
 105 local function reverseCrcBytes(crc)
 106         crc2 = crc:sub(3,4)..crc:sub(1,2)
 107         return tonumber(crc2,16)
 108 end
 109
 110 local function main(args)
 111
 112         print( string.rep('--',20) )
 113         print( string.rep('--',20) )
 114
 115         local keyA
 116         local cmd
 117         local err
 118         local useNested = false
 119         local usePreCalc = false
 120         local cmdReadBlockString = 'hf mf rdbl %d A %s'
 121         local input = "dumpkeys.bin"
 122         local outputTemplate = os.date("toydump_%Y-%m-%d_%H%M%S");
 123
 124         -- Arguments for the script
 125         for o, a in getopt.getopt(args, 'hk:npo:') do
 126                 if o == "h" then return help() end
 127                 if o == "k" then keyA = a end
 128                 if o == "n" then useNested = true end
 129                 if o == "p" then usePreCalc = true end
 130                 if o == "o" then outputTemplate = a end
 131         end
 132
 133         -- validate input args.
 134         keyA =  keyA or '4b0b20107ccb'
 135         if #(keyA) ~= 12 then
 136                 return oops( string.format('Wrong length of write key (was %d) expected 12', #keyA))
 137         end
 138
 139         -- Turn off Debug
 140         local cmdSetDbgOff = "hf mf dbg 0"
 141         core.console( cmdSetDbgOff)
 142
 143         result, err = lib14a.read1443a(false)
 144         if not result then
 145                 return oops(err)
 146         end
 147
 148         core.clearCommandBuffer()
 149
 150         if 0x01 ~= result.sak then -- NXP MIFARE TNP3xxx
 151         --      return oops('This is not a TNP3xxx tag. aborting.')
 152         end
 153
 154         -- Show tag info
 155         print((' Found tag %s'):format(result.name))
 156
 157         dbg(('Using keyA : %s'):format(keyA))
 158
 159         --Trying to find the other keys
 160         if useNested then
 161           core.console( ('hf mf nested 1 0 A %s d'):format(keyA) )
 162         end
 163
 164         core.clearCommandBuffer()
 165
 166         local akeys = ''
 167         if usePreCalc then
 168                 local pre = require('precalc')
 169                 akeys = pre.GetAll(result.uid)
 170         else
 171                 print('Loading dumpkeys.bin')
 172                 local hex, err = utils.ReadDumpFile(input)
 173                 if not hex then
 174                         return oops(err)
 175                 end
 176                 akeys = hex:sub(0,12*16)
 177         end
 178
 179         -- Read block 0
 180         cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = 0,arg2 = 0,arg3 = 0, data = keyA}
 181         err = core.SendCommand(cmd:getBytes())
 182         if err then return oops(err) end
 183         local block0, err = waitCmd()
 184         if err then return oops(err) end
 185
 186         -- Read block 1
 187         cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = 1,arg2 = 0,arg3 = 0, data = keyA}
 188         err = core.SendCommand(cmd:getBytes())
 189         if err then return oops(err) end
 190         local block1, err = waitCmd()
 191         if err then return oops(err) end
 192
 193         local key
 194         local pos = 0
 195         local blockNo
 196         local blocks = {}
 197
 198         print('Reading card data')
 199         core.clearCommandBuffer()
 200
 201         -- main loop
 202         io.write('Reading blocks > ')
 203         for blockNo = 0, numBlocks-1, 1 do
 204
 205                 if core.ukbhit() then
 206                         print("aborted by user")
 207                         break
 208                 end
 209
 210                 pos = (math.floor( blockNo / 4 ) * 12)+1
 211                 key = akeys:sub(pos, pos + 11 )
 212                 cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = blockNo ,arg2 = 0,arg3 = 0, data = key}
 213                 local err = core.SendCommand(cmd:getBytes())
 214                 if err then return oops(err) end
 215                 local blockdata, err = waitCmd()
 216                 if err then return oops(err) end
 217
 218
 219                 if  blockNo%4 ~= 3 then
 220
 221                         if blockNo < 8 then
 222                                 -- Block 0-7 not encrypted
 223                                 blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,blockdata)
 224                         else
 225                                 local base = ('%s%s%02x%s'):format(block0, block1, blockNo, HASHCONSTANT)
 226                                 local baseStr = utils.ConvertHexToAscii(base)
 227                                 local md5hash = md5.sumhexa(baseStr)
 228                                 local aestest = core.aes(md5hash, blockdata)
 229
 230                                 local hex = utils.ConvertAsciiToBytes(aestest)
 231                                 hex = utils.ConvertBytesToHex(hex)
 232
 233                                 -- blocks with zero not encrypted.
 234                                 if string.find(blockdata, '^0+$') then
 235                                         blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,blockdata)
 236                                 else
 237                                         blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,hex)
 238                                         io.write( blockNo..',')
 239                                 end
 240                         end
 241                 else
 242                         -- Sectorblocks, not encrypted
 243                         blocks[blockNo+1] = ('%02d  :: %s%s'):format(blockNo,key,blockdata:sub(13,32))
 244                 end
 245         end
 246         io.write('\n')
 247
 248         core.clearCommandBuffer()
 249
 250         -- Print results
 251         local bindata = {}
 252         local emldata = ''
 253
 254         for _,s in pairs(blocks) do
 255                 local slice = s:sub(8,#s)
 256                 local str = utils.ConvertBytesToAscii(
 257                                  utils.ConvertHexToBytes(slice)
 258                                 )
 259                 emldata = emldata..slice..'\n'
 260                 for c in (str):gmatch('.') do
 261                         bindata[#bindata+1] = c
 262                 end
 263         end
 264
 265         local uid = block0:sub(1,8)
 266         local itemtype = block1:sub(1,4)
 267         local cardidLsw = block1:sub(9,16)
 268         local cardidMsw = block1:sub(16,24)
 269         local cardid = block1:sub(9,24)
 270         local traptype = block1:sub(25,28)
 271
 272         -- Write dump to files
 273         if not DEBUG then
 274                 local foo = dumplib.SaveAsBinary(bindata, outputTemplate..'_uid_'..uid..'.bin')
 275                 print(("Wrote a BIN dump to:  %s"):format(foo))
 276                 local bar = dumplib.SaveAsText(emldata, outputTemplate..'_uid_'..uid..'.eml')
 277                 print(("Wrote a EML dump to:  %s"):format(bar))
 278         end
 279
 280         local itemtypename = toyNames[itemtype]
 281         if itemtypename == nil then
 282                 itemtypename = toyNames[utils.SwapEndiannessStr(itemtype,16)]
 283         end
 284         -- Show info
 285         print( string.rep('--',20) )
 286         print( ('            ITEM TYPE : 0x%s - %s'):format(itemtype, itemtypename) )
 287         print( (' Alter ego / traptype : 0x%s'):format(traptype) )
 288         print( ('                  UID : 0x%s'):format(uid) )
 289         print( ('               CARDID : 0x%s'):format(cardid ) )
 290
 291         print( string.rep('--',20) )
 292
 293 end
 294 main(args)