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 toys = require('default_toys2')
   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
  34 local HASHCONSTANT = '20436F707972696768742028432920323031302041637469766973696F6E2E20416C6C205269676874732052657365727665642E20'
  35
  36 local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds
  37 local DEBUG = false -- the debug flag
  38 local numBlocks = 64
  39 local numSectors = 16
  40 ---
  41 -- A debug printout-function
  42 function dbg(args)
  43         if not DEBUG then
  44                 return
  45         end
  46
  47     if type(args) == "table" then
  48                 local i = 1
  49                 while result[i] do
  50                         dbg(result[i])
  51                         i = i+1
  52                 end
  53         else
  54                 print("###", args)
  55         end
  56 end
  57 ---
  58 -- This is only meant to be used when errors occur
  59 function oops(err)
  60         print("ERROR: ",err)
  61 end
  62 ---
  63 -- Usage help
  64 function help()
  65         print(desc)
  66         print("Example usage")
  67         print(example)
  68 end
  69 --
  70 -- Exit message
  71 function ExitMsg(msg)
  72         print( string.rep('--',20) )
  73         print( string.rep('--',20) )
  74         print(msg)
  75         print()
  76 end
  77
  78 local function readdumpkeys(infile)
  79          t = infile:read("*all")
  80          len = string.len(t)
  81          local len,hex = bin.unpack(("H%d"):format(len),t)
  82          return hex
  83 end
  84
  85 local function waitCmd()
  86         local response = core.WaitForResponseTimeout(cmds.CMD_ACK,TIMEOUT)
  87         if response then
  88                 local count,cmd,arg0 = bin.unpack('LL',response)
  89                 if(arg0==1) then
  90                         local count,arg1,arg2,data = bin.unpack('LLH511',response,count)
  91                         return data:sub(1,32)
  92                 else
  93                         return nil, "Couldn't read block.."
  94                 end
  95         end
  96         return nil, "No response from device"
  97 end
  98
  99 local function computeCrc16(s)
 100         local hash = core.crc16(utils.ConvertHexToAscii(s))
 101         return hash
 102 end
 103
 104 local function reverseCrcBytes(crc)
 105         crc2 = crc:sub(3,4)..crc:sub(1,2)
 106         return tonumber(crc2,16)
 107 end
 108
 109 local function main(args)
 110
 111         print( string.rep('--',20) )
 112         print( string.rep('--',20) )
 113
 114         local keyA
 115         local cmd
 116         local err
 117         local useNested = false
 118         local usePreCalc = false
 119         local cmdReadBlockString = 'hf mf rdbl %d A %s'
 120         local input = "dumpkeys.bin"
 121         local outputTemplate = os.date("toydump_%Y-%m-%d_%H%M%S");
 122
 123         -- Arguments for the script
 124         for o, a in getopt.getopt(args, 'hk:npo:') do
 125                 if o == "h" then return help() end
 126                 if o == "k" then keyA = a end
 127                 if o == "n" then useNested = true end
 128                 if o == "p" then usePreCalc = true end
 129                 if o == "o" then outputTemplate = a end
 130         end
 131
 132         -- validate input args.
 133         keyA =  keyA or '4b0b20107ccb'
 134         if #(keyA) ~= 12 then
 135                 return oops( string.format('Wrong length of write key (was %d) expected 12', #keyA))
 136         end
 137
 138         -- Turn off Debug
 139         local cmdSetDbgOff = "hf mf dbg 0"
 140         core.console( cmdSetDbgOff)
 141
 142         result, err = lib14a.read1443a(false)
 143         if not result then
 144                 return oops(err)
 145         end
 146
 147         core.clearCommandBuffer()
 148
 149         if 0x01 ~= result.sak then -- NXP MIFARE TNP3xxx
 150         --      return oops('This is not a TNP3xxx tag. aborting.')
 151         end
 152
 153         -- Show tag info
 154         print((' Found tag %s'):format(result.name))
 155
 156         dbg(('Using keyA : %s'):format(keyA))
 157
 158         --Trying to find the other keys
 159         if useNested then
 160           core.console( ('hf mf nested 1 0 A %s d'):format(keyA) )
 161         end
 162
 163         core.clearCommandBuffer()
 164
 165         local akeys = ''
 166         if usePreCalc then
 167                 local pre = require('precalc')
 168                 akeys = pre.GetAll(result.uid)
 169         else
 170                 print('Loading dumpkeys.bin')
 171                 local hex, err = utils.ReadDumpFile(input)
 172                 if not hex then
 173                         return oops(err)
 174                 end
 175                 akeys = hex:sub(0,12*16)
 176         end
 177
 178         -- Read block 0
 179         cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = 0,arg2 = 0,arg3 = 0, data = keyA}
 180         err = core.SendCommand(cmd:getBytes())
 181         if err then return oops(err) end
 182         local block0, err = waitCmd()
 183         if err then return oops(err) end
 184
 185         -- Read block 1
 186         cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = 1,arg2 = 0,arg3 = 0, data = keyA}
 187         err = core.SendCommand(cmd:getBytes())
 188         if err then return oops(err) end
 189         local block1, err = waitCmd()
 190         if err then return oops(err) end
 191
 192         local key
 193         local pos = 0
 194         local blockNo
 195         local blocks = {}
 196
 197         print('Reading card data')
 198         core.clearCommandBuffer()
 199
 200         -- main loop
 201         io.write('Reading blocks > ')
 202         for blockNo = 0, numBlocks-1, 1 do
 203
 204                 if core.ukbhit() then
 205                         print("aborted by user")
 206                         break
 207                 end
 208
 209                 pos = (math.floor( blockNo / 4 ) * 12)+1
 210                 key = akeys:sub(pos, pos + 11 )
 211                 cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = blockNo ,arg2 = 0,arg3 = 0, data = key}
 212                 local err = core.SendCommand(cmd:getBytes())
 213                 if err then return oops(err) end
 214                 local blockdata, err = waitCmd()
 215                 if err then return oops(err) end
 216
 217
 218                 if  blockNo%4 ~= 3 then
 219
 220                         if blockNo < 8 then
 221                                 -- Block 0-7 not encrypted
 222                                 blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,blockdata)
 223                         else
 224                                 local base = ('%s%s%02x%s'):format(block0, block1, blockNo, HASHCONSTANT)
 225                                 local baseStr = utils.ConvertHexToAscii(base)
 226                                 local md5hash = md5.sumhexa(baseStr)
 227                                 local aestest = core.aes(md5hash, blockdata)
 228
 229                                 local hex = utils.ConvertAsciiToBytes(aestest)
 230                                 hex = utils.ConvertBytesToHex(hex)
 231
 232                                 -- blocks with zero not encrypted.
 233                                 if string.find(blockdata, '^0+$') then
 234                                         blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,blockdata)
 235                                 else
 236                                         blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,hex)
 237                                         io.write( blockNo..',')
 238                                 end
 239                         end
 240                 else
 241                         -- Sectorblocks, not encrypted
 242                         blocks[blockNo+1] = ('%02d  :: %s%s'):format(blockNo,key,blockdata:sub(13,32))
 243                 end
 244         end
 245         io.write('\n')
 246
 247         core.clearCommandBuffer()
 248
 249         -- Print results
 250         local bindata = {}
 251         local emldata = ''
 252
 253         for _,s in pairs(blocks) do
 254                 local slice = s:sub(8,#s)
 255                 local str = utils.ConvertBytesToAscii(
 256                                  utils.ConvertHexToBytes(slice)
 257                                 )
 258                 emldata = emldata..slice..'\n'
 259                 for c in (str):gmatch('.') do
 260                         bindata[#bindata+1] = c
 261                 end
 262         end
 263
 264         print( string.rep('--',20) )
 265
 266
 267         local uid = block0:sub(1,8)
 268         local toytype = block1:sub(1,4)
 269         local cardidLsw = block1:sub(9,16)
 270         local cardidMsw = block1:sub(16,24)
 271         local cardid = block1:sub(9,24)
 272         local subtype = block1:sub(25,28)
 273
 274         -- Write dump to files
 275         if not DEBUG then
 276                 local foo = dumplib.SaveAsBinary(bindata, outputTemplate..'_uid_'..uid..'.bin')
 277                 print(("Wrote a BIN dump to:  %s"):format(foo))
 278                 local bar = dumplib.SaveAsText(emldata, outputTemplate..'_uid_'..uid..'.eml')
 279                 print(("Wrote a EML dump to:  %s"):format(bar))
 280         end
 281
 282         local item = toys.Find(toytype, subtype)
 283         if item then
 284                 local itemStr = ('%s - %s (%s)'):format(item[6],item[5], item[4])
 285                 print('            ITEM TYPE : '..itemStr )
 286         else
 287                 print(('            ITEM TYPE : 0x%s 0x%s'):format(toytype, subtype))
 288         end
 289
 290         -- Show info
 291         print( (' Alter ego / traptype : 0x%s'):format(traptype) )
 292         print( ('                  UID : 0x%s'):format(uid) )
 293         print( ('               CARDID : 0x%s'):format(cardid ) )
 294
 295         print( string.rep('--',20) )
 296
 297 end
 298 main(args)