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_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 return end
  42
  43     if type(args) == "table" then
  44                 local i = 1
  45                 while result[i] do
  46                         dbg(result[i])
  47                         i = i+1
  48                 end
  49         else
  50                 print("###", args)
  51         end
  52 end
  53 ---
  54 -- This is only meant to be used when errors occur
  55 function oops(err)
  56         print("ERROR: ",err)
  57         return nil,err
  58 end
  59 ---
  60 -- Usage help
  61 function help()
  62         print(desc)
  63         print("Example usage")
  64         print(example)
  65 end
  66 --
  67 -- Exit message
  68 function ExitMsg(msg)
  69         print( string.rep('--',20) )
  70         print( string.rep('--',20) )
  71         print(msg)
  72         print()
  73 end
  74
  75 local function readdumpkeys(infile)
  76          t = infile:read("*all")
  77          len = string.len(t)
  78          local len,hex = bin.unpack(("H%d"):format(len),t)
  79          return hex
  80 end
  81
  82 local function waitCmd()
  83         local response = core.WaitForResponseTimeout(cmds.CMD_ACK,TIMEOUT)
  84         if response then
  85                 local count,cmd,arg0 = bin.unpack('LL',response)
  86                 if(arg0==1) then
  87                         local count,arg1,arg2,data = bin.unpack('LLH511',response,count)
  88                         return data:sub(1,32)
  89                 else
  90                         return nil, "Couldn't read block.."
  91                 end
  92         end
  93         return nil, "No response from device"
  94 end
  95
  96 local function main(args)
  97
  98         print( string.rep('--',20) )
  99         print( string.rep('--',20) )
 100
 101         local keyA
 102         local cmd
 103         local err
 104         local useNested = false
 105         local usePreCalc = false
 106         local cmdReadBlockString = 'hf mf rdbl %d A %s'
 107         local input = "dumpkeys.bin"
 108         local outputTemplate = os.date("toydump_%Y-%m-%d_%H%M%S");
 109
 110         -- Arguments for the script
 111         for o, a in getopt.getopt(args, 'hk:npo:') do
 112                 if o == "h" then return help() end
 113                 if o == "k" then keyA = a end
 114                 if o == "n" then useNested = true end
 115                 if o == "p" then usePreCalc = true end
 116                 if o == "o" then outputTemplate = a end
 117         end
 118
 119         -- validate input args.
 120         keyA =  keyA or '4b0b20107ccb'
 121         if #(keyA) ~= 12 then
 122                 return oops( string.format('Wrong length of write key (was %d) expected 12', #keyA))
 123         end
 124
 125         -- Turn off Debug
 126         local cmdSetDbgOff = "hf mf dbg 0"
 127         core.console( cmdSetDbgOff)
 128
 129         result, err = lib14a.read1443a(false)
 130         if not result then
 131                 return oops(err)
 132         end
 133
 134         core.clearCommandBuffer()
 135
 136         -- Show tag info
 137         print((' Found tag %s'):format(result.name))
 138
 139         dbg(('Using keyA : %s'):format(keyA))
 140
 141         --Trying to find the other keys
 142         if useNested then
 143           core.console( ('hf mf nested 1 0 A %s d'):format(keyA) )
 144         end
 145
 146         core.clearCommandBuffer()
 147
 148         local akeys = ''
 149         if usePreCalc then
 150                 local pre = require('precalc')
 151                 akeys = pre.GetAll(result.uid)
 152         else
 153                 print('Loading dumpkeys.bin')
 154                 local hex, err = utils.ReadDumpFile(input)
 155                 if not hex then
 156                         return oops(err)
 157                 end
 158                 akeys = hex:sub(0,12*16)
 159         end
 160
 161         -- Read block 0
 162         cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = 0,arg2 = 0,arg3 = 0, data = keyA}
 163         err = core.SendCommand(cmd:getBytes())
 164         if err then return oops(err) end
 165         local block0, err = waitCmd()
 166         if err then return oops(err) end
 167
 168         core.clearCommandBuffer()
 169
 170         -- Read block 1
 171         cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = 1,arg2 = 0,arg3 = 0, data = keyA}
 172         err = core.SendCommand(cmd:getBytes())
 173         if err then return oops(err) end
 174         local block1, err = waitCmd()
 175         if err then return oops(err) end
 176
 177         core.clearCommandBuffer()
 178
 179         local tmpHash = block0..block1..'%02x'..RANDOM
 180
 181         local key
 182         local pos = 0
 183         local blockNo
 184         local blocks = {}
 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                 core.clearCommandBuffer()
 196
 197                 pos = (math.floor( blockNo / 4 ) * 12)+1
 198                 key = akeys:sub(pos, pos + 11 )
 199                 cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = blockNo ,arg2 = 0,arg3 = 0, data = key}
 200                 local err = core.SendCommand(cmd:getBytes())
 201                 if err then return oops(err) end
 202                 local blockdata, err = waitCmd()
 203                 if err then return oops(err) end
 204
 205
 206                 if  blockNo%4 ~= 3 then
 207
 208                         if blockNo < 8 then
 209                                 -- Block 0-7 not encrypted
 210                                 blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,blockdata)
 211                         else
 212                                 -- blocks with zero not encrypted.
 213                                 if string.find(blockdata, '^0+$') then
 214                                         blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,blockdata)
 215                                 else
 216                                         local baseStr = utils.ConvertHexToAscii(tmpHash:format(blockNo))
 217                                         local key = md5.sumhexa(baseStr)
 218                                         local aestest = core.aes128_decrypt(key, blockdata)
 219                                         local hex = utils.ConvertAsciiToHex(aestest)
 220
 221                                         blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,hex)
 222                                         io.write(blockNo..',')
 223                                 end
 224                         end
 225                 else
 226                         -- Sectorblocks, not encrypted
 227                         blocks[blockNo+1] = ('%02d  :: %s%s'):format(blockNo,key,blockdata:sub(13,32))
 228                 end
 229         end
 230         io.write('\n')
 231
 232         core.clearCommandBuffer()
 233
 234         -- Print results
 235         local bindata = {}
 236         local emldata = ''
 237
 238         for _,s in pairs(blocks) do
 239                 local slice = s:sub(8,#s)
 240                 local str = utils.ConvertHexToAscii(slice)
 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)