git.zerfleddert.de Git - proxmark3-svn/blob - client/scripts/hard.lua

   1 local cmds = require('commands')
   2 local getopt = require('getopt')
   3 local utils = require('utils')
   4 local lib14a = require('read14a')
   5
   6 example = "script iterates over all possible sectors for a tag and runs hardnested attack against them to collect the keys."
   7 author = "Iceman"
   8 desc =
   9 [[
  10 This script iterates over all possible sectors for a tag and runs hardnested attack against them to collect the keys.
  11
  12 Arguments:
  13         -k                              Known key, 6 bytes (12 hex digits)
  14 Examples :
  15         script hard -b 112233445566
  16 ]]
  17
  18 local numBlocks = 64
  19 local numSectors = 16
  20 local DEBUG = TRUE
  21 ---
  22 -- A debug printout-function
  23 function dbg(args)
  24         if not DEBUG then return end
  25
  26     if type(args) == "table" then
  27                 local i = 1
  28                 while result[i] do
  29                         dbg(result[i])
  30                         i = i+1
  31                 end
  32         else
  33                 print("###", args)
  34         end
  35 end
  36 ---
  37 -- This is only meant to be used when errors occur
  38 function oops(err)
  39         print("ERROR: ",err)
  40         return nil,err
  41 end
  42 ---
  43 -- Usage help
  44 function help()
  45         print(desc)
  46         print("Example usage")
  47         print(example)
  48 end
  49 --
  50 -- Exit message
  51 function ExitMsg(msg)
  52         print( string.rep('--',20) )
  53         print( string.rep('--',20) )
  54         print(msg)
  55         print()
  56 end
  57 -- A little helper to place an item first in the list
  58 local function placeFirst(akey, list)
  59         akey  = akey:lower()
  60         if list[1] == akey then
  61                 -- Already at pole position
  62                 return list
  63         end
  64         local result = {akey}
  65         --print(("Putting '%s' first"):format(akey))
  66         for i,v in ipairs(list) do
  67                 if v ~= akey then
  68                         result[#result+1] = v
  69                 end
  70         end
  71         return result
  72 end
  73 -- A function to display the results
  74 -- TODO: iceman 2016,  still screws up output when a key is not found.
  75 local function displayresults(results)
  76         local sector, blockNo, keyA, keyB, succA, succB, _
  77
  78         print("|---|----------------|---|----------------|---|")
  79         print("|sec|key A           |res|key B           |res|")
  80         print("|---|----------------|---|----------------|---|")
  81
  82         for sector,_ in pairs(results) do
  83                 succA, succB, keyA, keyB = unpack(_)
  84                 print(("|%03d|  %s  | %s |  %s  | %s |"):format(sector, keyA, succA, keyB, succB))
  85         end
  86         print("|---|----------------|---|----------------|---|")
  87
  88 end
  89 ---
  90 -- a simple selftest function,
  91 local function selftest()
  92         return nil
  93 end
  94
  95 ---
  96 -- The main entry point
  97 function main(args)
  98
  99         local blockno = '00'
 100         local keytype = 0 --A  01==B
 101         local key = 'fc00018778f7'
 102         local trgkey = ''
 103         local numSectors = 16
 104
 105         -- Read the parameters
 106         for o, a in getopt.getopt(args, 'hk:') do
 107                 if o == "h" then return help() end
 108                 if o == "k" then key = a end
 109         end
 110
 111         -- Turn off Debug
 112         local cmdSetDbgOff = "hf mf dbg 0"
 113         core.console( cmdSetDbgOff)
 114         -- identify tag
 115         result, err = lib14a.read1443a(false)
 116         if not result then
 117                 return oops(err)
 118         end
 119         core.clearCommandBuffer()
 120
 121         -- Show tag info
 122         print((' Found tag %s'):format(result.name))
 123
 124         if 0x18 == result.sak then --NXP MIFARE Classic 4k | Plus 4k
 125                 -- IFARE Classic 4K offers 4096 bytes split into forty sectors,
 126                 -- of which 32 are same size as in the 1K with eight more that are quadruple size sectors.
 127                 numSectors = 40
 128         elseif 0x08 == result.sak then -- NXP MIFARE CLASSIC 1k | Plus 2k
 129                 -- 1K offers 1024 bytes of data storage, split into 16 sector
 130                 numSectors = 16
 131         elseif 0x09 == result.sak then -- NXP MIFARE Mini 0.3k
 132                 -- MIFARE Classic mini offers 320 bytes split into five sectors.
 133                 numSectors = 5
 134         elseif  0x10 == result.sak then-- "NXP MIFARE Plus 2k"
 135                 numSectors = 32
 136         else
 137                 print("I don't know how many sectors there are on this type of card, defaulting to 16")
 138         end
 139
 140         result = {}
 141         for sector=1,numSectors do
 142
 143                 --[[
 144                 The mifare Classic 1k card has 16 sectors of 4 data blocks each.
 145                 The first 32 sectors of a mifare Classic 4k card consists of 4 data blocks and the remaining
 146                 8 sectors consist of 16 data blocks.
 147                 --]]
 148                 local trgblockno = sector * 4 - 1
 149                 if sector > 32 then
 150                         trgblockno = 32 * 4 + (sector-32) * 16 -1
 151                 end
 152
 153                 trgblockno = ("%02d"):format(trgblockno)
 154
 155                 local succA = 1
 156                 local succB = 1
 157                 local errA, keyA = core.hardnested(blockno, keytype, key, trgblockno, '0', trgkey, 0,0,0,0)
 158                 keyA = keyA or ""
 159                 if errA == nil or errA > 0 then succA = 0 end
 160
 161                 local errB, keyB = core.hardnested(blockno, keytype, key, trgblockno, '1', trgkey, 0,0,0,0)
 162                 keyB = keyB or ""
 163                 if errB == nil or errB > 0 then succB = 0 end
 164                 result[sector] = { succA, succB, utils.ConvertAsciiToHex(keyA), utils.ConvertAsciiToHex(keyB) }
 165
 166                 -- Check if user aborted
 167                 if core.ukbhit() then
 168                         print("Aborted by user")
 169                         break
 170                 end
 171         end
 172         displayresults(result)
 173 end
 174
 175 main(args)