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

   1 local bin = require('bin')
   2 local getopt = require('getopt')
   3 local utils =  require('utils')
   4
   5 local bxor=bit32.bxor
   6
   7 example =[[
   8          script run calc_mizip
   9          script run calc_mizip -u 11223344
  10 ]]
  11 author = "Iceman"
  12 usage = "script run calc_mizip -u <uid>"
  13 desc =[[
  14 This script calculates mifare keys based on uid diversification for mizip.
  15 Algo not found by me.
  16 Arguments:
  17         -h             : this help
  18         -u <UID>       : UID
  19 ]]
  20 ---
  21 -- A debug printout-function
  22 function dbg(args)
  23     if type(args) == "table" then
  24                 local i = 1
  25                 while args[i] do
  26                         dbg(args[i])
  27                         i = i+1
  28                 end
  29         else
  30                 print("###", args)
  31         end
  32 end
  33 ---
  34 -- This is only meant to be used when errors occur
  35 function oops(err)
  36         print("ERROR: ",err)
  37         return nil,err
  38 end
  39 ---
  40 -- Usage help
  41 function help()
  42         print(desc)
  43         print("Example usage")
  44         print(example)
  45 end
  46 --
  47 -- Exit message
  48 function exitMsg(msg)
  49         print( string.rep('--',20) )
  50         print( string.rep('--',20) )
  51         print(msg)
  52         print()
  53 end
  54
  55 local _xortable = {
  56     --[[ sector key A/B, 6byte xor
  57     --]]
  58         {"001","09125a2589e5","F12C8453D821"},
  59         {"002","AB75C937922F","73E799FE3241"},
  60         {"003","E27241AF2C09","AA4D137656AE"},
  61         {"004","317AB72F4490","B01327272DFD"},
  62 }
  63 local function printRow(sector, keyA, keyB)
  64         print('|'..sector..'|  '..keyA..'  |  '..keyB..'  |' )
  65 end
  66 local function keyStr(p1, p2, p3, p4, p5, p6)
  67         return string.format('%02X%02X%02X%02X%02X%02X',p1, p2, p3, p4, p5, p6)
  68 end
  69 local function calckey(uid, xorkey, keytype)
  70         local p1,p2,p3,p4,p5,p6
  71         if keytype == 'A' then
  72                 p1 = bxor( uid[1], xorkey[1])
  73                 p2 = bxor( uid[2], xorkey[2])
  74                 p3 = bxor( uid[3], xorkey[3])
  75                 p4 = bxor( uid[4], xorkey[4])
  76                 p5 = bxor( uid[1], xorkey[5])
  77                 p6 = bxor( uid[2], xorkey[6])
  78         else
  79                 p1 = bxor( uid[3], xorkey[1])
  80                 p2 = bxor( uid[4], xorkey[2])
  81                 p3 = bxor( uid[1], xorkey[3])
  82                 p4 = bxor( uid[2], xorkey[4])
  83                 p5 = bxor( uid[3], xorkey[5])
  84                 p6 = bxor( uid[4], xorkey[6])
  85         end
  86         return keyStr(p1,p2,p3,p4,p5,p6)
  87 end
  88 local function main(args)
  89
  90         print( string.rep('==', 30) )
  91         print()
  92
  93         local i,j, pwd
  94         local uid = '11223344'
  95
  96         -- Arguments for the script
  97         for o, a in getopt.getopt(args, 'hu:') do
  98                 if o == "h" then return help() end
  99                 if o == "u" then uid = a end
 100         end
 101
 102         -- uid string checks
 103         if uid == nil then return oops('empty uid string') end
 104         if #uid == 0 then return oops('empty uid string') end
 105         if #uid ~= 8 then return oops('uid wrong length. Should be 4 hex bytes') end
 106
 107         local uidbytes = utils.ConvertHexToBytes(uid)
 108
 109         print('|UID|', uid)
 110         print('|---|----------------|----------------|')
 111         print('|sec|key A           |key B           |')
 112         print('|---|----------------|----------------|')
 113         printRow('000', keyStr(0xA0,0xA1,0xA2,0xA3,0xA4,0xA5), keyStr(0xB4,0xC1,0x32,0x43,0x9e,0xef) )
 114
 115     for k, v in pairs(_xortable) do
 116                 local keyA = calckey(uidbytes, utils.ConvertHexToBytes(v[2]), 'A')
 117                 local keyB = calckey(uidbytes, utils.ConvertHexToBytes(v[3]), 'B')
 118                 printRow(v[1], keyA, keyB  )
 119         end
 120         print('|---|----------------|----------------|')
 121 end
 122
 123 main(args)