Code improved for less memory

[proxmark3-svn] / client / scripts / tnp3dump.lua

diff --git a/client/scripts/tnp3dump.lua b/client/scripts/tnp3dump.lua
index 520161b93663856774d57463dda4c7028482c091..3955137e575da4e6e107ec1f3e6e908250b43fdd 100644 (file)
--- a/client/scripts/tnp3dump.lua
+++ b/client/scripts/tnp3dump.lua
@@ -5,19 +5,21 @@ local lib14a = require('read14a')
 local utils = require('utils')
 local md5 = require('md5')
 local dumplib = require('html_dumplib')
 local utils = require('utils')
 local md5 = require('md5')
 local dumplib = require('html_dumplib')

-local toyNames = require('default_toys')
+local toys = require('default_toys')

 
 example =[[
 
 example =[[

-       1. script run tnp3dump
-       2. script run tnp3dump -n
-       3. script run tnp3dump -k aabbccddeeff
-       4. script run tnp3dump -k aabbccddeeff -n
-       5. script run tnp3dump -o myfile 
-       6. script run tnp3dump -n -o myfile 
-       7. script run tnp3dump -k aabbccddeeff -n -o myfile 
+       script run tnp3dump
+       script run tnp3dump -n
+       script run tnp3dump -p
+       script run tnp3dump -k aabbccddeeff
+       script run tnp3dump -k aabbccddeeff -n
+       script run tnp3dump -o myfile 
+       script run tnp3dump -n -o myfile 
+       script run tnp3dump -p -o myfile 
+       script run tnp3dump -k aabbccddeeff -n -o myfile 

 ]]
 author = "Iceman"
 ]]
 author = "Iceman"

-usage = "script run tnp3dump -k <key> -n -o <filename>"
+usage = "script run tnp3dump -k <key> -n -p -o <filename>"

 desc =[[
 This script will try to dump the contents of a Mifare TNP3xxx card.
 It will need a valid KeyA in order to find the other keys and decode the card.
 desc =[[
 This script will try to dump the contents of a Mifare TNP3xxx card.
 It will need a valid KeyA in order to find the other keys and decode the card.


@@ -25,11 +27,10 @@ Arguments:
        -h             : this help
        -k <key>       : Sector 0 Key A.
        -n             : Use the nested cmd to find all keys
        -h             : this help
        -k <key>       : Sector 0 Key A.
        -n             : Use the nested cmd to find all keys

+       -p             : Use the precalc to find all keys

        -o             : filename for the saved dumps
 ]]
        -o             : filename for the saved dumps
 ]]

-
-local HASHCONSTANT = '20436F707972696768742028432920323031302041637469766973696F6E2E20416C6C205269676874732052657365727665642E20'
-
+local RANDOM = '20436F707972696768742028432920323031302041637469766973696F6E2E20416C6C205269676874732052657365727665642E20'

 local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds
 local DEBUG = false -- the debug flag
 local numBlocks = 64
 local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds
 local DEBUG = false -- the debug flag
 local numBlocks = 64


@@ -93,16 +94,6 @@ local function waitCmd()
        return nil, "No response from device"
 end
 
        return nil, "No response from device"
 end
 

-local function computeCrc16(s)
-       local hash = core.crc16(utils.ConvertHexToAscii(s))     
-       return hash
-end
-
-local function reverseCrcBytes(crc)
-       crc2 = crc:sub(3,4)..crc:sub(1,2)
-       return tonumber(crc2,16)
-end
-

 local function main(args)
 
        print( string.rep('--',20) )
 local function main(args)
 
        print( string.rep('--',20) )


@@ -112,18 +103,20 @@ local function main(args)
        local cmd
        local err
        local useNested = false
        local cmd
        local err
        local useNested = false

+       local usePreCalc = false

        local cmdReadBlockString = 'hf mf rdbl %d A %s'
        local input = "dumpkeys.bin"
        local outputTemplate = os.date("toydump_%Y-%m-%d_%H%M%S");
 
        -- Arguments for the script
        local cmdReadBlockString = 'hf mf rdbl %d A %s'
        local input = "dumpkeys.bin"
        local outputTemplate = os.date("toydump_%Y-%m-%d_%H%M%S");
 
        -- Arguments for the script

-       for o, a in getopt.getopt(args, 'hk:no:') do
+       for o, a in getopt.getopt(args, 'hk:npo:') do

                if o == "h" then return help() end              
                if o == "k" then keyA = a end
                if o == "n" then useNested = true end
                if o == "h" then return help() end              
                if o == "k" then keyA = a end
                if o == "n" then useNested = true end

+               if o == "p" then usePreCalc = true end

                if o == "o" then outputTemplate = a end         
        end
                if o == "o" then outputTemplate = a end         
        end

-
+       

        -- validate input args.
        keyA =  keyA or '4b0b20107ccb'
        if #(keyA) ~= 12 then
        -- validate input args.
        keyA =  keyA or '4b0b20107ccb'
        if #(keyA) ~= 12 then


@@ -134,37 +127,38 @@ local function main(args)
        local cmdSetDbgOff = "hf mf dbg 0"
        core.console( cmdSetDbgOff) 
        
        local cmdSetDbgOff = "hf mf dbg 0"
        core.console( cmdSetDbgOff) 
        

-       result, err = lib14a.read1443a(false)
+       result, err = lib14a.read14443a(false, true)

        if not result then
                return oops(err)
        end
 
        core.clearCommandBuffer()
        
        if not result then
                return oops(err)
        end
 
        core.clearCommandBuffer()
        

-       if 0x01 ~= result.sak then -- NXP MIFARE TNP3xxx
-               return oops('This is not a TNP3xxx tag. aborting.')
-       end     
-

        -- Show tag info
        -- Show tag info

-       print((' Found tag : %s'):format(result.name))
-       print(('Using keyA : %s'):format(keyA))
+       print((' Found tag %s'):format(result.name))
+
+       dbg(('Using keyA : %s'):format(keyA))

 
        --Trying to find the other keys
        if useNested then
          core.console( ('hf mf nested 1 0 A %s d'):format(keyA) )
        end
 
        --Trying to find the other keys
        if useNested then
          core.console( ('hf mf nested 1 0 A %s d'):format(keyA) )
        end

-       
+

        core.clearCommandBuffer()
        
        core.clearCommandBuffer()
        

-       -- Loading keyfile
-       print('Loading dumpkeys.bin')
-       local hex, err = utils.ReadDumpFile(input)
-       if not hex then
-               return oops(err)
+       local akeys = ''
+       if usePreCalc then
+               local pre = require('precalc')
+               akeys = pre.GetAll(result.uid)
+       else
+               print('Loading dumpkeys.bin')
+               local hex, err = utils.ReadDumpFile(input)
+               if not hex then
+                       return oops(err)
+               end
+               akeys = hex:sub(0,12*16)

        end
        end

-
-       local akeys = hex:sub(0,12*16)
-
+       

        -- Read block 0
        cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = 0,arg2 = 0,arg3 = 0, data = keyA}
        err = core.SendCommand(cmd:getBytes())
        -- Read block 0
        cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = 0,arg2 = 0,arg3 = 0, data = keyA}
        err = core.SendCommand(cmd:getBytes())


@@ -179,6 +173,8 @@ local function main(args)
        local block1, err = waitCmd()
        if err then return oops(err) end
 
        local block1, err = waitCmd()
        if err then return oops(err) end
 

+       local tmpHash = block0..block1..'%02x'..RANDOM
+

        local key
        local pos = 0
        local blockNo
        local key
        local pos = 0
        local blockNo


@@ -188,7 +184,7 @@ local function main(args)
        core.clearCommandBuffer()
                
        -- main loop
        core.clearCommandBuffer()
                
        -- main loop

-       io.write('Decrypting blocks > ')
+       io.write('Reading blocks > ')

        for blockNo = 0, numBlocks-1, 1 do
 
                if core.ukbhit() then
        for blockNo = 0, numBlocks-1, 1 do
 
                if core.ukbhit() then


@@ -204,25 +200,24 @@ local function main(args)
                local blockdata, err = waitCmd()
                if err then return oops(err) end                
 
                local blockdata, err = waitCmd()
                if err then return oops(err) end                
 

+

                if  blockNo%4 ~= 3 then
                if  blockNo%4 ~= 3 then

+               

                        if blockNo < 8 then
                                -- Block 0-7 not encrypted
                        if blockNo < 8 then
                                -- Block 0-7 not encrypted

-                               blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,blockdata) 
+                               blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,blockdata)

                        else
                        else

-                               local base = ('%s%s%02x%s'):format(block0, block1, blockNo, HASHCONSTANT)       
-                               local baseStr = utils.ConvertHexToAscii(base)
-                               local md5hash = md5.sumhexa(baseStr)
-                               local aestest = core.aes(md5hash, blockdata)
-
-                               local hex = utils.ConvertAsciiToBytes(aestest)
-                               hex = utils.ConvertBytesToHex(hex)
-

                                -- blocks with zero not encrypted.
                                if string.find(blockdata, '^0+$') then
                                -- blocks with zero not encrypted.
                                if string.find(blockdata, '^0+$') then

-                                       blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,blockdata) 
+                                       blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,blockdata)

                                else
                                else

+                                       local baseStr = utils.ConvertHexToAscii(tmpHash:format(blockNo))
+                                       local key = md5.sumhexa(baseStr)
+                                       local aestest = core.aes128_decrypt(key, blockdata)
+                                       local hex = utils.ConvertAsciiToBytes(aestest)
+                                       hex = utils.ConvertBytesToHex(hex)

                                        blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,hex)
                                        blocks[blockNo+1] = ('%02d  :: %s'):format(blockNo,hex)

-                                       io.write( blockNo..',')
+                                       io.write(blockNo..',')

                                end             
                        end
                else
                                end             
                        end
                else


@@ -246,27 +241,40 @@ local function main(args)
                emldata = emldata..slice..'\n'
                for c in (str):gmatch('.') do
                        bindata[#bindata+1] = c
                emldata = emldata..slice..'\n'
                for c in (str):gmatch('.') do
                        bindata[#bindata+1] = c

-               end
+               end             

        end 
        end 

+
+       print( string.rep('--',20) )
+       
+       local uid = block0:sub(1,8)
+       local toytype = block1:sub(1,4)
+       local cardidLsw = block1:sub(9,16)
+       local cardidMsw = block1:sub(16,24)
+       local cardid = block1:sub(9,24)
+       local subtype = block1:sub(25,28)

        
        -- Write dump to files
        if not DEBUG then
        
        -- Write dump to files
        if not DEBUG then

-               local foo = dumplib.SaveAsBinary(bindata, outputTemplate..'.bin')
-               print(("Wrote a BIN dump to the file %s"):format(foo))
-               local bar = dumplib.SaveAsText(emldata, outputTemplate..'.eml')
-               print(("Wrote a EML dump to the file %s"):format(bar))
+               local foo = dumplib.SaveAsBinary(bindata, outputTemplate..'-'..uid..'.bin')
+               print(("Wrote a BIN dump to:  %s"):format(foo))
+               local bar = dumplib.SaveAsText(emldata, outputTemplate..'-'..uid..'.eml')
+               print(("Wrote a EML dump to:  %s"):format(bar))

        end
        end

+       
+       print( string.rep('--',20) )
+       -- Show info 

 
 

-       local uid = block0:sub(1,8)
-       local itemtype = block1:sub(1,4)
-       local cardid = block1:sub(9,24)
+       local item = toys.Find(toytype, subtype)
+       if item then
+               print(('            ITEM TYPE : %s - %s (%s)'):format(item[6],item[5], item[4]) )
+       else
+               print(('            ITEM TYPE : 0x%s 0x%s'):format(toytype, subtype))
+       end

 
 

-       -- Show info 
-       print( string.rep('--',20) )
-       print( (' ITEM TYPE : 0x%s - %s'):format(itemtype, toyNames[itemtype]) )
-       print( ('       UID : 0x%s'):format(uid) )
-       print( ('    CARDID : 0x%s'):format(cardid ) )  
+       print( ('                  UID : 0x%s'):format(uid) )
+       print( ('               CARDID : 0x%s'):format(cardid ) )

        print( string.rep('--',20) )
        print( string.rep('--',20) )

-
+       
+       core.clearCommandBuffer()

 end
 main(args)
\ No newline at end of file
 end
 main(args)
\ No newline at end of file