Code improved for less memory

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

diff --git a/client/scripts/mfkeys.lua b/client/scripts/mfkeys.lua
index 135108f39366b8fb6738fc70aab1e585ca3e0bb3..e8abd0b904e411c2e2a2d27ba6ee991f793e7dcb 100644 (file)
--- a/client/scripts/mfkeys.lua
+++ b/client/scripts/mfkeys.lua
@@ -1,23 +1,30 @@
 --[[
        This is an example of Lua-scripting within proxmark3. This is a lua-side
 --[[
        This is an example of Lua-scripting within proxmark3. This is a lua-side

-       implementation of hf mf chk  
+       implementation of hf mf chk

 
        This code is licensed to you under the terms of the GNU GPL, version 2 or,
        at your option, any later version. See the LICENSE.txt file for the text of
        the license.
 
        This code is licensed to you under the terms of the GNU GPL, version 2 or,
        at your option, any later version. See the LICENSE.txt file for the text of
        the license.

-       
+

        Copyright (C) 2013 m h swende <martin at swende.se>
        Copyright (C) 2013 m h swende <martin at swende.se>

-]]
+--]]

 -- Loads the commands-library
 local cmds = require('commands')
 -- Load the default keys
 local keys = require('mf_default_keys')
 -- Loads the commands-library
 local cmds = require('commands')
 -- Load the default keys
 local keys = require('mf_default_keys')

-local desc = 
-("This script implements check keys. It utilises a large list of default keys (currently %d keys).\
+-- Ability to read what card is there
+local reader = require('read14a')
+-- Asks the user for input
+local utils = require('utils')
+
+
+local desc = ("This script implements check keys. \
+It utilises a large list of default keys (currently %d keys).\

 If you want to add more, just put them inside mf_default_keys.lua. "):format(#keys)
 
 local TIMEOUT = 10000 -- 10 seconds
 
 If you want to add more, just put them inside mf_default_keys.lua. "):format(#keys)
 
 local TIMEOUT = 10000 -- 10 seconds
 

+

 local function checkCommand(command)
 
        --print("Sending this command : " .. tostring(command))
 local function checkCommand(command)
 
        --print("Sending this command : " .. tostring(command))


@@ -42,25 +49,26 @@ end
 
 
 function checkBlock(blockNo, keys, keyType)
 
 
 function checkBlock(blockNo, keys, keyType)

-       -- The command data is only 512 bytes, each key is 6 bytes, meaning that we can send max 85 keys in one go. 
+       -- The command data is only 512 bytes, each key is 6 bytes, meaning that we can send max 85 keys in one go.

        -- If there's more, we need to split it up
        local start, remaining= 1, #keys
        -- If there's more, we need to split it up
        local start, remaining= 1, #keys

+       local arg1 = bit32.bor(bit32.lshift(keyType, 8), blockNo)

        local packets = {}
        while remaining > 0 do
                local n,data = remaining, nil
                if remaining > 85 then n = 85 end
        local packets = {}
        while remaining > 0 do
                local n,data = remaining, nil
                if remaining > 85 then n = 85 end

-               local data = table.concat(keys,"",start,n)
+               local data = table.concat(keys, "", start, start + n - 1)

                --print("data",data)
                --print("data len", #data)
                print(("Testing block %d, keytype %d, with %d keys"):format(blockNo, keyType, n))
                --print("data",data)
                --print("data len", #data)
                print(("Testing block %d, keytype %d, with %d keys"):format(blockNo, keyType, n))

-               local command = Command:new{cmd = cmds.CMD_MIFARE_CHKKEYS, 
-                                                               arg1 = blockNo, 
-                                                               arg2 = keyType, 
-                                                               arg3 = n, 
+               local command = Command:new{cmd = cmds.CMD_MIFARE_CHKKEYS,
+                                                               arg1 = arg1,
+                                                               arg2 = 1,
+                                                               arg3 = n,

                                                                data = data}
                local status = checkCommand(command)
                if status then return status, blockNo end
                                                                data = data}
                local status = checkCommand(command)
                if status then return status, blockNo end

-               start = start+n+1
+               start = start + n

                remaining = remaining - n
        end
        return nil
                remaining = remaining - n
        end
        return nil


@@ -77,58 +85,111 @@ local function displayresults(results)
        for sector,_ in pairs(results) do
                blockNo, keyA, keyB = unpack(_)
 
        for sector,_ in pairs(results) do
                blockNo, keyA, keyB = unpack(_)
 

-               print(("| %3d  | %3d |%s|%s|"):format(sector, blockNo, keyA, keyB ))
+               print(("| %3d  | %3d |%12s|%12s|"):format(sector, blockNo, keyA, keyB))

        end
        print("|--------------------------------------|")
 
 end
        end
        print("|--------------------------------------|")
 
 end

+

 -- A little helper to place an item first in the list
 local function placeFirst(akey, list)
 -- A little helper to place an item first in the list
 local function placeFirst(akey, list)

-       akey  = akey:lower()
-       if list[1] == akey then 
+       akey = akey:lower()
+       if list[1] == akey then

                -- Already at pole position
                return list
        end
        local result = {akey}
        --print(("Putting '%s' first"):format(akey))
        for i,v in ipairs(list) do
                -- Already at pole position
                return list
        end
        local result = {akey}
        --print(("Putting '%s' first"):format(akey))
        for i,v in ipairs(list) do

-               if v ~= akey then 
+               if v ~= akey then

                        result[#result+1] = v
                end
        end
        return result
 end
 
                        result[#result+1] = v
                end
        end
        return result
 end
 

-local function main()
+local function dumptofile(results)
+       local sector, blockNo, keyA, keyB,_
+
+       if utils.confirm("Do you wish to save the keys to dumpfile?") then
+               local destination = utils.input("Select a filename to store to", "dumpkeys.bin")
+               local file = io.open(destination, "w")
+               if file == nil then
+                       print("Could not write to file ", destination)
+                       return
+               end
+
+               local key_a = ""
+               local key_b = ""
+
+               for sector,_ in pairs(results) do
+                       blockNo, keyA, keyB = unpack(_)
+                       key_a = key_a .. bin.pack("H",keyA);
+                       key_b = key_b .. bin.pack("H",keyB);
+               end
+               file:write(key_a)
+               file:write(key_b)
+               file:close()
+       end
+end
+
+
+local function main(args)

 
        print(desc);
 
 
        print(desc);
 

+       result, err = reader.read14443a(false, true)
+       if not result then
+               print(err)
+               return
+       end
+       print(("Found a %s tag"):format(result.name))
+
+

        core.clearCommandBuffer()
        local blockNo
        local keyType = 0 -- A=0, B=1
        core.clearCommandBuffer()
        local blockNo
        local keyType = 0 -- A=0, B=1

-       local result = {}
-       for sector=1,40,1 do
+       local numSectors = 16
+
+       if 0x18 == result.sak then -- NXP MIFARE Classic 4k | Plus 4k
+               -- IFARE Classic 4K offers 4096 bytes split into forty sectors,
+               -- of which 32 are same size as in the 1K with eight more that are quadruple size sectors.
+               numSectors = 40
+       elseif 0x08 == result.sak then -- NXP MIFARE CLASSIC 1k | Plus 2k
+               -- 1K offers 1024 bytes of data storage, split into 16 sector
+               numSectors = 16
+       elseif 0x09 == result.sak then -- NXP MIFARE Mini 0.3k
+               -- MIFARE Classic mini offers 320 bytes split into five sectors.
+               numSectors = 5
+       elseif 0x10 == result.sak then -- NXP MIFARE Plus 2k
+               numSectors = 32
+       else
+               print("I don't know how many sectors there are on this type of card, defaulting to 16")
+       end
+
+       result = {}
+       for sector=1,numSectors,1 do

 
                --[[
 
                --[[

-               The mifare Classic 1k card has 16 sectors of 4 data blocks each. The
-               first 32 sectors of a mifare Classic 4k card consists of 4 data blocks and the remaining
-               8 sectors consist of 16 data blocks. 
+               The mifare Classic 1k card has 16 sectors of 4 data blocks each.
+               The first 32 sectors of a mifare Classic 4k card consists of 4 data blocks and the remaining
+               8 sectors consist of 16 data blocks.

                --]]
                --]]

-               local blockNo = sector * 4 -1 
-               
+               local blockNo = sector * 4 - 1
+

                if sector > 32 then
                if sector > 32 then

-                       blockNo = 32*4+ (sector-32)*16 -1
+                       blockNo = 32*4 + (sector-32)*16 - 1

                end
 
                local keyA = checkBlock(blockNo, keys, 0)
                end
 
                local keyA = checkBlock(blockNo, keys, 0)

-               if keyA then keys  = placeFirst(keyA, keys) end
+               if keyA then keys = placeFirst(keyA, keys) end

                keyA = keyA or ""
 
                local keyB = checkBlock(blockNo, keys, 1)
                keyA = keyA or ""
 
                local keyB = checkBlock(blockNo, keys, 1)

-               if keyB then keys  = placeFirst(keyB, keys) end
+               if keyB then keys = placeFirst(keyB, keys) end

                keyB = keyB or ""
 
                keyB = keyB or ""
 

-               result[sector] = {blockNo, keyA, keyB }
+               result[sector] = {blockNo, keyA, keyB}

 
                -- Check if user aborted
                if core.ukbhit() then
 
                -- Check if user aborted
                if core.ukbhit() then


@@ -137,7 +198,7 @@ local function main()
                end
        end
        displayresults(result)
                end
        end
        displayresults(result)

+       dumptofile(result)

 end
 
 end
 

-main()
-
+main(args)