the license.
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')
-- Ability to read what card is there
local reader = require('read14a')
+local getopt = require('getopt')
+
+local OR = bit32.bor
+local LSHIFT = bit32.lshift
-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)
+example =[[
+ script run mfkeys
+]]
+author = "Iceman"
+usage = "script run mfkeys"
+desc = ("This script implements Mifare check keys. It utilises a large list of default keys (currently %d keys).\
+If you want to add more, just put them inside /lualibs/mf_default_keys.lua\n"):format(#keys) ..
+[[
+
+Arguments:
+ -h : this help
+]]
local TIMEOUT = 10000 -- 10 seconds
+---
+-- Usage help
+function help()
+ print(desc)
+ print("Example usage")
+ print(example)
+end
+
+--[[This may be moved to a separate library at some point]]
+local utils =
+{
+ ---
+ -- Asks the user for Yes or No
+ confirm = function(message, ...)
+ local answer
+ message = message .. " [y]/[n] ?"
+ repeat
+ io.write(message)
+ io.flush()
+ answer=io.read()
+ if answer == 'Y' or answer == "y" then
+ return true
+ elseif answer == 'N' or answer == 'n' then
+ return false
+ end
+ until false
+ end,
+ ---
+ -- Asks the user for input
+ input = function (message , default)
+ local answer
+ if default ~= nil then
+ message = message .. " (default: ".. default.. " )"
+ end
+ message = message .." \n > "
+ io.write(message)
+ io.flush()
+ answer=io.read()
+ if answer == '' then answer = default end
+
+ return answer
+ end,
+}
+
local function checkCommand(command)
end
end
-
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.
-- If there's more, we need to split it up
local n,data = remaining, nil
if remaining > 85 then n = 85 end
local data = table.concat(keys,"",start,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,
+ arg1 = OR(blockNo, LSHIFT(keyType,8) ),
+ arg2 = 0,
arg3 = n,
data = data}
local status = checkCommand(command)
end
-- A function to display the results
+-- TODO: iceman 2016, still screws up output when a key is not found.
local function displayresults(results)
local sector, blockNo, keyA, keyB,_
- print("________________________________________")
- print("|Sector|Block| A | B |")
- print("|--------------------------------------|")
+ print("|---|----------------|---|----------------|---|")
+ print("|sec|key A |res|key B |res|")
+ print("|---|----------------|---|----------------|---|")
for sector,_ in pairs(results) do
blockNo, keyA, keyB = unpack(_)
-
- print(("| %3d | %3d |%s|%s|"):format(sector, blockNo, keyA, keyB ))
+ print(("|%03d| %s | 1 | %s | 1 |"):format(sector, keyA, keyB ))
end
- print("|--------------------------------------|")
+ print("|---|----------------|---|----------------|---|")
end
-- A little helper to place an item first in the list
end
return result
end
+local function dumptofile(results)
+ local sector, blockNo, keyA, keyB,_
-local function main()
+ 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
- print(desc);
+ 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)
+ -- Arguments for the script
+ for o, a in getopt.getopt(args, 'h') do
+ if o == "h" then return help() end
+ end
+
result, err = reader.read1443a()
if not result then
print(err)
return
end
- print(("Found a %s tag"):format(result.name))
+ print(("Found a %s tag"):format(result.name))
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
+ 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
end
end
displayresults(result)
+ dumptofile(result)
end
-main()
+main( args)
projects / proxmark3-svn / blobdiff