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textual
Correcting a script name
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Winds
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231
client/luascripts/hf_writer.lua
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231
client/luascripts/hf_writer.lua
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local utils = require('utils')
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local getopt = require('getopt')
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local read14a = require('read14a')
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--[[
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---Suggestions of improvement:
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--- Add support another types of dumps: BIN, JSON
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--- Maybe it will be not only as `mfc_gen3_writer`, like a universal dump manager.
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--- Add undependence from the operation system. At the moment code not working in Linux.
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--- Add more chinesse backdoors RAW commands for UID changing (find RAW for the 4 byte familiar chinese card, from native it soft: http://bit.ly/39VIDsU)
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--- Hide system messages when you writing a dumps, replace it to some of like [#####----------] 40%
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-- iceman notes:
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-- doesn't take consideration filepaths for dump files.
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-- doesn't allow A keys for authenticating when writing
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-- doesn't verify that card is magic gen3.
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-- doesn't take several versions of same dump ( -1, -2, -3 ) styles.
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--]]
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copyright = ''
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author = 'Winds'
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version = 'v1.0.0'
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desc = [[
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The script gives you a easy way to write your *.eml dumps onto normal MFC and magic Gen3 cards.
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Works with both 4 and 7 bytes NXP MIFARE Classic 1K cards.
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The script also has the possibility to change UID and permanent lock uid on magic Gen3 cards.
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It supports the following functionality.
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1. Write it to the same of current card UID.
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2. Write it to magic Gen3 card.
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3. Change uid to match dump on magic Gen3 card.
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4. Permanent lock UID on magic Gen3 card.
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5. Erase all data at the card and set the FF FF FF FF FF FF keys, and Access Conditions to 78778800.
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Script works in a wizard styled way.
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]]
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example = [[
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1. script run mfc_gen3_writer
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]]
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usage = [[
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Select your *.eml dump from list to write to the card.
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]]
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-- Some globals
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local DEBUG = false -- the debug flag
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-------------------------------
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-- Some utilities
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-------------------------------
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---
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-- A debug printout-function
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local function dbg(args)
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if not DEBUG then return end
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if type(args) == 'table' then
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local i = 1
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while args[i] do
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dbg(args[i])
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i = i+1
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end
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else
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print('###', args)
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end
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end
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---
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-- This is only meant to be used when errors occur
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local function oops(err)
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print('ERROR:', err)
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core.clearCommandBuffer()
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return nil, err
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end
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---
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-- Usage help
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local function help()
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print(copyright)
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print(author)
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print(version)
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print(desc)
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print('Example usage')
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print(example)
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print(usage)
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end
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---
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-- GetUID
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local function GetUID()
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return read14a.read(true, true).uid
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end
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---
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--
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local function dropfield()
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read14a.disconnect()
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core.clearCommandBuffer()
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end
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---
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-- Wait for tag (MFC)
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local function wait()
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read14a.waitFor14443a()
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end
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---
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--
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local function main(args)
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-- Arguments for the script
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for o, a in getopt.getopt(args, 'hd') do
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if o == 'h' then return help() end
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if o == 'd' then DEBUG = true end
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end
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local files = {} -- Array for eml files
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local b_keys = {} -- Array for B keys
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local eml = {} -- Array for data in block 32
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local num_dumps = 0 -- num of found eml dump files
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local tab = string.rep('-', 64)
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--
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wait()
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print(tab)
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local length = 25
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local e = 16
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-- Detect 7 byte card
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if string.len(GetUID()) == 14 then
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length = 31
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e = 22
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end
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dropfield()
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---List all EML files in /client
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local dumpEML = "find '.' -iname '*dump.eml' -type f"
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local p = assert(io.popen(dumpEML))
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for _ in p:lines() do
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-- The length of eml file
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if string.len(_) == length then
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num_dumps = num_dumps + 1
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-- cut UID from eml file
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files[num_dumps] = string.sub(_, 9, e)
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print(' '..num_dumps..' | '..files[num_dumps])
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end
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end
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p.close()
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if num_dumps == 0 then return oops("Didn't find any dump files") end
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print(tab)
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print(' Your card has UID '..GetUID())
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print('')
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print(' Select which dump to write (1 until '..num_dumps..')')
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print(tab)
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io.write(' --> ')
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local no = tonumber(io.read())
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print(tab)
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print(' You have been selected card dump ' .. no .. ', with UID : '..files[no])
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--- Load eml file
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local dumpfile = assert(io.open('./hf-mf-' .. files[no] .. '-dump.eml', 'r'))
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for _ in dumpfile:lines() do table.insert(eml, _); end
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dumpfile.close()
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--- Extract B key from EML file
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local b = 0
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for i = 1, #eml do
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if (i % 4 == 0) then
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repeat
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b = b + 1
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-- Cut key from block
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b_keys[b] = string.sub(eml[i], (#eml[i] - 11), #eml[i])
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until b % 4 == 0
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end
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end
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print(tab)
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dbg(b_keys)
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dbg(eml)
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--- Change UID on certain version of magic Gen3 card.
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if (utils.confirm(' Change UID ?') == true) then
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wait()
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--core.console('hf 14a raw -s -c -t 2000 90f0cccc10'..tostring(eml[1]))
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print('hf 14a raw -s -c -t 2000 90f0cccc10'..tostring(eml[1]))
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print(tab)
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print(' The new card UID : ' .. GetUID())
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end
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print(tab)
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--- Lock UID
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if (utils.confirm(' Permanent lock UID ? (card can never change uid again) ') == true) then
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wait()
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core.console('hf 14a raw -s -c -t 2000 90fd111100')
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end
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print(tab)
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--- Writing blocks
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local default_key = 'FFFFFFFFFFFF'
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local default_key_blk = 'FFFFFFFFFFFF78778800FFFFFFFFFFFF'
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local empty = string.rep('0', 32)
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local cmd_wrbl = 'hf mf wrbl %d B %s %s'
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if (utils.confirm(' Are you using a empty card with default key?') == true) then
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wait()
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for i = 1, #eml do
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core.console(string.format(cmd_wrbl, (i-1), default_key, eml[i]))
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end
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else
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print(tab)
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if (utils.confirm(' Delete ALL data and write all keys to 0x'..default_key..' ?') == true) then
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wait()
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for i = 1, #eml do
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if (i % 4 == 0) then
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core.console(string.format(cmd_wrbl, (i-1), b_keys[i], default_key_blk))
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else
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core.console(string.format(cmd_wrbl, (i-1), b_keys[i], empty))
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end
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end
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else
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print(tab)
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print('Writing to card')
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wait()
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for i = 1, #eml do
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core.console(string.format(cmd_wrbl, (i-1), b_keys[i], eml[i]))
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end
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end
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end
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dropfield()
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print(tab)
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print('Done')
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end
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main(args)
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