proxmark3/client/luascripts/tnp3dump.lua

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local cmds = require('commands')
local getopt = require('getopt')
local bin = require('bin')
local lib14a = require('read14a')
local utils = require('utils')
local md5 = require('md5')
local dumplib = require('html_dumplib')
local toys = require('default_toys')
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local ansicolors = require('ansicolors')
copyright = ''
author = 'Iceman'
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version = 'v1.0.2'
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.
]]
example = [[
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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
]]
usage = [[
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script run tnp3dump [-h] [-k <key>] [-n] [-p] [-o <filename>]
]]
arguments = [[
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-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
]]
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local PM3_SUCCESS = 0
local RANDOM = '20436F707972696768742028432920323031302041637469766973696F6E2E20416C6C205269676874732052657365727665642E20'
local DEBUG = false -- the debug flag
local numBlocks = 64
local numSectors = 16
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---
-- A debug printout-function
local function dbg(args)
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if not DEBUG then return end
if type(args) == 'table' then
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local i = 1
while result[i] do
dbg(result[i])
i = i+1
end
else
print('###', args)
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end
end
---
-- This is only meant to be used when errors occur
local function oops(err)
print('ERROR:', err)
core.clearCommandBuffer()
return nil, err
end
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---
-- Usage help
local function help()
print(copyright)
print(author)
print(version)
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print(desc)
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print(ansicolors.cyan..'Usage'..ansicolors.reset)
print(usage)
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print(ansicolors.cyan..'Arguments'..ansicolors.reset)
print(arguments)
print(ansicolors.cyan..'Example usage'..ansicolors.reset)
print(example)
end
--
-- Exit message
local function ExitMsg(msg)
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print( string.rep('--',20) )
print( string.rep('--',20) )
print(msg)
print()
end
local function readdumpkeys(infile)
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t = infile:read("*all")
len = string.len(t)
local len,hex = bin.unpack(("H%d"):format(len),t)
return hex
end
local function getblockdata(response)
if not response then
return nil, 'No response from device'
end
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if response.Status == PM3_SUCCESS then
return response.Data
else
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return nil, "Couldn't read block.. ["..response.Status.."]"
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end
end
local function main(args)
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print( string.rep('--',20) )
print( string.rep('--',20) )
local keyA, cmd, err
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local useNested = false
local usePreCalc = false
local cmdReadBlockString = 'hf mf rdbl %d A %s'
local outputTemplate = os.date("toydump_%Y-%m-%d_%H%M%S");
-- Arguments for the script
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 == "p" then usePreCalc = true end
if o == "o" then outputTemplate = a end
end
-- validate input args.
keyA = keyA or '4b0b20107ccb'
if #(keyA) ~= 12 then
return oops( string.format('Wrong length of write key (was %d) expected 12', #keyA))
end
-- Turn off Debug
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local cmdSetDbgOff = "hw dbg 0"
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core.console( cmdSetDbgOff)
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utils.Sleep(0.5)
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tag, err = lib14a.read(false, true)
if not tag then return oops(err) end
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core.clearCommandBuffer()
-- Show tag info
print((' Found tag %s'):format(tag.name))
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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
core.clearCommandBuffer()
local akeys = ''
if usePreCalc then
local pre = require('precalc')
akeys = pre.GetAll(tag.uid)
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dbg(akeys)
else
local filename = ('hf-mf-%s-key.bin'):format(tag.uid);
print('loading '..filename)
local hex, err = utils.ReadDumpFile(filename)
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if not hex then
print('loading dumpkeys.bin')
hex, err = utils.ReadDumpFile('dumpkeys.bin')
if not hex then
return oops(err)
end
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end
akeys = hex:sub(0,12*16)
end
local block0, block1
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-- Read block 0
dbg('Reading block 0')
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local blockno = '00'
local keytype = '00'
local data = ('%s%s%s'):format(blockno, keytype, keyA)
cmd = Command:newNG{cmd = cmds.CMD_HF_MIFARE_READBL, data = data}
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block0, err = getblockdata(cmd:sendNG(false))
if not block0 then return oops(err) end
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core.clearCommandBuffer()
-- Read block 1
dbg('Reading block 1')
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local blockno = '01'
data = ('%s%s%s'):format(blockno, keytype, keyA)
cmd = Command:newNG{cmd = cmds.CMD_HF_MIFARE_READBL, data = data}
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block1, err = getblockdata(cmd:sendNG(false))
if not block1 then return oops(err) end
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core.clearCommandBuffer()
local tmpHash = block0..block1..'%02x'..RANDOM
local key
local pos = 0
local blockNo
local blocks = {}
-- main loop
io.write('Reading blocks > ')
for blockNo = 0, numBlocks-1, 1 do
io.flush()
if core.kbd_enter_pressed() then
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print("aborted by user")
break
end
core.clearCommandBuffer()
pos = (math.floor( blockNo / 4 ) * 12)+1
key = akeys:sub(pos, pos + 11 )
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data = ('%02x%s%s'):format(blockNo, keytype, key)
cmd = Command:newNG{cmd = cmds.CMD_HF_MIFARE_READBL, data = data}
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local blockdata, err = getblockdata(cmd:sendNG(false))
if not blockdata then return oops(err) end
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if blockNo%4 ~= 3 then
if blockNo < 8 then
-- Block 0-7 not encrypted
blocks[blockNo+1] = ('%02d :: %s'):format(blockNo,blockdata)
else
-- blocks with zero not encrypted.
if string.find(blockdata, '^0+$') then
blocks[blockNo+1] = ('%02d :: %s'):format(blockNo,blockdata)
else
local baseStr = utils.ConvertHexToAscii(tmpHash:format(blockNo))
local key = md5.sumhexa(baseStr)
local aestest = core.aes128_decrypt(key, blockdata)
local hex = utils.ConvertAsciiToHex(aestest)
blocks[blockNo+1] = ('%02d :: %s'):format(blockNo,hex)
io.write(blockNo..',')
end
end
else
-- Sectorblocks, not encrypted
blocks[blockNo+1] = ('%02d :: %s%s'):format(blockNo,key,blockdata:sub(13,32))
end
end
io.write('\n')
core.clearCommandBuffer()
-- Print results
local bindata = {}
local emldata = ''
for _,s in pairs(blocks) do
local slice = s:sub(8,#s)
local str = utils.ConvertHexToAscii(slice)
emldata = emldata..slice..'\n'
for c in (str):gmatch('.') do
bindata[#bindata+1] = c
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
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
print( string.rep('--',20) )
-- Show info
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
print( (' UID : 0x%s'):format(uid) )
print( (' CARDID : 0x%s'):format(cardid ) )
print( string.rep('--',20) )
core.clearCommandBuffer()
end
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main(args)