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CHG - some lua functions in utils.lua

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This commit is contained in:
iceman1001 2014-11-13 20:14:14 +01:00
commit f91f0ebb35
3 changed files with 101 additions and 64 deletions
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69
client/scripts/tnp3.lua
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@ -28,10 +28,10 @@ Arguments:
-o : filename for the saved dumps
]]
local hashconstant = '20436F707972696768742028432920323031302041637469766973696F6E2E20416C6C205269676874732052657365727665642E20'
local HASHCONSTANT = '20436F707972696768742028432920323031302041637469766973696F6E2E20416C6C205269676874732052657365727665642E20'
local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds
local DEBUG = true -- the debug flag
local DEBUG = false -- the debug flag
local numBlocks = 64
local numSectors = 16
---
@ -154,14 +154,17 @@ local function main(args)
core.console( ('hf mf nested 1 0 A %s d'):format(keyA) )
end
core.clearCommandBuffer()
-- Loading keyfile
print('Loading dumpkeys.bin')
local infile = io.open(input, "rb")
if infile == nil then
return oops('Could not read file ', input)
local hex, err = utils.ReadDumpFile(input)
if not hex then
return oops(err)
end
local akeys = readdumpkeys(infile):sub(0,12*16)
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())
@ -206,13 +209,13 @@ local function main(args)
-- Block 0-7 not encrypted
blocks[blockNo+1] = ('%02d :: %s'):format(blockNo,blockdata)
else
local base = ('%s%s%02x%s'):format(block0, block1, blockNo, hashconstant)
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.ConvertAsciiStringToBytes(aestest)
hex = utils.ConvertBytes2HexString(hex)
local hex = utils.ConvertAsciiToBytes(aestest)
hex = utils.ConvertBytesToHex(hex)
--local _,hex = bin.unpack(("H%d"):format(16),aestest)
-- blocks with zero not encrypted.
@ -238,8 +241,8 @@ local function main(args)
for _,s in pairs(blocks) do
local slice = s:sub(8,#s)
local str = utils.ConvertBytesToAsciiString(
utils.ConvertHexStringToBytes(slice)
local str = utils.ConvertBytesToAscii(
utils.ConvertHexToBytes(slice)
)
emldata = emldata..slice..'\n'
for c in (str):gmatch('.') do
@ -266,47 +269,5 @@ local function main(args)
print( (' CARDID : 0x%s'):format(cardid ) )
print( string.rep('--',20) )
print('Validating checksums')
-- Checksum Typ 0
local test1 = ('%s%s'):format(block0, block1:sub(1,28))
local crc = block1:sub(29,32)
local revcrc = reverseCrcBytes(crc)
io.write( ('BLOCK 0-1 : %04x = %04x \n'):format(revcrc,computeCrc16(test1)))
-- Checksum Typ 1 BLOCK 9
local block9 = blocks[9]:sub(8,35)
test1 = ('%s0500'):format(block9)
crc = blocks[9]:sub(36,39)
revcrc = reverseCrcBytes(crc)
io.write( ('BLOCK 8 : %04x = %04x \n'):format(revcrc,computeCrc16(test1)))
-- Checksum Typ 1 BLOCK 37
local block37 = blocks[37]:sub(8,35)
test1 = ('%s0500'):format(block37)
crc = blocks[37]:sub(36,39)
revcrc = reverseCrcBytes(crc)
io.write( ('BLOCK 36 : %04x = %04x \n'):format(revcrc,computeCrc16(test1)))
-- Checksum Typ 2
-- 10,11,13
test1 = blocks[10]:sub(8,39)..
blocks[11]:sub(8,39)..
blocks[13]:sub(8,39)
crc = blocks[9]:sub(32,35)
revcrc = reverseCrcBytes(crc)
io.write( ('BLOCK 10-11-13 :%04x = %04x \n'):format(revcrc,computeCrc16(test1)))
-- Checksum Typ 3
-- 15,17,18,19
crc = blocks[9]:sub(28,31)
revcrc = reverseCrcBytes(crc)
test1 = blocks[14]:sub(8,39)..
blocks[15]:sub(8,39)..
blocks[17]:sub(8,39)
local tohash = test1..string.rep('00',0xe0)
local hashed = computeCrc16(tohash)
io.write( ('BLOCK 14-15-17 %04x = %04x \n'):format(revcrc,hashed))
end
main(args)