RfidResearchGroup/proxmark3
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CHG: removed unused code.

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FIX: moved some checks to make the script run a tad bit faster.
This commit is contained in:
iceman1001 2015-04-09 20:38:38 +02:00
parent 26b8f38b63
commit 9c09e006d6
1 changed files with 17 additions and 38 deletions
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55
client/scripts/tnp3dump.lua
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@ -30,9 +30,7 @@ Arguments:
-p : Use the precalc to find all keys
-o : filename for the saved dumps
]]
local HASHCONSTANT = '20436F707972696768742028432920323031302041637469766973696F6E2E20416C6C205269676874732052657365727665642E20'
local RANDOM = '20436F707972696768742028432920323031302041637469766973696F6E2E20416C6C205269676874732052657365727665642E20'
local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds
local DEBUG = false -- the debug flag
local numBlocks = 64
@ -96,16 +94,6 @@ local function waitCmd()
return nil, "No response from device"
end
local function computeCrc16(s)
local hash = core.crc16(utils.ConvertHexToAscii(s))
return hash
end
local function reverseCrcBytes(crc)
crc2 = crc:sub(3,4)..crc:sub(1,2)
return tonumber(crc2,16)
end
local function main(args)
print( string.rep('--',20) )
@ -146,10 +134,6 @@ local function main(args)
core.clearCommandBuffer()
if 0x01 ~= result.sak then -- NXP MIFARE TNP3xxx
-- return oops('This is not a TNP3xxx tag. aborting.')
end
-- Show tag info
print((' Found tag %s'):format(result.name))
@ -189,6 +173,8 @@ local function main(args)
local block1, err = waitCmd()
if err then return oops(err) end
local tmpHash = block0..block1..'%02x'..RANDOM
local key
local pos = 0
local blockNo
@ -221,20 +207,16 @@ 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 baseStr = utils.ConvertHexToAscii(base)
local md5hash = md5.sumhexa(baseStr)
local aestest = core.aes(md5hash, blockdata)
local hex = utils.ConvertAsciiToBytes(aestest)
hex = utils.ConvertBytesToHex(hex)
-- blocks with zero not encrypted.
if string.find(blockdata, '^0+$') then
blocks[blockNo+1] = ('%02d :: %s'):format(blockNo,blockdata)
else
blocks[blockNo+1] = ('%02d :: %s'):format(blockNo,hex)
io.write( blockNo..',')
local baseStr = utils.ConvertHexToAscii(tmpHash:format(blockNo))
local key = md5.sumhexa(baseStr)
local aestest = core.aes128_decrypt(key, blockdata)
local hex = utils.ConvertAsciiToBytes(aestest)
hex = utils.ConvertBytesToHex(hex)
blocks[blockNo+1] = ('%02d :: %s'):format(blockNo,hex)
end
end
else
@ -258,11 +240,10 @@ local function main(args)
emldata = emldata..slice..'\n'
for c in (str):gmatch('.') do
bindata[#bindata+1] = c
end
end
end
print( string.rep('--',20) )
local uid = block0:sub(1,8)
local toytype = block1:sub(1,4)
@ -273,26 +254,24 @@ local function main(args)
-- Write dump to files
if not DEBUG then
local foo = dumplib.SaveAsBinary(bindata, outputTemplate..'_uid_'..uid..'.bin')
local foo = dumplib.SaveAsBinary(bindata, outputTemplate..'-'..uid..'.bin')
print(("Wrote a BIN dump to: %s"):format(foo))
local bar = dumplib.SaveAsText(emldata, outputTemplate..'_uid_'..uid..'.eml')
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
local itemStr = ('%s - %s (%s)'):format(item[6],item[5], item[4])
print(' ITEM TYPE : '..itemStr )
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
-- Show info
print( (' Alter ego / traptype : 0x%s'):format(traptype) )
print( (' UID : 0x%s'):format(uid) )
print( (' CARDID : 0x%s'):format(cardid ) )
print( string.rep('--',20) )
end
main(args)