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Fixed issue #94, so lua-script 'mifare_autopwn' reacts correctly to card that are not vulnerable to darkside-attacks

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This commit is contained in:
Martin Holst Swende 2015-07-12 23:38:52 +02:00
commit 40c514454d
1 changed files with 26 additions and 3 deletions
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29
client/scripts/mifare_autopwn.lua
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@ -88,10 +88,33 @@ 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
--[[
I don't understand, they cmd and args are defined as uint32_t, however,
looking at the returned data, they all look like 64-bit things:
print("result", bin.unpack("HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH", result))
FF 00 00 00 00 00 00 00 <-- 64 bits of data
FE FF FF FF 00 00 00 00 <-- 64 bits of data
00 00 00 00 00 00 00 00 <-- 64 bits of data
00 00 00 00 00 00 00 00 <-- 64 bits of data
04 7F 12 E2 00 <-- this is where 'data' starts
So below I use LI to pick out the "FEFF FFFF", don't know why it works..
--]]
-- Unpacking the arg-parameters
local count,cmd,isOK = bin.unpack('LI',result)
--print("response", isOK)--FF FF FF FF
if isOK == 0xFFFFFFFF then
return nil, "Button pressed. Aborted."
elseif isOK == 0xFFFFFFFE then
return nil, "Card is not vulnerable to Darkside attack (doesn't send NACK on authentication requests). You can try 'script run mfkeys' or 'hf mf chk' to test various known keys."
elseif isOK == 0xFFFFFFFD then
return nil, "Card is not vulnerable to Darkside attack (its random number generator is not predictable). You can try 'script run mfkeys' or 'hf mf chk' to test various known keys."
elseif isOK ~= 1 then
return nil, "Error occurred"
end
-- The data-part is left