mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2025-03-18 03:00:58 +08:00
ADD: a minor xor script
This commit is contained in:
parent
f218d50efb
commit
84f9cf0626
1 changed files with 147 additions and 0 deletions
147
client/scripts/calc_ev1_it.lua
Normal file
147
client/scripts/calc_ev1_it.lua
Normal file
|
@ -0,0 +1,147 @@
|
|||
local bin = require('bin')
|
||||
local getopt = require('getopt')
|
||||
local utils = require('utils')
|
||||
|
||||
local bxor=bit32.bxor
|
||||
|
||||
example =[[
|
||||
script run calc_ev1_it
|
||||
script run calc_ev1_it -u 11223344556677
|
||||
]]
|
||||
author = "Iceman"
|
||||
usage = "script run calc_ev1_it -u <uid> "
|
||||
desc =[[
|
||||
Arguments:
|
||||
-h : this help
|
||||
-u <UID> : UID
|
||||
]]
|
||||
---
|
||||
-- A debug printout-function
|
||||
function dbg(args)
|
||||
if type(args) == "table" then
|
||||
local i = 1
|
||||
while args[i] do
|
||||
dbg(args[i])
|
||||
i = i+1
|
||||
end
|
||||
else
|
||||
print("###", args)
|
||||
end
|
||||
end
|
||||
---
|
||||
-- This is only meant to be used when errors occur
|
||||
function oops(err)
|
||||
print("ERROR: ",err)
|
||||
return nil,err
|
||||
end
|
||||
---
|
||||
-- Usage help
|
||||
function help()
|
||||
print(desc)
|
||||
print("Example usage")
|
||||
print(example)
|
||||
end
|
||||
--
|
||||
-- Exit message
|
||||
function exitMsg(msg)
|
||||
print( string.rep('--',20) )
|
||||
print( string.rep('--',20) )
|
||||
print(msg)
|
||||
print()
|
||||
end
|
||||
|
||||
local _xortable = {
|
||||
--[[ position, 4byte xor
|
||||
--]]
|
||||
{"00","4f2711c1"},
|
||||
{"01","07D7BB83"},
|
||||
{"02","9636EF07"},
|
||||
{"03","B5F4460E"},
|
||||
{"04","F271141C"},
|
||||
{"05","7D7BB038"},
|
||||
{"06","636EF871"},
|
||||
{"07","5F4468E3"},
|
||||
{"08","271149C7"},
|
||||
{"09","D7BB0B8F"},
|
||||
{"0A","36EF8F1E"},
|
||||
{"0B","F446863D"},
|
||||
{"0C","7114947A"},
|
||||
{"0D","7BB0B0F5"},
|
||||
{"0E","6EF8F9EB"},
|
||||
{"0F","44686BD7"},
|
||||
{"10","11494fAF"},
|
||||
{"11","BB0B075F"},
|
||||
{"12","EF8F96BE"},
|
||||
{"13","4686B57C"},
|
||||
{"14","1494F2F9"},
|
||||
{"15","B0B07DF3"},
|
||||
{"16","F8F963E6"},
|
||||
{"17","686B5FCC"},
|
||||
{"18","494F2799"},
|
||||
{"19","0B07D733"},
|
||||
{"1A","8F963667"},
|
||||
{"1B","86B5F4CE"},
|
||||
{"1C","94F2719C"},
|
||||
{"1D","B07D7B38"},
|
||||
{"1E","F9636E70"},
|
||||
{"1F","6B5F44E0"},
|
||||
}
|
||||
|
||||
local function findEntryByUid( uid )
|
||||
|
||||
-- xor UID4,UID5,UID6,UID7
|
||||
-- mod 0x20 (dec 32)
|
||||
local pos = (bxor(bxor(bxor(uid[4],uid[5]), uid[6]),uid[7])) % 32
|
||||
|
||||
-- convert to hexstring
|
||||
pos = string.format('%02X', pos)
|
||||
|
||||
for k, v in pairs(_xortable) do
|
||||
if ( v[1] == pos ) then
|
||||
return utils.ConvertHexToBytes(v[2])
|
||||
end
|
||||
end
|
||||
return nil
|
||||
end
|
||||
|
||||
local function main(args)
|
||||
|
||||
print( string.rep('--',20) )
|
||||
print( string.rep('--',20) )
|
||||
print()
|
||||
|
||||
local i,j, pwd
|
||||
local uid = '04111211121110'
|
||||
|
||||
-- Arguments for the script
|
||||
for o, a in getopt.getopt(args, 'hu:') do
|
||||
if o == "h" then return help() end
|
||||
if o == "u" then uid = a end
|
||||
end
|
||||
|
||||
-- uid string checks
|
||||
if uid == nil then return oops('empty uid string') end
|
||||
if #uid == 0 then return oops('empty uid string') end
|
||||
if #uid ~= 14 then return oops('uid wrong length. Should be 7 hex bytes') end
|
||||
|
||||
local uidbytes = utils.ConvertHexToBytes(uid)
|
||||
|
||||
local entry = findEntryByUid(uidbytes)
|
||||
if entry == nil then return oops("Can't find a xor entry") end
|
||||
|
||||
-- PWD CALC
|
||||
-- PWD0 = T0 xor B xor C xor D
|
||||
-- PWD1 = T1 xor A xor C xor E
|
||||
-- PWD2 = T2 xor A xor B xor F
|
||||
-- PWD3 = T3 xor G
|
||||
|
||||
local pwd0 = bxor( bxor( bxor( entry[1], uidbytes[2]), uidbytes[3]), uidbytes[4])
|
||||
local pwd1 = bxor( bxor( bxor( entry[2], uidbytes[1]), uidbytes[3]), uidbytes[5])
|
||||
local pwd2 = bxor( bxor( bxor( entry[3], uidbytes[1]), uidbytes[2]), uidbytes[6])
|
||||
local pwd3 = bxor( entry[4], uidbytes[7])
|
||||
|
||||
print('UID | '..uid)
|
||||
print(string.format('PWD | %02X%02X%02X%02X', pwd0, pwd1, pwd2, pwd3))
|
||||
end
|
||||
|
||||
main(args)
|
Loading…
Reference in a new issue