local getopt = require('getopt')
copyright = ''
author = 'Kenzy Carey'
version = ''
desc = [[
.-----------------------------------------------------------------.
/ .-. .-. \
| / \ BruteSim / \ |
| |\_. | (bruteforce simulation for multiple tags) | /| |
|\| | /| by |\ | |/|
| `---' | Kenzy Carey | `---' |
| | | |
| |-----------------------------------------------------| |
\ | | /
\ / \ /
`---' `---'
*SUPPORTED TAGS: pyramid, awid, fdx, jablotron, noralsy, presco, visa2000, 14a, hid
This script uses the proxmark3 implementations of simulation to bruteforce given ranges of id.
It uses both LF and HF simulations.
-- Author note
-- I wrote this as i was doing a PACS audit. This is far from complete, but is easily expandable.
-- The idea was based on proxbrute, but i needed more options, and support for different readers.
-- I dont know LUA, so I used Brian Redbeards lf_bulk_program.lua script as a starting point, sorry if its kludgy.
]]
example = [[
-- (the above example would bruteforce pyramid tags, starting at 10:1000, ending at 10:991, and waiting 1 second between each card)
script run brutesim -r pyramid -f 10 -b 1000 -c 10 -t 1 -d down
]]
usage = [[
script run brutesim -r rfid_tag -f facility_code -b base_card_number -c count -t timeout -d direction
Arguments:
-h this help
-r *see below RFID Tag: the RFID tag to emulate
pyramid
awid
fdx
jablotron
noralsy
presco
visa2000
14a
hid
-f 0-999 facility code (dfx: country id, 14a: type)
-b 0-65535 base card number to start from
-c 1-65536 number of cards to try
-t .0-99999, pause timeout between cards (use the word 'pause' to wait for user input)
-d up, down direction to move through card numbers
]]
local DEBUG = true
local bor = bit32.bor
local bxor = bit32.bxor
local lshift = bit32.lshift
---
-- A debug printout-function
local 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
local function oops(err)
print("ERROR: ",err)
return nil,err
end
---
-- Usage help
local function help()
print(copyright)
print(version)
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
--
-- Check if a string is empty
local function isempty(s)
return s == nil or s == ''
end
-- The code below was blatantly stolen from Brian Redbeard's lf_bulk_program.lua script
local function toBits(num, bits)
bits = bits or math.max(1, select(2, math.frexp(num)))
local t = {}
for b = bits, 1, -1 do
t[b] = math.fmod(num, 2)
num = math.floor((num - t[b]) / 2)
end
return table.concat(t)
end
--
-- check for parity in bit-string.
local function evenparity(s)
local _, count = string.gsub(s, "1", "")
local p = count % 2
if (p == 0) then
return false
end
return true
end
--
-- calcs hex for HID
local function cardHex(i, f)
fac = lshift(f, 16)
id = bor(i, fac)
stream = toBits(id, 26)
high = evenparity(string.sub(stream, 0, 12)) and 1 or 0
low = not evenparity(string.sub(stream, 13)) and 1 or 0
bits = bor(lshift(id, 1), low)
bits = bor(bits, lshift(high, 25))
preamble = bor(0, lshift(1, 5))
bits = bor(bits, lshift(1, 26))
return ("%04x%08x"):format(preamble, bits)
end
--
--
local function main(args)
print( string.rep('--',20) )
print( string.rep('--',20) )
print()
for o, a in getopt.getopt(args, 'r:f:b:c:t:d:h') do -- Populate command like arguments
if o == 'r' then rfidtag = a end
if o == 'f' then facility = a end
if o == 'b' then baseid = a end
if o == 'c' then count = a end
if o == 't' then timeout = a end
if o == 'd' then direction = a end
if o == 'h' then return print(usage) end
end
-- Check to see if -r argument was passed
if isempty(rfidtag) then
print("You must supply the flag -r (rfid tag)")
print(usage)
return
end
-- Check what RFID Tag we are using
if rfidtag == 'pyramid' then
consolecommand = 'lf pyramid sim' -- set the console command
rfidtagname = 'Farpointe/Pyramid' -- set the display name
facilityrequired = 1 -- set if FC is required
elseif rfidtag == 'awid' then
consolecommand = 'lf awid sim'
rfidtagname = 'AWID'
facilityrequired = 1
elseif rfidtag == 'fdx' then -- I'm not sure why you would need to bruteforce this ¯\_(ツ)_/¯
consolecommand = 'lf fdx sim'
rfidtagname = 'FDX-B'
facilityrequired = 1
elseif rfidtag == 'jablotron' then
consolecommand = 'lf jablotron sim'
rfidtagname = 'Jablotron'
facilityrequired = 0
elseif rfidtag == 'noralsy' then
consolecommand = 'lf noralsy sim'
rfidtagname = 'Noralsy'
facilityrequired = 0
elseif rfidtag == 'presco' then
consolecommand = 'lf presco sim d'
rfidtagname = 'Presco'
facilityrequired = 0
elseif rfidtag == 'visa2000' then
consolecommand = 'lf visa2000 sim'
rfidtagname = 'Visa2000'
facilityrequired = 0
elseif rfidtag == '14a' then
consolecommand = 'hf 14a sim'
if facility == "1" then rfidtagname = 'MIFARE Classic' -- Here we use the -f option to read the 14a type instead of the facility code
elseif facility == "2" then rfidtagname = 'MIFARE Ultralight'
elseif facility == "3" then rfidtagname = 'MIFARE Desfire'
elseif facility == "4" then rfidtagname = 'ISO/IEC 14443-4'
elseif facility == "5" then rfidtagname = 'MIFARE Tnp3xxx'
else
print("Invalid 14a type (-f) supplied. Must be 1-5")
print(usage)
return
end
facilityrequired = 0 -- Disable the FC required check, as we used it for type instead of FC
elseif rfidtag == 'hid' then
consolecommand = 'lf hid sim'
rfidtagname = 'HID'
facilityrequired = 1
else -- Display error and exit out if bad RFID tag was supplied
print("Invalid rfid tag (-r) supplied")
print(usage)
return
end
if isempty(baseid) then -- Display error and exit out if no starting id is set
print("You must supply the flag -b (base id)")
print(usage)
return
end
if isempty(count) then -- Display error and exit out of no count is set
print("You must supply the flag -c (count)")
print(usage)
return
end
if facilityrequired == 1 then -- If FC is required
facilitymessage = " - Facility Code: " -- Add FC to status message
if isempty(facility) then -- If FC was left blank, display warning and set FC to 0
print("Using 0 for the facility code as -f was not supplied")
facility = 0
end
else -- If FC is not required
facility = "" -- Clear FC
facilitymessage = "" -- Remove FC from status message
end
if isempty(timeout) then -- If timeout was not supplied, show warning and set timeout to 0
print("Using 0 for the timeout as -t was not supplied")
timeout = 0
end
if isempty(direction) then -- If direction was not supplied, show warning and set direction to down
print("Using down for direction as -d was not supplied")
direction = 'down'
end
if tonumber(count) < 1 then
print("Count -c must be set to 1 or higher")
return
else
count = count -1 -- Make our count accurate by removing 1, because math
end
if direction == 'down' then -- If counting down, set up our for loop to count down
endid = baseid - count
fordirection = -1
elseif direction == 'up' then -- If counting up, set our for loop to count up
endid = baseid + count
fordirection = 1
else -- If invalid direction was set, show warning and set up our for loop to count down
print("Invalid direction (-d) supplied, using down")
endid = baseid - count
fordirection = -1
end
-- display status message
print("")
print("BruteForcing "..rfidtagname..""..facilitymessage..""..facility.." - CardNumber Start: "..baseid.." - CardNumber End: "..endid.." - TimeOut: "..timeout)
print("")
-- loop through for each count (-c)
for cardnum = baseid, endid, fordirection do
-- If rfid tag is set to HID, convert card to HEX using the stolen code above
if rfidtag == 'hid' then cardnum = cardHex(cardnum, facility) end
-- send command to proxmark
core.console(consolecommand..' '..facility..' '..cardnum)
if timeout == 'pause' then
print("Press enter to continue ...")
io.read()
else
os.execute("sleep "..timeout.."")
end
end
-- ping the proxmark to stop emulation and see if its still responding
core.console('hw ping')
end
main(args)