mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-09-20 23:36:31 +08:00
b915fda392
FIX: a solution for the issue "hf eload, esave, cload, save - filepath variable too short" CHG: minor code clean up. ADD: AES / CRC16 for lua. (and tnp3xx scripts.) ADD: tnp3dump.lua script to dump tnp3xx tags. ADD: tnp3sim.lua script to let PM3 imitate an tnp3xx tag. Needs to be tested live
341 lines
10 KiB
C
341 lines
10 KiB
C
//-----------------------------------------------------------------------------
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// Copyright (C) 2013 m h swende <martin at swende.se>
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Some lua scripting glue to proxmark core.
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//-----------------------------------------------------------------------------
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#include <lua.h>
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#include <lualib.h>
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#include <lauxlib.h>
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#include "proxmark3.h"
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#include "usb_cmd.h"
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#include "cmdmain.h"
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#include "scripting.h"
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#include "util.h"
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#include "nonce2key/nonce2key.h"
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#include "../common/iso15693tools.h"
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#include <openssl/aes.h>
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#include "../common/crc16.h"
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/**
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* The following params expected:
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* UsbCommand c
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*@brief l_SendCommand
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* @param L
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* @return
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*/
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static int l_SendCommand(lua_State *L){
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/*
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*
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The SendCommand (native) expects the following structure:
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typedef struct {
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uint64_t cmd; //8 bytes
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uint64_t arg[3]; // 8*3 bytes = 24 bytes
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union {
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uint8_t asBytes[USB_CMD_DATA_SIZE]; // 1 byte * 512 = 512 bytes (OR)
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uint32_t asDwords[USB_CMD_DATA_SIZE/4]; // 4 byte * 128 = 512 bytes
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} d;
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} PACKED UsbCommand;
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==> A 544 byte buffer will do.
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**/
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//Pop cmd
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size_t size;
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const char *data = luaL_checklstring(L, 1, &size);
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if(size != sizeof(UsbCommand))
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{
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printf("Got data size %d, expected %d" , (int) size,(int) sizeof(UsbCommand));
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lua_pushstring(L,"Wrong data size");
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return 1;
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}
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// UsbCommand c = (*data);
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SendCommand((UsbCommand* )data);
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return 0; // no return values
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}
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/**
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* @brief The following params expected:
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* uint32_t cmd
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* size_t ms_timeout
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* @param L
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* @return
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*/
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static int l_WaitForResponseTimeout(lua_State *L){
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uint32_t cmd = 0;
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size_t ms_timeout = -1;
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//Check number of arguments
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int n = lua_gettop(L);
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if(n == 0)
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{
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//signal error by returning Nil, errorstring
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lua_pushnil(L);
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lua_pushstring(L,"You need to supply at least command to wait for");
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return 2; // two return values
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}
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if(n >= 1)
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{
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//pop cmd
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cmd = luaL_checkunsigned(L,1);
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}
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if(n >= 2)
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{
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//Did the user send a timeout ?
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//Check if the current top of stack is an integer
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ms_timeout = luaL_checkunsigned(L,2);
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//printf("Timeout set to %dms\n" , (int) ms_timeout);
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}
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UsbCommand response;
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if(WaitForResponseTimeout(cmd, &response, ms_timeout))
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{
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//Push it as a string
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lua_pushlstring(L,(const char *)&response,sizeof(UsbCommand));
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return 1;// return 1 to signal one return value
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}else{
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//Push a Nil instead
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lua_pushnil(L);
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return 1;// one return value
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}
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}
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static int returnToLuaWithError(lua_State *L, const char* fmt, ...)
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{
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char buffer[200];
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va_list args;
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va_start(args,fmt);
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vsnprintf(buffer, sizeof(buffer), fmt,args);
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va_end(args);
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lua_pushnil(L);
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lua_pushstring(L,buffer);
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return 2;
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}
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static int l_nonce2key(lua_State *L){
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size_t size;
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const char *p_uid = luaL_checklstring(L, 1, &size);
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if(size != 4) return returnToLuaWithError(L,"Wrong size of uid, got %d bytes, expected 4", (int) size);
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const char *p_nt = luaL_checklstring(L, 2, &size);
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if(size != 4) return returnToLuaWithError(L,"Wrong size of nt, got %d bytes, expected 4", (int) size);
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const char *p_nr = luaL_checklstring(L, 3, &size);
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if(size != 4) return returnToLuaWithError(L,"Wrong size of nr, got %d bytes, expected 4", (int) size);
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const char *p_par_info = luaL_checklstring(L, 4, &size);
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if(size != 8) return returnToLuaWithError(L,"Wrong size of par_info, got %d bytes, expected 8", (int) size);
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const char *p_pks_info = luaL_checklstring(L, 5, &size);
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if(size != 8) return returnToLuaWithError(L,"Wrong size of ks_info, got %d bytes, expected 8", (int) size);
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uint32_t uid = bytes_to_num(( uint8_t *)p_uid,4);
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uint32_t nt = bytes_to_num(( uint8_t *)p_nt,4);
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uint32_t nr = bytes_to_num(( uint8_t*)p_nr,4);
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uint64_t par_info = bytes_to_num(( uint8_t *)p_par_info,8);
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uint64_t ks_info = bytes_to_num(( uint8_t *)p_pks_info,8);
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uint64_t key = 0;
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int retval = nonce2key(uid,nt, nr, par_info,ks_info, &key);
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//Push the retval on the stack
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lua_pushinteger(L,retval);
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//Push the key onto the stack
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uint8_t dest_key[8];
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num_to_bytes(key,sizeof(dest_key),dest_key);
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//printf("Pushing to lua stack: %012"llx"\n",key);
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lua_pushlstring(L,(const char *) dest_key,sizeof(dest_key));
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return 2; //Two return values
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}
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//static int l_PrintAndLog(lua_State *L){ return CmdHF14AMfDump(luaL_checkstring(L, 1));}
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static int l_clearCommandBuffer(lua_State *L){
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clearCommandBuffer();
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return 0;
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}
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/**
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* @brief l_foobar is a dummy function to test lua-integration with
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* @param L
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* @return
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*/
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static int l_foobar(lua_State *L)
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{
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//Check number of arguments
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int n = lua_gettop(L);
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printf("foobar called with %d arguments" , n);
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lua_settop(L, 0);
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printf("Arguments discarded, stack now contains %d elements", lua_gettop(L));
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// todo: this is not used, where was it intended for?
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// UsbCommand response = {CMD_MIFARE_READBL, {1337, 1338, 1339}};
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printf("Now returning a uint64_t as a string");
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uint64_t x = 0xDEADBEEF;
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uint8_t destination[8];
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num_to_bytes(x,sizeof(x),destination);
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lua_pushlstring(L,(const char *)&x,sizeof(x));
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lua_pushlstring(L,(const char *)destination,sizeof(destination));
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return 2;
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}
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/**
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* @brief Utility to check if a key has been pressed by the user. This method does not block.
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* @param L
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* @return boolean, true if kbhit, false otherwise.
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*/
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static int l_ukbhit(lua_State *L)
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{
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lua_pushboolean(L,ukbhit() ? true : false);
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return 1;
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}
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/**
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* @brief Calls the command line parser to deal with the command. This enables
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* lua-scripts to do stuff like "core.console('hf mf mifare')"
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* @param L
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* @return
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*/
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static int l_CmdConsole(lua_State *L)
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{
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CommandReceived((char *)luaL_checkstring(L, 1));
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return 0;
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}
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static int l_iso15693_crc(lua_State *L)
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{
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// uint16_t Iso15693Crc(uint8_t *v, int n);
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size_t size;
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const char *v = luaL_checklstring(L, 1, &size);
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uint16_t retval = Iso15693Crc((uint8_t *) v, size);
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lua_pushinteger(L, (int) retval);
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return 1;
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}
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/*
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Simple AES 128 cbc hook up to OpenSSL.
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params: key, input
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*/
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static int l_aes(lua_State *L)
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{
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//Check number of arguments
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int i;
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size_t size;
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const char *p_key = luaL_checklstring(L, 1, &size);
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if(size != 32) return returnToLuaWithError(L,"Wrong size of key, got %d bytes, expected 32", (int) size);
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const char *p_encTxt = luaL_checklstring(L, 2, &size);
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unsigned char indata[AES_BLOCK_SIZE] = {0x00};
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unsigned char outdata[AES_BLOCK_SIZE] = {0x00};
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unsigned char aes_key[AES_BLOCK_SIZE] = {0x00};
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unsigned char iv[AES_BLOCK_SIZE] = {0x00};
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// convert key to bytearray
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for (i = 0; i < 32; i += 2) {
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sscanf(&p_encTxt[i], "%02x", (unsigned int *)&indata[i / 2]);
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}
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// convert input to bytearray
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for (i = 0; i < 32; i += 2) {
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sscanf(&p_key[i], "%02x", (unsigned int *)&aes_key[i / 2]);
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}
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AES_KEY key;
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AES_set_decrypt_key(aes_key, 128, &key);
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AES_cbc_encrypt(indata, outdata, sizeof(indata), &key, iv, AES_DECRYPT);
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//Push decrypted array as a string
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lua_pushlstring(L,(const char *)&outdata, sizeof(outdata));
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return 1;// return 1 to signal one return value
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}
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static int l_crc16(lua_State *L)
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{
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size_t size;
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const char *p_str = luaL_checklstring(L, 1, &size);
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uint16_t retval = crc16_ccitt( (uint8_t*) p_str, size);
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lua_pushinteger(L, (int) retval);
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return 1;
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}
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/**
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* @brief Sets the lua path to include "./lualibs/?.lua", in order for a script to be
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* able to do "require('foobar')" if foobar.lua is within lualibs folder.
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* Taken from http://stackoverflow.com/questions/4125971/setting-the-global-lua-path-variable-from-c-c
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* @param L
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* @param path
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* @return
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*/
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int setLuaPath( lua_State* L, const char* path )
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{
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lua_getglobal( L, "package" );
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lua_getfield( L, -1, "path" ); // get field "path" from table at top of stack (-1)
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const char* cur_path = lua_tostring( L, -1 ); // grab path string from top of stack
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int requiredLength = strlen(cur_path)+ strlen(path)+10; //A few bytes too many, whatever we can afford it
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char * buf = malloc(requiredLength);
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snprintf(buf, requiredLength, "%s;%s", cur_path, path);
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lua_pop( L, 1 ); // get rid of the string on the stack we just pushed on line 5
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lua_pushstring( L, buf ); // push the new one
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lua_setfield( L, -2, "path" ); // set the field "path" in table at -2 with value at top of stack
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lua_pop( L, 1 ); // get rid of package table from top of stack
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return 0; // all done!
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}
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int set_pm3_libraries(lua_State *L)
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{
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static const luaL_Reg libs[] = {
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{"SendCommand", l_SendCommand},
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{"WaitForResponseTimeout", l_WaitForResponseTimeout},
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{"nonce2key", l_nonce2key},
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//{"PrintAndLog", l_PrintAndLog},
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{"foobar", l_foobar},
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{"ukbhit", l_ukbhit},
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{"clearCommandBuffer", l_clearCommandBuffer},
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{"console", l_CmdConsole},
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{"iso15693_crc", l_iso15693_crc},
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{"aes", l_aes},
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{"crc16", l_crc16},
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{NULL, NULL}
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};
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lua_pushglobaltable(L);
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// Core library is in this table. Contains '
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//this is 'pm3' table
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lua_newtable(L);
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//Put the function into the hash table.
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for (int i = 0; libs[i].name; i++) {
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lua_pushcfunction(L, libs[i].func);
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lua_setfield(L, -2, libs[i].name);//set the name, pop stack
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}
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//Name of 'core'
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lua_setfield(L, -2, "core");
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//-- remove the global environment table from the stack
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lua_pop(L, 1);
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//-- Last but not least, add to the LUA_PATH (package.path in lua)
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// so we can load libraries from the ./lualib/ - directory
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setLuaPath(L,"./lualibs/?.lua");
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return 1;
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}
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