X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/44069c9b727c1594ab31af9fc8a9dce029b0a4c8..a8ee668770c99f651346266a506b79192e944ab3:/client/scripting.c diff --git a/client/scripting.c b/client/scripting.c index 82d6ffc9..64fb2a8f 100644 --- a/client/scripting.c +++ b/client/scripting.c @@ -1,5 +1,6 @@ //----------------------------------------------------------------------------- // Copyright (C) 2013 m h swende +// Modified 2015,2016, iceman // // This code is licensed to you under the terms of the GNU GPL, version 2 or, // at your option, any later version. See the LICENSE.txt file for the text of @@ -7,15 +8,8 @@ //----------------------------------------------------------------------------- // Some lua scripting glue to proxmark core. //----------------------------------------------------------------------------- - -#include -#include -#include -#include "proxmark3.h" -#include "usb_cmd.h" -#include "cmdmain.h" #include "scripting.h" -#include "util.h" + /** * The following params expected: * UsbCommand c @@ -45,12 +39,11 @@ static int l_SendCommand(lua_State *L){ const char *data = luaL_checklstring(L, 1, &size); if(size != sizeof(UsbCommand)) { - printf("Got data size %d, expected %d" , (int) size,(int) sizeof(UsbCommand)); + printf("Got data size %d, expected %d" , (int) size,(int) sizeof(UsbCommand)); lua_pushstring(L,"Wrong data size"); return 1; } -// UsbCommand c = (*data); SendCommand((UsbCommand* )data); return 0; // no return values } @@ -89,11 +82,10 @@ static int l_WaitForResponseTimeout(lua_State *L){ } UsbCommand response; - if(WaitForResponseTimeout(cmd, &response, ms_timeout)) { //Push it as a string - lua_pushlstring(L,(const char *)&response,sizeof(UsbCommand)); + lua_pushlstring(L,(const char *)&response, sizeof(UsbCommand)); return 1;// return 1 to signal one return value }else{ @@ -102,7 +94,62 @@ static int l_WaitForResponseTimeout(lua_State *L){ return 1;// one return value } } -//static int l_nonce2key(lua_State *L){ return CmdHF14AMfRdSc(luaL_checkstring(L, 1));} + +static int returnToLuaWithError(lua_State *L, const char* fmt, ...) +{ + char buffer[200]; + va_list args; + va_start(args,fmt); + vsnprintf(buffer, sizeof(buffer), fmt,args); + va_end(args); + + lua_pushnil(L); + lua_pushstring(L,buffer); + return 2; +} + +static int l_nonce2key(lua_State *L){ + + size_t size; + const char *p_uid = luaL_checklstring(L, 1, &size); + if(size != 4) return returnToLuaWithError(L,"Wrong size of uid, got %d bytes, expected 4", (int) size); + + const char *p_nt = luaL_checklstring(L, 2, &size); + if(size != 4) return returnToLuaWithError(L,"Wrong size of nt, got %d bytes, expected 4", (int) size); + + const char *p_nr = luaL_checklstring(L, 3, &size); + if(size != 4) return returnToLuaWithError(L,"Wrong size of nr, got %d bytes, expected 4", (int) size); + + const char *p_par_info = luaL_checklstring(L, 4, &size); + if(size != 8) return returnToLuaWithError(L,"Wrong size of par_info, got %d bytes, expected 8", (int) size); + + const char *p_pks_info = luaL_checklstring(L, 5, &size); + if(size != 8) return returnToLuaWithError(L,"Wrong size of ks_info, got %d bytes, expected 8", (int) size); + + + uint32_t uid = bytes_to_num(( uint8_t *)p_uid,4); + uint32_t nt = bytes_to_num(( uint8_t *)p_nt,4); + + uint32_t nr = bytes_to_num(( uint8_t*)p_nr,4); + uint64_t par_info = bytes_to_num(( uint8_t *)p_par_info,8); + uint64_t ks_info = bytes_to_num(( uint8_t *)p_pks_info,8); + + uint64_t key = 0; + + int retval = nonce2key(uid,nt, nr, par_info,ks_info, &key); + + //Push the retval on the stack + lua_pushinteger(L,retval); + + //Push the key onto the stack + uint8_t dest_key[8]; + num_to_bytes(key,sizeof(dest_key),dest_key); + + //printf("Pushing to lua stack: %012"llx"\n",key); + lua_pushlstring(L,(const char *) dest_key,sizeof(dest_key)); + + return 2; //Two return values +} //static int l_PrintAndLog(lua_State *L){ return CmdHF14AMfDump(luaL_checkstring(L, 1));} static int l_clearCommandBuffer(lua_State *L){ clearCommandBuffer(); @@ -120,12 +167,21 @@ static int l_foobar(lua_State *L) printf("foobar called with %d arguments" , n); lua_settop(L, 0); printf("Arguments discarded, stack now contains %d elements", lua_gettop(L)); - UsbCommand response = {CMD_MIFARE_READBL, {1337, 1338, 1339}}; - printf("Now returning a UsbCommand as a string"); - lua_pushlstring(L,(const char *)&response,sizeof(UsbCommand)); - return 1; + + // todo: this is not used, where was it intended for? + // UsbCommand response = {CMD_MIFARE_READBL, {1337, 1338, 1339}}; + + printf("Now returning a uint64_t as a string"); + uint64_t x = 0xDEADBEEF; + uint8_t destination[8]; + num_to_bytes(x,sizeof(x),destination); + lua_pushlstring(L,(const char *)&x,sizeof(x)); + lua_pushlstring(L,(const char *)destination,sizeof(destination)); + + return 2; } + /** * @brief Utility to check if a key has been pressed by the user. This method does not block. * @param L @@ -136,17 +192,325 @@ static int l_ukbhit(lua_State *L) lua_pushboolean(L,ukbhit() ? true : false); return 1; } +/** + * @brief Calls the command line parser to deal with the command. This enables + * lua-scripts to do stuff like "core.console('hf mf mifare')" + * @param L + * @return + */ +static int l_CmdConsole(lua_State *L) +{ + CommandReceived((char *)luaL_checkstring(L, 1)); + return 0; +} + +static int l_iso15693_crc(lua_State *L) +{ + // uint16_t Iso15693Crc(uint8_t *v, int n); + size_t size; + const char *v = luaL_checklstring(L, 1, &size); + uint16_t retval = Iso15693Crc((uint8_t *) v, size); + lua_pushinteger(L, (int) retval); + return 1; +} + +static int l_iso14443b_crc(lua_State *L) +{ + /* void ComputeCrc14443(int CrcType, + const unsigned char *Data, int Length, + unsigned char *TransmitFirst, + unsigned char *TransmitSecond) + */ + size_t size = 0; + const char *data = luaL_checklstring(L, 1, &size); + + unsigned char buf[USB_CMD_DATA_SIZE] = {0x00}; + + for (int i = 0; i < size; i += 2) + sscanf(&data[i], "%02x", (unsigned int *)&buf[i / 2]); + + size /= 2; + ComputeCrc14443(CRC_14443_B, buf, size, &buf[size], &buf[size+1]); + lua_pushlstring(L, (const char *)&buf, size+2); + return 1; +} + +/* + Simple AES 128 cbc hook up to OpenSSL. + params: key, input +*/ +static int l_aes128decrypt_cbc(lua_State *L) +{ + //Check number of arguments + int i; + size_t size; + const char *p_key = luaL_checklstring(L, 1, &size); + if(size != 32) return returnToLuaWithError(L,"Wrong size of key, got %d bytes, expected 32", (int) size); + + const char *p_encTxt = luaL_checklstring(L, 2, &size); + + unsigned char indata[16] = {0x00}; + unsigned char outdata[16] = {0x00}; + unsigned char aes_key[16] = {0x00}; + unsigned char iv[16] = {0x00}; + + // convert key to bytearray and convert input to bytearray + for (i = 0; i < 32; i += 2) { + sscanf(&p_encTxt[i], "%02x", (unsigned int *)&indata[i / 2]); + sscanf(&p_key[i], "%02x", (unsigned int *)&aes_key[i / 2]); + } + + aes_context ctx; + aes_init(&ctx); + aes_setkey_dec(&ctx, aes_key, 128); + aes_crypt_cbc(&ctx, AES_DECRYPT, sizeof(indata), iv, indata, outdata ); + //Push decrypted array as a string + lua_pushlstring(L,(const char *)&outdata, sizeof(outdata)); + return 1;// return 1 to signal one return value +} +static int l_aes128decrypt_ecb(lua_State *L) +{ + //Check number of arguments + int i; + size_t size; + const char *p_key = luaL_checklstring(L, 1, &size); + if(size != 32) return returnToLuaWithError(L,"Wrong size of key, got %d bytes, expected 32", (int) size); + + const char *p_encTxt = luaL_checklstring(L, 2, &size); + + unsigned char indata[16] = {0x00}; + unsigned char outdata[16] = {0x00}; + unsigned char aes_key[16] = {0x00}; + + // convert key to bytearray and convert input to bytearray + for (i = 0; i < 32; i += 2) { + sscanf(&p_encTxt[i], "%02x", (unsigned int *)&indata[i / 2]); + sscanf(&p_key[i], "%02x", (unsigned int *)&aes_key[i / 2]); + } + aes_context ctx; + aes_init(&ctx); + aes_setkey_dec(&ctx, aes_key, 128); + aes_crypt_ecb(&ctx, AES_DECRYPT, indata, outdata ); + + //Push decrypted array as a string + lua_pushlstring(L,(const char *)&outdata, sizeof(outdata)); + return 1;// return 1 to signal one return value +} + +static int l_aes128encrypt_cbc(lua_State *L) +{ + //Check number of arguments + int i; + size_t size; + const char *p_key = luaL_checklstring(L, 1, &size); + if(size != 32) return returnToLuaWithError(L,"Wrong size of key, got %d bytes, expected 32", (int) size); + + const char *p_txt = luaL_checklstring(L, 2, &size); + + unsigned char indata[16] = {0x00}; + unsigned char outdata[16] = {0x00}; + unsigned char aes_key[16] = {0x00}; + unsigned char iv[16] = {0x00}; + + for (i = 0; i < 32; i += 2) { + sscanf(&p_txt[i], "%02x", (unsigned int *)&indata[i / 2]); + sscanf(&p_key[i], "%02x", (unsigned int *)&aes_key[i / 2]); + } + + aes_context ctx; + aes_init(&ctx); + aes_setkey_enc(&ctx, aes_key, 128); + aes_crypt_cbc(&ctx, AES_ENCRYPT, sizeof(indata), iv, indata, outdata ); + //Push encrypted array as a string + lua_pushlstring(L,(const char *)&outdata, sizeof(outdata)); + return 1;// return 1 to signal one return value +} + +static int l_aes128encrypt_ecb(lua_State *L) +{ + //Check number of arguments + int i; + size_t size; + const char *p_key = luaL_checklstring(L, 1, &size); + if(size != 32) return returnToLuaWithError(L,"Wrong size of key, got %d bytes, expected 32", (int) size); + + const char *p_txt = luaL_checklstring(L, 2, &size); + + unsigned char indata[16] = {0x00}; + unsigned char outdata[16] = {0x00}; + unsigned char aes_key[16] = {0x00}; + + for (i = 0; i < 32; i += 2) { + sscanf(&p_txt[i], "%02x", (unsigned int *)&indata[i / 2]); + sscanf(&p_key[i], "%02x", (unsigned int *)&aes_key[i / 2]); + } + aes_context ctx; + aes_init(&ctx); + aes_setkey_enc(&ctx, aes_key, 128); + aes_crypt_ecb(&ctx, AES_ENCRYPT, indata, outdata ); + //Push encrypted array as a string + lua_pushlstring(L,(const char *)&outdata, sizeof(outdata)); + return 1;// return 1 to signal one return value +} + +static int l_crc8legic(lua_State *L) +{ + size_t size; + const char *p_str = luaL_checklstring(L, 1, &size); + + uint16_t retval = CRC8Legic( (uint8_t*) p_str, size); + lua_pushinteger(L, (int) retval); + return 1; +} + +static int l_crc16(lua_State *L) +{ + size_t size; + const char *p_str = luaL_checklstring(L, 1, &size); + + uint16_t retval = crc16_ccitt( (uint8_t*) p_str, size); + lua_pushinteger(L, (int) retval); + return 1; +} + +static int l_crc64(lua_State *L) +{ + size_t size; + uint64_t crc = 0; + unsigned char outdata[8] = {0x00}; + + const char *p_str = luaL_checklstring(L, 1, &size); + + crc64( (uint8_t*) p_str, size, &crc); + + outdata[0] = (uint8_t)(crc >> 56) & 0xff; + outdata[1] = (uint8_t)(crc >> 48) & 0xff; + outdata[2] = (uint8_t)(crc >> 40) & 0xff; + outdata[3] = (uint8_t)(crc >> 32) & 0xff; + outdata[4] = (uint8_t)(crc >> 24) & 0xff; + outdata[5] = (uint8_t)(crc >> 16) & 0xff; + outdata[6] = (uint8_t)(crc >> 8) & 0xff; + outdata[7] = crc & 0xff; + lua_pushlstring(L,(const char *)&outdata, sizeof(outdata)); + return 1; +} + +static int l_sha1(lua_State *L) +{ + size_t size; + const char *p_str = luaL_checklstring(L, 1, &size); + unsigned char outdata[20] = {0x00}; + sha1( (uint8_t*) p_str, size, outdata); + lua_pushlstring(L,(const char *)&outdata, sizeof(outdata)); + return 1; +} + +static int l_reveng_models(lua_State *L){ + + // This array needs to be adjusted if RevEng adds more crc-models. + char *models[100]; + int count = 0; + int in_width = luaL_checkinteger(L, 1); + + if( in_width > 89 ) return returnToLuaWithError(L,"Width cannot exceed 89, got %d", in_width); + + // This array needs to be adjusted if RevEng adds more crc-models. + uint8_t width[100]; + width[0] = (uint8_t)in_width; + int ans = GetModels(models, &count, width); + if (!ans) return 0; + + lua_newtable(L); + + for (int i = 0; i < count; i++){ + lua_pushstring(L, (const char*)models[i]); + lua_rawseti(L,-2,i+1); + free(models[i]); + } + + return 1; +} + +//Called with 4 parameters. +// inModel ,string containing the crc model name: 'CRC-8' +// inHexStr ,string containing the hex representation of the data that will be used for CRC calculations. +// reverse ,int 0/1 (bool) if 1, calculate the reverse CRC +// endian ,char, 'B','b','L','l','t','r' describing if Big-Endian or Little-Endian should be used in different combinations. +// +// outputs: string with hex representation of the CRC result +static int l_reveng_RunModel(lua_State *L){ + //-c || -v + //inModel = valid model name string - CRC-8 + //inHexStr = input hex string to calculate crc on + //reverse = reverse calc option if true + //endian = {0 = calc default endian input and output, b = big endian input and output, B = big endian output, r = right justified + // l = little endian input and output, L = little endian output only, t = left justified} + //result = calculated crc hex string + char result[50]; + + const char *inModel = luaL_checkstring(L, 1); + const char *inHexStr = luaL_checkstring(L, 2); + bool reverse = lua_toboolean(L, 3); + const char endian = luaL_checkstring(L, 4)[0]; + + //PrintAndLog("mod: %s, hex: %s, rev %d", inModel, inHexStr, reverse); + // int RunModel(char *inModel, char *inHexStr, bool reverse, char endian, char *result) + int ans = RunModel( (char *)inModel, (char *)inHexStr, reverse, endian, result); + if (!ans) + return returnToLuaWithError(L,"Reveng failed"); + + lua_pushstring(L, (const char*)result); + return 1; +} + +/** + * @brief Sets the lua path to include "./lualibs/?.lua", in order for a script to be + * able to do "require('foobar')" if foobar.lua is within lualibs folder. + * Taken from http://stackoverflow.com/questions/4125971/setting-the-global-lua-path-variable-from-c-c + * @param L + * @param path + * @return + */ +int setLuaPath( lua_State* L, const char* path ) +{ + lua_getglobal( L, "package" ); + lua_getfield( L, -1, "path" ); // get field "path" from table at top of stack (-1) + const char* cur_path = lua_tostring( L, -1 ); // grab path string from top of stack + int requiredLength = strlen(cur_path)+ strlen(path)+10; //A few bytes too many, whatever we can afford it + char * buf = malloc(requiredLength); + snprintf(buf, requiredLength, "%s;%s", cur_path, path); + lua_pop( L, 1 ); // get rid of the string on the stack we just pushed on line 5 + lua_pushstring( L, buf ); // push the new one + lua_setfield( L, -2, "path" ); // set the field "path" in table at -2 with value at top of stack + lua_pop( L, 1 ); // get rid of package table from top of stack + free(buf); + return 0; // all done! +} int set_pm3_libraries(lua_State *L) { + static const luaL_Reg libs[] = { {"SendCommand", l_SendCommand}, {"WaitForResponseTimeout", l_WaitForResponseTimeout}, - //{"nonce2key", l_nonce2key}, + {"nonce2key", l_nonce2key}, //{"PrintAndLog", l_PrintAndLog}, {"foobar", l_foobar}, {"ukbhit", l_ukbhit}, {"clearCommandBuffer", l_clearCommandBuffer}, + {"console", l_CmdConsole}, + {"iso15693_crc", l_iso15693_crc}, + {"iso14443b_crc", l_iso14443b_crc}, + {"aes128_decrypt", l_aes128decrypt_cbc}, + {"aes128_decrypt_ecb", l_aes128decrypt_ecb}, + {"aes128_encrypt", l_aes128encrypt_cbc}, + {"aes128_encrypt_ecb", l_aes128encrypt_ecb}, + {"crc8legic", l_crc8legic}, + {"crc16", l_crc16}, + {"crc64", l_crc64}, + {"sha1", l_sha1}, + {"reveng_models", l_reveng_models}, + {"reveng_runmodel", l_reveng_RunModel}, {NULL, NULL} }; @@ -165,5 +529,10 @@ int set_pm3_libraries(lua_State *L) //-- remove the global environment table from the stack lua_pop(L, 1); + + //-- Last but not least, add to the LUA_PATH (package.path in lua) + // so we can load libraries from the ./lualib/ - directory + setLuaPath(L,"./lualibs/?.lua"); + return 1; }