X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/5b760b6cac721c6abd036c0689e713b5a7c700c5..e98389b355020a7baa9a82aef200a2a25cc78f47:/client/scripting.c?ds=inline diff --git a/client/scripting.c b/client/scripting.c index f9f4999d..0c761cb2 100644 --- a/client/scripting.c +++ b/client/scripting.c @@ -8,13 +8,24 @@ // Some lua scripting glue to proxmark core. //----------------------------------------------------------------------------- +#include "scripting.h" + +#include #include #include #include #include "proxmark3.h" #include "usb_cmd.h" #include "cmdmain.h" -#include "scripting.h" +#include "util.h" +#include "mifarehost.h" +#include "../common/iso15693tools.h" +#include "iso14443crc.h" +#include "../common/crc16.h" +#include "../common/crc64.h" +#include "../common/polarssl/sha1.h" +#include "../common/polarssl/aes.h" + /** * The following params expected: * UsbCommand c @@ -24,26 +35,34 @@ */ static int l_SendCommand(lua_State *L){ - /* - * - The SendCommand (native) expects the following structure: - - typedef struct { - uint64_t cmd; //8 bytes - uint64_t arg[3]; // 8*3 bytes = 24 bytes - union { - uint8_t asBytes[USB_CMD_DATA_SIZE]; // 1 byte * 512 = 512 bytes (OR) - uint32_t asDwords[USB_CMD_DATA_SIZE/4]; // 4 byte * 128 = 512 bytes - } d; - } PACKED UsbCommand; - - ==> A 544 byte buffer will do. - **/ - //Pop cmd - UsbCommand *c = (UsbCommand *)lua_touserdata(L, 1); - luaL_argcheck(L, c != NULL, 1, "'UsbCommand' expected"); - SendCommand(c); - return 0; + /* + * + The SendCommand (native) expects the following structure: + + typedef struct { + uint64_t cmd; //8 bytes + uint64_t arg[3]; // 8*3 bytes = 24 bytes + union { + uint8_t asBytes[USB_CMD_DATA_SIZE]; // 1 byte * 512 = 512 bytes (OR) + uint32_t asDwords[USB_CMD_DATA_SIZE/4]; // 4 byte * 128 = 512 bytes + } d; + } PACKED UsbCommand; + + ==> A 544 byte buffer will do. + **/ + //Pop cmd + size_t size; + const char *data = luaL_checklstring(L, 1, &size); + if(size != 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 } /** * @brief The following params expected: @@ -54,69 +73,396 @@ static int l_SendCommand(lua_State *L){ */ static int l_WaitForResponseTimeout(lua_State *L){ - //pop cmd - uint32_t cmd = luaL_checkunsigned(L,1); - printf("in l_WaitForResponseTimeout, got cmd 0x%0x\n",(int) cmd); - //UsbCommand response; - - //We allocate the usbcommand as userdata on the Lua-stack - size_t nbytes = sizeof(UsbCommand); - - UsbCommand *response = (UsbCommand *)lua_newuserdata(L, nbytes); - - size_t ms_timeout = 2000; - //Did the user send a timeout ? - //Check if the current top of stack is an integer - - if(lua_isnumber( L, 2)) - { - printf("You sent a timout-value\n"); - ms_timeout = luaL_checkunsigned(L,2); - } - printf("Timeout set to %dms\n" , (int) ms_timeout); - - if(WaitForResponseTimeout(cmd, response, ms_timeout)) - { - //Return the UsbCommand as userdata - //the usbcommand is already on the stack - // return 1 to signal one return value - return 1; - }else - { - //Don't return the UsbCommand. Pop it. - lua_pop(L,-1); - //Push a Nil instead - lua_pushnil(L); - return 1; - } -} -static int l_nonce2key(lua_State *L){ return CmdHF14AMfRdSc(luaL_checkstring(L, 1));} -static int l_PrintAndLog(lua_State *L){ return CmdHF14AMfDump(luaL_checkstring(L, 1));} - -void set_pm3_libraries(lua_State *L) + uint32_t cmd = 0; + size_t ms_timeout = -1; + + //Check number of arguments + int n = lua_gettop(L); + if(n == 0) + { + //signal error by returning Nil, errorstring + lua_pushnil(L); + lua_pushstring(L,"You need to supply at least command to wait for"); + return 2; // two return values + } + if(n >= 1) + { + //pop cmd + cmd = luaL_checkunsigned(L,1); + } + if(n >= 2) + { + //Did the user send a timeout ? + //Check if the current top of stack is an integer + ms_timeout = luaL_checkunsigned(L,2); + //printf("Timeout set to %dms\n" , (int) ms_timeout); + } + + UsbCommand response; + + if(WaitForResponseTimeout(cmd, &response, ms_timeout)) + { + //Push it as a string + lua_pushlstring(L,(const char *)&response,sizeof(UsbCommand)); + + return 1;// return 1 to signal one return value + }else{ + //Push a Nil instead + lua_pushnil(L); + return 1;// one return value + } +} + +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_mfDarkside(lua_State *L){ + + uint64_t key; + + int retval = mfDarkside(&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" PRIx64 "\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(); + return 0; +} +/** + * @brief l_foobar is a dummy function to test lua-integration with + * @param L + * @return + */ +static int l_foobar(lua_State *L) +{ + //Check number of arguments + int n = lua_gettop(L); + printf("foobar called with %d arguments" , n); + lua_settop(L, 0); + printf("Arguments discarded, stack now contains %d elements", lua_gettop(L)); + + // 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 + * @return boolean, true if kbhit, false otherwise. + */ +static int l_ukbhit(lua_State *L) { - static const luaL_Reg libs[] = { - {"SendCommand", l_SendCommand}, - {"WaitForResponseTimeout", l_WaitForResponseTimeout}, - {"nonce2key", l_nonce2key}, - {"PrintAndLog", l_PrintAndLog}, - {NULL, NULL} - }; - - lua_pushglobaltable(L); - // Core library is in this table. Contains ' - //this is 'pm3' table - lua_newtable(L); - - //Put the function into the hash table. - for (int i = 0; libs[i].name; i++) { - lua_pushcfunction(L, libs[i].func); - lua_setfield(L, -2, libs[i].name);//set the name, pop stack - } - //Name of 'core' - lua_setfield(L, -2, "core"); - - //-- remove the global environment table from the stack - lua_pop(L, 1); - return 1; + 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) + */ + unsigned char buf[USB_CMD_DATA_SIZE]; + size_t len = 0; + const char *data = luaL_checklstring(L, 1, &len); + if (USB_CMD_DATA_SIZE < len) + len = USB_CMD_DATA_SIZE-2; + + for (int i = 0; i < len; i += 2) { + sscanf(&data[i], "%02x", (unsigned int *)&buf[i / 2]); + } + ComputeCrc14443(CRC_14443_B, buf, len, &buf[len], &buf[len+1]); + + lua_pushlstring(L, (const char *)&buf, len+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_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; +} + +/** + * @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}, + {"mfDarkside", l_mfDarkside}, + //{"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}, + {"crc16", l_crc16}, + {"crc64", l_crc64}, + {"sha1", l_sha1}, + {NULL, NULL} + }; + + lua_pushglobaltable(L); + // Core library is in this table. Contains ' + //this is 'pm3' table + lua_newtable(L); + + //Put the function into the hash table. + for (int i = 0; libs[i].name; i++) { + lua_pushcfunction(L, libs[i].func); + lua_setfield(L, -2, libs[i].name);//set the name, pop stack + } + //Name of 'core' + lua_setfield(L, -2, "core"); + + //-- 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 + char libraries_path[strlen(get_my_executable_directory()) + strlen(LUA_LIBRARIES_DIRECTORY) + strlen(LUA_LIBRARIES_WILDCARD) + 1]; + strcpy(libraries_path, get_my_executable_directory()); + strcat(libraries_path, LUA_LIBRARIES_DIRECTORY); + strcat(libraries_path, LUA_LIBRARIES_WILDCARD); + setLuaPath(L, libraries_path); + + return 1; }