// Some lua scripting glue to proxmark core.
//-----------------------------------------------------------------------------
+#include "scripting.h"
+
+#include <stdlib.h>
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
#include "proxmark3.h"
+#include "comms.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 <mbedtls/sha1.h>
+#include <mbedtls/aes.h>
+
/**
* The following params expected:
* UsbCommand c
*/
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:
*/
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 (len > USB_CMD_DATA_SIZE-2)
+ 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]);
+ }
+
+ mbedtls_aes_context ctx;
+ mbedtls_aes_init(&ctx);
+ mbedtls_aes_setkey_dec(&ctx, aes_key, 128);
+ mbedtls_aes_crypt_cbc(&ctx, MBEDTLS_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]);
+ }
+ mbedtls_aes_context ctx;
+ mbedtls_aes_init(&ctx);
+ mbedtls_aes_setkey_dec(&ctx, aes_key, 128);
+ mbedtls_aes_crypt_ecb(&ctx, MBEDTLS_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]);
+ }
+
+ mbedtls_aes_context ctx;
+ mbedtls_aes_init(&ctx);
+ mbedtls_aes_setkey_enc(&ctx, aes_key, 128);
+ mbedtls_aes_crypt_cbc(&ctx, MBEDTLS_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]);
+ }
+ mbedtls_aes_context ctx;
+ mbedtls_aes_init(&ctx);
+ mbedtls_aes_setkey_enc(&ctx, aes_key, 128);
+ mbedtls_aes_crypt_ecb(&ctx, MBEDTLS_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};
+ mbedtls_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;
}
projects / proxmark3-svn / blobdiff