X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/cda2a4c0a5e9b9e2a373aeb822111237ff9ec710..ca3ed459283f056e713ab7fd5333ce2d79cc50b0:/client/scripting.c

diff --git a/client/scripting.c b/client/scripting.c
index edaa926c..5d9ce55a 100644
--- a/client/scripting.c
+++ b/client/scripting.c
@@ -16,6 +16,14 @@
 #include "cmdmain.h"
 #include "scripting.h"
 #include "util.h"
+#include "nonce2key/nonce2key.h"
+#include "../common/iso15693tools.h"
+#include "iso14443crc.h"
+#include "../common/crc16.h"
+#include "../common/crc64.h"
+#include "../common/sha1.h"
+#include "aes.h"
+#include "cmdcrc.h"
 /**
  * The following params expected:
  *  UsbCommand c
@@ -45,13 +53,12 @@ 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(data);
+    SendCommand((UsbCommand* )data);
     return 0; // no return values
 }
 /**
@@ -93,7 +100,7 @@ static int l_WaitForResponseTimeout(lua_State *L){
     if(WaitForResponseTimeout(cmd, &response, ms_timeout))
     {
         //Push it as a string
-         lua_pushlstring(L,&response,sizeof(UsbCommand));
+         lua_pushlstring(L,(const char *)&response, sizeof(UsbCommand));
 
         return 1;// return 1 to signal one return value
     }else{
@@ -102,10 +109,66 @@ 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 l_PrintAndLog(lua_State *L){ return CmdHF14AMfDump(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();
+    return 0;
 }
 /**
  * @brief l_foobar is a dummy function to test lua-integration with
@@ -119,12 +182,21 @@ 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,&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
@@ -135,17 +207,314 @@ 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)
+	*/
+	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;	
+}
+
+static int l_reveng_models(lua_State *L){
+
+	char *models[80];
+	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);
+
+	uint8_t width[80];
+	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},
-        {"PrintAndLog",                 l_PrintAndLog},
+        //{"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},
+		{"reveng_models",				l_reveng_models},
+		{"reveng_runmodel",				l_reveng_RunModel},
         {NULL, NULL}
     };
 
@@ -164,5 +533,10 @@ 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;
 }