Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 1 | /*************************************************************************** |
| 2 | * __________ __ ___. |
| 3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| 4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| 5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| 6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| 7 | * \/ \/ \/ \/ \/ |
| 8 | * $Id$ |
| 9 | * |
| 10 | * Copyright (C) 2012 Amaury Pouly |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU General Public License |
| 14 | * as published by the Free Software Foundation; either version 2 |
| 15 | * of the License, or (at your option) any later version. |
| 16 | * |
| 17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| 18 | * KIND, either express or implied. |
| 19 | * |
| 20 | ****************************************************************************/ |
| 21 | #include <stdio.h> |
| 22 | #include <stdint.h> |
| 23 | #include <stdbool.h> |
| 24 | #include <stdlib.h> |
| 25 | #include <string.h> |
| 26 | #include <getopt.h> |
| 27 | #include <stdarg.h> |
| 28 | #include <ctype.h> |
| 29 | #include "misc.h" |
| 30 | #include "elf.h" |
| 31 | #include <sys/stat.h> |
| 32 | #include <openssl/md5.h> |
| 33 | #include "crypt.h" |
| 34 | #include "fwp.h" |
| 35 | #include "keysig_search.h" |
| 36 | |
| 37 | #ifndef MIN |
| 38 | #define MIN(a,b) ((a) < (b) ? (a) : (b)) |
| 39 | #endif |
| 40 | |
| 41 | bool g_debug = false; |
| 42 | static char *g_out_prefix = NULL; |
| 43 | static char *g_in_file = NULL; |
| 44 | bool g_force = false; |
| 45 | static const char *g_model = NULL; |
| 46 | static int g_model_index = -1; |
| 47 | static char *g_kas = NULL; |
| 48 | static char *g_key = NULL; |
| 49 | static char *g_sig = NULL; |
| 50 | |
| 51 | enum keysig_search_method_t g_keysig_search = KEYSIG_SEARCH_NONE; |
| 52 | |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 53 | #define let_the_force_flow(x) do { if(!g_force) return x; } while(0) |
| 54 | #define continue_the_force(x) if(x) let_the_force_flow(x) |
| 55 | |
| 56 | #define check_field(v_exp, v_have, str_ok, str_bad) \ |
| 57 | if((v_exp) != (v_have)) \ |
| 58 | { cprintf(RED, str_bad); let_the_force_flow(__LINE__); } \ |
| 59 | else { cprintf(RED, str_ok); } |
| 60 | |
| 61 | static void print_hex(void *p, int size, int unit) |
| 62 | { |
| 63 | uint8_t *p8 = p; |
| 64 | uint16_t *p16 = p; |
| 65 | uint32_t *p32 = p; |
| 66 | for(int i = 0; i < size; i += unit, p8++, p16++, p32++) |
| 67 | { |
| 68 | if(i != 0 && (i % 16) == 0) |
| 69 | printf("\n"); |
| 70 | if(unit == 1) |
| 71 | printf(" %02x", *p8); |
| 72 | else if(unit == 2) |
| 73 | printf(" %04x", *p16); |
| 74 | else |
| 75 | printf(" %08x", *p32); |
| 76 | } |
| 77 | } |
| 78 | |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 79 | static void usage(void); |
| 80 | |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 81 | /* key and signature */ |
| 82 | struct nwz_kas_t |
| 83 | { |
| 84 | char kas[NWZ_KAS_SIZE]; |
| 85 | }; |
| 86 | |
| 87 | #define HAS_KAS (1 << 0) |
| 88 | #define HAS_KEY (1 << 1) |
| 89 | #define HAS_SIG (1 << 2) |
| 90 | #define CONFIRMED (1 << 3) |
| 91 | |
| 92 | struct nwz_model_t |
| 93 | { |
| 94 | const char *model; |
| 95 | unsigned flags; |
| 96 | struct nwz_kas_t kas; |
| 97 | char key[8]; |
| 98 | char sig[8]; |
| 99 | }; |
| 100 | |
| 101 | struct upg_md5_t |
| 102 | { |
| 103 | uint8_t md5[16]; |
| 104 | }__attribute__((packed)); |
| 105 | |
| 106 | struct upg_header_t |
| 107 | { |
| 108 | char sig[8]; |
| 109 | uint32_t nr_files; |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 110 | uint32_t pad; // make sure structure size is a multiple of 8 |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 111 | } __attribute__((packed)); |
| 112 | |
| 113 | struct upg_entry_t |
| 114 | { |
| 115 | uint32_t offset; |
| 116 | uint32_t size; |
| 117 | } __attribute__((packed)); |
| 118 | |
| 119 | struct nwz_model_t g_model_list[] = |
| 120 | { |
| 121 | { "nwz-e463", HAS_KAS | HAS_KEY | HAS_SIG | CONFIRMED, {"89d813f8f966efdebd9c9e0ea98156d2"}, "eb4431eb", "4f1d9cac" }, |
| 122 | { "nwz-a86x", HAS_KEY | HAS_SIG, {""}, "c824e4e2", "7c262bb0" }, |
| 123 | { "nw-a82x", HAS_KEY | HAS_SIG, {""}, "4df06482", "07fa0b6e" }, |
| 124 | }; |
| 125 | |
| 126 | static int digit_value(char c) |
| 127 | { |
| 128 | if(c >= '0' && c <= '9') return c - '0'; |
| 129 | if(c >= 'a' && c <= 'f') return c - 'a' + 10; |
| 130 | if(c >= 'A' && c <= 'F') return c - 'A' + 10; |
| 131 | return -1; |
| 132 | } |
| 133 | |
| 134 | static char hex_digit(unsigned v) |
| 135 | { |
| 136 | return (v < 10) ? v + '0' : (v < 16) ? v - 10 + 'a' : 'x'; |
| 137 | } |
| 138 | |
| 139 | static int decrypt_keysig(char keysig[NWZ_KEYSIG_SIZE]) |
| 140 | { |
| 141 | uint8_t src[16]; |
| 142 | for(int i = 32; i < NWZ_KEYSIG_SIZE; i++) |
| 143 | keysig[i] = 0; |
| 144 | for(int index = 0; index < 16; index++) |
| 145 | { |
| 146 | int a = digit_value(keysig[index * 2]); |
| 147 | int b = digit_value(keysig[index * 2 + 1]); |
| 148 | if(a < 0 || b < 0) |
| 149 | { |
| 150 | cprintf(GREY, "Invalid KAS !\n"); |
| 151 | return -1; |
| 152 | } |
| 153 | src[index] = a << 4 | b; |
| 154 | } |
| 155 | fwp_setkey("ed295076"); |
| 156 | fwp_crypt(src, sizeof(src), 1); |
| 157 | memcpy(keysig + 33, src, 8); |
| 158 | memcpy(keysig + 42, src + 8, 8); |
| 159 | return 0; |
| 160 | } |
| 161 | |
| 162 | static bool upg_notify_keysig(void *user, uint8_t key[8], uint8_t sig[8]) |
| 163 | { |
| 164 | memcpy(user + 33, key, 8); |
| 165 | memcpy(user + 42, sig, 8); |
| 166 | return true; |
| 167 | } |
| 168 | |
| 169 | static int do_upg(void *buf, long size) |
| 170 | { |
| 171 | struct upg_md5_t *md5 = buf; |
| 172 | cprintf(BLUE, "Preliminary\n"); |
| 173 | cprintf(GREEN, " MD5: "); |
| 174 | for(int i = 0; i < 16; i++) |
| 175 | cprintf(YELLOW, "%02x", md5->md5[i]); |
| 176 | printf(" "); |
| 177 | |
| 178 | uint8_t actual_md5[MD5_DIGEST_LENGTH]; |
| 179 | { |
| 180 | MD5_CTX c; |
| 181 | MD5_Init(&c); |
| 182 | MD5_Update(&c, md5 + 1, size - sizeof(struct upg_header_t)); |
| 183 | MD5_Final(actual_md5, &c); |
| 184 | } |
| 185 | check_field(memcmp(actual_md5, md5->md5, 16), 0, "Ok\n", "Mismatch\n"); |
| 186 | |
| 187 | if(g_model_index == -1 && g_keysig_search == KEYSIG_SEARCH_NONE && g_key == NULL && g_kas == NULL) |
| 188 | { |
| 189 | cprintf(GREY, "A KAS or a keysig is needed to decrypt the firmware\n"); |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 190 | cprintf(GREY, "You have the following options(see help for more details):\n"); |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 191 | cprintf(GREY, "- select a model with a known KAS\n"); |
| 192 | cprintf(GREY, "- specify an explicit KAS or key(+optional sig)\n"); |
| 193 | cprintf(GREY, "- let me try to find the keysig(slow !)\n"); |
| 194 | return 1; |
| 195 | } |
| 196 | |
| 197 | struct nwz_kas_t kas; |
| 198 | char keysig[NWZ_KEYSIG_SIZE]; |
| 199 | |
| 200 | memset(kas.kas, '?', NWZ_KAS_SIZE); |
| 201 | memset(keysig, '?', NWZ_KEYSIG_SIZE); |
| 202 | keysig[32] = keysig[41] = keysig[50] = 0; |
| 203 | |
| 204 | if(g_kas) |
| 205 | { |
| 206 | if(strlen(g_kas) != NWZ_KAS_SIZE) |
| 207 | { |
| 208 | cprintf(GREY, "The specified KAS has wrong length (must be %d hex digits)\n", NWZ_KAS_SIZE); |
| 209 | return 4; |
| 210 | } |
| 211 | memcpy(keysig, g_kas, NWZ_KAS_SIZE); |
| 212 | decrypt_keysig(keysig); |
| 213 | g_kas = keysig; |
| 214 | g_key = keysig + 33; |
| 215 | g_sig = keysig + 42; |
| 216 | } |
| 217 | else if(g_key) |
| 218 | { |
| 219 | if(strlen(g_key) != 8) |
| 220 | { |
| 221 | cprintf(GREY, "The specified key has wrong length (must be 8 hex digits)\n"); |
| 222 | return 4; |
| 223 | } |
| 224 | if(g_sig && strlen(g_sig) != 8) |
| 225 | { |
| 226 | cprintf(GREY, "The specified sig has wrong length (must be 8 hex digits)\n"); |
| 227 | return 5; |
| 228 | } |
| 229 | |
| 230 | memcpy(keysig + 33, g_key, 8); |
| 231 | if(!g_sig) |
| 232 | cprintf(GREY, "Warning: you have specified a key but no sig, I won't be able to do any checks\n"); |
| 233 | else |
| 234 | memcpy(keysig + 42, g_sig, 8); |
| 235 | g_key = keysig + 33; |
| 236 | if(g_sig) |
| 237 | g_sig = keysig + 42; |
| 238 | } |
| 239 | else if(g_model_index == -1) |
| 240 | { |
| 241 | cprintf(BLUE, "keysig Search\n"); |
| 242 | cprintf_field(" Method: ", "%s\n", keysig_search_desc[g_keysig_search].name); |
| 243 | bool ok = keysig_search_desc[g_keysig_search].fn((void *)(md5 + 1), &upg_notify_keysig, keysig); |
| 244 | cprintf(GREEN, " Result: "); |
| 245 | cprintf(ok ? YELLOW : RED, "%s\n", ok ? "Key found" : "No key found"); |
| 246 | if(!ok) |
| 247 | return 2; |
| 248 | g_key = keysig + 33; |
| 249 | g_sig = keysig + 42; |
| 250 | } |
| 251 | else |
| 252 | { |
| 253 | if(g_model_list[g_model_index].flags & HAS_KAS) |
| 254 | g_kas = g_model_list[g_model_index].kas.kas; |
| 255 | if(g_model_list[g_model_index].flags & HAS_KEY) |
| 256 | g_key = g_model_list[g_model_index].key; |
| 257 | if(g_model_list[g_model_index].flags & HAS_SIG) |
| 258 | g_sig = g_model_list[g_model_index].sig; |
| 259 | |
| 260 | if(g_kas) |
| 261 | { |
| 262 | memcpy(keysig, g_kas, NWZ_KAS_SIZE); |
| 263 | decrypt_keysig(keysig); |
| 264 | g_kas = keysig; |
| 265 | g_key = keysig + 33; |
| 266 | g_sig = keysig + 42; |
| 267 | } |
| 268 | else |
| 269 | { |
| 270 | if(g_key) |
| 271 | { |
| 272 | memcpy(keysig + 33, g_key, 8); |
| 273 | g_key = keysig + 33; |
| 274 | } |
| 275 | if(g_sig) |
| 276 | { |
| 277 | memcpy(keysig + 42, g_sig, 8); |
| 278 | g_sig = keysig + 42; |
| 279 | } |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | if(!g_kas) |
| 284 | { |
| 285 | g_kas = keysig; |
| 286 | fwp_setkey("ed295076"); |
| 287 | if(g_key) |
| 288 | { |
| 289 | memcpy(kas.kas, g_key, 8); |
| 290 | fwp_crypt(kas.kas, 8, 0); |
| 291 | for(int i = 0; i < 8; i++) |
| 292 | { |
| 293 | g_kas[2 * i] = hex_digit((kas.kas[i] >> 4) & 0xf); |
| 294 | g_kas[2 * i + 1] = hex_digit(kas.kas[i] & 0xf); |
| 295 | } |
| 296 | } |
| 297 | if(g_sig) |
| 298 | { |
| 299 | memcpy(kas.kas + 8, g_sig, 8); |
| 300 | fwp_crypt(kas.kas + 8, 8, 0); |
| 301 | for(int i = 8; i < 16; i++) |
| 302 | { |
| 303 | g_kas[2 * i] = hex_digit((kas.kas[i] >> 4) & 0xf); |
| 304 | g_kas[2 * i + 1] = hex_digit(kas.kas[i] & 0xf); |
| 305 | } |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | cprintf(BLUE, "Keys\n"); |
| 310 | cprintf_field(" KAS: ", "%."STR(NWZ_KAS_SIZE)"s\n", g_kas); |
| 311 | cprintf_field(" Key: ", "%s\n", g_key); |
| 312 | if(g_sig) |
| 313 | cprintf_field(" Sig: ", "%s\n", g_sig); |
| 314 | |
| 315 | struct upg_header_t *hdr = (void *)(md5 + 1); |
| 316 | int ret = fwp_read(hdr, sizeof(struct upg_header_t), hdr, (void *)g_key); |
| 317 | if(ret) |
| 318 | return ret; |
| 319 | |
| 320 | cprintf(BLUE, "Header\n"); |
| 321 | cprintf_field(" Signature:", " "); |
| 322 | for(int i = 0; i < 8; i++) |
| 323 | cprintf(YELLOW, "%c", isprint(hdr->sig[i]) ? hdr->sig[i] : '.'); |
| 324 | if(g_sig) |
| 325 | { |
| 326 | check_field(memcmp(hdr->sig, g_sig, 8), 0, " OK\n", " Mismatch\n"); |
| 327 | } |
| 328 | else |
| 329 | cprintf(RED, " Can't check\n"); |
| 330 | cprintf_field(" Files: ", "%d\n", hdr->nr_files); |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 331 | cprintf_field(" Pad: ", "0x%x\n", hdr->pad); |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 332 | |
| 333 | cprintf(BLUE, "Files\n"); |
| 334 | struct upg_entry_t *entry = (void *)(hdr + 1); |
| 335 | for(unsigned i = 0; i < hdr->nr_files; i++, entry++) |
| 336 | { |
| 337 | int ret = fwp_read(entry, sizeof(struct upg_entry_t), entry, (void *)g_key); |
| 338 | if(ret) |
| 339 | return ret; |
| 340 | cprintf(GREY, " File"); |
| 341 | cprintf(RED, " %d\n", i); |
| 342 | cprintf_field(" Offset: ", "0x%x\n", entry->offset); |
| 343 | cprintf_field(" Size: ", "0x%x\n", entry->size); |
| 344 | |
| 345 | if(g_out_prefix) |
| 346 | { |
| 347 | char *str = malloc(strlen(g_out_prefix) + 32); |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 348 | sprintf(str, "%s%d.bin", g_out_prefix, i); |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 349 | FILE *f = fopen(str, "wb"); |
| 350 | if(f) |
| 351 | { |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 352 | // round up size, there is some padding done with random data |
| 353 | int crypt_size = ROUND_UP(entry->size, 8); |
| 354 | int ret = fwp_read(buf + entry->offset, crypt_size, |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 355 | buf + entry->offset, (void *)g_key); |
| 356 | if(ret) |
| 357 | return ret; |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 358 | // but write the *good* amount of data |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 359 | fwrite(buf + entry->offset, 1, entry->size, f); |
| 360 | |
| 361 | fclose(f); |
| 362 | } |
| 363 | else |
| 364 | cprintf(GREY, "Cannot open '%s' for writing\n", str); |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | return 0; |
| 369 | } |
| 370 | |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 371 | static int extract_upg(int argc, char **argv) |
| 372 | { |
| 373 | if(argc == 0 || argc > 1) |
| 374 | { |
| 375 | if(argc == 0) |
| 376 | printf("You must specify a firmware file\n"); |
| 377 | else |
| 378 | printf("Extra arguments after firmware file\n"); |
| 379 | usage(); |
| 380 | } |
| 381 | |
| 382 | g_in_file = argv[0]; |
| 383 | FILE *fin = fopen(g_in_file, "r"); |
| 384 | if(fin == NULL) |
| 385 | { |
| 386 | perror("Cannot open boot file"); |
| 387 | return 1; |
| 388 | } |
| 389 | fseek(fin, 0, SEEK_END); |
| 390 | long size = ftell(fin); |
| 391 | fseek(fin, 0, SEEK_SET); |
| 392 | |
| 393 | void *buf = malloc(size); |
| 394 | if(buf == NULL) |
| 395 | { |
| 396 | perror("Cannot allocate memory"); |
| 397 | return 1; |
| 398 | } |
| 399 | |
| 400 | if(fread(buf, size, 1, fin) != 1) |
| 401 | { |
| 402 | perror("Cannot read file"); |
| 403 | return 1; |
| 404 | } |
| 405 | |
| 406 | fclose(fin); |
| 407 | |
| 408 | int ret = do_upg(buf, size); |
| 409 | if(ret != 0) |
| 410 | { |
| 411 | cprintf(GREY, "Error: %d", ret); |
| 412 | if(!g_force) |
| 413 | cprintf(GREY, " (use --force to force processing)"); |
| 414 | printf("\n"); |
| 415 | ret = 2; |
| 416 | } |
| 417 | free(buf); |
| 418 | |
| 419 | return ret; |
| 420 | } |
| 421 | |
| 422 | static long filesize(FILE *f) |
| 423 | { |
| 424 | long pos = ftell(f); |
| 425 | fseek(f, 0, SEEK_END); |
| 426 | long size = ftell(f); |
| 427 | fseek(f, pos, SEEK_SET); |
| 428 | return size; |
| 429 | } |
| 430 | |
| 431 | static int create_upg(int argc, char **argv) |
| 432 | { |
| 433 | if(argc == 0) |
| 434 | { |
| 435 | printf("You must specify a firmware filename\n"); |
| 436 | usage(); |
| 437 | } |
| 438 | |
| 439 | if(g_model_index == -1 && (g_key == NULL || g_sig == NULL) && g_kas == NULL) |
| 440 | { |
| 441 | cprintf(GREY, "A KAS or a keysig is needed to encrypt the firmware\n"); |
| 442 | cprintf(GREY, "You have the following options(see help for more details):\n"); |
| 443 | cprintf(GREY, "- select a model with a known KAS\n"); |
| 444 | cprintf(GREY, "- specify an explicit KAS or key+sig\n"); |
| 445 | return 1; |
| 446 | } |
| 447 | |
| 448 | struct nwz_kas_t kas; |
| 449 | char keysig[NWZ_KEYSIG_SIZE]; |
| 450 | |
| 451 | memset(kas.kas, '?', NWZ_KAS_SIZE); |
| 452 | memset(keysig, '?', NWZ_KEYSIG_SIZE); |
| 453 | keysig[32] = keysig[41] = keysig[50] = 0; |
| 454 | |
| 455 | if(g_kas) |
| 456 | { |
| 457 | if(strlen(g_kas) != NWZ_KAS_SIZE) |
| 458 | { |
| 459 | cprintf(GREY, "The specified KAS has wrong length (must be %d hex digits)\n", NWZ_KAS_SIZE); |
| 460 | return 4; |
| 461 | } |
| 462 | memcpy(keysig, g_kas, NWZ_KAS_SIZE); |
| 463 | decrypt_keysig(keysig); |
| 464 | g_kas = keysig; |
| 465 | g_key = keysig + 33; |
| 466 | g_sig = keysig + 42; |
| 467 | } |
| 468 | else if(g_key) |
| 469 | { |
| 470 | if(strlen(g_key) != 8) |
| 471 | { |
| 472 | cprintf(GREY, "The specified key has wrong length (must be 8 hex digits)\n"); |
| 473 | return 4; |
| 474 | } |
| 475 | if(strlen(g_sig) != 8) |
| 476 | { |
| 477 | cprintf(GREY, "The specified sig has wrong length (must be 8 hex digits)\n"); |
| 478 | return 5; |
| 479 | } |
| 480 | |
| 481 | memcpy(keysig + 33, g_key, 8); |
| 482 | if(!g_sig) |
| 483 | cprintf(GREY, "Warning: you have specified a key but no sig, I won't be able to do any checks\n"); |
| 484 | else |
| 485 | memcpy(keysig + 42, g_sig, 8); |
| 486 | g_key = keysig + 33; |
| 487 | g_sig = keysig + 42; |
| 488 | } |
| 489 | else if(g_model_index != -1) |
| 490 | { |
| 491 | if(g_model_list[g_model_index].flags & HAS_KAS) |
| 492 | g_kas = g_model_list[g_model_index].kas.kas; |
| 493 | if(g_model_list[g_model_index].flags & HAS_KEY) |
| 494 | g_key = g_model_list[g_model_index].key; |
| 495 | if(g_model_list[g_model_index].flags & HAS_SIG) |
| 496 | g_sig = g_model_list[g_model_index].sig; |
| 497 | |
| 498 | if(g_key && g_sig) |
| 499 | { |
| 500 | memcpy(keysig + 33, g_key, 8); |
| 501 | g_key = keysig + 33; |
| 502 | memcpy(keysig + 42, g_sig, 8); |
| 503 | g_sig = keysig + 42; |
| 504 | } |
| 505 | else if(g_kas) |
| 506 | { |
| 507 | memcpy(keysig, g_kas, NWZ_KAS_SIZE); |
| 508 | decrypt_keysig(keysig); |
| 509 | g_kas = keysig; |
| 510 | g_key = keysig + 33; |
| 511 | g_sig = keysig + 42; |
| 512 | } |
| 513 | else |
| 514 | { |
| 515 | printf("Target doesn't have enough information to get key and sig\n"); |
| 516 | return 1; |
| 517 | } |
| 518 | } |
| 519 | else |
| 520 | { |
| 521 | printf("Kill me\n"); |
| 522 | return 1; |
| 523 | } |
| 524 | |
| 525 | if(!g_kas) |
| 526 | { |
| 527 | g_kas = keysig; |
| 528 | fwp_setkey("ed295076"); |
| 529 | memcpy(kas.kas, g_key, 8); |
| 530 | fwp_crypt(kas.kas, 8, 0); |
| 531 | for(int i = 0; i < 8; i++) |
| 532 | { |
| 533 | g_kas[2 * i] = hex_digit((kas.kas[i] >> 4) & 0xf); |
| 534 | g_kas[2 * i + 1] = hex_digit(kas.kas[i] & 0xf); |
| 535 | } |
| 536 | memcpy(kas.kas + 8, g_sig, 8); |
| 537 | fwp_crypt(kas.kas + 8, 8, 0); |
| 538 | for(int i = 8; i < 16; i++) |
| 539 | { |
| 540 | g_kas[2 * i] = hex_digit((kas.kas[i] >> 4) & 0xf); |
| 541 | g_kas[2 * i + 1] = hex_digit(kas.kas[i] & 0xf); |
| 542 | } |
| 543 | } |
| 544 | |
| 545 | cprintf(BLUE, "Keys\n"); |
| 546 | cprintf_field(" KAS: ", "%."STR(NWZ_KAS_SIZE)"s\n", g_kas); |
| 547 | cprintf_field(" Key: ", "%s\n", g_key); |
| 548 | if(g_sig) |
| 549 | cprintf_field(" Sig: ", "%s\n", g_sig); |
| 550 | |
| 551 | FILE *fout = fopen(argv[0], "wb"); |
| 552 | if(fout == NULL) |
| 553 | { |
| 554 | printf("Cannot open output firmware file: %m\n"); |
| 555 | return 1; |
| 556 | } |
| 557 | |
| 558 | int nr_files = argc - 1; |
| 559 | FILE **files = malloc(nr_files * sizeof(FILE *)); |
| 560 | |
| 561 | for(int i = 0; i < nr_files; i++) |
| 562 | { |
| 563 | files[i] = fopen(argv[1 + i], "rb"); |
| 564 | if(files[i] == NULL) |
| 565 | { |
| 566 | printf("Cannot open input file '%s': %m\n", argv[i + 1]); |
| 567 | return 1; |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | struct upg_md5_t md5; |
| 572 | memset(&md5, 0, sizeof(md5)); |
| 573 | MD5_CTX c; |
| 574 | MD5_Init(&c); |
| 575 | // output a dummy md5 sum |
| 576 | fwrite(&md5, 1, sizeof(md5), fout); |
| 577 | // output the encrypted signature |
| 578 | struct upg_header_t hdr; |
| 579 | memcpy(hdr.sig, g_sig, 8); |
| 580 | hdr.nr_files = nr_files; |
| 581 | hdr.pad = 0; |
| 582 | |
| 583 | int ret = fwp_write(&hdr, sizeof(hdr), &hdr, (void *)g_key); |
| 584 | if(ret) |
| 585 | return ret; |
| 586 | MD5_Update(&c, &hdr, sizeof(hdr)); |
| 587 | fwrite(&hdr, 1, sizeof(hdr), fout); |
| 588 | |
| 589 | // output file headers |
| 590 | long offset = sizeof(md5) + sizeof(hdr) + nr_files * sizeof(struct upg_entry_t); |
| 591 | for(int i = 0; i < nr_files; i++) |
| 592 | { |
| 593 | struct upg_entry_t entry; |
| 594 | entry.offset = offset; |
| 595 | entry.size = filesize(files[i]); |
| 596 | offset += ROUND_UP(entry.size, 8); // do it before encryption !! |
| 597 | |
| 598 | ret = fwp_write(&entry, sizeof(entry), &entry, (void *)g_key); |
| 599 | if(ret) |
| 600 | return ret; |
| 601 | MD5_Update(&c, &entry, sizeof(entry)); |
| 602 | fwrite(&entry, 1, sizeof(entry), fout); |
| 603 | } |
| 604 | |
| 605 | cprintf(BLUE, "Files\n"); |
| 606 | for(int i = 0; i < nr_files; i++) |
| 607 | { |
| 608 | long size = filesize(files[i]); |
| 609 | long r_size = ROUND_UP(size, 8); |
| 610 | cprintf(GREY, " File"); |
| 611 | cprintf(RED, " %d\n", i); |
| 612 | cprintf_field(" Offset: ", "0x%lx\n", ftell(fout)); |
| 613 | cprintf_field(" Size: ", "0x%lx\n", size); |
| 614 | |
| 615 | void *buf = malloc(r_size); |
| 616 | memset(buf, 0, r_size); |
| 617 | fread(buf, 1, size, files[i]); |
| 618 | fclose(files[i]); |
| 619 | |
| 620 | ret = fwp_write(buf, r_size, buf, (void *)g_key); |
| 621 | if(ret) |
| 622 | return ret; |
| 623 | MD5_Update(&c, buf, r_size); |
| 624 | fwrite(buf, 1, r_size, fout); |
| 625 | |
| 626 | free(buf); |
| 627 | } |
| 628 | |
| 629 | fseek(fout, 0, SEEK_SET); |
| 630 | MD5_Final(md5.md5, &c); |
| 631 | fwrite(&md5, 1, sizeof(md5), fout); |
| 632 | fclose(fout); |
| 633 | |
| 634 | return 0; |
| 635 | } |
| 636 | |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 637 | static void usage(void) |
| 638 | { |
| 639 | color(OFF); |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 640 | printf("Usage: upgtool [options] firmware [files...]\n"); |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 641 | printf("Options:\n"); |
| 642 | printf(" -o <prefix>\t\tSet output prefix\n"); |
| 643 | printf(" -f/--force\t\tForce to continue on errors\n"); |
| 644 | printf(" -?/--help\t\tDisplay this message\n"); |
| 645 | printf(" -d/--debug\t\tDisplay debug messages\n"); |
| 646 | printf(" -c/--no-color\t\tDisable color output\n"); |
| 647 | printf(" -m/--model <model>\tSelect model (or ? to list them)\n"); |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 648 | printf(" -l/--search <method>\tTry to find the keysig (implies -e)\n"); |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 649 | printf(" -a/--kas <kas>\tForce KAS\n"); |
| 650 | printf(" -k/--key <key>\tForce key\n"); |
| 651 | printf(" -s/--sig <sig>\tForce sig\n"); |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 652 | printf(" -e/--extract\t\tExtract a UPG archive\n"); |
| 653 | printf(" -c/--create\t\tCreate a UPG archive\n"); |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 654 | printf("keysig search method:\n"); |
| 655 | for(int i = KEYSIG_SEARCH_FIRST; i < KEYSIG_SEARCH_LAST; i++) |
| 656 | printf(" %s\t%s\n", keysig_search_desc[i].name, keysig_search_desc[i].comment); |
| 657 | exit(1); |
| 658 | } |
| 659 | |
| 660 | int main(int argc, char **argv) |
| 661 | { |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 662 | bool extract = false; |
| 663 | bool create = false; |
| 664 | |
| 665 | if(argc <= 1) |
| 666 | usage(); |
| 667 | |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 668 | while(1) |
| 669 | { |
| 670 | static struct option long_options[] = |
| 671 | { |
| 672 | {"help", no_argument, 0, '?'}, |
| 673 | {"debug", no_argument, 0, 'd'}, |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 674 | {"no-color", no_argument, 0, 'n'}, |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 675 | {"force", no_argument, 0, 'f'}, |
| 676 | {"model", required_argument, 0, 'm'}, |
| 677 | {"search", required_argument, 0, 'l'}, |
| 678 | {"kas", required_argument, 0, 'a'}, |
| 679 | {"key", required_argument, 0, 'k'}, |
| 680 | {"sig", required_argument, 0, 's'}, |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 681 | {"extract", no_argument, 0, 'e'}, |
| 682 | {"create", no_argument, 0 ,'c'}, |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 683 | {0, 0, 0, 0} |
| 684 | }; |
| 685 | |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 686 | int c = getopt_long(argc, argv, "?dnfo:m:l:a:k:s:ec", long_options, NULL); |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 687 | if(c == -1) |
| 688 | break; |
| 689 | switch(c) |
| 690 | { |
| 691 | case -1: |
| 692 | break; |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 693 | case 'n': |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 694 | enable_color(false); |
| 695 | break; |
| 696 | case 'd': |
| 697 | g_debug = true; |
| 698 | break; |
| 699 | case 'f': |
| 700 | g_force = true; |
| 701 | break; |
| 702 | case '?': |
| 703 | usage(); |
| 704 | break; |
| 705 | case 'o': |
| 706 | g_out_prefix = optarg; |
| 707 | break; |
| 708 | case 'm': |
| 709 | g_model = optarg; |
| 710 | break; |
| 711 | case 'l': |
| 712 | g_keysig_search = KEYSIG_SEARCH_NONE; |
| 713 | for(int i = KEYSIG_SEARCH_FIRST; i < KEYSIG_SEARCH_LAST; i++) |
| 714 | if(strcmp(keysig_search_desc[i].name, optarg) == 0) |
| 715 | g_keysig_search = i; |
| 716 | if(g_keysig_search == KEYSIG_SEARCH_NONE) |
| 717 | { |
| 718 | cprintf(GREY, "Unknown keysig search method '%s'\n", optarg); |
| 719 | return 1; |
| 720 | } |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 721 | extract = true; |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 722 | break; |
| 723 | case 'a': |
| 724 | g_kas = optarg; |
| 725 | break; |
| 726 | case 'k': |
| 727 | g_key = optarg; |
| 728 | break; |
| 729 | case 's': |
| 730 | g_sig = optarg; |
| 731 | break; |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 732 | case 'e': |
| 733 | extract = true; |
| 734 | break; |
| 735 | case 'c': |
| 736 | create = true; |
| 737 | break; |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 738 | default: |
| 739 | abort(); |
| 740 | } |
| 741 | } |
| 742 | |
| 743 | if(g_model && strcmp(g_model, "?") == 0) |
| 744 | { |
| 745 | cprintf(BLUE, "Model list:\n"); |
| 746 | for(unsigned i = 0; i < sizeof(g_model_list) / sizeof(g_model_list[0]); i++) |
| 747 | { |
| 748 | cprintf(GREEN, " %s:", g_model_list[i].model); |
| 749 | if(g_model_list[i].flags & HAS_KAS) |
| 750 | { |
| 751 | cprintf(RED, " kas="); |
| 752 | cprintf(YELLOW, "%."STR(NWZ_KAS_SIZE)"s", g_model_list[i].kas.kas); |
| 753 | } |
| 754 | if(g_model_list[i].flags & HAS_KEY) |
| 755 | { |
| 756 | cprintf(RED, " key="); |
| 757 | cprintf(YELLOW, "%.8s", g_model_list[i].key); |
| 758 | } |
| 759 | if(g_model_list[i].flags & HAS_SIG) |
| 760 | { |
| 761 | cprintf(RED, " sig="); |
| 762 | cprintf(YELLOW, "%.8s", g_model_list[i].sig); |
| 763 | } |
| 764 | if(g_model_list[i].flags & CONFIRMED) |
| 765 | cprintf(RED, " confirmed"); |
| 766 | else |
| 767 | cprintf(RED, " guessed"); |
| 768 | printf("\n"); |
| 769 | } |
| 770 | return 1; |
| 771 | } |
| 772 | |
| 773 | if(g_model) |
| 774 | { |
| 775 | for(unsigned i = 0; i < sizeof(g_model_list) / sizeof(g_model_list[0]); i++) |
| 776 | if(strcmp(g_model, g_model_list[i].model) == 0) |
| 777 | g_model_index = i; |
| 778 | if(g_model_index == -1) |
| 779 | cprintf(GREY, "Warning: unknown model %s\n", g_model); |
| 780 | } |
| 781 | |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 782 | if(!create && !extract) |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 783 | { |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 784 | printf("You must specify an action (extract or create)\n"); |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 785 | return 1; |
| 786 | } |
| 787 | |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 788 | if(create && extract) |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 789 | { |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 790 | printf("You cannot specify both create and extract\n"); |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 791 | return 1; |
| 792 | } |
| 793 | |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 794 | int ret = 0; |
| 795 | if(create) |
| 796 | ret = create_upg(argc - optind, argv + optind); |
| 797 | else if(extract) |
| 798 | ret = extract_upg(argc - optind, argv + optind); |
| 799 | else |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 800 | { |
Amaury Pouly | 214f226 | 2012-11-12 18:35:00 +0100 | [diff] [blame] | 801 | printf("Die from lack of action\n"); |
| 802 | ret = 1; |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 803 | } |
Amaury Pouly | cb09e36 | 2012-11-03 02:16:01 +0100 | [diff] [blame] | 804 | |
| 805 | color(OFF); |
| 806 | |
| 807 | return ret; |
| 808 | } |
| 809 | |