├── LICENSE ├── README.md ├── finders.c ├── functions.c ├── iBoot32Patcher.c ├── include ├── arm32_defs.h ├── finders.h ├── functions.h ├── iBoot32Patcher.h └── patchers.h └── patchers.c /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | iBoot32Patcher - A Universal 32-bit iBoot patcher for iPhone OS 2.0 --> iOS 10 2 | ---------------------------------------------------- 3 | Copyright 2013-2016, iH8sn0w. 4 | 5 | iBoot32Patcher is free software: you can redistribute it and/or modify 6 | it under the terms of the GNU General Public License as published by 7 | the Free Software Foundation, either version 3 of the License, or 8 | (at your option) any later version. 9 | 10 | iBoot32Patcher is distributed in the hope that it will be useful, 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 | GNU General Public License for more details. 14 | 15 | You should have received a copy of the GNU General Public License 16 | along with iBoot32Patcher. If not, see . 17 | 18 | Compiling 19 | --------------------------------------------------- 20 | clang iBoot32Patcher.c finders.c functions.c patchers.c -Wno-multichar -I. -o iBoot32Patcher 21 | 22 | Sample Usage 23 | --------------------------------------------------- 24 | iBoot32Patcher iBoot.n49.RELEASE.dfu.decrypted iBoot.n49.RELEASE.dfu.patched -b "cs_enforcement_disable=1" -c "ticket" 0x80000000 25 | 26 | Bugs 27 | --------------------------------------------------- 28 | Be sure to file a bug report under Github's Issues tab if you run into any. 29 | -------------------------------------------------------------------------------- /finders.c: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2013-2016, iH8sn0w. 3 | * 4 | * This file is part of iBoot32Patcher. 5 | * 6 | * iBoot32Patcher is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * iBoot32Patcher is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with iBoot32Patcher. If not, see . 18 | */ 19 | 20 | #include 21 | #include 22 | #include 23 | #include 24 | #include 25 | 26 | void* find_bl_verify_shsh(struct iboot_img* iboot_in) { 27 | int os_vers = get_os_version(iboot_in); 28 | 29 | /* Use the os-specific method for finding BL verify_shsh... */ 30 | if(os_vers >= 5 && os_vers <= 7) { 31 | return find_bl_verify_shsh_5_6_7(iboot_in); 32 | } 33 | 34 | return find_bl_verify_shsh_generic(iboot_in); 35 | } 36 | 37 | 38 | void* find_ldr_ecid(struct iboot_img* iboot_in) { 39 | printf("%s: Entering...\n", __FUNCTION__); 40 | 41 | /* Find the LDR Rx, ='ECID' instruction... */ 42 | void* ldr_insn = find_next_LDR_insn_with_value(iboot_in, 'ECID'); 43 | if(!ldr_insn) { 44 | printf("%s: Unable to find LDR ECID!\n", __FUNCTION__); 45 | return 0; 46 | } 47 | 48 | printf("%s: Found LDR instruction at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_insn)); 49 | 50 | /* Resolve the BL verify_shsh routine from found instruction... */ 51 | char *ldr_ecid = bl_search_down(ldr_insn,0x100); 52 | if(!ldr_ecid) { 53 | printf("%s: Unable to find a BL ECID! (Image may already be patched?)\n", __FUNCTION__); 54 | return 0; 55 | } 56 | 57 | printf("%s: Found BL ECID at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_ecid)); 58 | 59 | printf("%s: Leaving...\n", __FUNCTION__); 60 | 61 | return ldr_ecid; 62 | } 63 | 64 | void* find_ldr_bord(struct iboot_img* iboot_in) { 65 | printf("%s: Entering...\n", __FUNCTION__); 66 | 67 | /* Find the LDR Rx, ='BORD' instruction... */ 68 | void* ldr_insn = find_next_LDR_insn_with_value(iboot_in, 'BORD'); 69 | if(!ldr_insn) { 70 | printf("%s: Unable to find LDR insn!\n", __FUNCTION__); 71 | return 0; 72 | } 73 | 74 | printf("%s: Found LDR BORD instruction at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_insn)); 75 | 76 | /* Resolve the BL verify_shsh routine from found instruction... */ 77 | char *ldr_bord = bl_search_down(ldr_insn,0x100); 78 | if(!ldr_bord) { 79 | printf("%s: Unable to find a BL BORD! (Image may already be patched?)\n", __FUNCTION__); 80 | return 0; 81 | } 82 | 83 | printf("%s: Found BL BORD at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_bord)); 84 | 85 | printf("%s: Leaving...\n", __FUNCTION__); 86 | 87 | return ldr_bord; 88 | } 89 | 90 | void* find_ldr_prod(struct iboot_img* iboot_in) { 91 | printf("%s: Entering...\n", __FUNCTION__); 92 | 93 | /* Find the LDR Rx, ='PROD' instruction... */ 94 | void* ldr_insn = find_next_LDR_insn_with_value(iboot_in, 'PROD'); 95 | if(!ldr_insn) { 96 | printf("%s: Unable to find LDR insn!\n", __FUNCTION__); 97 | return 0; 98 | } 99 | 100 | printf("%s: Found LDR PROD instruction at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_insn)); 101 | 102 | /* Resolve the BL verify_shsh routine from found instruction... */ 103 | char *ldr_prod = bl_search_down(ldr_insn,0x100); 104 | if(!ldr_prod) { 105 | printf("%s: Unable to find a BL PROD! (Image may already be patched?)\n", __FUNCTION__); 106 | return 0; 107 | } 108 | 109 | printf("%s: Found BL PROD at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_prod)); 110 | 111 | printf("%s: Leaving...\n", __FUNCTION__); 112 | 113 | return ldr_prod; 114 | } 115 | 116 | void* find_ldr_sepo(struct iboot_img* iboot_in) { 117 | printf("%s: Entering...\n", __FUNCTION__); 118 | 119 | /* Find the LDR Rx, ='SEPO' instruction... */ 120 | void* ldr_insn = find_next_LDR_insn_with_value(iboot_in, 'SEPO'); 121 | if(!ldr_insn) { 122 | printf("%s: Unable to find LDR insn!\n", __FUNCTION__); 123 | return 0; 124 | } 125 | 126 | printf("%s: Found LDR SEPO instruction at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_insn)); 127 | 128 | /* Resolve the BL verify_shsh routine from found instruction... */ 129 | char *ldr_sepo = bl_search_down(ldr_insn,0x100); 130 | if(!ldr_sepo) { 131 | printf("%s: Unable to find a BL SEPO! (Image may already be patched?)\n", __FUNCTION__); 132 | return 0; 133 | } 134 | 135 | printf("%s: Found BL SEPO at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_sepo)); 136 | 137 | printf("%s: Leaving...\n", __FUNCTION__); 138 | 139 | return ldr_sepo; 140 | } 141 | 142 | void* find_rsa_check_4(struct iboot_img* iboot_in) { 143 | printf("%s: Entering...\n", __FUNCTION__); 144 | 145 | /* Find the RSA check */ 146 | void* rsa_check_4 = memstr(iboot_in->buf, iboot_in->len, RSA_PATCH_IOS_4); 147 | if(!rsa_check_4) { 148 | printf("%s: Unable to find RSA check!\n", __FUNCTION__); 149 | return 0; 150 | } 151 | 152 | printf("%s: Found RSA check at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, rsa_check_4)); 153 | 154 | printf("%s: Leaving...\n", __FUNCTION__); 155 | 156 | return rsa_check_4; 157 | } 158 | 159 | void* find_bl_verify_shsh_5_6_7(struct iboot_img* iboot_in) { 160 | printf("%s: Entering...\n", __FUNCTION__); 161 | 162 | /* Find the MOVW Rx, #'RT' instruction... */ 163 | void* movw = find_next_MOVW_insn_with_value(iboot_in->buf, iboot_in->len, 'RT'); 164 | if(!movw) { 165 | printf("%s: Unable to find MOVW instruction!\n", __FUNCTION__); 166 | return 0; 167 | } 168 | 169 | printf("%s: Found MOVW instruction at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, movw)); 170 | 171 | /* Resolve the BL verify_shsh routine from found instruction... */ 172 | void* bl_verify_shsh = find_bl_verify_shsh_insn(iboot_in, movw); 173 | if(!bl_verify_shsh) { 174 | printf("%s: Unable to find a BL verify_shsh! (Image may already be patched?)\n", __FUNCTION__); 175 | return 0; 176 | } 177 | 178 | printf("%s: Found BL verify_shsh at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, bl_verify_shsh)); 179 | 180 | printf("%s: Leaving...\n", __FUNCTION__); 181 | 182 | return bl_verify_shsh; 183 | } 184 | 185 | void* find_bl_verify_shsh_generic(struct iboot_img* iboot_in) { 186 | printf("%s: Entering...\n", __FUNCTION__); 187 | 188 | /* Find the LDR Rx, ='CERT' instruction... */ 189 | void* ldr_insn = find_next_LDR_insn_with_value(iboot_in, 'CERT'); 190 | if(!ldr_insn) { 191 | printf("%s: Unable to find LDR insn!\n", __FUNCTION__); 192 | return 0; 193 | } 194 | 195 | printf("%s: Found LDR instruction at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_insn)); 196 | 197 | /* Resolve the BL verify_shsh routine from found instruction... */ 198 | void* bl_verify_shsh = find_bl_verify_shsh_insn(iboot_in, ldr_insn); 199 | if(!bl_verify_shsh) { 200 | printf("%s: Unable to find a BL verify_shsh! (Image may already be patched?)\n", __FUNCTION__); 201 | return 0; 202 | } 203 | 204 | printf("%s: Found BL verify_shsh at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, bl_verify_shsh)); 205 | 206 | printf("%s: Leaving...\n", __FUNCTION__); 207 | 208 | return bl_verify_shsh; 209 | } 210 | 211 | void* find_bl_verify_shsh_insn(struct iboot_img* iboot_in, void* pc) { 212 | /* Find the top of the function... */ 213 | void* function_top = find_verify_shsh_top(pc); 214 | if(!function_top) { 215 | printf("%s: Unable to find top of verify_shsh!\n", __FUNCTION__); 216 | return 0; 217 | } 218 | 219 | /* Find the BL insn resolving to this function... (BL verify_shsh seems to only happen once) */ 220 | void* bl_verify_shsh = find_next_bl_insn_to(iboot_in, (uint32_t) ((uintptr_t)GET_IBOOT_FILE_OFFSET(iboot_in, function_top))); 221 | if(!bl_verify_shsh) { 222 | return 0; 223 | } 224 | 225 | return bl_verify_shsh; 226 | } 227 | 228 | void* find_dtre_get_value_bl_insn(struct iboot_img* iboot_in, const char* var) { 229 | printf("%s: Entering...\n", __FUNCTION__); 230 | 231 | /* Find the variable string... */ 232 | void* var_str_loc = memstr(iboot_in->buf, iboot_in->len, var); 233 | if(!var_str_loc) { 234 | printf("%s: Unable to find %s string!\n", __FUNCTION__, var); 235 | return 0; 236 | } 237 | printf("%s: %s string is at %p\n", __FUNCTION__, var, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, var_str_loc)); 238 | 239 | /* Find the variable string xref... */ 240 | void* var_xref = iboot_memmem(iboot_in, var_str_loc); 241 | if(!var_xref) { 242 | printf("%s: Unable to find %s string xref!\n", __FUNCTION__, var); 243 | return 0; 244 | } 245 | printf("%s: \"%s\" xref is at %p\n", __FUNCTION__, var, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, var_xref)); 246 | 247 | /* Locate corresponding LDR insn for xref... */ 248 | void* var_ldr = ldr_to(var_xref); 249 | if(!var_ldr) { 250 | printf("%s: Unable to find %s string LDR from xref!\n", __FUNCTION__, var); 251 | return 0; 252 | } 253 | 254 | struct arm32_thumb_LDR* ldr_rd_debug_enabled = (struct arm32_thumb_LDR*) var_ldr; 255 | printf("%s: Found LDR R%d, =\"%s\" at %p\n", __FUNCTION__, ldr_rd_debug_enabled->rd, var, GET_IBOOT_FILE_OFFSET(iboot_in, var_ldr)); 256 | 257 | /* Find the BL insn that follows the LDR insn... (Usually BL does_dtre_have_var) */ 258 | void* is_in_dtre_bl = bl_search_down(var_ldr, 0x100); 259 | if(!is_in_dtre_bl) { 260 | printf("%s: Unable to find a BL following LDR insn.\n", __FUNCTION__); 261 | return 0; 262 | } 263 | is_in_dtre_bl++; 264 | 265 | /* Find the next BL insn after the previous BL insn... (Usually BL get_value_for_dtre_var) */ 266 | void* get_value_for_dtre_bl = bl_search_down(is_in_dtre_bl, 0x100); 267 | if(!get_value_for_dtre_bl) { 268 | printf("%s: Unable to find a BL following the previous BL.\n", __FUNCTION__); 269 | return 0; 270 | } 271 | 272 | printf("%s: Found BL instruction at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, get_value_for_dtre_bl)); 273 | 274 | printf("%s: Leaving...\n", __FUNCTION__); 275 | 276 | return get_value_for_dtre_bl; 277 | } 278 | 279 | void* find_verify_shsh_top(void* ptr) { 280 | void* top = push_r4_r7_lr_search_up(ptr, 0x500); 281 | if(!top) { 282 | return 0; 283 | } 284 | top++; // Thumb 285 | return top; 286 | } 287 | 288 | void* find_boot_partition_ldr(struct iboot_img* iboot_in) { 289 | printf("%s: Entering...\n", __FUNCTION__); 290 | uint32_t boot_partition_loc = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "boot-partition", strlen("boot-partition"))); 291 | if (!boot_partition_loc) { 292 | printf("%s: Failed to find boot-partition string\n", __FUNCTION__); 293 | return 0; 294 | } 295 | printf("%s: Found boot-partition string: %p\n", __FUNCTION__, boot_partition_loc); 296 | void * boot_partition_ldr = find_next_LDR_insn_with_value(iboot_in, boot_partition_loc); 297 | if (!boot_partition_ldr) { 298 | printf("%s: Failed to find boot-partition LDR\n", __FUNCTION__); 299 | return 0; 300 | } 301 | printf("%s: Found boot-partition LDR: %p\n", __FUNCTION__, GET_IBOOT_ADDR(iboot_in, boot_partition_ldr)); 302 | return boot_partition_ldr; 303 | } 304 | 305 | void* find_boot_ramdisk_ldr(struct iboot_img* iboot_in) { 306 | printf("%s: Entering...\n", __FUNCTION__); 307 | uint32_t boot_ramdisk_loc = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "boot-ramdisk", strlen("boot-ramdisk"))); 308 | if (!boot_ramdisk_loc) { 309 | printf("%s: Failed to find boot-ramdisk string\n", __FUNCTION__); 310 | return 0; 311 | } 312 | printf("%s: Found boot-ramdisk string: %p\n", __FUNCTION__, boot_ramdisk_loc); 313 | void * boot_ramdisk_ldr = find_next_LDR_insn_with_value(iboot_in, boot_ramdisk_loc); 314 | if (!boot_ramdisk_ldr) { 315 | printf("%s: Failed to find boot-ramdisk LDR\n", __FUNCTION__); 316 | return 0; 317 | } 318 | printf("%s: Found boot-ramdisk LDR: %p\n", __FUNCTION__, GET_IBOOT_ADDR(iboot_in, boot_ramdisk_ldr)); 319 | return boot_ramdisk_ldr; 320 | } 321 | 322 | void* find_fsboot_str_xref(struct iboot_img* iboot_in) { 323 | printf("%s: Entering...\n", __FUNCTION__); 324 | void* fsboot_str_loc = memstr(iboot_in->buf, iboot_in->len, "\x66\x73\x62\x6F\x6F\x74\x00"); 325 | printf("%s: Found fsboot string at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, fsboot_str_loc)); 326 | void* fsboot_str_xref = iboot_memmem(iboot_in, fsboot_str_loc); 327 | printf("%s: Found fsboot xref at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, fsboot_str_xref)); 328 | return fsboot_str_xref; 329 | } 330 | 331 | void* find_upgrade_str_loc(struct iboot_img* iboot_in) { 332 | uint32_t upgrade_str_loc = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "\x75\x70\x67\x72\x61\x64\x65\x00", strlen("\x75\x70\x67\x72\x61\x64\x65\x00"))); 333 | if (!upgrade_str_loc) { 334 | printf("%s: Failed to find upgrade string\n", __FUNCTION__); 335 | return 0; 336 | } 337 | printf("%s: Found upgrade string at %p\n", __FUNCTION__, upgrade_str_loc); 338 | printf("%s: Leaving...\n", __FUNCTION__); 339 | return upgrade_str_loc; 340 | } 341 | 342 | void* find_false_str_xref(struct iboot_img* iboot_in) { 343 | printf("%s: Entering...\n", __FUNCTION__); 344 | void* false_str_loc = memstr(iboot_in->buf, iboot_in->len, "\x66\x61\x6c\x73\x65\x00"); 345 | printf("%s: Found false string at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, false_str_loc)); 346 | void* false_str_xref = iboot_memmem(iboot_in, false_str_loc); 347 | printf("%s: Found false xref at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, false_str_xref)); 348 | return false_str_xref; 349 | } 350 | 351 | void* find_true_str_loc(struct iboot_img* iboot_in) { 352 | uint32_t true_loc = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "\x74\x72\x75\x65\x00", strlen("\x74\x72\x75\x65\x00"))); 353 | if (!true_loc) { 354 | printf("%s: Failed to find true string\n", __FUNCTION__); 355 | return 0; 356 | } 357 | printf("%s: Found true string at %p\n", __FUNCTION__, true_loc); 358 | printf("%s: Leaving...\n", __FUNCTION__); 359 | return true_loc; 360 | } 361 | 362 | void* find_mount_upgrade_bl_8(struct iboot_img* iboot_in) { 363 | uint32_t upgrade_partition_str_loc = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "could not locate upgrade partition", strlen("could not locate upgrade partition"))); 364 | if (!upgrade_partition_str_loc) { 365 | printf("%s: Failed to find upgrade partition string\n", __FUNCTION__); 366 | return 0; 367 | } 368 | printf("%s: Found upgrade partition string: %p\n", __FUNCTION__, upgrade_partition_str_loc); 369 | void * upgrade_partition_str_ldr = find_next_LDR_insn_with_value(iboot_in, upgrade_partition_str_loc); 370 | if (!upgrade_partition_str_ldr) { 371 | printf("%s: Failed to find upgrade partition string LDR\n", __FUNCTION__); 372 | return 0; 373 | } 374 | printf("%s: Found upgrade partition string LDR at %p\n", __FUNCTION__, GET_IBOOT_ADDR(iboot_in, upgrade_partition_str_ldr)); 375 | void * mount_partition_bl = push_r7_lr_search_up(upgrade_partition_str_ldr,0x100); 376 | mount_partition_bl+=0x4; 377 | printf("%s: Creating LDR=nand0c at %p\n", __FUNCTION__,GET_IBOOT_FILE_OFFSET(iboot_in,mount_partition_bl)); 378 | *(uint32_t*)mount_partition_bl = bswap32(0x034800bf); 379 | for (int i=0;i<4;i++) { 380 | mount_partition_bl +=4; 381 | printf("%s: NOPing %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,mount_partition_bl)); 382 | *(uint32_t*)mount_partition_bl = bswap32(0x00bf00bf); 383 | } 384 | *(uint32_t*)mount_partition_bl = bswap32(0xb001f0bf); 385 | 386 | return mount_partition_bl; 387 | } 388 | 389 | void* find_mount_upgrade_bl_9(struct iboot_img* iboot_in) { 390 | uint32_t ramdisk_str_loc = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "/boot/ramdisk", strlen("/boot/ramdisk"))); 391 | if (!ramdisk_str_loc) { 392 | printf("%s: Failed to find /boot/ramdisk string\n", __FUNCTION__); 393 | return 0; 394 | } 395 | printf("%s: Found /boot/ramdisk at %p\n", __FUNCTION__, ramdisk_str_loc); 396 | void* ramdisk_str_ldr = find_next_LDR_insn_with_value(iboot_in, ramdisk_str_loc); 397 | if (!ramdisk_str_ldr) { 398 | printf("%s: Failed to find /boot/iBEC LDR\n", __FUNCTION__); 399 | return 0; 400 | } 401 | printf("%s: Found /boot/ramdisk LDR at %p\n", __FUNCTION__, GET_IBOOT_ADDR(iboot_in, ramdisk_str_ldr)); 402 | 403 | void* mount_partition = bl_search_up(ramdisk_str_ldr,0x100); 404 | void* first_bl = bl_search_up(mount_partition-0x1,0x100); 405 | void* second_bl = bl_search_up(first_bl-0x1,0x100); 406 | void* mount_partition_bl = bl_search_up(second_bl-0x1,0x100); 407 | uint32_t *dst = resolve_bl32(mount_partition_bl); 408 | printf("%s: Found mount_partition routine at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst)); 409 | void* LDR_instr = dst; 410 | LDR_instr+=0x3; 411 | printf("%s: Creating LDR=nand0c at %p\n", __FUNCTION__,GET_IBOOT_FILE_OFFSET(iboot_in,LDR_instr)); 412 | *(uint32_t*)LDR_instr = bswap32(0x034800bf); 413 | for (int i=0;i<4;i++) { 414 | LDR_instr +=4; 415 | printf("%s: NOPing %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,LDR_instr)); 416 | *(uint32_t*)LDR_instr = bswap32(0x00bf00bf); 417 | } 418 | *(uint32_t*)LDR_instr = bswap32(0xb001f0bf); 419 | } 420 | 421 | void* find_mount_upgrade_bl_10(struct iboot_img* iboot_in) { 422 | uint32_t ibec_str_loc = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "/boot/iBEC", strlen("/boot/iBEC"))); 423 | if (!ibec_str_loc) { 424 | printf("%s: Failed to find /boot/iBEC string\n", __FUNCTION__); 425 | return 0; 426 | } 427 | printf("%s: Found /boot/iBEC at %p\n", __FUNCTION__, ibec_str_loc); 428 | void* ibec_str_ldr = find_next_LDR_insn_with_value(iboot_in, ibec_str_loc); 429 | if (!ibec_str_ldr) { 430 | printf("%s: Failed to find /boot/iBEC LDR\n", __FUNCTION__); 431 | return 0; 432 | } 433 | printf("%s: Found /boot/apticket.der at %p\n", __FUNCTION__, GET_IBOOT_ADDR(iboot_in, ibec_str_ldr)); 434 | 435 | void* mount_partition_bl = bl_search_up(ibec_str_ldr,0x100); 436 | printf("%s: TEST STR1 %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,mount_partition_bl)); 437 | void* mount_partition = bl_search_up(mount_partition_bl-0x1,0x100); 438 | printf("%s: TEST STR2 %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,mount_partition)); 439 | uint32_t *dst = resolve_bl32(mount_partition); 440 | printf("%s: Found mount_partition routine at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst)); 441 | void* LDR_instr = dst; 442 | LDR_instr+=0x3; 443 | printf("%s: Creating LDR=nand0c at %p\n", __FUNCTION__,GET_IBOOT_FILE_OFFSET(iboot_in,LDR_instr)); 444 | *(uint32_t*)LDR_instr = bswap32(0x034800bf); 445 | for (int i=0;i<4;i++) { 446 | LDR_instr +=4; 447 | printf("%s: NOPing %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,LDR_instr)); 448 | *(uint32_t*)LDR_instr = bswap32(0x00bf00bf); 449 | } 450 | *(uint32_t*)LDR_instr = bswap32(0xb001f0bf); 451 | } 452 | void* find_iloader_offsets(struct iboot_img* iboot_in) { 453 | uint32_t breakpoint1_addr = GET_IBOOT_FILE_OFFSET(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "\x2f\x28", strlen("\x2f\x28"))); 454 | if (!breakpoint1_addr) { 455 | printf("%s: Failed to find cmp instruction\n", __FUNCTION__); 456 | return 0; 457 | } 458 | breakpoint1_addr += 0x44; 459 | printf("%s: Found breakpoint1_addr at %p\n", __FUNCTION__, breakpoint1_addr); 460 | 461 | /* fuck1-2-3_ADDR */ 462 | void* fuck1_ADDR = memstr(iboot_in->buf, iboot_in->len, "\x48\x24\xb0\xfa"); 463 | fuck1_ADDR += 0x14; 464 | if (!fuck1_ADDR) { 465 | printf("%s: Failed to find mov instruction\n", __FUNCTION__); 466 | return 0; 467 | } 468 | printf("%s: Found fuck1_ADDR at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,fuck1_ADDR)); 469 | fuck1_ADDR += 0x16; 470 | printf("%s: Found fuck2_ADDR at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,fuck1_ADDR)); 471 | uint32_t fuck3_ADDR_str = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "_memalign must be a power of two", strlen("_memalign must be a power of two"))); 472 | if (!fuck3_ADDR_str) { 473 | printf("%s: Failed to find str\n", __FUNCTION__); 474 | } 475 | void* fuck3_ADDR = find_next_LDR_insn_with_value(iboot_in, fuck3_ADDR_str); 476 | if (!fuck3_ADDR) { 477 | printf("%s: Failed to find ldr instruction\n", __FUNCTION__); 478 | } 479 | fuck3_ADDR -= 0x22; 480 | printf("%s: Found fuck3_ADDR at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,fuck3_ADDR)); 481 | 482 | /* wait_for_event_ADDR */ 483 | uint32_t wait_for_event_ADDR_str = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "0 < cp->c_resid", strlen("0 < cp->c_resid"))); 484 | void* wait_for_event_ADDR = find_next_LDR_insn_with_value(iboot_in, wait_for_event_ADDR_str); 485 | void* bl1 = bl_search_down(wait_for_event_ADDR,0x100); 486 | uint32_t *dst1 = resolve_bl32(bl1); 487 | void* bl2 = bl_search_down(dst1,0x100); 488 | uint32_t *dst2 = resolve_bl32(bl2-0x4); 489 | printf("%s: Found wait_for_event_ADDR at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst2)); 490 | 491 | /* hugechunk_ADDR */ 492 | void* hugechunk_ADDR = memstr(iboot_in->buf, iboot_in->len, "\x46\xf2\x6f\x70\xc6\xf6\x6f\x40"); 493 | hugechunk_ADDR -= 0x58; 494 | printf("%s: Found hugechunk_ADDR at %p\n", __FUNCTION__,GET_IBOOT_FILE_OFFSET(iboot_in,hugechunk_ADDR)); 495 | 496 | /* gpio_pin_state_ADDR */ 497 | /* 498 | void* unknown_str = memstr(iboot_in->buf, iboot_in->len, "\x3a\x3a\x0a\x00"); 499 | uint32_t* unknown_xref = iboot_memmem(iboot_in, unknown_str); 500 | void* unknown_ldr = ldr_to(unknown_xref); 501 | unknown_ldr -= 0x10; 502 | printf("%s: Found ldr at %p\n", __FUNCTION__,(void*) GET_IBOOT_FILE_OFFSET(iboot_in, unknown_ldr)); 503 | void* bl_gpio = bl_search_up(unknown_ldr, 0x100); 504 | printf("%s: Found bl at %p\n", __FUNCTION__,(void*) GET_IBOOT_FILE_OFFSET(iboot_in, bl_gpio)); 505 | uint32_t *dst = resolve_bl32(bl_gpio); 506 | printf("%s: Found gpio_pin_state_ADDR at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst-1)); 507 | */ // this offset changes on some devices, it can't be universally found 508 | 509 | /* readp_ADDR */ 510 | 511 | void* readp_ADDR = memstr(iboot_in->buf, iboot_in->len, "\xD0\xF8\x24\x90"); 512 | readp_ADDR -= 0xC; 513 | printf("%s: Found readp_ADDR at %p\n", __FUNCTION__,GET_IBOOT_FILE_OFFSET(iboot_in,readp_ADDR)); 514 | 515 | /* get_mem_size_ADDR */ 516 | /* 517 | void* get_mem_size_ADDR = memstr(iboot_in->buf, iboot_in->len, "\xA5\xFB\x01\x02"); 518 | get_mem_size_ADDR -= 0x18; 519 | printf("%s: Found get_mem_size_ADDR at %p\n", __FUNCTION__,GET_IBOOT_FILE_OFFSET(iboot_in,get_mem_size_ADDR)); 520 | */ // this offset changes on some devices, it can't be universally found 521 | 522 | /* putchar_ADDR */ 523 | 524 | void* putchar_ADDR = memstr(iboot_in->buf, iboot_in->len, "\x01\xAF\x04\xbf"); 525 | putchar_ADDR -= 0x6; 526 | printf("%s: Found putchar_ADDR at %p\n", __FUNCTION__,GET_IBOOT_FILE_OFFSET(iboot_in,putchar_ADDR)); 527 | 528 | /* adjust_stack_ADDR */ 529 | 530 | void* main_str = memstr(iboot_in->buf, iboot_in->len, "\x6d\x61\x69\x6e\x00"); 531 | uint32_t* main_xref = iboot_memmem(iboot_in, main_str); 532 | void* main_ldr = ldr_to(main_xref); 533 | main_ldr -= 0x8; 534 | uint32_t *dst = resolve_bl32(main_ldr); 535 | printf("%s: Found adjust_stack_ADDR at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst-1)); 536 | 537 | /* adjust_environ_ADDR */ 538 | 539 | void* false_resume_str = memstr(iboot_in->buf, iboot_in->len, "false == resume"); 540 | uint32_t* false_resume_xref = iboot_memmem(iboot_in, false_resume_str); 541 | void* adjust_environ_ADDR = false_resume_xref; 542 | printf("%s: Found adjust_environ_ADDR at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,adjust_environ_ADDR + 4)); 543 | 544 | /* disable_interrupts_ADDR */ 545 | 546 | void* disable_interrupts_ADDR = memstr(iboot_in->buf, iboot_in->len, "\xb2\xf5\x7a\x7f"); 547 | disable_interrupts_ADDR += 0x1c; 548 | uint32_t *dst3 = resolve_bl32(disable_interrupts_ADDR); 549 | printf("%s: Found disable_interrupts_ADDR at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst3-1)); 550 | 551 | /* cache_stuff_ADDR */ 552 | 553 | void* mov_instr = memstr(iboot_in->buf, iboot_in->len, "\x4e\xf2\xf8\x71\xcf\xf6\xbf\x71"); 554 | void* cache_stuff_ADDR = push_r7_lr_search_up(mov_instr, 0x500); 555 | printf("%s: Found cache_stuff_ADDR at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,cache_stuff_ADDR)); 556 | 557 | /* wtf_ADDR */ 558 | 559 | uint32_t wtf_ADDR = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "\x50\xE8\x00\x1F\x21\xF0\x01\x01\x01\x60\x70\x47", strlen("\x50\xE8\x00\x1F\x21\xF0\x01\x01\x01\x60\x70\x47"))); 560 | if (!wtf_ADDR) { 561 | printf("%s: Failed to find wtf_ADDR\n", __FUNCTION__); 562 | printf("%s: You have to find it\n", __FUNCTION__); 563 | } 564 | printf("%s: Found wtf_ADDR at %p\n", __FUNCTION__,wtf_ADDR); 565 | 566 | /* iboot_warmup_ADDR */ 567 | 568 | void* iboot_warmup_ADDR = memstr(iboot_in->buf, iboot_in->len, "\x1f\x00\xc0\xe3"); 569 | if (!iboot_warmup_ADDR) { 570 | printf("%s: Failed to find wtf_ADDR\n", __FUNCTION__); 571 | printf("%s: You have to find it\n", __FUNCTION__); 572 | } 573 | iboot_warmup_ADDR += 0x5c; 574 | printf("%s: Found iboot_warmup_ADDR at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,iboot_warmup_ADDR)); 575 | 576 | /* iboot_start_ADDR */ 577 | 578 | uint32_t root_str = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "root filesystem mount failed", strlen("root filesystem mount failed"))); 579 | void* root_ldr = find_next_LDR_insn_with_value(iboot_in, root_str); 580 | void* iboot_start_ADDR = push_r7_lr_search_down(root_ldr, 0x500); 581 | printf("%s: Found iboot_start_ADDR at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,iboot_start_ADDR)); 582 | 583 | /* main_task_ADDR */ 584 | 585 | void* main_task_ADDR = push_r4_r7_lr_search_up(hugechunk_ADDR, 0x500); 586 | printf("%s: Found main_task_ADDR at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,main_task_ADDR)); 587 | 588 | /* panic_ADDR */ 589 | 590 | uint32_t stack_str = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "stack corrupted", strlen("stack corrupted"))); 591 | void* stack_ldr = find_next_LDR_insn_with_value(iboot_in, stack_str); 592 | void* panic_ADDR = push_r4_r7_lr_search_up(stack_ldr, 0x500); 593 | printf("%s: Found panic_ADDR at %p\n", __FUNCTION__,GET_IBOOT_FILE_OFFSET(iboot_in,panic_ADDR-2)); 594 | 595 | /* system_init_ADDR */ 596 | 597 | void* system_init_ADDR = bl_search_down(iboot_start_ADDR, 0x100); 598 | system_init_ADDR += 4; 599 | uint32_t *dst4 = resolve_bl32(system_init_ADDR); 600 | printf("%s: Found system_init_ADDR at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst4-1)); 601 | 602 | /* task_create_ADDR */ 603 | 604 | system_init_ADDR += 10; 605 | void* task_create_ADDR = bl_search_down(system_init_ADDR, 0x20); 606 | uint32_t *dst5 = resolve_bl32(task_create_ADDR); 607 | printf("%s: Found task_create_ADDR at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst5-1)); 608 | 609 | /* task_start_ADDR */ 610 | 611 | task_create_ADDR += 4; 612 | uint32_t *dst6 = resolve_bl32(task_create_ADDR); 613 | printf("%s: Found task_start_ADDR at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst6-1)); 614 | 615 | /* task_exit_ADDR */ 616 | 617 | char *next_bl = bl_search_down(dst6,0x100); 618 | void* task_exit_ADDR = push_r7_lr_search_down(next_bl, 0x500); 619 | printf("%s: Found task_exit_ADDR at %p\n", __FUNCTION__,GET_IBOOT_FILE_OFFSET(iboot_in, task_exit_ADDR)); 620 | 621 | /* printf_ADDR */ 622 | 623 | uint32_t panic_str = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "Panic saved, full reset.", strlen("Panic saved, full reset."))); 624 | void* panic_ldr = find_next_LDR_insn_with_value(iboot_in, panic_str); 625 | void* printf_ADDR = bl_search_down(panic_ldr, 0x100); 626 | uint32_t *dst7 = resolve_bl32(printf_ADDR); 627 | printf("%s: Found printf_ADDR at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst7-1)); 628 | 629 | /* malloc_ADDR */ 630 | 631 | uint32_t boot_ramdisk_str = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "boot-ramdisk", strlen("boot-ramdisk"))); 632 | void* boot_ramdisk_ldr = find_next_LDR_insn_with_value(iboot_in, boot_ramdisk_str); 633 | void* push_instr = push_r4_r7_lr_search_up(boot_ramdisk_ldr, 0x500); 634 | void* malloc_ADDR = bl_search_down(push_instr, 0x100); 635 | uint32_t *dst8 = resolve_bl32(malloc_ADDR); 636 | printf("%s: Found malloc_ADDR at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst8-1)); 637 | 638 | 639 | /* free_ADDR */ 640 | 641 | uint32_t ramdisk_file_str = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "ramdisk file invalid", strlen("ramdisk file invalid"))); 642 | void* ramdisk_file_ldr = find_next_LDR_insn_with_value(iboot_in,ramdisk_file_str); 643 | void* push_instr2 = find_next_CMP_insn_with_value(ramdisk_file_ldr, 0x100, 0); 644 | void* free_ADDR = bl_search_down(push_instr2, 0x100); 645 | uint32_t *dst9 = resolve_bl32(free_ADDR); 646 | printf("%s: Found free_ADDR at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst9-1)); 647 | 648 | /* create_envvar_ADDR */ 649 | 650 | uint32_t build_style_str = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "build-style", strlen("build-style"))); 651 | void* build_style_ldr = find_next_LDR_insn_with_value(iboot_in,build_style_str); 652 | void* create_envvar_ADDR = bl_search_down(build_style_ldr, 0x100); 653 | uint32_t *dst10 = resolve_bl32(create_envvar_ADDR); 654 | printf("%s: Found create_envvar_ADDR at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst10-1)); 655 | 656 | /* bcopy_ADDR */ 657 | 658 | uint32_t hfs_str = GET_IBOOT_ADDR(iboot_in, memmem(iboot_in -> buf, iboot_in -> len, "HFSInitPartition: %p", strlen("HFSInitPartition: %p"))); 659 | void* hfs_ldr = find_next_LDR_insn_with_value(iboot_in,hfs_str); 660 | void* bcopy_ADDR = blx_search_up(hfs_ldr, 0x500); 661 | uint32_t *dst11 = resolve_bl32(bcopy_ADDR); 662 | printf("%s: Found bcopy_ADDR at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst11)); 663 | 664 | /* decompress_lzss_ADDR */ 665 | 666 | void* mov_instr1 = memstr(iboot_in->buf, iboot_in->len, "\x46\xf2\x62\x72"); 667 | void* decompress_lzss_ADDR = bl_search_up(mov_instr1, 0x500); 668 | uint32_t *dst12 = resolve_bl32(decompress_lzss_ADDR); 669 | printf("%s: Found decompress_lzss_ADDR at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst12-1)); 670 | return 0; 671 | } 672 | -------------------------------------------------------------------------------- /functions.c: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2013-2016, iH8sn0w. 3 | * 4 | * This file is part of iBoot32Patcher. 5 | * 6 | * iBoot32Patcher is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * iBoot32Patcher is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with iBoot32Patcher. If not, see . 18 | */ 19 | 20 | #include 21 | #include 22 | #include 23 | #include 24 | 25 | void* bl_search_down(const void* start_addr, int len) { 26 | return pattern_search(start_addr, len, 0xD000F000, 0xD000F800, 1); 27 | } 28 | 29 | void* bl_search_up(const void* start_addr, int len) { 30 | return pattern_search(start_addr, len, 0xD000F000, 0xD000F800, -1); 31 | } 32 | void* blx_search_down(const void* start_addr, int len) { 33 | return pattern_search(start_addr, len, 0xE800F000, 0xE800F800, 1); 34 | } 35 | void* blx_search_up(const void* start_addr, int len) { 36 | return pattern_search(start_addr, len, 0xE800F000, 0xE800F800, -1); 37 | } 38 | 39 | void* find_last_LDR_rd(uintptr_t start, size_t len, const uint8_t rd) { 40 | for(uintptr_t i = start; i > 0; i -= sizeof(uint16_t)) { 41 | void* prev_ldr = pattern_search((void*) i, len, 0x00004800, 0x0000F800, -2); 42 | struct arm32_thumb_LDR* ldr = (struct arm32_thumb_LDR*) prev_ldr; 43 | 44 | if(ldr == NULL) { 45 | break; 46 | } else if(ldr->rd == rd) { 47 | return (void*) prev_ldr; 48 | } 49 | i = ((uintptr_t) prev_ldr - sizeof(uint16_t)); 50 | } 51 | return NULL; 52 | } 53 | 54 | void* find_next_bl_insn_to(struct iboot_img* iboot_in, uint32_t addr) { 55 | for(int i = 0; i < iboot_in->len - sizeof(uint32_t); i++) { 56 | void* possible_bl = resolve_bl32(iboot_in->buf + i); 57 | uint32_t resolved = (uintptr_t) GET_IBOOT_FILE_OFFSET(iboot_in, possible_bl); 58 | if(resolved == addr) { 59 | return (void*) (iboot_in->buf + i); 60 | } 61 | } 62 | return NULL; 63 | } 64 | 65 | void* find_next_CMP_insn_with_value(void* start, size_t len, const uint8_t val) { 66 | for(int i = 0; i < len; i += sizeof(uint16_t)) { 67 | struct arm32_thumb* insn = (struct arm32_thumb*) (start + i); 68 | if(insn->op == ARM32_THUMB_CMP && insn->offset == val) { 69 | return (void*) insn; 70 | } 71 | } 72 | return NULL; 73 | } 74 | 75 | void* find_next_LDR_insn_with_value(struct iboot_img* iboot_in, uint32_t value) { 76 | void* ldr_xref = (void*) memmem(iboot_in->buf, iboot_in->len, &value, sizeof(value)); 77 | if(!ldr_xref) { 78 | printf("%s: Unable to find an LDR xref for 0x%X!\n", __FUNCTION__, value); 79 | return 0; 80 | } 81 | void* ldr_insn = ldr_to(ldr_xref); 82 | if(!ldr_insn) { 83 | printf("%s: Unable to resolve to LDR insn from xref %p!\n", __FUNCTION__, ldr_xref); 84 | return 0; 85 | } 86 | return ldr_insn; 87 | } 88 | 89 | void* find_next_MOVW_insn_with_value(void* start, size_t len, const uint16_t val) { 90 | for(int i = 0; i < len; i += sizeof(uint16_t)) { 91 | struct arm32_thumb_MOVW* candidate = (struct arm32_thumb_MOVW*) (start + i); 92 | if(is_MOVW_insn(start + i) && get_MOVW_val(candidate) == val) { 93 | return (void*) candidate; 94 | } 95 | } 96 | return NULL; 97 | } 98 | 99 | uint32_t get_iboot_base_address(void* iboot_buf) { 100 | if(iboot_buf) { 101 | return *(uint32_t*)(iboot_buf + 0x20) & ~0xFFFFF; 102 | } 103 | return 0; 104 | } 105 | 106 | int get_os_version(struct iboot_img* iboot_in) { 107 | for(int i = 0; i < sizeof(iboot_intervals)/sizeof(struct iboot_interval); i++) { 108 | if(iboot_in->VERS >= iboot_intervals[i].low && iboot_in->VERS <= iboot_intervals[i].high) { 109 | return iboot_intervals[i].os; 110 | } 111 | } 112 | return 0; 113 | } 114 | 115 | uint16_t get_MOVW_val(struct arm32_thumb_MOVW* movw) { 116 | return (uint16_t) (((movw->imm4 << 4) + (movw->i << 3) + movw->imm3) << 8) + movw->imm8; 117 | } 118 | 119 | uint16_t get_MOVT_W_val(struct arm32_thumb_MOVT_W* movt_w) { 120 | return get_MOVW_val((struct arm32_thumb_MOVW*) movt_w); 121 | } 122 | 123 | bool has_kernel_load(struct iboot_img* iboot_in) { 124 | void* debug_enabled_str = memstr(iboot_in->buf, iboot_in->len, KERNELCACHE_PREP_STRING); 125 | 126 | return (bool) (debug_enabled_str != NULL); 127 | } 128 | 129 | bool has_recovery_console(struct iboot_img* iboot_in) { 130 | void* entering_recovery_str = memstr(iboot_in->buf, iboot_in->len, ENTERING_RECOVERY_CONSOLE); 131 | 132 | return (bool) (entering_recovery_str != NULL); 133 | } 134 | 135 | void* iboot_memmem(struct iboot_img* iboot_in, void* pat) { 136 | uint32_t new_pat = (uintptr_t) GET_IBOOT_ADDR(iboot_in, pat); 137 | 138 | return (void*) memmem(iboot_in->buf, iboot_in->len, &new_pat, sizeof(uint32_t)); 139 | } 140 | 141 | bool is_BW_insn(void* offset) { 142 | struct arm32_thumb_BW_T4* bw = (struct arm32_thumb_BW_T4*) offset; 143 | uintptr_t ptr = (uintptr_t) offset; 144 | if(bw->pad0 == 0x1E && bw->pad1 == 2 && bw->bit12 == 1 && (ptr & 1)) { 145 | return true; 146 | } 147 | return false; 148 | } 149 | 150 | bool is_LDRW_insn(void* offset) { 151 | struct arm32_thumb_LDR_T3* test = (struct arm32_thumb_LDR_T3*) offset; 152 | if(test->pad == 0xF8D) { 153 | return true; 154 | } 155 | return false; 156 | } 157 | 158 | bool is_MOVT_W_insn(void* offset) { 159 | struct arm32_thumb_MOVT_W* test = (struct arm32_thumb_MOVT_W*) offset; 160 | if(test->pad0 == 0x2C && test->pad1 == 0x1E && test->bit31 == 0) { 161 | return true; 162 | } 163 | return false; 164 | } 165 | 166 | bool is_MOVW_insn(void* offset) { 167 | struct arm32_thumb_MOVW* test = (struct arm32_thumb_MOVW*) offset; 168 | if(test->pad0 == 0x24 && test->pad1 == 0x1E && test->bit31 == 0) { 169 | return true; 170 | } 171 | return false; 172 | } 173 | 174 | bool is_IT_insn(void* offset) { 175 | struct arm32_thumb_IT_T1* it = (struct arm32_thumb_IT_T1*) offset; 176 | if(it->pad == 0xBF) { 177 | return true; 178 | } 179 | return false; 180 | } 181 | 182 | void* ldr_pcrel_search_up(const void* start_addr, int len) { 183 | char *caddr = (char*)start_addr; 184 | for (unsigned char i = 0; i< 0xff; i++) { 185 | len -=4; 186 | if (len < 0) 187 | return NULL; //out of mem 188 | caddr -=4; 189 | 190 | uint32_t x = *(uint32_t*)caddr; 191 | if ((x & 0xF8FF0000) == (0x48000000 | (i<<16))) 192 | return (void*)(caddr+2); 193 | else if ((x & 0x0000F8FF) == (0x00004800 | i)) 194 | return (void*)(caddr); 195 | } 196 | return NULL; 197 | } 198 | 199 | void* ldr_search_down(const void* start_addr, int len) { 200 | return pattern_search(start_addr, len, 0x00004800, 0x0000F800, 1); 201 | } 202 | 203 | void* ldr_search_up(const void* start_addr, int len) { 204 | return pattern_search(start_addr, len, 0x00004800, 0x0000F800, -1); 205 | } 206 | 207 | void* ldr32_search_up(const void* start_addr, int len) { 208 | return pattern_search(start_addr, len, 0x0000F8DF, 0x0000FFFF, -1); 209 | } 210 | 211 | void* ldr_to(const void* loc) { 212 | uintptr_t xref_target = (uintptr_t)loc; 213 | uintptr_t i = xref_target; 214 | uintptr_t min_addr = xref_target - 0x420; 215 | for(; i > min_addr; i -= 2) { 216 | i = (uintptr_t)ldr_search_up((void*)i, i - min_addr); 217 | if (i == 0) { 218 | break; 219 | } 220 | 221 | uint32_t dw = *(uint32_t*)i; 222 | uintptr_t ldr_target = ((i + 4) & ~3) + ((dw & 0xff) << 2); 223 | if (ldr_target == xref_target) { 224 | return (void*)i; 225 | } 226 | } 227 | 228 | min_addr = xref_target - 0x1000; 229 | for(i = xref_target; i > min_addr; i -= 4) { 230 | i = (uintptr_t)ldr32_search_up((void*)i, i - min_addr); 231 | if (i == 0) { 232 | break; 233 | } 234 | uint32_t dw = *(uint32_t*)i; 235 | uintptr_t ldr_target = ((i + 4) & ~3) + ((dw >> 16) & 0xfff); 236 | if (ldr_target == xref_target) { 237 | return (void*)i; 238 | } 239 | } 240 | return NULL; 241 | } 242 | 243 | void* _memmem(const void* mem, int size, const void* pat, int size2) { 244 | char* cmem = (char*)mem; 245 | const char* cpat = (const char*)pat; 246 | for (int i = 0; i < size; i++) { 247 | for (int j = 0; j < size2; ++j) { 248 | if (cmem[i + j] != cpat[j]) 249 | goto next; 250 | } 251 | return (void*)(cmem + i); 252 | next: 253 | continue; 254 | } 255 | return NULL; 256 | } 257 | 258 | void* memstr(const void* mem, size_t size, const char* str) { 259 | return (void*) memmem(mem, size, str, strlen(str)); 260 | } 261 | 262 | void* pattern_search(const void* addr, int len, int pattern, int mask, int step) { 263 | char* caddr = (char*)addr; 264 | if (len <= 0) 265 | return NULL; 266 | if (step < 0) { 267 | len = -len; 268 | len &= ~-(step+1); 269 | } else { 270 | len &= ~(step-1); 271 | } 272 | for (int i = 0; i != len; i += step) { 273 | uint32_t x = *(uint32_t*)(caddr + i); 274 | if ((x & mask) == pattern) 275 | return (void*)(caddr + i); 276 | } 277 | return NULL; 278 | } 279 | 280 | void* push_r4_r7_lr_search_up(const void* start_addr, int len) { 281 | // F0 B5 282 | return pattern_search(start_addr, len, 0x0000B5F0, 0x0000FFFF, -2); 283 | } 284 | 285 | void* push_r7_lr_search_up(const void* start_addr, int len) { 286 | // 80 B5 287 | return pattern_search(start_addr, len, 0x0000B580, 0x0000FFFF, -2); 288 | } 289 | void* push_r7_lr_search_down(const void* start_addr, int len) { 290 | // 80 B5 291 | return pattern_search(start_addr, len, 0x0000B580, 0x0000FFFF, 2); 292 | } 293 | 294 | void* pop_search(const void* start_addr, int len, int searchup) { 295 | return pattern_search(start_addr, len, 0b1011110<<9, 0xFE<<8, 2 - 4 * (searchup!=0)); 296 | } 297 | 298 | void* push_search(const void* start_addr, int len, int searchup) { 299 | return pattern_search(start_addr, len, 0b1011010<<9, 0xFE<<8, 2 - 4 * (searchup!=0)); 300 | } 301 | 302 | void* branch_thumb_unconditional_search(const void* start_addr, int len, int searchup) { 303 | return pattern_search(start_addr, len, 0b11100<<11, 0b11111<<11, 2 - 4 * (searchup!=0)); 304 | } 305 | 306 | void* branch_thumb_conditional_search(const void* start_addr, int len, int searchup) { 307 | return pattern_search(start_addr, len, 0b1101<<12, 0b1111<<12, 2 - 4 * (searchup!=0)); 308 | } 309 | 310 | void* branch_search(const void* start_addr, int len, int searchup) { 311 | void *ret = 0; 312 | void *tmp = 0; 313 | if ((tmp = branch_thumb_unconditional_search(start_addr, len, searchup))){ 314 | if (!ret || ((!searchup && tmp < ret) || (searchup && tmp > ret))) 315 | ret = tmp; 316 | }else if ((tmp = branch_thumb_conditional_search(start_addr, len, searchup))){ 317 | if (!ret || ((!searchup && tmp < ret) || (searchup && tmp > ret))) 318 | ret = tmp; 319 | } 320 | return ret; 321 | } 322 | 323 | 324 | /* Taken from saurik's substrate framework. (See Hooker.cpp) */ 325 | void* resolve_bl32(const void* bl) { 326 | union { 327 | uint16_t value; 328 | 329 | struct { 330 | uint16_t immediate : 10; 331 | uint16_t s : 1; 332 | uint16_t : 5; 333 | }; 334 | } bits = {*(uint16_t*)bl}; 335 | 336 | union { 337 | uint16_t value; 338 | 339 | struct { 340 | uint16_t immediate : 11; 341 | uint16_t j2 : 1; 342 | uint16_t x : 1; 343 | uint16_t j1 : 1; 344 | uint16_t : 2; 345 | }; 346 | } exts = {((uint16_t*)bl)[1]}; 347 | 348 | int32_t jump = 0; 349 | jump |= bits.s << 24; 350 | jump |= (~(bits.s ^ exts.j1) & 0x1) << 23; 351 | jump |= (~(bits.s ^ exts.j2) & 0x1) << 22; 352 | jump |= bits.immediate << 12; 353 | jump |= exts.immediate << 1; 354 | jump |= exts.x; 355 | jump <<= 7; 356 | jump >>= 7; 357 | 358 | return (void*) (bl + 4 + jump); 359 | } 360 | 361 | void set_MOVT_W_insn_val(void* offset, uint8_t rd, uint16_t val) { 362 | struct arm32_thumb_MOVT_W* movt_w = (struct arm32_thumb_MOVT_W*) offset; 363 | memset(movt_w, 0, sizeof(struct arm32_thumb_MOVT_W)); 364 | 365 | movt_w->pad0 = 0x2C; 366 | movt_w->pad1 = 0x1E; 367 | movt_w->rd = rd; 368 | movt_w->imm4 = (val >> 12); 369 | val &= ~(movt_w->imm4 << 12); 370 | movt_w->imm3 = (val >> 8); 371 | val &= ~(movt_w->imm3 << 8); 372 | movt_w->imm8 = val; 373 | 374 | if(get_MOVT_W_val(movt_w) != val) { 375 | movt_w->i = 1; 376 | } 377 | } 378 | 379 | void set_MOVW_insn_val(void* offset, uint8_t rd, uint16_t val) { 380 | struct arm32_thumb_MOVW* movw = (struct arm32_thumb_MOVW*) offset; 381 | memset(movw, 0, sizeof(struct arm32_thumb_MOVW)); 382 | 383 | movw->pad0 = 0x24; 384 | movw->pad1 = 0x1E; 385 | movw->rd = rd; 386 | movw->imm4 = (val >> 12); 387 | val &= ~(movw->imm4 << 12); 388 | movw->imm3 = (val >> 8); 389 | val &= ~(movw->imm3 << 8); 390 | movw->imm8 = val; 391 | 392 | if(get_MOVW_val(movw) != val) { 393 | movw->i = 1; 394 | } 395 | } 396 | -------------------------------------------------------------------------------- /iBoot32Patcher.c: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2013-2016, iH8sn0w. 3 | * 4 | * This file is part of iBoot32Patcher. 5 | * 6 | * iBoot32Patcher is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * iBoot32Patcher is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with iBoot32Patcher. If not, see . 18 | */ 19 | 20 | /* iBoot32Patcher 21 | * 22 | * Universal 32-bit iBoot patcher for iPhone OS 2.0 --> iOS 10 23 | * 24 | * Build: 25 | * clang iBoot32Patcher.c finders.c functions.c patchers.c -Wno-multichar -I. -o iBoot32Patcher 26 | * 27 | * Usage: 28 | * ./iBoot32Patcher iBoot.n49.RELEASE.dfu.decrypted iBoot.n49.RELEASE.dfu.patched 29 | * ./iBoot32Patcher iBoot.n49.RELEASE.dfu.decrypted iBoot.n49.RELEASE.dfu.patched -b "cs_enforcement_disable=1 -v" 30 | * ./iBoot32Patcher iBoot.n49.RELEASE.dfu.decrypted iBoot.n49.RELEASE.dfu.patched -b "cs_enforcement_disable=1" -c "ticket" 0x80000000 31 | * ./iBoot32Patcher iBoot.n49.RELEASE.dfu.decrypted iBoot.n49.RELEASE.dfu.patched -c "ticket" 0x80000000 32 | * 33 | */ 34 | 35 | #include 36 | #include 37 | #include 38 | #include 39 | 40 | #include 41 | #include 42 | #include 43 | #include 44 | #include 45 | 46 | #define HAS_ARG(x,y) (!strcmp(argv[i], x) && (i + y) < argc) 47 | 48 | int main(int argc, char** argv) { 49 | int ret = 0; 50 | FILE* fp = NULL; 51 | uint32_t cmd_handler_ptr = 0; 52 | char* cmd_handler_str = NULL; 53 | char* custom_boot_args = NULL; 54 | bool rsa_patch = false; 55 | bool debug_patch = false; 56 | bool ticket_patch = false; 57 | bool remote_patch = false; 58 | bool ignore_nvram_patch = false; 59 | bool dual_boot_patch = false; 60 | bool iloader_patch = false; 61 | char* custom_color = NULL; 62 | struct iboot_img iboot_in; 63 | 64 | memset(&iboot_in, 0, sizeof(iboot_in)); 65 | 66 | if(argc < 3) { 67 | printf("Usage: %s [args]\n", argv[0]); 68 | printf("\t-r\t\tApply RSA check patch\n"); 69 | printf("\t-d\t\tApply debug_enabled patch\n"); 70 | printf("\t-t\t\tApply ticket patch\n"); 71 | printf("\t-x\t\tApply iOS 10 remote boot patch\n"); 72 | printf("\t-b \tApply custom boot args\n"); 73 | printf("\t-c \tChange a command handler's pointer (hex)\n"); 74 | printf("\t-l RRGGBB\tApply custom background color\n"); 75 | printf("\t-i\t\tIgnore NVRAM boot-partition/ramdisk variables\n"); 76 | printf("\t--dual-boot\t\tApply patches needed for dual boot \n"); 77 | printf("\t--iloader\t\tApply patches needed for dual boot \n"); 78 | return -1; 79 | } 80 | 81 | printf("%s: Starting...\n", __FUNCTION__); 82 | 83 | for(int i = 0; i < argc; i++) { 84 | if(HAS_ARG("-b", 1)) { 85 | custom_boot_args = (char*) argv[i+1]; 86 | } 87 | 88 | if(HAS_ARG("-c", 2)) { 89 | cmd_handler_str = (char*) argv[i+1]; 90 | sscanf((char*) argv[i+2], "0x%08X", &cmd_handler_ptr); 91 | } 92 | 93 | if(HAS_ARG("-r", 0)) { 94 | rsa_patch = true; 95 | } 96 | 97 | if(HAS_ARG("-d", 0)) { 98 | debug_patch = true; 99 | } 100 | if(HAS_ARG("-t", 0)) { 101 | ticket_patch = true; 102 | } 103 | 104 | if(HAS_ARG("-x", 0)) { 105 | remote_patch = true; 106 | } 107 | 108 | if(HAS_ARG("-l", 1)) { 109 | custom_color = (char*) argv[i+1]; 110 | } 111 | 112 | if(HAS_ARG("-i", 0)) { 113 | ignore_nvram_patch = true; 114 | } 115 | if(HAS_ARG("--dual-boot", 0)) { 116 | dual_boot_patch = true; 117 | } 118 | if(HAS_ARG("--iloader", 0)) { 119 | iloader_patch = true; 120 | } 121 | 122 | } 123 | 124 | if (!rsa_patch && !debug_patch && !ticket_patch && !custom_boot_args && !cmd_handler_str && !remote_patch && !ignore_nvram_patch && !dual_boot_patch && !iloader_patch) { 125 | printf("%s: Nothing to patch!\n", __FUNCTION__); 126 | return -1; 127 | } 128 | 129 | fp = fopen(argv[1], "rb"); 130 | if(!fp) { 131 | printf("%s: Error opening %s!\n", __FUNCTION__, argv[1]); 132 | return -1; 133 | } 134 | 135 | fseek(fp, 0, SEEK_END); 136 | iboot_in.len = ftell(fp); 137 | fseek(fp, 0, SEEK_SET); 138 | 139 | iboot_in.buf = (void*)malloc(iboot_in.len); 140 | if(!iboot_in.buf) { 141 | printf("%s: Out of memory!\n", __FUNCTION__); 142 | fclose(fp); 143 | return -1; 144 | } 145 | 146 | fread(iboot_in.buf, 1, iboot_in.len, fp); 147 | fclose(fp); 148 | 149 | uint32_t image_magic = *(uint32_t*)iboot_in.buf; 150 | 151 | if(image_magic == IMAGE3_MAGIC) { 152 | printf("%s: The supplied image appears to be in an img3 container. Please ensure that the image is decrypted and that the img3 header is stripped.\n", __FUNCTION__); 153 | free(iboot_in.buf); 154 | return -1; 155 | } 156 | 157 | if(image_magic != IBOOT32_RESET_VECTOR_BYTES) { 158 | printf("%s: The supplied image is not a valid 32-bit iBoot.\n", __FUNCTION__); 159 | free(iboot_in.buf); 160 | return -1; 161 | } 162 | 163 | const char* iboot_vers_str = (iboot_in.buf + IBOOT_VERS_STR_OFFSET); 164 | 165 | iboot_in.VERS = atoi(iboot_vers_str); 166 | if(!iboot_in.VERS) { 167 | printf("%s: No iBoot version found!\n", __FUNCTION__); 168 | free(iboot_in.buf); 169 | return -1; 170 | } 171 | 172 | printf("%s: iBoot-%d inputted.\n", __FUNCTION__, iboot_in.VERS); 173 | 174 | /* Check to see if the loader has a kernel load routine before trying to apply custom boot args + debug-enabled override. */ 175 | if(has_kernel_load(&iboot_in)) { 176 | if(custom_boot_args) { 177 | ret = patch_boot_args(&iboot_in, custom_boot_args); 178 | if(!ret) { 179 | printf("%s: Error doing patch_boot_args()!\n", __FUNCTION__); 180 | free(iboot_in.buf); 181 | return -1; 182 | } 183 | } 184 | 185 | /* Only bootloaders with the kernel load routines pass the DeviceTree. */ 186 | 187 | if (debug_patch) { 188 | ret = patch_debug_enabled(&iboot_in); 189 | if(!ret) { 190 | printf("%s: Error doing patch_debug_enabled()!\n", __FUNCTION__); 191 | free(iboot_in.buf); 192 | return -1; 193 | } 194 | } 195 | 196 | 197 | if(custom_color) { 198 | ret = patch_bgcolor(&iboot_in, custom_color); 199 | if(!ret) { 200 | printf("%s: Error doing patch_bgcolor()!\n", __FUNCTION__); 201 | free(iboot_in.buf); 202 | return -1; 203 | } 204 | } 205 | 206 | if (remote_patch) { 207 | ret = patch_remote_boot(&iboot_in); 208 | if(!ret) { 209 | printf("%s: Error doing patch_remote_boot()!\n", __FUNCTION__); 210 | free(iboot_in.buf); 211 | return -1; 212 | } 213 | 214 | } 215 | 216 | } 217 | 218 | 219 | if (ticket_patch) { 220 | ret = patch_ticket_check(&iboot_in); 221 | if(!ret) { 222 | printf("%s: Error doing patch_ticket_check()!\n", __FUNCTION__); 223 | free(iboot_in.buf); 224 | return -1; 225 | } 226 | 227 | } 228 | 229 | /* Ensure that the loader has a shell. */ 230 | if(has_recovery_console(&iboot_in) && cmd_handler_str) { 231 | ret = patch_cmd_handler(&iboot_in, cmd_handler_str, cmd_handler_ptr); 232 | if(!ret) { 233 | printf("%s: Error doing patch_cmd_handler()!\n", __FUNCTION__); 234 | free(iboot_in.buf); 235 | return -1; 236 | } 237 | } 238 | 239 | /* All loaders have the RSA check. */ 240 | 241 | if (rsa_patch) { 242 | ret = patch_rsa_check(&iboot_in); 243 | if(!ret) { 244 | printf("%s: Error doing patch_rsa_check()!\n", __FUNCTION__); 245 | free(iboot_in.buf); 246 | return -1; 247 | } 248 | } 249 | 250 | if (ignore_nvram_patch) { 251 | ret = patch_ignore_nvram(&iboot_in); 252 | if(!ret) { 253 | printf("%s: Error doing ignore_nvram_patch()!\n", __FUNCTION__); 254 | free(iboot_in.buf); 255 | return -1; 256 | } 257 | } 258 | if (dual_boot_patch) { 259 | ret = patch_dual_boot(&iboot_in); 260 | if(!ret) { 261 | printf("%s: Error doing dual_boot_patch()!\n", __FUNCTION__); 262 | free(iboot_in.buf); 263 | return -1; 264 | } 265 | } 266 | if (iloader_patch) { 267 | ret = patch_iloader(&iboot_in); 268 | if(!ret) { 269 | printf("%s: Error doing iloader_patch()!\n", __FUNCTION__); 270 | free(iboot_in.buf); 271 | return -1; 272 | } 273 | } 274 | 275 | printf("%s: Writing out patched file to %s...\n", __FUNCTION__, argv[2]); 276 | 277 | /* Write out the patched file... */ 278 | fp = fopen(argv[2], "wb+"); 279 | if(!fp) { 280 | printf("%s: Unable to open %s!\n", __FUNCTION__, argv[2]); 281 | free(iboot_in.buf); 282 | return -1; 283 | } 284 | 285 | fwrite(iboot_in.buf, 1, iboot_in.len, fp); 286 | fflush(fp); 287 | fclose(fp); 288 | 289 | free(iboot_in.buf); 290 | 291 | printf("%s: Quitting...\n", __FUNCTION__); 292 | return 0; 293 | } 294 | -------------------------------------------------------------------------------- /include/arm32_defs.h: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2013-2016, iH8sn0w. 3 | * 4 | * This file is part of iBoot32Patcher. 5 | * 6 | * iBoot32Patcher is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * iBoot32Patcher is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with iBoot32Patcher. If not, see . 18 | */ 19 | 20 | #ifndef ARM_DEFS_H 21 | #define ARM_DEFS_H 22 | 23 | #define ARM32_THUMB_MOV 0 24 | #define ARM32_THUMB_CMP 1 25 | #define ARM32_THUMB_ADD 2 26 | #define ARM32_THUMB_SUB 3 27 | 28 | #define ARM32_THUMB_IT_NE __builtin_bswap16(0x18BF) 29 | #define ARM32_THUMB_IT_EQ __builtin_bswap16(0x08BF) 30 | 31 | struct arm32_thumb_LDR_T3 { 32 | uint8_t rn : 4; 33 | uint16_t pad : 12; 34 | uint16_t imm12 : 12; 35 | uint8_t rt : 4; 36 | } __attribute__ ((packed)); 37 | 38 | struct arm32_thumb_MOVW { 39 | uint8_t imm4 : 4; 40 | uint8_t pad0 : 6; 41 | uint8_t i : 1; 42 | uint8_t pad1 : 5; 43 | uint8_t imm8; 44 | uint8_t rd : 4; 45 | uint8_t imm3 : 3; 46 | uint8_t bit31 : 1; 47 | } __attribute__((packed)); 48 | 49 | struct arm32_thumb_MOVT_W { 50 | uint8_t imm4 : 4; 51 | uint8_t pad0 : 6; 52 | uint8_t i : 1; 53 | uint8_t pad1 : 5; 54 | uint8_t imm8; 55 | uint8_t rd : 4; 56 | uint8_t imm3 : 3; 57 | uint8_t bit31 : 1; 58 | } __attribute__((packed)); 59 | 60 | struct arm32_thumb_BW_T4 { 61 | uint16_t imm10 : 10; 62 | uint8_t s : 1; 63 | uint8_t pad0 : 5; 64 | uint16_t imm11 : 11; 65 | uint8_t j2 : 1; 66 | uint8_t bit12 : 1; 67 | uint8_t j1 : 1; 68 | uint8_t pad1 : 2; 69 | } __attribute__((packed)); 70 | 71 | struct arm32_thumb_IT_T1 { 72 | uint8_t mask : 4; 73 | uint8_t cond : 4; 74 | uint8_t pad : 8; 75 | }__attribute__((packed)); 76 | 77 | struct arm32_thumb_LDR { 78 | uint8_t imm8; 79 | uint8_t rd : 3; 80 | uint8_t padd : 5; 81 | } __attribute__((packed)); 82 | 83 | struct arm32_thumb_hi_reg_op { 84 | uint8_t rd : 3; 85 | uint8_t rs : 3; 86 | uint8_t h2 : 1; 87 | uint8_t h1 : 1; 88 | uint8_t op : 2; 89 | uint8_t pad : 6; 90 | } __attribute__((packed)); 91 | 92 | struct arm32_thumb { 93 | uint8_t offset : 8; 94 | uint8_t rd : 3; 95 | uint8_t op : 2; 96 | uint8_t one : 1; 97 | uint8_t z: 1; 98 | uint8_t zero : 1; 99 | } __attribute__((packed)); 100 | 101 | #endif 102 | -------------------------------------------------------------------------------- /include/finders.h: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2013-2016, iH8sn0w. 3 | * 4 | * This file is part of iBoot32Patcher. 5 | * 6 | * iBoot32Patcher is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * iBoot32Patcher is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with iBoot32Patcher. If not, see . 18 | */ 19 | 20 | #ifndef FINDERS_H 21 | #define FINDERS_H 22 | 23 | #include 24 | 25 | #define RSA_PATCH_IOS_4 "\x4F\xF0\xFF\x30\xDD\xF8\x40\x24\xDB\xF8\x00\x30\x9A\x42\x01\xD0" 26 | 27 | void* find_bl_verify_shsh(struct iboot_img* iboot_in); 28 | void* find_rsa_check_4(struct iboot_img* iboot_in); 29 | void* find_ldr_ecid(struct iboot_img* iboot_in); 30 | void* find_ldr_bord(struct iboot_img* iboot_in); 31 | void* find_ldr_prod(struct iboot_img* iboot_in); 32 | void* find_ldr_sepo(struct iboot_img* iboot_in); 33 | void* find_boot_partition_ldr(struct iboot_img* iboot_in); 34 | void* find_boot_ramdisk_ldr(struct iboot_img* iboot_in); 35 | void* find_bl_verify_shsh_5_6_7(struct iboot_img* iboot_in); 36 | void* find_bl_verify_shsh_generic(struct iboot_img* iboot_in); 37 | void* find_bl_verify_shsh_insn(struct iboot_img* iboot_in, void* pc); 38 | void* find_dtre_get_value_bl_insn(struct iboot_img* iboot_in, const char* var); 39 | void* find_verify_shsh_top(void* ptr); 40 | void* find_fsboot_str_xref(struct iboot_img* iboot_in); 41 | void* find_upgrade_str_loc(struct iboot_img* iboot_in); 42 | void* find_false_str_xref(struct iboot_img* iboot_in); 43 | void* find_true_str_loc(struct iboot_img* iboot_in); 44 | void* find_mount_upgrade_bl_8(struct iboot_img* iboot_in); 45 | void* find_mount_upgrade_bl_9(struct iboot_img* iboot_in); 46 | void* find_mount_upgrade_bl_10(struct iboot_img* iboot_in); 47 | 48 | #endif 49 | -------------------------------------------------------------------------------- /include/functions.h: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2013-2016, iH8sn0w. 3 | * 4 | * This file is part of iBoot32Patcher. 5 | * 6 | * iBoot32Patcher is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * iBoot32Patcher is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with iBoot32Patcher. If not, see . 18 | */ 19 | 20 | #ifndef FUNCTIONS_H 21 | #define FUNCTIONS_H 22 | 23 | #include 24 | #include 25 | 26 | #define ENTERING_RECOVERY_CONSOLE "Entering recovery mode, starting command prompt" 27 | #define KERNELCACHE_PREP_STRING "__PAGEZERO" 28 | 29 | #ifndef memmem 30 | #define memmem _memmem 31 | void* _memmem(const void* mem, int size, const void* pat, int size2); 32 | #endif 33 | 34 | void* bl_search_down(const void* start_addr, int len); 35 | void* bl_search_up(const void* start_addr, int len); 36 | void* blx_search_down(const void* start_addr, int len); 37 | void* blx_search_up(const void* start_addr, int len); 38 | void* iboot_memmem(struct iboot_img* iboot_in, void* pat); 39 | void* find_last_LDR_rd(uintptr_t start, size_t len, const uint8_t rd); 40 | void* find_next_bl_insn_to(struct iboot_img* iboot_in, uint32_t addr); 41 | void* find_next_CMP_insn_with_value(void* start, size_t len, const uint8_t val); 42 | void* find_next_LDR_insn_with_value(struct iboot_img* iboot_in, uint32_t value); 43 | void* find_next_MOVW_insn_with_value(void* start, size_t len, const uint16_t val); 44 | uint32_t get_iboot_base_address(void* iboot_buf); 45 | uint16_t get_MOVT_W_val(struct arm32_thumb_MOVT_W* movt_w); 46 | uint16_t get_MOVW_val(struct arm32_thumb_MOVW* movw); 47 | int get_os_version(struct iboot_img* iboot_in); 48 | bool has_kernel_load(struct iboot_img* iboot_in); 49 | bool has_recovery_console(struct iboot_img* iboot_in); 50 | bool is_BW_insn(void* offset); 51 | bool is_LDRW_insn(void* offset); 52 | bool is_MOVW_insn(void* offset); 53 | bool is_IT_insn(void* offset); 54 | void* ldr_search_down(const void* start_addr, int len); 55 | void* ldr_search_up(const void* start_addr, int len); 56 | void* ldr_pcrel_search_up(const void* start_addr, int len); 57 | void* ldr32_search_up(const void* start_addr, int len); 58 | void* ldr_to(const void* loc); 59 | void* memstr(const void* mem, size_t size, const char* str); 60 | void* pattern_search(const void* addr, int len, int pattern, int mask, int step); 61 | void* push_r4_r7_lr_search_up(const void* start_addr, int len); 62 | void* push_r7_lr_search_up(const void* start_addr, int len); 63 | void* push_r7_lr_search_down(const void* start_addr, int len); 64 | void* pop_search(const void* start_addr, int len, int searchup); 65 | void* push_search(const void* start_addr, int len, int searchup); 66 | void* branch_thumb_unconditional_search(const void* start_addr, int len, int searchup); 67 | void* branch_thumb_conditional_search(const void* start_addr, int len, int searchup); 68 | void* branch_search(const void* start_addr, int len, int searchup); 69 | void* resolve_bl32(const void* bl); 70 | void set_MOVT_W_insn_val(void* offset, uint8_t rd, uint16_t val); 71 | void set_MOVW_insn_val(void* offset, uint8_t rd, uint16_t val); 72 | 73 | #endif 74 | -------------------------------------------------------------------------------- /include/iBoot32Patcher.h: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2013-2016, iH8sn0w. 3 | * 4 | * This file is part of iBoot32Patcher. 5 | * 6 | * iBoot32Patcher is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * iBoot32Patcher is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with iBoot32Patcher. If not, see . 18 | */ 19 | 20 | #ifndef IBOOT32PATCHER_H 21 | #define IBOOT32PATCHER_H 22 | 23 | #include 24 | #include 25 | #include 26 | 27 | #define bswap32 __builtin_bswap32 28 | #define bswap16 __builtin_bswap16 29 | 30 | #define GET_IBOOT_FILE_OFFSET(iboot_in, x) (x - (uintptr_t) iboot_in->buf) 31 | #define GET_IBOOT_ADDR(iboot_in, x) (x - (uintptr_t) iboot_in->buf) + get_iboot_base_address(iboot_in->buf) 32 | 33 | #define IMAGE3_MAGIC 'Img3' 34 | #define IBOOT_VERS_STR_OFFSET 0x286 35 | #define IBOOT32_RESET_VECTOR_BYTES bswap32(0x0E0000EA) 36 | 37 | struct iboot_img { 38 | void* buf; 39 | size_t len; 40 | uint32_t VERS; 41 | } __attribute__((packed)); 42 | 43 | struct iboot32_cmd_t { 44 | uint32_t cmd_str_ptr; 45 | uint32_t cmd_ptr; 46 | uint32_t cmd_desc_str_ptr; 47 | } __attribute__((packed)); 48 | 49 | struct iboot64_cmd_t { 50 | uintptr_t cmd_str_ptr; 51 | uintptr_t cmd_ptr; 52 | uintptr_t cmd_desc_str_ptr; 53 | } __attribute__((packed)); 54 | 55 | struct iboot_interval { 56 | int low, high, os; 57 | } __attribute__((packed)); 58 | 59 | const static struct iboot_interval iboot_intervals[] = { 60 | {320, 590, 2}, 61 | {594, 817, 3}, 62 | {889, 1072, 4}, 63 | {1218, 1220, 5}, 64 | {1537, 1537, 6}, 65 | {1940, 1940, 7}, 66 | {2261, 2261, 8}, 67 | {2817, 2817, 9}, 68 | {3393, 3406, 10}, 69 | }; 70 | 71 | uint32_t get_iboot_base_address(void* iboot_buf); 72 | 73 | #endif 74 | -------------------------------------------------------------------------------- /include/patchers.h: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2013-2016, iH8sn0w. 3 | * 4 | * This file is part of iBoot32Patcher. 5 | * 6 | * iBoot32Patcher is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * iBoot32Patcher is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with iBoot32Patcher. If not, see . 18 | */ 19 | 20 | #ifndef PATCHERS_H 21 | #define PATCHERS_H 22 | 23 | #include 24 | 25 | #define DEBUG_ENABLED_DTRE_VAR_STR "debug-enabled" 26 | #define DEFAULT_BOOTARGS_STR "rd=md0 nand-enable-reformat=1 -progress" 27 | #define RELIANCE_CERT_STR "Reliance on this certificate" 28 | 29 | int patch_boot_args(struct iboot_img* iboot_in, const char* boot_args); 30 | int patch_cmd_handler(struct iboot_img* iboot_in, const char* cmd_str, uint32_t ptr); 31 | int patch_debug_enabled(struct iboot_img* iboot_in); 32 | int patch_rsa_check(struct iboot_img* iboot_in); 33 | int ignore_nvram_patch(struct iboot_img* iboot_in); 34 | int patch_ticket_check(struct iboot_img* iboot_in); 35 | int patch_remote_boot(struct iboot_img* iboot_in); 36 | int patch_bgcolor(struct iboot_img* iboot_in, const char* bgcolor); 37 | int patch_dual_boot(struct iboot_img* iboot_in); 38 | int patch_iloader(struct iboot_img* iboot_in); 39 | 40 | #endif 41 | -------------------------------------------------------------------------------- /patchers.c: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2013-2016, iH8sn0w. 3 | * 4 | * This file is part of iBoot32Patcher. 5 | * 6 | * iBoot32Patcher is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * iBoot32Patcher is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with iBoot32Patcher. If not, see . 18 | */ 19 | 20 | #include 21 | #include 22 | #include 23 | #include 24 | #include 25 | #include 26 | 27 | #define MEMMEM_RELATIVE(iboot_in, bufstart, needle, needleLen) memmem(bufstart, iboot_in->len - ((char*)(bufstart) - (char*)iboot_in->buf), needle, needleLen) 28 | 29 | int patch_boot_args(struct iboot_img* iboot_in, const char* boot_args) { 30 | printf("%s: Entering...\n", __FUNCTION__); 31 | 32 | /* Find the pre-defined boot-args from iBoot "rd=md0 ..." */ 33 | void* default_boot_args_str_loc = memstr(iboot_in->buf, iboot_in->len, DEFAULT_BOOTARGS_STR); 34 | if(!default_boot_args_str_loc) { 35 | printf("%s: Unable to find default boot-args string!\n", __FUNCTION__); 36 | return 0; 37 | } 38 | printf("%s: Default boot-args string is at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, default_boot_args_str_loc)); 39 | 40 | /* Find the boot-args string xref within the kernel load routine. */ 41 | void* default_boot_args_xref = iboot_memmem(iboot_in, default_boot_args_str_loc); 42 | if(!default_boot_args_xref) { 43 | printf("%s: Unable to find default boot-args string xref!\n", __FUNCTION__); 44 | return 0; 45 | } 46 | printf("%s: boot-args xref is at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, default_boot_args_xref)); 47 | 48 | /* If new boot-args length exceeds the pre-defined one in iBoot, we need to point the xref somewhere else... */ 49 | if(strlen(boot_args) > strlen(DEFAULT_BOOTARGS_STR)) { 50 | printf("%s: Relocating boot-args string...\n", __FUNCTION__); 51 | 52 | /* Find the "Reliance on this cert..." string. */ 53 | char* reliance_cert_str_loc = (char*) memstr(iboot_in->buf, iboot_in->len, RELIANCE_CERT_STR); 54 | if(!reliance_cert_str_loc) { 55 | printf("%s: Unable to find \"%s\" string!\n", __FUNCTION__, RELIANCE_CERT_STR); 56 | return 0; 57 | } 58 | printf("%s: \"%s\" string found at %p\n", __FUNCTION__, RELIANCE_CERT_STR, GET_IBOOT_FILE_OFFSET(iboot_in, reliance_cert_str_loc)); 59 | 60 | /* Point the boot-args xref to the "Reliance on this cert..." string. */ 61 | printf("%s: Pointing default boot-args xref to %p...\n", __FUNCTION__, GET_IBOOT_ADDR(iboot_in, reliance_cert_str_loc)); 62 | *(uint32_t*)default_boot_args_xref = (uintptr_t) GET_IBOOT_ADDR(iboot_in, reliance_cert_str_loc); 63 | 64 | default_boot_args_str_loc = reliance_cert_str_loc; 65 | } 66 | printf("%s: Applying custom boot-args \"%s\"\n", __FUNCTION__, boot_args); 67 | strcpy(default_boot_args_str_loc, boot_args); 68 | 69 | /* This is where things get tricky... (Might run into issues on older loaders)*/ 70 | 71 | /* Patch out the conditional branches... */ 72 | void* _ldr_rd_boot_args = ldr_to(default_boot_args_xref); 73 | if(!_ldr_rd_boot_args) { 74 | uintptr_t default_boot_args_str_loc_with_base = (uintptr_t) GET_IBOOT_FILE_OFFSET(iboot_in, default_boot_args_str_loc) + get_iboot_base_address(iboot_in->buf); 75 | 76 | _ldr_rd_boot_args = find_next_LDR_insn_with_value(iboot_in, (uint32_t) default_boot_args_str_loc_with_base); 77 | if(!_ldr_rd_boot_args) { 78 | printf("%s: Error locating LDR Rx, =boot_args!\n", __FUNCTION__); 79 | return 0; 80 | } 81 | } 82 | 83 | struct arm32_thumb_LDR* ldr_rd_boot_args = (struct arm32_thumb_LDR*) _ldr_rd_boot_args; 84 | printf("%s: Found LDR R%d, =boot_args at %p\n", __FUNCTION__, ldr_rd_boot_args->rd, GET_IBOOT_FILE_OFFSET(iboot_in, _ldr_rd_boot_args)); 85 | 86 | /* Find next CMP Rd, #0 instruction... */ 87 | void* _cmp_insn = find_next_CMP_insn_with_value(ldr_rd_boot_args, 0x100, 0); 88 | if(!_cmp_insn) { 89 | printf("%s: Error locating next CMP instruction!\n", __FUNCTION__); 90 | return 0; 91 | } 92 | 93 | struct arm32_thumb* cmp_insn = (struct arm32_thumb*) _cmp_insn; 94 | void* arm32_thumb_IT_insn = _cmp_insn; 95 | 96 | printf("%s: Found CMP R%d, #%d at %p\n", __FUNCTION__, cmp_insn->rd, cmp_insn->offset, GET_IBOOT_FILE_OFFSET(iboot_in, _cmp_insn)); 97 | 98 | /* Find the next IT EQ/IT NE instruction following the CMP Rd, #0 instruction... (kinda hacky) */ 99 | while(*(uint16_t*)arm32_thumb_IT_insn != ARM32_THUMB_IT_EQ && *(uint16_t*)arm32_thumb_IT_insn != ARM32_THUMB_IT_NE) { 100 | arm32_thumb_IT_insn++; 101 | } 102 | 103 | printf("%s: Found IT EQ/IT NE at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, arm32_thumb_IT_insn)); 104 | 105 | /* MOV Rd, Rs instruction usually follows right after the IT instruction. */ 106 | struct arm32_thumb_hi_reg_op* mov_insn = (struct arm32_thumb_hi_reg_op*) (arm32_thumb_IT_insn + 2); 107 | 108 | printf("%s: Found MOV R%d, R%d at %p\n", __FUNCTION__, mov_insn->rd, mov_insn->rs, GET_IBOOT_FILE_OFFSET(iboot_in, arm32_thumb_IT_insn + 2)); 109 | 110 | /* Find the last LDR Rd which holds the null string pointer... */ 111 | int null_str_reg = (ldr_rd_boot_args->rd == mov_insn->rs) ? mov_insn->rd : mov_insn->rs; 112 | 113 | /* + 0x10: Some iBoots have the null string load after the CMP instruction... */ 114 | int os_vers = get_os_version(iboot_in); 115 | if(os_vers <= 4) { 116 | return 1; 117 | } 118 | void* ldr_null_str = find_last_LDR_rd((uintptr_t) (_cmp_insn + 0x10), 0x200, null_str_reg); 119 | if(!ldr_null_str) { 120 | printf("%s: Unable to find LDR R%d, =null_str\n", __FUNCTION__, null_str_reg); 121 | return 0; 122 | } 123 | 124 | printf("%s: Found LDR R%d, =null_str at %p\n", __FUNCTION__, null_str_reg, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_null_str)); 125 | 126 | /* Calculate the new PC relative load from the default boot args xref to the LDR Rd, =null_string location. */ 127 | uint32_t diff = (uint32_t) (GET_IBOOT_FILE_OFFSET(iboot_in, default_boot_args_xref) - GET_IBOOT_FILE_OFFSET(iboot_in, ldr_null_str)); 128 | 129 | /* T1 LDR PC-based instructions use the immediate 8 bits multiplied by 4. */ 130 | struct arm32_thumb_LDR* ldr_rd_null_str = (struct arm32_thumb_LDR*) ldr_null_str; 131 | printf("%s: Pointing LDR R%d, =null_str to boot-args xref...\n", __FUNCTION__, ldr_rd_null_str->rd); 132 | ldr_rd_null_str->imm8 = (diff / 0x4); 133 | 134 | printf("%s: Leaving...\n", __FUNCTION__); 135 | return 1; 136 | } 137 | 138 | int patch_cmd_handler(struct iboot_img* iboot_in, const char* cmd_str, uint32_t ptr) { 139 | printf("%s: Entering...\n", __FUNCTION__); 140 | 141 | size_t cmd_str_len = strlen(cmd_str); 142 | size_t cmd_bytes_len = cmd_str_len + 2; 143 | 144 | char* cmd_bytes = (char*)malloc(cmd_bytes_len); 145 | if(!cmd_bytes) { 146 | printf("%s: Out of memory.\n", __FUNCTION__); 147 | return 0; 148 | } 149 | 150 | memset(cmd_bytes, 0, cmd_bytes_len); 151 | 152 | /* Fill the buffer to make the string look like \0\0 */ 153 | for(int i = 0; i < cmd_str_len; i++) { 154 | cmd_bytes[i+1] = cmd_str[i]; 155 | } 156 | 157 | /* Find the cmd handler string... */ 158 | void* cmd_ptr_str_loc = memmem(iboot_in->buf, iboot_in->len, cmd_bytes, cmd_bytes_len); 159 | 160 | free(cmd_bytes); 161 | 162 | if(!cmd_ptr_str_loc) { 163 | printf("%s: Unable to find the cmd \"%s\".\n", __FUNCTION__, cmd_str); 164 | return 0; 165 | } 166 | /* +1 to bring the found offset to the beginning of the cmd string... \0\0 --> \0 */ 167 | cmd_ptr_str_loc++; 168 | 169 | printf("%s: Found the cmd string at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, cmd_ptr_str_loc)); 170 | 171 | /* Resolve the cmd table referencing the cmd string... */ 172 | struct iboot32_cmd_t* cmd = (struct iboot32_cmd_t*) iboot_memmem(iboot_in, cmd_ptr_str_loc); 173 | if(!cmd) { 174 | printf("%s: Unable to find a ref to \"%p\".\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, cmd_ptr_str_loc)); 175 | return 0; 176 | } 177 | 178 | printf("%s: Found the cmd string reference at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, (void*) cmd)); 179 | 180 | printf("%s: Pointing \"%s\" from 0x%08x to 0x%08x...\n", __FUNCTION__, cmd_str, cmd->cmd_ptr, ptr); 181 | 182 | /* Point cmd handler to user-specified pointer... */ 183 | cmd->cmd_ptr = ptr; 184 | 185 | printf("%s: Leaving...\n", __FUNCTION__); 186 | 187 | return 1; 188 | } 189 | 190 | int patch_debug_enabled(struct iboot_img* iboot_in) { 191 | printf("%s: Entering...\n", __FUNCTION__); 192 | 193 | /* Find the BL get_value_for_dtre_var insn... */ 194 | void* get_value_for_dtre_bl = find_dtre_get_value_bl_insn(iboot_in, DEBUG_ENABLED_DTRE_VAR_STR); 195 | if(!get_value_for_dtre_bl) { 196 | printf("%s: Unable to find appropriate BL insn.\n", __FUNCTION__); 197 | return 0; 198 | } 199 | 200 | printf("%s: Patching BL insn at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, get_value_for_dtre_bl)); 201 | 202 | /* BL get_dtre_value --> MOVS R0, #1; MOVS R0, #1 */ 203 | *(uint32_t*)get_value_for_dtre_bl = bswap32(0x01200120); 204 | 205 | printf("%s: Leaving...\n", __FUNCTION__); 206 | return 1; 207 | } 208 | 209 | int patch_rsa_check(struct iboot_img* iboot_in) { 210 | printf("%s: Entering...\n", __FUNCTION__); 211 | 212 | int os_vers = get_os_version(iboot_in); 213 | if(os_vers <= 4) { 214 | 215 | void* rsa_check_4 = find_rsa_check_4(iboot_in); 216 | if(!find_rsa_check_4) { 217 | printf("%s: Unable to find BL ECID!\n", __FUNCTION__); 218 | return 0; 219 | } 220 | /* BL --> MOVS R0, #0; MOVS R0, #0 */ 221 | printf("%s: Patching RSA at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, rsa_check_4)); 222 | *(uint32_t*)rsa_check_4 = bswap32(0x00200020); 223 | 224 | void* ldr_ecid = find_ldr_ecid(iboot_in); 225 | if(!ldr_ecid) { 226 | printf("%s: Unable to find RSA check!\n", __FUNCTION__); 227 | return 0; 228 | } 229 | /* BL --> MOVS R0, #0; MOVS R0, #0 */ 230 | printf("%s: Patching BL ECID at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_ecid)); 231 | *(uint32_t*)ldr_ecid = bswap32(0x00200020); 232 | 233 | void* ldr_bord = find_ldr_bord(iboot_in); 234 | if(!ldr_bord) { 235 | printf("%s: Unable to find BL BORD!\n", __FUNCTION__); 236 | return 0; 237 | } 238 | /* BL --> MOVS R0, #0; MOVS R0, #0 */ 239 | printf("%s: Patching BL BORD at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_bord)); 240 | *(uint32_t*)ldr_bord = bswap32(0x00200020); 241 | 242 | void* ldr_prod = find_ldr_prod(iboot_in); 243 | if(!ldr_prod) { 244 | printf("%s: Unable to find BL PROD!\n", __FUNCTION__); 245 | return 0; 246 | } 247 | /* BL --> MOVS R0, #0; MOVS R0, #0 */ 248 | printf("%s: Patching BL PROD at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_prod)); 249 | *(uint32_t*)ldr_prod = bswap32(0x00200020); 250 | 251 | void* ldr_sepo = find_ldr_sepo(iboot_in); 252 | if(!ldr_sepo) { 253 | printf("%s: Unable to find BL SEPO!\n", __FUNCTION__); 254 | return 0; 255 | } 256 | /* BL --> MOVS R0, #0; MOVS R0, #0 */ 257 | printf("%s: Patching BL SEPO at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_sepo)); 258 | *(uint32_t*)ldr_sepo = bswap32(0x00200020); 259 | 260 | return 1; 261 | } 262 | 263 | void* bl_verify_shsh = find_bl_verify_shsh(iboot_in); 264 | if(!bl_verify_shsh) { 265 | printf("%s: Unable to find BL verify_shsh!\n", __FUNCTION__); 266 | return 0; 267 | } 268 | printf("%s: Patching BL verify_shsh at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, bl_verify_shsh)); 269 | 270 | /* BL verify_shsh --> MOVS R0, #0; STR R0, [R3] */ 271 | *(uint32_t*)bl_verify_shsh = bswap32(0x00201860); 272 | 273 | printf("%s: Leaving...\n", __FUNCTION__); 274 | return 1; 275 | } 276 | 277 | int patch_ignore_nvram(struct iboot_img* iboot_in) { 278 | printf("%s: Entering...\n", __FUNCTION__); 279 | 280 | /* Find the BL boot-partition/ramdisk instruction... */ 281 | void* boot_partition_ldr = find_boot_partition_ldr(iboot_in); 282 | 283 | if(!boot_partition_ldr) { 284 | printf("%s: Unable to find boot_partition_ldr!\n", __FUNCTION__); 285 | return 0; 286 | } 287 | 288 | char *bl_boot_partition = bl_search_down(boot_partition_ldr,0x100); 289 | if(!bl_boot_partition) { 290 | printf("%s: Unable to find the boot-partition BL! (Image may already be patched?)\n", __FUNCTION__); 291 | return 0; 292 | } 293 | 294 | printf("%s: Patching boot_partition BL at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, bl_boot_partition)); 295 | 296 | /* BL boot-partition/ramdisk --> MOVS R0, #0; MOVS R0, #0 */ 297 | *(uint32_t*)bl_boot_partition = bswap32(0x00200020); 298 | 299 | void* boot_ramdisk_ldr = find_boot_ramdisk_ldr(iboot_in); 300 | 301 | if(!boot_ramdisk_ldr) { 302 | printf("%s: Unable to find boot_ramdisk_ldr!\n", __FUNCTION__); 303 | return 0; 304 | } 305 | 306 | char *bl_boot_ramdisk = bl_search_down(boot_ramdisk_ldr,0x100); 307 | if(!bl_boot_ramdisk) { 308 | printf("%s: Unable to find the boot-ramdisk BL! (Image may already be patched?)\n", __FUNCTION__); 309 | return 0; 310 | } 311 | 312 | printf("%s: Patching boot_ramdisk BL at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, bl_boot_ramdisk)); 313 | 314 | /* BL boot-partition/ramdisk --> MOVS R0, #0; MOVS R0, #0 */ 315 | *(uint32_t*)bl_boot_ramdisk = bswap32(0x00200020); 316 | 317 | printf("%s: Leaving...\n", __FUNCTION__); 318 | return 1; 319 | } 320 | 321 | int patch_remote_boot(struct iboot_img* iboot_in) { 322 | printf("%s: Entering...\n", __FUNCTION__); 323 | /* Find the variable string... */ 324 | char* var_str_loc = memstr(iboot_in->buf, iboot_in->len, "debug-uarts"); 325 | if(!var_str_loc) { 326 | printf("%s: Unable to find %s string!\n", __FUNCTION__, "debug-uarts"); 327 | return 0; 328 | } 329 | printf("%s: %s string is at %p\n", __FUNCTION__, "debug-uarts", (void*) GET_IBOOT_FILE_OFFSET(iboot_in, var_str_loc)); 330 | 331 | /* Find the variable string xref... */ 332 | uint32_t* var_xref = iboot_memmem(iboot_in, var_str_loc); 333 | if(!var_xref) { 334 | printf("%s: Unable to find %s string xref!\n", __FUNCTION__, "debug-uarts"); 335 | return 0; 336 | } 337 | 338 | void* var_ldr = ldr_to(var_xref); 339 | if(!var_ldr) { 340 | printf("%s: Unable to find %s string LDR from xref!\n", __FUNCTION__, "debug-uarts"); 341 | return 0; 342 | } 343 | 344 | void* firstBL = bl_search_down(var_ldr+4, 0x10); 345 | if(!firstBL) { 346 | printf("%s: Unable to find firstBL!\n", __FUNCTION__, "debug-uarts"); 347 | return 0; 348 | } 349 | void* secondBL = bl_search_down(firstBL+4, 0x10); 350 | if(!secondBL) { 351 | printf("%s: Unable to find secondBL!\n", __FUNCTION__, "debug-uarts"); 352 | return 0; 353 | } 354 | void* thefunc = bl_search_down(secondBL+4, 0x10); 355 | if(!thefunc) { 356 | printf("%s: Unable to find thefunc!\n", __FUNCTION__, "debug-uarts"); 357 | return 0; 358 | } 359 | 360 | void *afterBL = bl_search_down(thefunc+4, 0x10); 361 | if(!afterBL) { 362 | printf("%s: Unable to find afterBL!\n", __FUNCTION__, "debug-uarts"); 363 | return 0; 364 | } 365 | 366 | if (afterBL-4 == thefunc) { 367 | printf("%s: afterbl is too close!\n", __FUNCTION__, "debug-uarts"); 368 | return 0; 369 | } 370 | 371 | uint32_t *dst = resolve_bl32(thefunc); 372 | if(!afterBL) { 373 | printf("%s: Unable to find dst!\n", __FUNCTION__, "debug-uarts"); 374 | return 0; 375 | } 376 | 377 | dst = (uint32_t*)((uint8_t*)dst-1); 378 | printf("%s: dst is at %p\n", __FUNCTION__, (void*) GET_IBOOT_FILE_OFFSET(iboot_in, (void*)dst)); 379 | *dst = 0x47702001; 380 | 381 | return 1; 382 | } 383 | 384 | 385 | int patch_ticket_check(struct iboot_img* iboot_in) { 386 | #define pointer(p) (__pointer[0] = (uint32_t)p & 0xff, __pointer[1] = ((uint32_t)p/0x100) & 0xff, __pointer[2] = ((uint32_t)p/0x10000) & 0xff, __pointer[3] = ((uint32_t)p/0x1000000) & 0xff, _pointer) 387 | char __pointer[4]; 388 | char *_pointer = __pointer; 389 | printf("%s: Entering...\n", __FUNCTION__); 390 | char *bl_stack_fail = NULL; 391 | char *NOPstart = NULL; 392 | char *NOPstop = NULL; 393 | 394 | /* find iBoot_vers_str */ 395 | const char* iboot_vers_str = memstr(iboot_in->buf, iboot_in->len, "iBoot-"); 396 | if (!iboot_vers_str) { 397 | printf("%s: Unable to find iboot_vers_str!\n", __FUNCTION__); 398 | return 0; 399 | } 400 | printf("%s: Found iBoot baseaddr %p\n", __FUNCTION__, get_iboot_base_address(iboot_in->buf)); 401 | printf("%s: Found iboot_vers_str at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, iboot_vers_str)); 402 | 403 | 404 | /* find pointer to vers_str (should be a few bytes below string) */ 405 | uint32_t vers_str_iboot = (uint32_t)GET_IBOOT_ADDR(iboot_in,iboot_vers_str); 406 | char *str_pointer = MEMMEM_RELATIVE(iboot_in, iboot_vers_str, pointer(vers_str_iboot), 4); 407 | if (!str_pointer) { 408 | printf("%s: Unable to find str_pointer!\n", __FUNCTION__); 409 | return 0; 410 | } 411 | 412 | printf("%s: Found str_pointer at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, str_pointer)); 413 | 414 | 415 | /* find 3rd xref */ 416 | uint32_t *str_pointer_iboot = (uint32_t)GET_IBOOT_ADDR(iboot_in,str_pointer); 417 | char *iboot_str_3_xref = iboot_in->buf; 418 | for (int i=0; i<3; i++) { 419 | if (!(iboot_str_3_xref = MEMMEM_RELATIVE(iboot_in, iboot_str_3_xref+1, pointer(str_pointer_iboot), 4))){ 420 | printf("%s: Unable to find %d iboot_str_3_xref!\n", __FUNCTION__,i+1); 421 | return 0; 422 | } 423 | } 424 | 425 | printf("%s: Found iboot_str_3_xref at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, iboot_str_3_xref)); 426 | 427 | /* find ldr rx = iboot_str_3_xref */ 428 | char *ldr_intruction = ldr_pcrel_search_up(iboot_str_3_xref, 0x100); 429 | if (!ldr_intruction) { 430 | printf("%s: Unable to find ldr_intruction!\n", __FUNCTION__); 431 | return 0; 432 | } 433 | 434 | printf("%s: Found ldr_intruction at %p\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, ldr_intruction)); 435 | 436 | char *last_good_bl = bl_search_down(ldr_intruction,0x100); 437 | if (!last_good_bl) { 438 | printf("%s: Unable to find last_good_bl!\n", __FUNCTION__); 439 | return 0; 440 | } 441 | printf("%s: Found last_good_bl at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, last_good_bl)); 442 | last_good_bl +=4; 443 | 444 | char *next_pop = pop_search(last_good_bl,0x100,0); 445 | if (!next_pop) { 446 | printf("%s: Unable to find next_pop!\n", __FUNCTION__); 447 | return 0; 448 | } 449 | printf("%s: Found next_pop at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, next_pop)); 450 | printf("%s: Found next_pop at %p...\n", __FUNCTION__, GET_IBOOT_ADDR(iboot_in, next_pop)); 451 | 452 | char *last_branch = branch_search(next_pop,0x20,1); 453 | char *prev_mov_r0_fail = pattern_search(next_pop, 0x20, bswap32(0x4ff0ff30), bswap32(0x4ff0ff30), -2); 454 | 455 | if (prev_mov_r0_fail && prev_mov_r0_fail > last_branch) { 456 | printf("%s: Detected prev_mov_r0_fail at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, prev_mov_r0_fail)); 457 | last_branch = prev_mov_r0_fail-2; //last branch is a BL 458 | } 459 | 460 | if (!last_branch) { 461 | printf("%s: Unable to find last_branch!\n", __FUNCTION__); 462 | return 0; 463 | } 464 | printf("%s: Found last_branch at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, last_branch)); 465 | 466 | 467 | printf("%s: Patching in mov.w r0, #0 at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, last_good_bl)); 468 | *(uint32_t*)last_good_bl = bswap32(0x4ff00000); 469 | last_good_bl +=4; 470 | 471 | printf("%s: Patching in mov.w r1, #0 at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, last_good_bl)); 472 | *(uint32_t*)last_good_bl = bswap32(0x4ff00001); 473 | last_good_bl +=4; 474 | 475 | NOPstart = last_good_bl; 476 | NOPstop = last_branch+2; 477 | 478 | //because fuck clean patches 479 | printf("%s: NOPing useless stuff at %p to %p ...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in, NOPstart), GET_IBOOT_FILE_OFFSET(iboot_in, NOPstop)); 480 | 481 | while (NOPstart mov.w r0, #0x0 */ 491 | *(uint32_t*)NOPstop = bswap32(0x4ff00000); 492 | } 493 | 494 | 495 | printf("%s: Leaving...\n", __FUNCTION__); 496 | return 1; 497 | } 498 | 499 | int patch_bgcolor(struct iboot_img* iboot_in, const char* bgcolor) { 500 | 501 | printf("%s: Entering...\n", __FUNCTION__); 502 | 503 | if (strlen(bgcolor) != 6) { 504 | printf("%s: Unable to decode passed color!\n", __FUNCTION__); 505 | return 0; 506 | } 507 | 508 | uint8_t red, green, blue; 509 | 510 | char *tmp = malloc(3); 511 | memset(tmp, 0, 3); 512 | 513 | strncpy(tmp, bgcolor, 2); 514 | red = strtol(tmp, NULL, 16); 515 | 516 | strncpy(tmp, bgcolor+2, 2); 517 | green = strtol(tmp, NULL, 16); 518 | 519 | strncpy(tmp, bgcolor+4, 2); 520 | blue = strtol(tmp, NULL, 16); 521 | 522 | printf("%s: red=%d green=%d blue=%d\n", __FUNCTION__, red, green, blue); 523 | 524 | 525 | uint8_t MOV_r1_logo[] = {0x46, 0xF2, 0x6F, 0x70, 0xC6, 0xF6, 0x6F, 0x40}; 526 | 527 | uint8_t *MOV_r1_logo_ptr = memmem(iboot_in->buf, iboot_in->len, &MOV_r1_logo, sizeof(MOV_r1_logo)); 528 | if (!MOV_r1_logo_ptr) { 529 | printf("%s: Unable to find MOV R1, #'logo'\n", __FUNCTION__); 530 | return 0; 531 | } else { 532 | printf("%s: Found MOV R1, #'logo' at %p\n", __FUNCTION__, (void*)MOV_r1_logo_ptr-(iboot_in->buf)); 533 | } 534 | 535 | 536 | uint8_t setbgcolor_args[] = {0x00, 0x20, 0x00, 0x21, 0x00, 0x22}; 537 | 538 | uint8_t *setbgcolor_args_ptr = memmem(MOV_r1_logo_ptr-0x80, 0x80, &setbgcolor_args, sizeof(setbgcolor_args)); 539 | if (!setbgcolor_args_ptr) { 540 | printf("%s: Unable to find setbgcolor() args\n", __FUNCTION__); 541 | return 0; 542 | } else { 543 | printf("%s: Found setbgcolor() args at %p\n", __FUNCTION__, (void*)setbgcolor_args_ptr-(iboot_in->buf)); 544 | } 545 | 546 | setbgcolor_args[0] = red; 547 | setbgcolor_args[2] = green; 548 | setbgcolor_args[4] = blue; 549 | 550 | memmove(setbgcolor_args_ptr, &setbgcolor_args, sizeof(setbgcolor_args)); 551 | printf("%s: Overwriting setbgcolor() args\n", __FUNCTION__); 552 | 553 | printf("%s: Leaving...\n", __FUNCTION__); 554 | return 1; 555 | } 556 | 557 | int patch_dual_boot(struct iboot_img* iboot_in) { 558 | printf("%s: Entering...\n", __FUNCTION__); 559 | 560 | /* Boot-command = upgrade; iBEC will load bootchain from filesystem */ 561 | 562 | void* fsboot_str_xref = find_fsboot_str_xref(iboot_in); 563 | void* upgrade_str_loc = find_upgrade_str_loc(iboot_in); 564 | 565 | printf("%s: Pointing fsboot xref to %p...\n", __FUNCTION__, upgrade_str_loc); 566 | *(uint32_t* )fsboot_str_xref = upgrade_str_loc; 567 | 568 | int os_vers = get_os_version(iboot_in); 569 | 570 | if(os_vers <= 7) { 571 | 572 | /* auto-boot = true ; only needed on iOS 4-5-6-7 iBECs */ 573 | 574 | void* false_str_xref = find_false_str_xref(iboot_in); 575 | void* true_str_loc = find_true_str_loc(iboot_in); 576 | 577 | printf("%s: Pointing false xref to %p...\n", __FUNCTION__, true_str_loc); 578 | *(uint32_t* )false_str_xref = true_str_loc; 579 | } 580 | 581 | if(os_vers==4) { 582 | /* boot-partition = 1 ; not sure why but if it's set to 2 iBEC will try to load bootchain from fourth partition (probably GPT releated) */ 583 | 584 | void* two_loc = memstr(iboot_in->buf, iboot_in->len, "\x32\x00\x00\x00\x66\x61\x69\x6C"); 585 | printf("%s: Found 2 at %p...\n", __FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,two_loc)); 586 | *(uint32_t*)two_loc = bswap32(0x31000000); 587 | 588 | } 589 | 590 | if(os_vers >= 8) { 591 | /* Mount_upgrade_partition patch ; needed on iOS 8+ iBECs */ 592 | 593 | if(os_vers==8) { 594 | void* mount_partition_bl = find_mount_upgrade_bl_8(iboot_in); 595 | void* iBoot_str_loc = memstr(iboot_in->buf, iboot_in->len, "iBEC"); 596 | iBoot_str_loc-=0x50; 597 | printf("%s: Adding nand0c string at %p\n",__FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,iBoot_str_loc)); 598 | strcpy(iBoot_str_loc,"nand0c"); 599 | } 600 | 601 | if(os_vers==9) { 602 | void* mount_partition_bl = find_mount_upgrade_bl_9(iboot_in); 603 | void* iBoot_str_loc = memstr(iboot_in->buf, iboot_in->len, "iBEC"); 604 | iBoot_str_loc-=0x50; 605 | printf("%s: Adding nand0c string at %p\n",__FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,iBoot_str_loc)); 606 | strcpy(iBoot_str_loc,"nand0c"); 607 | } 608 | 609 | if(os_vers==10) { 610 | void* mount_partition_bl = find_mount_upgrade_bl_10(iboot_in); 611 | void* iBoot_str_loc = memstr(iboot_in->buf, iboot_in->len, "iBootStage2"); 612 | iBoot_str_loc-=0x50; 613 | printf("%s: Adding nand0c string at %p",__FUNCTION__, GET_IBOOT_FILE_OFFSET(iboot_in,iBoot_str_loc)); 614 | strcpy(iBoot_str_loc,"nand0c"); 615 | } 616 | 617 | } 618 | 619 | printf("%s: Leaving...\n", __FUNCTION__); 620 | return 1; 621 | } 622 | 623 | int patch_iloader(struct iboot_img* iboot_in) { 624 | printf("%s: Entering...\n", __FUNCTION__); 625 | 626 | find_iloader_offsets(iboot_in); 627 | 628 | printf("%s: Leaving...\n", __FUNCTION__); 629 | 630 | return 1; 631 | } 632 | --------------------------------------------------------------------------------