├── Makefile
├── README
├── iBoot64Patcher.c
└── LICENSE


/Makefile:
--------------------------------------------------------------------------------
 1 | .PHONY: all install clean
 2 | 
 3 | CC          = gcc
 4 | TARGET      = iBoot64Patcher
 5 | INSTALL     = /usr/local/bin
 6 | 
 7 | CFLAGS      += -DDEBUG -I. -g3 -O3
 8 | CFLAGS      += -Wall -Wextra -Wno-format
 9 | 
10 | SRC         := $(shell find . -name "*.c")
11 | OBJECTS     := $(SRC:%.c=%.o)
12 | 
13 | default: all
14 | 
15 | all: $(TARGET)
16 | 
17 | %.o: %.c
18 | 	@echo "CC	$<"
19 | 	@$(CC) $< -c $(CFLAGS) -o $@
20 | 
21 | $(TARGET): $(OBJECTS)
22 | 	@echo "LD	$(TARGET)"
23 | 	@$(CC) $(OBJECTS) -o $(TARGET)
24 | 	@echo "[OK]: built $(TARGET) for $(shell uname -s)"
25 | 
26 | install: $(TARGET)
27 | 	@install -v $(TARGET) $(INSTALL)
28 | 	@echo "OK: installed $(TARGET)."
29 | 
30 | clean:
31 | 	@rm -f *.o $(TARGET)
32 | 	@echo "OK: cleaned some files"
33 | 


--------------------------------------------------------------------------------
/README:
--------------------------------------------------------------------------------
 1 | iBoot64Patcher
 2 | 
 3 | > Patch the iBoot64 (+ SecureROM | AVPBooter) with generic patches.
 4 | 
 5 | I. Requierements
 6 | 	1. macOS/Linux/Windows,
 7 | 	2. basic compilation tools,
 8 | 	3. decrypted 64bit iBoot.
 9 | 
10 | II. Usage
11 | usage: iBoot64Patcher <in> <out> [-e] [-b <boot-args>]
12 | 	default	apply the generics patches,
13 | 	-e	apply the extra patches,
14 | 	-b	apply custom boot-args.
15 | 
16 | 	$ iBoot64Patcher iBoot.RELEASE.bin iBoot.RELEASE.pwn -e -b "serial=3"
17 | 
18 | III. Available patches
19 | 	> Allow kernel debug,
20 | 	> Remove signature check,
21 | 	> Prevent KASLR randomization,
22 | 	> Setting up custom Boot-args,
23 | 	> Allow to load any image type.
24 | 
25 | IV. Notes
26 | 	> use the ARM docs for building more instructions,
27 | 	> kairos is a way better (mine can be used for tests purposes),
28 | 	> iBoot64Patcher supports any iBoots (PACed or not) from iOS 7 to iOS 15,
29 | 	> I used some technics of @dayt0n kairos project and @xerub xref64 function as well,
30 | 	> This 'project' was only made because of my dumb curiosity (if I could patch the iBoot64 using iBoot64Finder code).
31 | 


--------------------------------------------------------------------------------
/iBoot64Patcher.c:
--------------------------------------------------------------------------------
  1 | #define _GNU_SOURCE
  2 | 
  3 | #include <stdio.h>
  4 | #include <stdint.h>
  5 | #include <stdlib.h>
  6 | #include <string.h>
  7 | #include <stdbool.h>
  8 | 
  9 | int extra = 0;
 10 | int version = 0;
 11 | int boot_arg = 0;
 12 | uint64_t base = 0;
 13 | bool paced = false;
 14 | 
 15 | #define bswap32(x) __builtin_bswap32(x)
 16 | #define hex_set(vers, hex1, hex2) ((vers > version) ? hex1 : hex2)
 17 | #define pac_set(vers, hex1, hex2) (((version == vers) && paced) ? hex1 : hex2)
 18 | 
 19 | /*************** patchfinder64 ***************/
 20 | 
 21 | uint64_t bof64(uint8_t *buf, uint64_t start, uint64_t where)
 22 | {
 23 |     for (; where >= start; where -= 0x4) {
 24 |         uint32_t op = *(uint32_t *)(buf + where);
 25 | 
 26 |         if ((op & 0xffc003ff) == 0x910003fd) {
 27 |             unsigned delta = (op >> 10) & 0xFFF;
 28 |     
 29 |             if ((delta & 0xf) == 0) {
 30 |                 uint64_t prev = where - ((delta >> 0x4) + 1) * 0x4;
 31 | 
 32 |                 uint32_t au = *(uint32_t *)(buf + prev);
 33 | 
 34 |                 if ((au & 0xffc003e0) == 0xa98003e0) return prev;
 35 | 
 36 |                 while (where > start) {
 37 |                     where -= 0x4;
 38 | 
 39 |                     au = *(uint32_t *)(buf + where);
 40 | 
 41 |                     if (((au & 0xffc003ff) == 0xd10003ff) && (((au >> 0xA) & 0xfff) == delta + 0x10)) return where;
 42 | 
 43 |                     if ((au & 0xffc003e0) != 0xa90003e0) {
 44 |                         where += 0x4;
 45 |                         break;
 46 |                     }
 47 |                 }
 48 |             }
 49 |         }
 50 |     }
 51 | 
 52 |     return 0;
 53 | }
 54 | 
 55 | uint64_t xref64(const uint8_t *ibot, uint64_t start, uint64_t end, uint64_t what)
 56 | {
 57 |     uint64_t i;
 58 |     uint64_t value[32];
 59 | 
 60 |     memset(value, 0x0, sizeof(value));
 61 | 
 62 |     end &= ~0x3;
 63 | 
 64 |     for (i = start & ~0x3; i < end; i += 0x4) {
 65 |         uint32_t op = *(uint32_t *)(ibot + i);
 66 |         unsigned reg = op & 0x1f;
 67 | 
 68 |         if ((op & 0x9f000000) == 0x90000000) {
 69 |             signed adr = ((op & 0x60000000) >> 0x12) | ((op & 0xffffe0) << 8);
 70 | 
 71 |             value[reg] = ((long long)adr << 1) + (i & ~0xfff);
 72 |         } else if ((op & 0xff000000) == 0x91000000) {
 73 |             unsigned rn = (op >> 0x5) & 0x1f;
 74 | 
 75 |             if (rn == 0x1f) {
 76 |                 value[reg] = 0;
 77 |                 continue;
 78 |             }
 79 | 
 80 |             unsigned shift = (op >> 0x16) & 0x3;
 81 |             unsigned imm = (op >> 0xA) & 0xfff;
 82 | 
 83 |             if (shift == 1) {
 84 |                 imm <<= 0xC;
 85 |             } else {
 86 |                 if (shift > 1) continue;
 87 |             }
 88 | 
 89 |             value[reg] = value[rn] + imm;
 90 |         } else if ((op & 0xf9C00000) == 0xf9400000) {
 91 |             unsigned rn = (op >> 0x5) & 0x1f;
 92 |             unsigned imm = ((op >> 0xA) & 0xfff) << 0x3;
 93 | 
 94 |             if (!imm) continue;
 95 | 
 96 |             value[reg] = value[rn] + imm;
 97 |         } else if ((op & 0x9f000000) == 0x10000000) {
 98 |             signed adr = ((op & 0x60000000) >> 0x12) | ((op & 0xffffe0) << 8);
 99 | 
100 |             value[reg] = ((long long)adr >> 0xB) + i;
101 |         } else if ((op & 0xff000000) == 0x58000000) {
102 |             unsigned adr = (op & 0xffffe0) >> 3;
103 | 
104 |             value[reg] = adr + i;
105 |         } else if ((op & 0xfc000000) == 0x94000000) {
106 |             signed imm = (op & 0x3ffffff) << 2;
107 | 
108 |             if (op & 0x2000000) imm |= 0xf << 0x1c;
109 | 
110 |             unsigned adr = (unsigned)(i + imm);
111 | 
112 |             if (adr == what) return i;
113 |         }
114 | 
115 |         if (value[reg] == what && reg != 0x1f) return i;
116 |     }
117 | 
118 |     return 0;
119 | }
120 | 
121 | /*************** eydis ***************/
122 | 
123 | uint64_t insn_is_bl(void *ibot, uint64_t xref, int bl_to_count, int add)
124 | {
125 |     for (int i = 0; i < bl_to_count; i++) {
126 |         xref += add;
127 | 
128 |         for (; (*(uint32_t *)(ibot + xref) >> 0x1a) != 0x25; xref += add);
129 |     }
130 | 
131 |     return xref;
132 | }
133 | 
134 | uint64_t find_any_insn(void *ibot, uint64_t xref, int x, int add, uint32_t mask, uint32_t value)
135 | {
136 |     for (int i = 0; i < x; i++) {
137 |         xref += add;
138 | 
139 |         for (; (*(uint32_t *)(ibot + xref) & mask) != value; xref += add);
140 |     }
141 | 
142 |     return xref;
143 | }
144 | 
145 | /*************** iBoot64Finder ***************/
146 | 
147 | #define insn_set(x, v1, v2, v3, v4, v5) \
148 |     if (version == 1940)       x = v1;  \
149 |     else if (version == 2261)  x = v2;  \
150 |     else if (version == 2817)  x = v3;  \
151 |     else if (version == 3406)  x = v4;  \
152 |     else                       x = v5;
153 | 
154 | void *memdata(void *ibot, uint64_t data, int data_size, void *last_ptr, size_t length)
155 | {
156 |     int loc = length - (ibot - last_ptr);
157 | 
158 |     void *ptr = (void *)memmem(last_ptr + 0x4, loc - 0x4, (const char *)&data, data_size);
159 | 
160 |     if (ptr) return ptr;
161 | 
162 |     return NULL;
163 | }
164 | 
165 | bool detect_pac(void *ibot, size_t length)
166 | {
167 |     void *pac_search = memdata(ibot, bswap32(0x7f2303d5), 0x4, ibot, length);
168 | 
169 |     if (pac_search) return (paced = true);
170 | 
171 |     return (paced = false);
172 | }
173 | 
174 | /*************** patchs ***************/
175 | 
176 | uint64_t rmv_signature_check(void *ibot, size_t length)
177 | {
178 |     uint32_t insn = 0;
179 |     void *search = NULL;
180 |     uint32_t opcode = 0;
181 |     uint32_t ret = (paced ? 0xff0f5fd6 : 0xc0035fd6); // RETAB : RET (TODO: build them)
182 | 
183 |     printf("\n[%s]: removing signatures checks...\n", __func__);
184 | 
185 |     /*
186 |      * 1. strb w8, [x20, #7] | 2. ldrb w11, [x9, #0x2a]
187 |      * 3. movk w1, #0x4950   | 4. csinv w0, w20, wzr, ne
188 |      * 5. movk w0, #0x4353, lsl #16
189 |      */
190 | 
191 |     insn_set(insn, 0x881e0039, 0x2ba94039, 0x012a8972, 0x80129f5a, 0x606aa872);
192 | 
193 |     if ((search = memdata(ibot, bswap32(insn), 0x4, ibot, length)) == NULL) return -1;
194 | 
195 |     insn = (uint64_t)((uintptr_t)search - (uintptr_t)ibot); // setting up the actual address
196 | 
197 |     insn = bof64(ibot, 0x0, find_any_insn(ibot, insn, 1, 0x4, 0xfe1f0000, 0xd61f0000));
198 | 
199 |     printf("[%s]: found '_image4_validate_property_cb_interposer' beginning!\n", __func__);
200 | 
201 |     opcode = (0x6 << 29) | (0x25 << 23) | 0x0; // movz x0, #0
202 | 
203 |     *(uint32_t *)(ibot + insn) = bswap32(opcode);
204 | 
205 |     printf("[%s]: patched to MOVZ x0, #0 insn = 0x%llx\n", __func__, insn + base);
206 | 
207 |     *(uint32_t *)(ibot + insn + 0x4) = bswap32(ret);
208 | 
209 |     printf("[%s]: patched to %s insn = 0x%llx\n"
210 |             "[%s]: successfully removed signatures checks!\n",
211 |             __func__, (paced ? "RETAB" : "RET"), (insn + 0x4) + base,
212 |             __func__);
213 | 
214 |     return 0;
215 | }
216 | 
217 | uint64_t enable_kernel_debug(void *ibot, size_t length)
218 | {
219 |     void *bl = NULL;
220 |     uint64_t xref = 0;
221 |     uint32_t opcode = 0;
222 | 
223 |     printf("\n[%s]: enabling kernel debugging...\n", __func__);
224 | 
225 |     if ((bl = memmem(ibot, length, "debug-enabled", strlen("debug-enabled"))) == NULL) return -1;
226 | 
227 |     if ((xref = xref64(ibot, 0x0, length, bl - ibot)) == 0) return -1;
228 | 
229 |     xref = insn_is_bl(ibot, xref, pac_set(6723, 0x5, 0x2), 0x4);
230 | 
231 |     printf("[%s]: found the BL to '_security_allow_modes' function\n", __func__);
232 | 
233 |     opcode = (0x6 << 29) | (0x25 << 23) | (0x0 << 0x5) | 0x2; // movz x0, #1
234 | 
235 |     *(uint32_t *)(ibot + xref) = bswap32(opcode); // movz x0, #1
236 | 
237 |     printf("[%s]: patched to MOVZ x0, #1 insn = 0x%llx\n", __func__, xref + base);
238 | 
239 |     printf("[%s]: successfully enabled kernel debugging!\n", __func__);
240 | 
241 |     return 0;
242 | }
243 | 
244 | uint64_t allow_any_imagetype(void *ibot, size_t length)
245 | {
246 |     uint64_t xref = 0;
247 |     void *where = NULL;
248 |     uint32_t search = 0, opcode = 0;
249 |     int rd = hex_set(3406, 0x5, 0x4); // rd for the first patch
250 |     char *str = ((version > 3406) ? "cebilefciladrmmhtreptlhptmbr" : "cebilefctmbrtlhptreprmmh");
251 | 
252 |     printf("\n[%s]: allowing to load any type of images...\n", __func__);
253 | 
254 |     if ((where = memmem(ibot, length, str, strlen(str))) == NULL) return -1;
255 | 
256 |     if ((xref = xref64(ibot, 0x0, length, where - ibot)) == 0) return -1;
257 | 
258 |     opcode = (0x6 << 29) | (0x25 << 23) | rd; // movz x4, #0 | movz x5, #0
259 | 
260 |     *(uint32_t *)(ibot + xref) = bswap32(opcode); // patch the 'type' variable
261 | 
262 |     printf("[%s]: patched to MOVZ x%d, #0 insn = 0x%llx\n", __func__, rd, base + xref);
263 | 
264 |     search = hex_set(5540, hex_set(3406, 0xe5071f32, 0xe60b0032), 0xe6008052);
265 | 
266 |     where = memdata(ibot, bswap32(search), 0x4, ibot, length);
267 | 
268 |     rd = hex_set(3406, 0x6, 0x5); // rd for the second patch
269 | 
270 |     opcode = (0x2 << 29) | (0x25 << 23) | rd; // movz w5, #0 | movz w6, #0
271 | 
272 |     *(uint32_t *)(where) = bswap32(opcode); // patch the 'count' variable
273 | 
274 |     printf("[%s]: patched to MOVZ w%d, #0 insn = 0x%llx\n", __func__, rd, base + (uint64_t)((uintptr_t)where - (uintptr_t)ibot));
275 | 
276 |     printf("[%s]: successfully allowed to load any image types!\n", __func__);
277 | 
278 |     return 0;
279 | }
280 | 
281 | // this patch will prevent kaslr to have a random slide.
282 | // (it seems that few devices other than the iPhone5S are supporting it)
283 | uint64_t prevent_kaslr_slide(void *ibot, size_t length)
284 | {
285 |     uint32_t where = 0;
286 |     uint32_t opcode = 0;
287 |     void *current = NULL;
288 |     unsigned _rd = 0, rd = 0;
289 | 
290 |     if ((version < 3406) || (version > 4513)) return 0;  // only for iOS 10 to iOS 12 for the moment
291 | 
292 |     printf("\n[%s]: patching the kaslr slide...\n", __func__);
293 | 
294 |     if ((current = memmem(ibot, length, "__PAGEZERO", sizeof("__PAGEZERO"))) == NULL) return -1;
295 | 
296 |     where = xref64(ibot, 0x0, length, current - ibot);
297 | 
298 |     printf("[%s]: found the 'load_kernelcache()' function!\n", __func__);
299 | 
300 |     if (version == 4513) {
301 |         where = find_any_insn(ibot, where, 2, -0x4, 0x3a000000, 0x28000000) + 0x14; // moving to the 'mov' insn
302 |     } else {
303 |         where = insn_is_bl(ibot, where, 0x3, -0x4);
304 |     }
305 | 
306 |     for (int i = 0x4; i != (version == 4513 ? 0x40 : 0x24); i += 0x4) {
307 |         if (i == 0x8) {
308 |             _rd = *(uint32_t *)(ibot + where + i) & 0x1f;
309 | 
310 |             // you can comment out these three lines to get a slide equal to 0x1000000
311 |             opcode = ((0x6 << 29) | (0x25 << 23) | (0x0 << 5) | _rd); // the register for the patched insn should be x21
312 | 
313 |             *(uint32_t *)(ibot + where + i) = opcode;
314 | 
315 |             printf("[%s]: patched 'slide_phys' to MOV x%u, #0 = 0x%llx\n", __func__, _rd, base + where + i);
316 |         } else if (i == (version == 4513 ? 0x28 : 0x18)) {
317 |             rd = *(uint32_t *)(ibot + where + i) & 0x1f;
318 | 
319 |             opcode = ((0x5 << 29) | (0x50 << 21) | ((_rd & 0x1f) << 16) | ((-1 & 0x1f) << 5) | rd); // kaslr_slide = 0x0
320 | 
321 |             *(uint32_t *)(ibot + where + i) = opcode;
322 | 
323 |             printf("[%s]: patched 'slide_virt' to MOV x%u, x%u = 0x%llx\n", __func__, rd, _rd, base + where + i);
324 |         } else {
325 |             *(uint32_t *)(ibot + where + i) = bswap32(0x1f2003d5);
326 |         }
327 |     }
328 | 
329 |     printf("[%s]: NOPed all other instructions.\n"
330 |             "[%s]: successfully patched the kaslr slide!\n"
331 |             , __func__, __func__);
332 | 
333 |     return 0;
334 | }
335 | 
336 | /*
337 |  * this one is clearly copied from kairos since i was sick of using it every time i needed to change the boot-args,
338 |  * i am not sure about the bootloaders older than iOS 10 but whatever...
339 |  * this has to be the worst visually written code in this project.
340 |  */
341 | uint64_t set_custom_bootargs(void *ibot, size_t length, char *bootargs)
342 | {
343 |     char *str = NULL;
344 |     unsigned _rd = 0;
345 |     uint64_t what = 0;
346 |     uint64_t where = 0;
347 |     uint32_t opcode = 0;
348 |     void *current = NULL;
349 |     char zeros[270] = {0};
350 | 
351 |     printf("\n[%s]: setting \"%s\" boot-args...\n", __func__, bootargs);
352 | 
353 |     if (version == 1940) str = "is-tethered";
354 | 
355 |     if (version >= 2261) str = "rd=md0 nand-enable-reformat=1 -progress";
356 | 
357 |     if (version >= 6723) str = "rd=md0";
358 | 
359 |     if ((current = memmem(ibot, length, str, strlen(str))) == NULL) {
360 |         current = memmem(ibot, length, "rd=md0 -progress -restore", strlen("rd=md0 -progress -restore"));
361 | 
362 |         if (current == NULL) return -1; // it was the last chance
363 |     }
364 | 
365 |     where = xref64(ibot, 0x0, length, current - ibot);
366 | 
367 |     if (version < 2261) {
368 |         where = find_any_insn(ibot, where, 3, -0x4, 0x1f000000, 0x10000000); // find adrp or adr insn
369 |     }
370 | 
371 |     printf("[%s]: found boot-args string = 0x%llx\n", __func__, base + where);
372 | 
373 |     void *new_bootarg_addr = memmem(ibot, length, zeros, 270);
374 | 
375 |     if (new_bootarg_addr == NULL) return -1;
376 | 
377 |     new_bootarg_addr += 0x10;
378 | 
379 |     memset(new_bootarg_addr, 0x0, 270);
380 | 
381 |     unsigned rd = *(uint32_t *)(ibot + where) & 0x1f;
382 | 
383 |     uint64_t diff = ((uint64_t)new_bootarg_addr - (uint64_t)ibot) - where;
384 | 
385 |     opcode = (diff % (1 << 2) << 29 | 0x10 << 24 | ((diff >> 2) % (1 << (20 - 2 + 1))) << 5 | rd % (1 << 5));
386 | 
387 |     *(uint32_t *)(ibot + where) = opcode; // adr <rd>, #imm
388 | 
389 |     strcpy(new_bootarg_addr, bootargs);
390 | 
391 |     printf("[%s]: patched the ADR instruction = 0x%llx\n", __func__, base + where);
392 | 
393 |     if (version < 6723) {
394 |         what = find_any_insn(ibot, where, 1, 0x4, 0x1fe00000, 0x1a800000); // find csel insn
395 | 
396 |         _rd = *(uint32_t *)(ibot + what) & 0x1f;
397 | 
398 |         opcode = ((0x5 << 29) | (0x50 << 21) | ((rd & 0x1f) << 16) | ((-1 & 0x1f) << 5) | _rd);
399 | 
400 |         *(uint32_t *)(ibot + what) = opcode; // mov <rd>, <rd_from_previous_insn>
401 | 
402 |         printf("[%s]: moved from CSEL instruction (0x%llx) to MOV x%u, x%u\n", __func__, base + what, _rd, rd);
403 |     }
404 | 
405 |     if (version >= 3406) {
406 |         what = find_any_insn(ibot, where, 1, -0x4, 0x7e000000, 0x34000000); // find cbz insn
407 | 
408 |         printf("[%s]: found the CBZ instruction = 0x%llx\n", __func__, base + what);
409 | 
410 |         int64_t offset = ((int64_t)((*(uint32_t *)(ibot + what) >> 5) & 0x7ffff) << 45) >> 43;
411 | 
412 |         diff = ((uint64_t)new_bootarg_addr - (uint64_t)ibot) - (what + offset); // pointed address
413 | 
414 |         _rd = *(uint32_t *)(ibot + what + offset) & 0x1f;
415 | 
416 |         opcode = (((diff >> 2) % (1 << (20 - 2 + 1))) << 5 | ((diff >> 0) % (1 << (1 - 0 + 1))) << 29 | 0x10 << 24 | _rd % (1 << 5));
417 | 
418 |         *(uint32_t *)(ibot + what + offset) = opcode; // adr <rd>, #imm
419 | 
420 |         printf("[%s]: replaced the ADR instruction pointing address = 0x%llx\n", __func__, base + what + offset);
421 |     }
422 | 
423 |     printf("[%s]: successfully set new bootargs!\n", __func__);
424 | 
425 |     return 0;
426 | }
427 | 
428 | /* main */
429 | 
430 | uint64_t apply_generic_patches(void *ibot, size_t length, char *bootargs)
431 | {
432 |     if (rmv_signature_check(ibot, length) != 0) {
433 |         printf("[%s]: unable to enable remove signature check.\n", __func__);
434 |         return -1;
435 |     }
436 | 
437 |     // Looking if the iBoot has a kernel load routine
438 |     if (memmem(ibot, length, "__PAGEZERO", strlen("__PAGEZERO"))) {
439 |         if (enable_kernel_debug(ibot, length) != 0) {
440 |             printf("[%s]: unable to enable kernel debugging.\n", __func__);
441 |             return -1;
442 |         }
443 | 
444 |         if (boot_arg) {
445 |             if (set_custom_bootargs(ibot, length, bootargs) != 0) {
446 |                 printf("[%s]: unable to patch the boot-args.\n", __func__);
447 |                 return -1;
448 |             }
449 |         }
450 | 
451 |         if (extra) {
452 |             if (allow_any_imagetype(ibot, length) != 0) {
453 |                 printf("[%s]: unable to allow to load any image types.\n", __func__);
454 |                 return -1;
455 |             }
456 | 
457 |             if (prevent_kaslr_slide(ibot, length) != 0) {
458 |                 printf("[%s]: unable to patch the kaslr slide.\n", __func__);
459 |                 return -1;
460 |             }
461 |         }
462 |     }
463 | 
464 |     return 0;
465 | }
466 | 
467 | void usage(char *owo[]) {
468 |     char *name = strrchr(owo[0], '/');
469 | 
470 |     printf("usage: %s <in> <out> [-e] [-b <boot-args>]\n", (name ? name + 1 : owo[0]));
471 |     printf("\tdefault\tapply the generics patches,\n");
472 |     printf("\t-e\tapply the extra patches,\n");
473 |     printf("\t-b\tapply custom boot-args.\n");
474 | 
475 |     exit(1);
476 | }
477 | 
478 | int main(int argc, char *argv[])
479 | {
480 |     FILE *fd = NULL;
481 |     void *ibot = NULL;
482 |     char *bootargs = NULL;
483 |     int arg_counter = argc - 1;
484 |     size_t length = 0, read = 0;
485 | 
486 |     if (argc < 3) usage(argv);
487 | 
488 |     while (arg_counter) {
489 |         if (*argv[arg_counter] == '-') {
490 |             char arg = *(argv[arg_counter] + 1);
491 | 
492 |             switch (arg) {
493 |             case 'e':
494 |                 extra = 1;
495 |                 break;
496 |             case 'b':
497 |                 boot_arg = 1;
498 |                 bootargs = argv[arg_counter + 1];
499 |                 break;
500 |             default:
501 |                 printf("warning: unrecognized argument: %s\n", argv[arg_counter]);
502 |                 usage(argv);
503 |             }
504 |         }
505 | 
506 |         arg_counter--;
507 |     }
508 | 
509 | 
510 |     printf("[%s]: starting...\n", __func__);
511 | 
512 |     if (!(fd = fopen(argv[1], "rb"))) {
513 |         printf("[%s]: unable to open %s.\n", __func__, argv[1]);
514 |         return -1;
515 |     }
516 | 
517 |     fseek(fd, 0x0, SEEK_END);
518 | 
519 |     length = ftell(fd);
520 | 
521 |     fseek(fd, 0x0, SEEK_SET);
522 | 
523 |     ibot = (void *)malloc(sizeof(char) * (length + 1));
524 | 
525 |     if ((read = fread(ibot, 1, length, fd) != length)) {
526 |         printf("[%s]: can't read %s.\n", __func__, argv[1]);
527 |         free(ibot);
528 |         return -1;
529 |     }
530 | 
531 |     fclose(fd);
532 | 
533 |     printf("[%s]: detected iBoot-%s!\n", __func__, (char *)(ibot + 0x286));
534 | 
535 |     version = atoi(ibot + 0x286);
536 | 
537 |     base = *(uint64_t *)(ibot + hex_set(6603, 0x318, 0x300));
538 | 
539 |     printf("[%s]: base_addr = 0x%llx\n", __func__, base);
540 | 
541 |     printf("[%s]: applying generic iBoot patches...\n", __func__);
542 | 
543 |     detect_pac(ibot, length); // setting up the 'paced' variable
544 | 
545 |     if (apply_generic_patches(ibot, length, bootargs) != 0) {
546 |         free(ibot);
547 |         return -1;
548 |     }
549 | 
550 |     if (!(fd = fopen(argv[2], "wb+"))) {
551 |         printf("\n[%s]: unable to open %s!\n", __func__, argv[2]);
552 |         free(ibot);
553 |         return -1;
554 |     }
555 | 
556 |     printf("\n[%s]: writing %s...\n", __func__, argv[2]);
557 | 
558 |     fwrite(ibot, length, 1, fd);
559 | 
560 |     free(ibot);
561 | 
562 |     fclose(fd);
563 | 
564 |     printf("[%s]: done!\n", __func__);
565 | 
566 |     return 0;
567 | }
568 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
  1 |                     GNU GENERAL PUBLIC LICENSE
  2 |                        Version 3, 29 June 2007
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502 | publicly available network server or other readily accessible means,
503 | then you must either (1) cause the Corresponding Source to be so
504 | available, or (2) arrange to deprive yourself of the benefit of the
505 | patent license for this particular work, or (3) arrange, in a manner
506 | consistent with the requirements of this License, to extend the patent
507 | license to downstream recipients.  "Knowingly relying" means you have
508 | actual knowledge that, but for the patent license, your conveying the
509 | covered work in a country, or your recipient's use of the covered work
510 | in a country, would infringe one or more identifiable patents in that
511 | country that you have reason to believe are valid.
512 | 
513 |   If, pursuant to or in connection with a single transaction or
514 | arrangement, you convey, or propagate by procuring conveyance of, a
515 | covered work, and grant a patent license to some of the parties
516 | receiving the covered work authorizing them to use, propagate, modify
517 | or convey a specific copy of the covered work, then the patent license
518 | you grant is automatically extended to all recipients of the covered
519 | work and works based on it.
520 | 
521 |   A patent license is "discriminatory" if it does not include within
522 | the scope of its coverage, prohibits the exercise of, or is
523 | conditioned on the non-exercise of one or more of the rights that are
524 | specifically granted under this License.  You may not convey a covered
525 | work if you are a party to an arrangement with a third party that is
526 | in the business of distributing software, under which you make payment
527 | to the third party based on the extent of your activity of conveying
528 | the work, and under which the third party grants, to any of the
529 | parties who would receive the covered work from you, a discriminatory
530 | patent license (a) in connection with copies of the covered work
531 | conveyed by you (or copies made from those copies), or (b) primarily
532 | for and in connection with specific products or compilations that
533 | contain the covered work, unless you entered into that arrangement,
534 | or that patent license was granted, prior to 28 March 2007.
535 | 
536 |   Nothing in this License shall be construed as excluding or limiting
537 | any implied license or other defenses to infringement that may
538 | otherwise be available to you under applicable patent law.
539 | 
540 |   12. No Surrender of Others' Freedom.
541 | 
542 |   If conditions are imposed on you (whether by court order, agreement or
543 | otherwise) that contradict the conditions of this License, they do not
544 | excuse you from the conditions of this License.  If you cannot convey a
545 | covered work so as to satisfy simultaneously your obligations under this
546 | License and any other pertinent obligations, then as a consequence you may
547 | not convey it at all.  For example, if you agree to terms that obligate you
548 | to collect a royalty for further conveying from those to whom you convey
549 | the Program, the only way you could satisfy both those terms and this
550 | License would be to refrain entirely from conveying the Program.
551 | 
552 |   13. Use with the GNU Affero General Public License.
553 | 
554 |   Notwithstanding any other provision of this License, you have
555 | permission to link or combine any covered work with a work licensed
556 | under version 3 of the GNU Affero General Public License into a single
557 | combined work, and to convey the resulting work.  The terms of this
558 | License will continue to apply to the part which is the covered work,
559 | but the special requirements of the GNU Affero General Public License,
560 | section 13, concerning interaction through a network will apply to the
561 | combination as such.
562 | 
563 |   14. Revised Versions of this License.
564 | 
565 |   The Free Software Foundation may publish revised and/or new versions of
566 | the GNU General Public License from time to time.  Such new versions will
567 | be similar in spirit to the present version, but may differ in detail to
568 | address new problems or concerns.
569 | 
570 |   Each version is given a distinguishing version number.  If the
571 | Program specifies that a certain numbered version of the GNU General
572 | Public License "or any later version" applies to it, you have the
573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation.  If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 | 
579 |   If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 | 
584 |   Later license versions may give you additional or different
585 | permissions.  However, no additional obligations are imposed on any
586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 | 
589 |   15. Disclaimer of Warranty.
590 | 
591 |   THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
596 | PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
597 | IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 | 
600 |   16. Limitation of Liability.
601 | 
602 |   IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 | 
612 |   17. Interpretation of Sections 15 and 16.
613 | 
614 |   If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 | 
621 |                      END OF TERMS AND CONDITIONS
622 | 
623 |             How to Apply These Terms to Your New Programs
624 | 
625 |   If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 | 
629 |   To do so, attach the following notices to the program.  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 <http://www.gnu.org/licenses/>.
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 | <http://www.gnu.org/licenses/>.
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 | <http://www.gnu.org/philosophy/why-not-lgpl.html>.


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