Update SEP patchfinder for iOS 17

checkra1n · Jun 6, 2023 · 1cee828 · 1cee828
1 parent 520d628
commit 1cee828
Showing 1 changed file with 8 additions and 2 deletions.
diff --git a/src/drivers/sep/sep.c b/src/drivers/sep/sep.c
@@ -92,8 +92,14 @@ void (*sepfw_kpf_hook)(void* sepfw_bytes, size_t sepfw_size);
 void sepfw_kpf(void* sepfw_bytes, size_t sepfw_size) {
  uint32_t* insn_stream = sepfw_bytes;
  for (uint32_t i=0; i < sepfw_size/4; i++) {
- if (insn_stream[i] == 0xe1810200) {
- insn_stream[i] = 0xe3a00000;
+ if (insn_stream[i] == 0xe1810200) { // orr r0, r1, r0, lsl 4
+ insn_stream[i] = 0xe3a00000; // mov r0, 0
+#ifdef SEP_DEBUG
+ fiprintf(stderr, "patched out bpr check\n");
+#endif
+ break;
+ } else if (insn_stream[i] == 0xe1930200) { // orrs r0, r3, r0, lsl 4
+ insn_stream[i] = 0xe1500000; // cmp r0, r0
 #ifdef SEP_DEBUG
  fiprintf(stderr, "patched out bpr check\n");
 #endif