diff --git a/app/src/main/cpp/Dobby b/app/src/main/cpp/Dobby
deleted file mode 160000
index b0176de..0000000
--- a/app/src/main/cpp/Dobby
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit b0176de574104726bb68dff3b77ee666300fc338
diff --git a/app/src/main/cpp/dobby/dobby.h b/app/src/main/cpp/dobby/dobby.h
new file mode 100644
index 0000000..745b798
--- /dev/null
+++ b/app/src/main/cpp/dobby/dobby.h
@@ -0,0 +1,152 @@
+#ifndef dobby_h
+#define dobby_h
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdbool.h>
+#include <stdint.h>
+
+typedef uintptr_t addr_t;
+typedef uint32_t addr32_t;
+typedef uint64_t addr64_t;
+
+typedef void *dobby_dummy_func_t;
+typedef void *asm_func_t;
+
+#if defined(__arm__)
+typedef struct {
+  uint32_t dummy_0;
+  uint32_t dummy_1;
+
+  uint32_t dummy_2;
+  uint32_t sp;
+
+  union {
+    uint32_t r[13];
+    struct {
+      uint32_t r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12;
+    } regs;
+  } general;
+
+  uint32_t lr;
+} DobbyRegisterContext;
+#elif defined(__arm64__) || defined(__aarch64__)
+#define ARM64_TMP_REG_NDX_0 17
+
+typedef union _FPReg {
+  __int128_t q;
+  struct {
+    double d1;
+    double d2;
+  } d;
+  struct {
+    float f1;
+    float f2;
+    float f3;
+    float f4;
+  } f;
+} FPReg;
+
+// register context
+typedef struct {
+  uint64_t dmmpy_0; // dummy placeholder
+  uint64_t sp;
+
+  uint64_t dmmpy_1; // dummy placeholder
+  union {
+    uint64_t x[29];
+    struct {
+      uint64_t x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15, x16, x17, x18, x19, x20, x21, x22,
+          x23, x24, x25, x26, x27, x28;
+    } regs;
+  } general;
+
+  uint64_t fp;
+  uint64_t lr;
+
+  union {
+    FPReg q[32];
+    struct {
+      FPReg q0, q1, q2, q3, q4, q5, q6, q7;
+      // [!!! READ ME !!!]
+      // for Arm64, can't access q8 - q31, unless you enable full floating-point register pack
+      FPReg q8, q9, q10, q11, q12, q13, q14, q15, q16, q17, q18, q19, q20, q21, q22, q23, q24, q25, q26, q27, q28, q29,
+          q30, q31;
+    } regs;
+  } floating;
+} DobbyRegisterContext;
+#elif defined(_M_IX86) || defined(__i386__)
+typedef struct _RegisterContext {
+  uint32_t dummy_0;
+  uint32_t esp;
+
+  uint32_t dummy_1;
+  uint32_t flags;
+
+  union {
+    struct {
+      uint32_t eax, ebx, ecx, edx, ebp, esp, edi, esi;
+    } regs;
+  } general;
+
+} DobbyRegisterContext;
+#elif defined(_M_X64) || defined(__x86_64__)
+typedef struct {
+  uint64_t dummy_0;
+  uint64_t rsp;
+
+  union {
+    struct {
+      uint64_t rax, rbx, rcx, rdx, rbp, rsp, rdi, rsi, r8, r9, r10, r11, r12, r13, r14, r15;
+    } regs;
+  } general;
+
+  uint64_t dummy_1;
+  uint64_t flags;
+} DobbyRegisterContext;
+#endif
+
+#define install_hook_name(name, fn_ret_t, fn_args_t...)                                                                \
+  static fn_ret_t fake_##name(fn_args_t);                                                                              \
+  static fn_ret_t (*orig_##name)(fn_args_t);                                                                           \
+  /* __attribute__((constructor)) */ static void install_hook_##name(void *sym_addr) {                                 \
+    DobbyHook(sym_addr, (dobby_dummy_func_t)fake_##name, (dobby_dummy_func_t *)&orig_##name);                          \
+    return;                                                                                                            \
+  }                                                                                                                    \
+  fn_ret_t fake_##name(fn_args_t)
+
+// memory code patch
+int DobbyCodePatch(void *address, uint8_t *buffer, uint32_t buffer_size);
+
+// function inline hook
+int DobbyHook(void *address, dobby_dummy_func_t replace_func, dobby_dummy_func_t *origin_func);
+
+// dynamic binary instruction instrument
+// for Arm64, can't access q8 - q31, unless enable full floating-point register pack
+typedef void (*dobby_instrument_callback_t)(void *address, DobbyRegisterContext *ctx);
+int DobbyInstrument(void *address, dobby_instrument_callback_t pre_handler);
+
+// destroy and restore code patch
+int DobbyDestroy(void *address);
+
+const char *DobbyGetVersion();
+
+// symbol resolver
+void *DobbySymbolResolver(const char *image_name, const char *symbol_name);
+
+// import table replace
+int DobbyImportTableReplace(char *image_name, char *symbol_name, dobby_dummy_func_t fake_func,
+                            dobby_dummy_func_t *orig_func);
+
+// for arm, Arm64, try use b xxx instead of ldr absolute indirect branch
+// for x86, x64, always use absolute indirect jump
+void dobby_enable_near_branch_trampoline();
+void dobby_disable_near_branch_trampoline();
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/app/src/main/cpp/dobby/x86/libdobby.a b/app/src/main/cpp/dobby/x86/libdobby.a
new file mode 100644
index 0000000..bfe8ff9
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diff --git a/app/src/main/cpp/dobby/x86_64/libdobby.a b/app/src/main/cpp/dobby/x86_64/libdobby.a
new file mode 100644
index 0000000..ebb072f
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