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-rw-r--r--frida_mode/src/asan/asan.c2
-rw-r--r--frida_mode/src/ctx/ctx_arm32.c1
-rw-r--r--frida_mode/src/ctx/ctx_arm64.c1
-rw-r--r--frida_mode/src/ctx/ctx_x86.c1
-rw-r--r--frida_mode/src/instrument/instrument_x64.c24
-rw-r--r--frida_mode/src/instrument/instrument_x86.c202
-rw-r--r--frida_mode/src/persistent/persistent_x86.c1
-rw-r--r--frida_mode/test/freetype2/GNUmakefile4
-rw-r--r--frida_mode/test/vorbis/GNUmakefile200
-rw-r--r--frida_mode/test/vorbis/Makefile13
-rwxr-xr-xfrida_mode/test/vorbis/get_symbol_addr.py36
11 files changed, 431 insertions, 54 deletions
diff --git a/frida_mode/src/asan/asan.c b/frida_mode/src/asan/asan.c
index f095fb46..884bec53 100644
--- a/frida_mode/src/asan/asan.c
+++ b/frida_mode/src/asan/asan.c
@@ -49,7 +49,7 @@ static gboolean asan_exclude_module(const GumModuleDetails *details,
 
 void asan_exclude_module_by_symbol(gchar *symbol_name) {
 
-  gum_process_enumerate_modules(asan_exclude_module, "__asan_loadN");
+  gum_process_enumerate_modules(asan_exclude_module, symbol_name);
 
 }
 
diff --git a/frida_mode/src/ctx/ctx_arm32.c b/frida_mode/src/ctx/ctx_arm32.c
index 049b5548..28fc706b 100644
--- a/frida_mode/src/ctx/ctx_arm32.c
+++ b/frida_mode/src/ctx/ctx_arm32.c
@@ -1,6 +1,7 @@
 #include "frida-gumjs.h"
 
 #include "ctx.h"
+#include "util.h"
 
 #if defined(__arm__)
 
diff --git a/frida_mode/src/ctx/ctx_arm64.c b/frida_mode/src/ctx/ctx_arm64.c
index 01f321e3..63b6cf09 100644
--- a/frida_mode/src/ctx/ctx_arm64.c
+++ b/frida_mode/src/ctx/ctx_arm64.c
@@ -1,6 +1,7 @@
 #include "frida-gumjs.h"
 
 #include "ctx.h"
+#include "util.h"
 
 #if defined(__aarch64__)
 
diff --git a/frida_mode/src/ctx/ctx_x86.c b/frida_mode/src/ctx/ctx_x86.c
index abfeafc8..438e1fde 100644
--- a/frida_mode/src/ctx/ctx_x86.c
+++ b/frida_mode/src/ctx/ctx_x86.c
@@ -1,6 +1,7 @@
 #include "frida-gumjs.h"
 
 #include "ctx.h"
+#include "util.h"
 
 #if defined(__i386__)
 
diff --git a/frida_mode/src/instrument/instrument_x64.c b/frida_mode/src/instrument/instrument_x64.c
index c271adc1..f0bce7e2 100644
--- a/frida_mode/src/instrument/instrument_x64.c
+++ b/frida_mode/src/instrument/instrument_x64.c
@@ -68,10 +68,10 @@ typedef struct {
   //  sahf
   //  mov    rax,QWORD PTR [rsp-0x80]
 
-  uint8_t mov_rax_rsp_80[5];
-  uint8_t lahf;
   uint8_t mov_rax_rsp_88[8];
-  uint8_t mov_rbx_rsp_90[8];
+  uint8_t lahf;
+  uint8_t mov_rax_rsp_90[8];
+  uint8_t mov_rbx_rsp_98[8];
 
   uint8_t mov_eax_prev_loc[6];
   uint8_t mov_prev_loc_curr_loc_shr1[10];
@@ -83,10 +83,10 @@ typedef struct {
   uint8_t adc_bl_0[3];
   uint8_t mov_ptr_rax_rbx[2];
 
-  uint8_t mov_rsp_90_rbx[8];
-  uint8_t mov_rsp_88_rax[8];
+  uint8_t mov_rsp_98_rbx[8];
+  uint8_t mov_rsp_90_rax[8];
   uint8_t sahf;
-  uint8_t mov_rsp_80_rax[5];
+  uint8_t mov_rsp_88_rax[8];
 
 } afl_log_code_asm_t;
 
@@ -102,10 +102,10 @@ typedef union {
 static const afl_log_code_asm_t template =
     {
 
-        .mov_rax_rsp_80 = {0x48, 0x89, 0x44, 0x24, 0x80},
-        .lahf = 0x9f,
         .mov_rax_rsp_88 = {0x48, 0x89, 0x84, 0x24, 0x78, 0xFF, 0xFF, 0xFF},
-        .mov_rbx_rsp_90 = {0x48, 0x89, 0x9C, 0x24, 0x70, 0xFF, 0xFF, 0xFF},
+        .lahf = 0x9f,
+        .mov_rax_rsp_90 = {0x48, 0x89, 0x84, 0x24, 0x70, 0xFF, 0xFF, 0xFF},
+        .mov_rbx_rsp_98 = {0x48, 0x89, 0x9C, 0x24, 0x68, 0xFF, 0xFF, 0xFF},
 
         .mov_eax_prev_loc = {0x8b, 0x05},
         .mov_prev_loc_curr_loc_shr1 = {0xc7, 0x05},
@@ -116,10 +116,10 @@ static const afl_log_code_asm_t template =
         .adc_bl_0 = {0x80, 0xd3, 0x00},
         .mov_ptr_rax_rbx = {0x88, 0x18},
 
-        .mov_rsp_90_rbx = {0x48, 0x8B, 0x9C, 0x24, 0x70, 0xFF, 0xFF, 0xFF},
-        .mov_rsp_88_rax = {0x48, 0x8B, 0x84, 0x24, 0x78, 0xFF, 0xFF, 0xFF},
+        .mov_rsp_98_rbx = {0x48, 0x8B, 0x9C, 0x24, 0x68, 0xFF, 0xFF, 0xFF},
+        .mov_rsp_90_rax = {0x48, 0x8B, 0x84, 0x24, 0x70, 0xFF, 0xFF, 0xFF},
         .sahf = 0x9e,
-        .mov_rsp_80_rax = {0x48, 0x8B, 0x44, 0x24, 0x80},
+        .mov_rsp_88_rax = {0x48, 0x8B, 0x84, 0x24, 0x78, 0xFF, 0xFF, 0xFF},
 
 }
 
diff --git a/frida_mode/src/instrument/instrument_x86.c b/frida_mode/src/instrument/instrument_x86.c
index 79664afa..ad837e2d 100644
--- a/frida_mode/src/instrument/instrument_x86.c
+++ b/frida_mode/src/instrument/instrument_x86.c
@@ -1,67 +1,144 @@
 #include "frida-gumjs.h"
 
 #include "instrument.h"
+#include "stalker.h"
 #include "util.h"
 
 #if defined(__i386__)
 
-static GumAddress current_log_impl = GUM_ADDRESS(0);
+static GHashTable *coverage_blocks = NULL;
 
-static void instrument_coverage_function(GumX86Writer *cw) {
+  #pragma pack(push, 1)
+typedef struct {
 
-  gum_x86_writer_put_pushfx(cw);
-  gum_x86_writer_put_push_reg(cw, GUM_REG_ECX);
-  gum_x86_writer_put_push_reg(cw, GUM_REG_EDX);
+  // cur_location = (block_address >> 4) ^ (block_address << 8);
+  // shared_mem[cur_location ^ prev_location]++;
+  // prev_location = cur_location >> 1;
 
-  gum_x86_writer_put_mov_reg_address(cw, GUM_REG_ECX,
-                                     GUM_ADDRESS(&instrument_previous_pc));
-  gum_x86_writer_put_mov_reg_reg_ptr(cw, GUM_REG_EDX, GUM_REG_ECX);
-  gum_x86_writer_put_xor_reg_reg(cw, GUM_REG_EDX, GUM_REG_EDI);
+  uint8_t mov_eax_esp_4[4];
+  uint8_t lahf;
+  uint8_t mov_eax_esp_8[4];
+  uint8_t mov_ebx_esp_c[4];
 
-  gum_x86_writer_put_add_reg_imm(cw, GUM_REG_EDX, GUM_ADDRESS(__afl_area_ptr));
+  uint8_t mov_eax_prev_loc[5];
+  uint8_t mov_prev_loc_curr_loc_shr1[10];
 
-  /* add byte ptr [edx], 1 */
-  uint8_t add_byte_ptr_edx_1[] = {0x80, 0x02, 0x01};
-  gum_x86_writer_put_bytes(cw, add_byte_ptr_edx_1, sizeof(add_byte_ptr_edx_1));
+  uint8_t xor_eax_curr_loc[5];
+  uint8_t add_eax_area_ptr[5];
 
-  /* adc byte ptr [edx], 0 */
-  uint8_t adc_byte_ptr_edx_0[] = {0x80, 0x12, 0x00};
-  gum_x86_writer_put_bytes(cw, adc_byte_ptr_edx_0, sizeof(adc_byte_ptr_edx_0));
+  uint8_t mov_ebx_ptr_eax[2];
+  uint8_t add_bl_1[3];
+  uint8_t adc_bl_0[3];
+  uint8_t mov_ptr_eax_ebx[2];
 
-  uint8_t ror_di_1[] = {0x66, 0xd1, 0xcf};
-  gum_x86_writer_put_bytes(cw, ror_di_1, sizeof(ror_di_1));
-  gum_x86_writer_put_mov_reg_ptr_reg(cw, GUM_REG_ECX, GUM_REG_EDI);
+  uint8_t mov_esp_c_ebx[4];
+  uint8_t mov_esp_8_eax[4];
+  uint8_t sahf;
+  uint8_t mov_esp_4_eax[4];
 
-  gum_x86_writer_put_pop_reg(cw, GUM_REG_EDX);
-  gum_x86_writer_put_pop_reg(cw, GUM_REG_ECX);
-  gum_x86_writer_put_popfx(cw);
-  gum_x86_writer_put_ret(cw);
+} afl_log_code_asm_t;
+
+  #pragma pack(pop)
+
+typedef union {
+
+  afl_log_code_asm_t code;
+  uint8_t            bytes[0];
+
+} afl_log_code;
+
+static const afl_log_code_asm_t template =
+    {
+
+        .mov_eax_esp_4 = {0x89, 0x44, 0x24, 0xFC},
+        .lahf = 0x9f,
+        .mov_eax_esp_8 = {0x89, 0x44, 0x24, 0xF8},
+        .mov_ebx_esp_c = {0x89, 0x5C, 0x24, 0xF4},
+
+        .mov_eax_prev_loc = {0xA1},
+        .mov_prev_loc_curr_loc_shr1 = {0xc7, 0x05},
+
+        .xor_eax_curr_loc = {0x35},
+        .add_eax_area_ptr = {0x05},
+        .mov_ebx_ptr_eax = {0x8a, 0x18},
+        .add_bl_1 = {0x80, 0xc3, 0x01},
+        .adc_bl_0 = {0x80, 0xd3, 0x00},
+        .mov_ptr_eax_ebx = {0x88, 0x18},
+
+        .mov_esp_c_ebx = {0x8B, 0x5C, 0x24, 0xF4},
+        .mov_esp_8_eax = {0x8B, 0x44, 0x24, 0xF8},
+        .sahf = 0x9e,
+        .mov_esp_4_eax = {0x8B, 0x44, 0x24, 0xFC},
 
 }
 
+;
+
 gboolean instrument_is_coverage_optimize_supported(void) {
 
   return true;
 
 }
 
-static void instrument_coverate_write_function(GumStalkerOutput *output) {
+static void instrument_coverage_switch(GumStalkerObserver *self,
+                                       gpointer            start_address,
+                                       const cs_insn *     from_insn,
+                                       gpointer *          target) {
 
-  GumX86Writer *cw = output->writer.x86;
+  UNUSED_PARAMETER(self);
+  UNUSED_PARAMETER(start_address);
+
+  cs_x86 *   x86;
+  cs_x86_op *op;
+  if (from_insn == NULL) { return; }
+
+  x86 = &from_insn->detail->x86;
+  op = x86->operands;
+
+  if (!g_hash_table_contains(coverage_blocks, GSIZE_TO_POINTER(*target))) {
+
+    return;
+
+  }
+
+  switch (from_insn->id) {
+
+    case X86_INS_CALL:
+    case X86_INS_JMP:
+      if (x86->op_count != 1) {
+
+        FATAL("Unexpected operand count: %d", x86->op_count);
+
+      }
+
+      if (op[0].type != X86_OP_IMM) { return; }
+
+      break;
+    case X86_INS_RET:
+      break;
+    default:
+      return;
 
-  if (current_log_impl == 0 ||
-      !gum_x86_writer_can_branch_directly_between(cw->pc, current_log_impl) ||
-      !gum_x86_writer_can_branch_directly_between(cw->pc + 128,
-                                                  current_log_impl)) {
+  }
+
+  *target = (guint8 *)*target + sizeof(afl_log_code);
+
+}
+
+static void instrument_coverage_suppress_init(void) {
 
-    gconstpointer after_log_impl = cw->code + 1;
+  static gboolean initialized = false;
+  if (initialized) { return; }
+  initialized = true;
 
-    gum_x86_writer_put_jmp_near_label(cw, after_log_impl);
+  GumStalkerObserver *         observer = stalker_get_observer();
+  GumStalkerObserverInterface *iface = GUM_STALKER_OBSERVER_GET_IFACE(observer);
+  iface->switch_callback = instrument_coverage_switch;
 
-    current_log_impl = cw->pc;
-    instrument_coverage_function(cw);
+  coverage_blocks = g_hash_table_new(g_direct_hash, g_direct_equal);
+  if (coverage_blocks == NULL) {
 
-    gum_x86_writer_put_label(cw, after_log_impl);
+    FATAL("Failed to g_hash_table_new, errno: %d", errno);
 
   }
 
@@ -70,14 +147,61 @@ static void instrument_coverate_write_function(GumStalkerOutput *output) {
 void instrument_coverage_optimize(const cs_insn *   instr,
                                   GumStalkerOutput *output) {
 
+  afl_log_code  code = {0};
   GumX86Writer *cw = output->writer.x86;
   guint64 area_offset = instrument_get_offset_hash(GUM_ADDRESS(instr->address));
-  instrument_coverate_write_function(output);
+  gsize   map_size_pow2;
+  gsize   area_offset_ror;
+
+  code.code = template;
+
+  instrument_coverage_suppress_init();
+
+  // gum_x86_writer_put_breakpoint(cw);
+
+  if (!g_hash_table_add(coverage_blocks, GSIZE_TO_POINTER(cw->code))) {
+
+    FATAL("Failed - g_hash_table_add");
+
+  }
+
+  gssize prev_loc_value_offset2 =
+      offsetof(afl_log_code, code.mov_eax_prev_loc) +
+      sizeof(code.code.mov_eax_prev_loc) - sizeof(gint);
+
+  *((gint *)&code.bytes[prev_loc_value_offset2]) =
+      (gint)GPOINTER_TO_SIZE(&instrument_previous_pc);
+
+  gssize curr_loc_shr_1_offset =
+      offsetof(afl_log_code, code.mov_prev_loc_curr_loc_shr1) +
+      sizeof(code.code.mov_prev_loc_curr_loc_shr1) - sizeof(guint32);
+
+  map_size_pow2 = util_log2(__afl_map_size);
+  area_offset_ror = util_rotate(area_offset, 1, map_size_pow2);
+
+  *((guint32 *)&code.bytes[curr_loc_shr_1_offset]) = (guint32)(area_offset_ror);
+
+  gssize prev_loc_value_offset =
+      offsetof(afl_log_code, code.mov_prev_loc_curr_loc_shr1) +
+      sizeof(code.code.mov_prev_loc_curr_loc_shr1) - sizeof(gint) -
+      sizeof(guint32);
+
+  *((gint *)&code.bytes[prev_loc_value_offset]) =
+      (gint)GPOINTER_TO_SIZE(&instrument_previous_pc);
+
+  gssize xor_curr_loc_offset = offsetof(afl_log_code, code.xor_eax_curr_loc) +
+                               sizeof(code.code.xor_eax_curr_loc) -
+                               sizeof(guint32);
+
+  *((guint32 *)&code.bytes[xor_curr_loc_offset]) = (guint32)area_offset;
+
+  gssize add_area_ptr_offset = offsetof(afl_log_code, code.add_eax_area_ptr) +
+                               sizeof(code.code.add_eax_area_ptr) -
+                               sizeof(guint32);
+
+  *((guint32 *)&code.bytes[add_area_ptr_offset]) = (guint32)__afl_area_ptr;
 
-  gum_x86_writer_put_push_reg(cw, GUM_REG_EDI);
-  gum_x86_writer_put_mov_reg_address(cw, GUM_REG_EDI, area_offset);
-  gum_x86_writer_put_call_address(cw, current_log_impl);
-  gum_x86_writer_put_pop_reg(cw, GUM_REG_EDI);
+  gum_x86_writer_put_bytes(cw, code.bytes, sizeof(afl_log_code));
 
 }
 
diff --git a/frida_mode/src/persistent/persistent_x86.c b/frida_mode/src/persistent/persistent_x86.c
index 902274b3..5425b01b 100644
--- a/frida_mode/src/persistent/persistent_x86.c
+++ b/frida_mode/src/persistent/persistent_x86.c
@@ -4,6 +4,7 @@
 
 #include "instrument.h"
 #include "persistent.h"
+#include "util.h"
 
 #if defined(__i386__)
 
diff --git a/frida_mode/test/freetype2/GNUmakefile b/frida_mode/test/freetype2/GNUmakefile
index 891660ca..f7a50de2 100644
--- a/frida_mode/test/freetype2/GNUmakefile
+++ b/frida_mode/test/freetype2/GNUmakefile
@@ -84,7 +84,7 @@ all: $(TEST_BIN)
 	make -C $(ROOT)frida_mode/
 
 32:
-	CXXFLAGS="-m32" LDFLAGS="-m32" ARCH="x86" make all
+	CFLAGS="-m32" CXXFLAGS="-m32" LDFLAGS="-m32" ARCH="x86" make all
 
 $(BUILD_DIR):
 	mkdir -p $@
@@ -126,7 +126,7 @@ $(HARNESS_SRC):
 	wget -O $@ $(HARNESS_URL)
 
 $(HARNESS_OBJ): $(HARNESS_SRC)
-	$(CC) -o $@ -c $<
+	$(CC) $(CFLAGS) -o $@ -c $<
 
 ########## TEST #######
 
diff --git a/frida_mode/test/vorbis/GNUmakefile b/frida_mode/test/vorbis/GNUmakefile
new file mode 100644
index 00000000..59ae9a59
--- /dev/null
+++ b/frida_mode/test/vorbis/GNUmakefile
@@ -0,0 +1,200 @@
+PWD:=$(shell pwd)/
+ROOT:=$(PWD)../../../
+BUILD_DIR:=$(PWD)build/
+
+AFLPP_FRIDA_DRIVER_HOOK_OBJ=$(ROOT)frida_mode/build/frida_hook.so
+AFLPP_QEMU_DRIVER_HOOK_OBJ=$(ROOT)frida_mode/build/qemu_hook.so
+
+OGG_GIT_REPO:=https://github.com/xiph/ogg.git
+OGG_BUILD_DIR:=$(BUILD_DIR)ogg/
+OGG_DIR:=$(OGG_BUILD_DIR)ogg/
+OGG_INSTALL:=$(OGG_BUILD_DIR)install/
+OGG_LIB:=$(OGG_INSTALL)lib/libogg.a
+
+VORBIS_GIT_REPO:=https://github.com/xiph/vorbis.git
+VORBIS_BUILD_DIR:=$(BUILD_DIR)vorbis/
+VORBIS_DIR:=$(VORBIS_BUILD_DIR)vorbis/
+VORBIS_INSTALL:=$(VORBIS_BUILD_DIR)install/
+VORBIS_LIB:=$(VORBIS_INSTALL)lib/libvorbis.a
+VORBISFILE_LIB:=$(VORBIS_INSTALL)lib/libvorbisfile.a
+
+DECODE_URL:=https://raw.githubusercontent.com/google/oss-fuzz/688aadaf44499ddada755562109e5ca5eb3c5662/projects/vorbis/decode_fuzzer.cc
+DECODE_SRC:=$(BUILD_DIR)decode_fuzzer.cc
+DECODE_OBJ:=$(BUILD_DIR)decode_fuzzer.o
+
+HARNESS_URL:=https://raw.githubusercontent.com/llvm/llvm-project/main/compiler-rt/lib/fuzzer/standalone/StandaloneFuzzTargetMain.c
+HARNESS_SRC:=$(BUILD_DIR)StandaloneFuzzTargetMain.c
+HARNESS_OBJ:=$(BUILD_DIR)StandaloneFuzzTargetMain.o
+
+LDFLAGS += -lpthread
+
+TEST_BIN:=$(BUILD_DIR)decode_fuzzer
+ifeq "$(shell uname)" "Darwin"
+TEST_BIN_LDFLAGS:=-undefined dynamic_lookup -Wl,-no_pie
+endif
+
+TEST_DATA_DIR:=$(BUILD_DIR)in/
+TEST_DATA_SRC:=https://github.com/google/fuzzbench/blob/master/benchmarks/vorbis-2017-12-11/seeds/sound.ogg?raw=true
+TEST_DATA_FILE:=$(TEST_DATA_DIR)sound.ogg
+DUMMY_DATA_FILE:=$(BUILD_DIR)default_seed
+
+FRIDA_OUT:=$(BUILD_DIR)frida-out
+QEMU_OUT:=$(BUILD_DIR)qemu-out
+
+ifndef ARCH
+
+ARCH=$(shell uname -m)
+ifeq "$(ARCH)" "aarch64"
+ ARCH:=arm64
+endif
+
+ifeq "$(ARCH)" "i686"
+ ARCH:=x86
+endif
+endif
+
+GET_SYMBOL_ADDR:=$(ROOT)frida_mode/util/get_symbol_addr.sh
+
+AFL_QEMU_PERSISTENT_ADDR=$(shell $(GET_SYMBOL_ADDR) $(TEST_BIN) LLVMFuzzerTestOneInput 0x4000000000)
+
+ifeq "$(ARCH)" "aarch64"
+ AFL_FRIDA_PERSISTENT_ADDR=$(shell $(GET_SYMBOL_ADDR) $(TEST_BIN) LLVMFuzzerTestOneInput 0x0000aaaaaaaaa000)
+endif
+
+ifeq "$(ARCH)" "x86_64"
+ AFL_FRIDA_PERSISTENT_ADDR=$(shell $(GET_SYMBOL_ADDR) $(TEST_BIN) LLVMFuzzerTestOneInput 0x0000555555554000)
+endif
+
+ifeq "$(ARCH)" "x86"
+ AFL_FRIDA_PERSISTENT_ADDR=$(shell $(GET_SYMBOL_ADDR) $(TEST_BIN) LLVMFuzzerTestOneInput 0x56555000)
+endif
+
+.PHONY: all clean frida hook
+
+all: $(TEST_BIN)
+	make -C $(ROOT)frida_mode/
+
+32:
+	CXXFLAGS="-m32" LDFLAGS="-m32" ARCH="x86" make all
+
+$(BUILD_DIR):
+	mkdir -p $@
+
+########## OGG #######
+
+$(OGG_BUILD_DIR): | $(BUILD_DIR)
+	mkdir -p $@
+
+$(OGG_DIR): | $(OGG_BUILD_DIR)
+	git clone $(OGG_GIT_REPO) $@
+	git -C $(OGG_DIR) checkout c8391c2b267a7faf9a09df66b1f7d324e9eb7766
+
+$(OGG_LIB): | $(OGG_DIR)
+	cd $(OGG_DIR) && ./autogen.sh
+	cd $(OGG_DIR) && ./configure \
+		--prefix=$(OGG_INSTALL) \
+		--enable-static \
+		--disable-shared \
+		--disable-crc
+	make -C $(OGG_DIR) install
+
+ogg: $(OGG_LIB)
+
+########## VORBIS #######
+
+$(VORBIS_BUILD_DIR): | $(BUILD_DIR)
+	mkdir -p $@
+
+$(VORBIS_DIR): | $(VORBIS_BUILD_DIR)
+	git clone $(VORBIS_GIT_REPO) $@
+	git -C $(VORBIS_DIR) checkout c1c2831fc7306d5fbd7bc800324efd12b28d327f
+
+$(VORBIS_LIB): $(OGG_LIB) | $(VORBIS_DIR)
+	cd $(VORBIS_DIR) && ./autogen.sh
+	cd $(VORBIS_DIR) && ./configure \
+		--prefix=$(VORBIS_INSTALL) \
+		--enable-static \
+    	--disable-shared \
+		--with-ogg=$(OGG_INSTALL)
+	make -C $(VORBIS_DIR) install
+
+vorbis: $(VORBIS_LIB)
+
+########## HARNESS #######
+
+$(DECODE_SRC):
+	wget -O $@ $(DECODE_URL)
+
+$(DECODE_OBJ): $(DECODE_SRC)
+	$(CXX) -o $@ -c $< -I$(VORBIS_DIR)include/ -I$(OGG_DIR)include/
+
+decode: $(DECODE_OBJ)
+
+########## HARNESS #######
+
+$(HARNESS_SRC):
+	wget -O $@ $(HARNESS_URL)
+
+$(HARNESS_OBJ): $(HARNESS_SRC)
+	$(CC) -o $@ -c $<
+
+harness: $(HARNESS_OBJ)
+
+########## TEST #######
+
+$(TEST_BIN): $(VORBIS_LIB) $(OGG_LIB) $(HARNESS_OBJ) $(DECODE_OBJ)
+	$(CXX) \
+		$(CXXFLAGS) \
+		-std=c++11 \
+		$(DECODE_OBJ) \
+		$(HARNESS_OBJ) \
+		$(VORBISFILE_LIB) \
+     	$(VORBIS_LIB) \
+		$(OGG_LIB) \
+	    -o $@
+
+########## DUMMY #######
+
+$(TEST_DATA_DIR): | $(BUILD_DIR)
+	mkdir -p $@
+
+$(DUMMY_DATA_FILE): | $(TEST_DATA_DIR)
+	dd if=/dev/zero bs=1048576 count=1 of=$@
+
+###### TEST DATA #######
+
+$(TEST_DATA_FILE):
+	wget -O $@ $(TEST_DATA_SRC)
+
+clean:
+	rm -rf $(BUILD_DIR)
+
+frida: $(TEST_BIN) $(AFLPP_FRIDA_DRIVER_HOOK_OBJ) $(TEST_DATA_FILE) $(DUMMY_DATA_FILE)
+	AFL_FRIDA_PERSISTENT_CNT=1000000 \
+	AFL_FRIDA_PERSISTENT_HOOK=$(AFLPP_FRIDA_DRIVER_HOOK_OBJ) \
+	AFL_FRIDA_PERSISTENT_ADDR=$(AFL_FRIDA_PERSISTENT_ADDR) \
+	AFL_ENTRYPOINT=$(AFL_FRIDA_PERSISTENT_ADDR) \
+	$(ROOT)afl-fuzz \
+		-i $(TEST_DATA_DIR) \
+		-o $(FRIDA_OUT) \
+		-m none \
+		-d \
+		-O \
+		-V 30 \
+		-- \
+			$(TEST_BIN) $(DUMMY_DATA_FILE)
+
+qemu: $(TEST_BIN) $(AFLPP_QEMU_DRIVER_HOOK_OBJ) $(TEST_DATA_FILE) $(DUMMY_DATA_FILE)
+	AFL_QEMU_PERSISTENT_CNT=1000000 \
+	AFL_QEMU_PERSISTENT_HOOK=$(AFLPP_QEMU_DRIVER_HOOK_OBJ) \
+	AFL_QEMU_PERSISTENT_ADDR=$(AFL_QEMU_PERSISTENT_ADDR) \
+	AFL_ENTRYPOINT=$(AFL_QEMU_PERSISTENT_ADDR) \
+	$(ROOT)afl-fuzz \
+		-i $(TEST_DATA_DIR) \
+		-o $(QEMU_OUT) \
+		-m none \
+		-d \
+		-Q \
+		-V 30 \
+		-- \
+			$(TEST_BIN) $(DUMMY_DATA_FILE)
diff --git a/frida_mode/test/vorbis/Makefile b/frida_mode/test/vorbis/Makefile
new file mode 100644
index 00000000..07b139e9
--- /dev/null
+++ b/frida_mode/test/vorbis/Makefile
@@ -0,0 +1,13 @@
+all:
+	@echo trying to use GNU make...
+	@gmake all || echo please install GNUmake
+
+32:
+	@echo trying to use GNU make...
+	@gmake 32 || echo please install GNUmake
+
+clean:
+	@gmake clean
+
+frida:
+	@gmake frida
diff --git a/frida_mode/test/vorbis/get_symbol_addr.py b/frida_mode/test/vorbis/get_symbol_addr.py
new file mode 100755
index 00000000..1c46e010
--- /dev/null
+++ b/frida_mode/test/vorbis/get_symbol_addr.py
@@ -0,0 +1,36 @@
+#!/usr/bin/python3
+import argparse
+from elftools.elf.elffile import ELFFile
+
+def process_file(file, symbol, base):
+    with open(file, 'rb') as f:
+        elf = ELFFile(f)
+        symtab = elf.get_section_by_name('.symtab')
+        mains = symtab.get_symbol_by_name(symbol)
+        if len(mains) != 1:
+            print ("Failed to find main")
+            return 1
+
+        main_addr = mains[0]['st_value']
+        main = base + main_addr
+        print ("0x%016x" % main)
+        return 0
+
+def hex_value(x):
+    return int(x, 16)
+
+def main():
+    parser = argparse.ArgumentParser(description='Process some integers.')
+    parser.add_argument('-f', '--file', dest='file', type=str,
+                    help='elf file name', required=True)
+    parser.add_argument('-s', '--symbol', dest='symbol', type=str,
+                    help='symbol name', required=True)
+    parser.add_argument('-b', '--base', dest='base', type=hex_value,
+                    help='elf base address', required=True)
+
+    args = parser.parse_args()
+    return process_file (args.file, args.symbol, args.base)
+
+if __name__ == "__main__":
+    ret = main()
+    exit(ret)