diff options
| -rw-r--r-- | frida_mode/include/instrument.h | 3 | ||||
| -rw-r--r-- | frida_mode/include/util.h | 2 | ||||
| -rw-r--r-- | frida_mode/src/instrument/instrument.c | 45 | ||||
| -rw-r--r-- | frida_mode/src/instrument/instrument_debug.c | 128 | ||||
| -rw-r--r-- | frida_mode/src/main.c | 3 | ||||
| -rw-r--r-- | frida_mode/src/ranges.c | 67 | ||||
| -rw-r--r-- | frida_mode/test/libpcap/GNUmakefile | 188 | ||||
| -rw-r--r-- | frida_mode/test/libpcap/Makefile | 1143 | ||||
| -rw-r--r-- | frida_mode/test/libpcap/aflpp_qemu_driver_hook.c | 97 | ||||
| -rwxr-xr-x | frida_mode/test/libpcap/get_symbol_addr.py | 36 | ||||
| -rw-r--r-- | frida_mode/test/re2/GNUmakefile | 170 | ||||
| -rw-r--r-- | frida_mode/test/re2/Makefile | 22 | ||||
| -rw-r--r-- | frida_mode/test/re2/aflpp_qemu_driver_hook.c | 97 | ||||
| -rwxr-xr-x | frida_mode/test/re2/get_symbol_addr.py | 36 |
14 files changed, 2014 insertions, 23 deletions
diff --git a/frida_mode/include/instrument.h b/frida_mode/include/instrument.h index 03fd33e5..75ee6396 100644 --- a/frida_mode/include/instrument.h +++ b/frida_mode/include/instrument.h @@ -19,5 +19,8 @@ gboolean instrument_is_coverage_optimize_supported(void); void instrument_coverage_optimize(const cs_insn * instr, GumStalkerOutput *output); +void instrument_debug_start(uint64_t address, GumStalkerOutput *output); +void instrument_debug_instruction(uint64_t address, uint16_t size); +void instrument_debug_end(GumStalkerOutput *output); #endif diff --git a/frida_mode/include/util.h b/frida_mode/include/util.h index afd0b9c1..7b443b5e 100644 --- a/frida_mode/include/util.h +++ b/frida_mode/include/util.h @@ -4,7 +4,7 @@ #include "frida-gum.h" #define UNUSED_PARAMETER(x) (void)(x) -#define IGNORED_RERURN(x) (void)!(x) +#define IGNORED_RETURN(x) (void)!(x) guint64 util_read_address(char *key); diff --git a/frida_mode/src/instrument/instrument.c b/frida_mode/src/instrument/instrument.c index 67eadc3f..f21849a6 100644 --- a/frida_mode/src/instrument/instrument.c +++ b/frida_mode/src/instrument/instrument.c @@ -47,7 +47,7 @@ __attribute__((hot)) static void on_basic_block(GumCpuContext *context, "x, previous_pc: 0x%016" G_GINT64_MODIFIER "x\n", current_pc, previous_pc); - IGNORED_RERURN(write(STDOUT_FILENO, buffer, len + 1)); + IGNORED_RETURN(write(STDOUT_FILENO, buffer, len + 1)); } @@ -79,17 +79,48 @@ static void instr_basic_block(GumStalkerIterator *iterator, const cs_insn *instr; gboolean begin = TRUE; + gboolean excluded; + while (gum_stalker_iterator_next(iterator, &instr)) { if (instr->address == entry_start) { entry_prologue(iterator, output); } if (instr->address == persistent_start) { persistent_prologue(output); } - if (begin) { + /* + * Until we reach AFL_ENTRYPOINT (assumed to be main if not specified) or + * AFL_FRIDA_PERSISTENT_ADDR (if specified), we don't mark our ranges + * excluded as we wish to remain inside stalker at all times so that we can + * instrument our entry point and persistent loop (if present). This allows + * the user to exclude ranges which would be traversed between main and the + * AFL_ENTRYPOINT, but which they don't want included in their coverage + * information when fuzzing. + * + * Since we have no means to discard the instrumented copies of blocks + * (setting the trust threshold simply causes a new copy to be made on each + * execution), we instead ensure that we honour the additional + * instrumentation requested (e.g. coverage, asan and complog) when a block + * is compiled no matter where we are during initialization. We will end up + * re-using these blocks if the code under test calls a block which is also + * used during initialization. + * + * Coverage data generated during initialization isn't a problem since the + * map is zeroed each time the target is forked or each time the persistent + * loop is run. + * + * Lastly, we don't enable pre-fetching back to the parent until we reach + * our AFL_ENTRYPOINT, since it is not until then that we start the + * fork-server and thus start executing in the child. + */ + excluded = range_is_excluded(GSIZE_TO_POINTER(instr->address)); + if (unlikely(begin)) { + + instrument_debug_start(instr->address, output); prefetch_write(GSIZE_TO_POINTER(instr->address)); - if (!range_is_excluded(GSIZE_TO_POINTER(instr->address))) { - if (optimize) { + if (likely(!excluded)) { + + if (likely(optimize)) { instrument_coverage_optimize(instr, output); @@ -106,7 +137,9 @@ static void instr_basic_block(GumStalkerIterator *iterator, } - if (!range_is_excluded(GSIZE_TO_POINTER(instr->address))) { + instrument_debug_instruction(instr->address, instr->size); + + if (likely(!excluded)) { asan_instrument(instr, iterator); cmplog_instrument(instr, iterator); @@ -117,6 +150,8 @@ static void instr_basic_block(GumStalkerIterator *iterator, } + instrument_debug_end(output); + } void instrument_init(void) { diff --git a/frida_mode/src/instrument/instrument_debug.c b/frida_mode/src/instrument/instrument_debug.c new file mode 100644 index 00000000..3a554ad0 --- /dev/null +++ b/frida_mode/src/instrument/instrument_debug.c @@ -0,0 +1,128 @@ +#include <stdarg.h> +#include <stdio.h> +#include <unistd.h> + +#include "frida-gum.h" + +#include "util.h" + +#ifdef FRIDA_DEBUG + +static gpointer instrument_gen_start = NULL; + +static void instrument_debug(char *format, ...) { + + va_list ap; + char buffer[4096] = {0}; + + va_start(ap, format); + + vsnprintf(buffer, sizeof(buffer) - 1, format, ap); + va_end(ap); + + IGNORED_RETURN(write(STDOUT_FILENO, buffer, sizeof(buffer))); + +} + +static void instrument_disasm(guint8 *code, guint size) { + + csh capstone; + cs_err err; + cs_insn *insn; + size_t count, i; + + err = cs_open(GUM_DEFAULT_CS_ARCH, + GUM_DEFAULT_CS_MODE | GUM_DEFAULT_CS_ENDIAN, &capstone); + g_assert(err == CS_ERR_OK); + + count = cs_disasm(capstone, code, size, GPOINTER_TO_SIZE(code), 0, &insn); + g_assert(insn != NULL); + + for (i = 0; i != count; i++) { + + instrument_debug("\t0x%" G_GINT64_MODIFIER "x\t%s %s\n", insn[i].address, + insn[i].mnemonic, insn[i].op_str); + + } + + cs_free(insn, count); + + cs_close(&capstone); + +} + +static gpointer instrument_cur(GumStalkerOutput *output) { + + #if defined(__i386__) || defined(__x86_64__) + return gum_x86_writer_cur(output->writer.x86); + #elif defined(__aarch64__) + return gum_arm64_writer_cur(output->writer.arm64); + #elif defined(__arm__) + return gum_arm_writer_cur(output->writer.arm); + #else + #error "Unsupported architecture" + #endif + +} + +void instrument_debug_start(uint64_t address, GumStalkerOutput *output) { + + GumDebugSymbolDetails details; + + instrument_gen_start = instrument_cur(output); + + if (gum_symbol_details_from_address(GSIZE_TO_POINTER(address), &details)) { + + instrument_debug("\n\n***\n\nCreating block for 0x%" G_GINT64_MODIFIER + "x (%s!%s):\n", + address, details.module_name, details.symbol_name); + + } else { + + instrument_debug( + "\n\n***\n\nCreating block for 0x%" G_GINT64_MODIFIER "x:\n", address); + + } + +} + +void instrument_debug_instruction(uint64_t address, uint16_t size) { + + uint8_t *start = (uint8_t *)GSIZE_TO_POINTER(address); + instrument_disasm(start, size); + +} + +void instrument_debug_end(GumStalkerOutput *output) { + + gpointer instrument_gen_end = instrument_cur(output); + uint16_t size = GPOINTER_TO_SIZE(instrument_gen_end) - + GPOINTER_TO_SIZE(instrument_gen_start); + + instrument_debug("\nGenerated block %p\n", instrument_gen_start); + instrument_disasm(instrument_gen_start, size); + +} + +#else +void instrument_debug_start(void *address) { + + UNUSED_PARAMETER(address); + +} + +void instrument_debug_instruction(uint64_t address, uint16_t size) { + + UNUSED_PARAMETER(address); + UNUSED_PARAMETER(size); + +} + +void instrument_debug_end(GumStalkerOutput *output) { + + UNUSED_PARAMETER(output); + +} + +#endif + diff --git a/frida_mode/src/main.c b/frida_mode/src/main.c index 21073cbe..e8015905 100644 --- a/frida_mode/src/main.c +++ b/frida_mode/src/main.c @@ -1,3 +1,4 @@ +#include <errno.h> #include <unistd.h> #include <sys/types.h> @@ -58,10 +59,10 @@ static void on_main_os(int argc, char **argv, char **envp) { static void on_main_os(int argc, char **argv, char **envp) { UNUSED_PARAMETER(argc); - /* Personality doesn't affect the current process, it only takes effect on * evec */ int persona = personality(ADDR_NO_RANDOMIZE); + if (persona == -1) { WARNF("Failed to set ADDR_NO_RANDOMIZE: %d", errno); } if ((persona & ADDR_NO_RANDOMIZE) == 0) { execvpe(argv[0], argv, envp); } GumInterceptor *interceptor = gum_interceptor_obtain(); diff --git a/frida_mode/src/ranges.c b/frida_mode/src/ranges.c index e3f09f9e..aa140708 100644 --- a/frida_mode/src/ranges.c +++ b/frida_mode/src/ranges.c @@ -480,15 +480,40 @@ static GArray *merge_ranges(GArray *a) { } +static gboolean exclude_ranges_callback(const GumRangeDetails *details, + gpointer user_data) { + + UNUSED_PARAMETER(user_data); + gchar * name; + gboolean found; + GumStalker *stalker; + if (details->file == NULL) { return TRUE; } + name = g_path_get_basename(details->file->path); + + found = (g_strcmp0(name, "afl-frida-trace.so") == 0); + g_free(name); + if (!found) { return TRUE; } + + stalker = stalker_get(); + gum_stalker_exclude(stalker, details->range); + + return FALSE; + +} + +static void ranges_exclude_self(void) { + + gum_process_enumerate_ranges(GUM_PAGE_EXECUTE, exclude_ranges_callback, NULL); + +} + void ranges_init(void) { - GumMemoryRange ri; - GArray * step1; - GArray * step2; - GArray * step3; - GArray * step4; - GumMemoryRange *r; - GumStalker * stalker; + GumMemoryRange ri; + GArray * step1; + GArray * step2; + GArray * step3; + GArray * step4; if (getenv("AFL_FRIDA_DEBUG_MAPS") != NULL) { @@ -535,20 +560,14 @@ void ranges_init(void) { ranges = merge_ranges(step4); print_ranges("final", ranges); - stalker = stalker_get(); - - for (guint i = 0; i < ranges->len; i++) { - - r = &g_array_index(ranges, GumMemoryRange, i); - gum_stalker_exclude(stalker, r); - - } - g_array_free(step4, TRUE); g_array_free(step3, TRUE); g_array_free(step2, TRUE); g_array_free(step1, TRUE); + /* *NEVER* stalk the stalker, only bad things will ever come of this! */ + ranges_exclude_self(); + } gboolean range_is_excluded(gpointer address) { @@ -572,3 +591,19 @@ gboolean range_is_excluded(gpointer address) { } +void ranges_exclude() { + + GumMemoryRange *r; + GumStalker * stalker = stalker_get(); + + OKF("Excluding ranges"); + + for (guint i = 0; i < ranges->len; i++) { + + r = &g_array_index(ranges, GumMemoryRange, i); + gum_stalker_exclude(stalker, r); + + } + +} + diff --git a/frida_mode/test/libpcap/GNUmakefile b/frida_mode/test/libpcap/GNUmakefile new file mode 100644 index 00000000..e30f2049 --- /dev/null +++ b/frida_mode/test/libpcap/GNUmakefile @@ -0,0 +1,188 @@ +PWD:=$(shell pwd)/ +ROOT:=$(shell realpath $(PWD)../../..)/ +BUILD_DIR:=$(PWD)build/ + +AFLPP_DRIVER_HOOK_SRC=$(PWD)aflpp_qemu_driver_hook.c +AFLPP_DRIVER_HOOK_OBJ=$(BUILD_DIR)aflpp_qemu_driver_hook.so + +LIBPCAP_BUILD_DIR:=$(BUILD_DIR)libpcap/ +HARNESS_BUILD_DIR:=$(BUILD_DIR)harness/ +PCAPTEST_BUILD_DIR:=$(BUILD_DIR)libpcaptest/ +TCPDUMP_BUILD_DIR:=$(BUILD_DIR)tcpdump/ + +LIBPCAP_PATCH_URL:=https://raw.githubusercontent.com/google/fuzzbench/master/benchmarks/libpcap_fuzz_both/patch.diff +LIBPCAP_PATCH_FILE:=$(LIBPCAP_BUILD_DIR)patch.diff +LIBPCAP_URL:=https://github.com/the-tcpdump-group/libpcap.git +LIBPCAP_DIR:=$(LIBPCAP_BUILD_DIR)libpcap/ +LIBPCAP_CMAKEFILE:=$(LIBPCAP_DIR)CMakeLists.txt +LIBPCAP_MAKEFILE:=$(LIBPCAP_DIR)Makefile +LIBPCAP_LIB:=$(LIBPCAP_DIR)libpcap.a + +HARNESS_FILE:=$(HARNESS_BUILD_DIR)StandaloneFuzzTargetMain.c +HARNESS_OBJ:=$(HARNESS_BUILD_DIR)StandaloneFuzzTargetMain.o +HARNESS_URL:="https://raw.githubusercontent.com/llvm/llvm-project/main/compiler-rt/lib/fuzzer/standalone/StandaloneFuzzTargetMain.c" + +PCAPTEST_SRC_DIR:=$(LIBPCAP_DIR)testprogs/fuzz/ +PCAPTEST_FILE:=$(PCAPTEST_SRC_DIR)fuzz_both.c +PCAPTEST_OBJ:=$(PCAPTEST_BUILD_DIR)fuzz_both.o + +TCPDUMP_URL:=https://github.com/the-tcpdump-group/tcpdump.git +TCPDUMP_TESTS_DIR:=$(TCPDUMP_BUILD_DIR)tests/ + +CFLAGS += -fpermissive + +LDFLAGS += -lpthread + +TEST_BIN:=$(BUILD_DIR)test +ifeq "$(shell uname)" "Darwin" +TEST_BIN_LDFLAGS:=-undefined dynamic_lookup +endif + +AFLPP_DRIVER_DUMMY_INPUT:=$(TCPDUMP_TESTS_DIR)in + +QEMU_OUT:=$(BUILD_DIR)qemu-out +FRIDA_OUT:=$(BUILD_DIR)frida-out + +ifndef ARCH + +ARCH=$(shell uname -m) +ifeq "$(ARCH)" "aarch64" + ARCH:=arm64 +endif + +ifeq "$(ARCH)" "i686" + ARCH:=x86 +endif +endif + +AFL_QEMU_PERSISTENT_ADDR=$(shell $(PWD)get_symbol_addr.py -f $(TEST_BIN) -s LLVMFuzzerTestOneInput -b 0x4000000000) + +ifeq "$(ARCH)" "aarch64" + AFL_FRIDA_PERSISTENT_ADDR=$(shell $(PWD)get_symbol_addr.py -f $(TEST_BIN) -s LLVMFuzzerTestOneInput -b 0x0000aaaaaaaaa000) +endif + +ifeq "$(ARCH)" "x86_64" + AFL_FRIDA_PERSISTENT_ADDR=$(shell $(PWD)get_symbol_addr.py -f $(TEST_BIN) -s LLVMFuzzerTestOneInput -b 0x0000555555554000) +endif + +ifeq "$(ARCH)" "x86" + AFL_FRIDA_PERSISTENT_ADDR=$(shell $(PWD)get_symbol_addr.py -f $(TEST_BIN) -s LLVMFuzzerTestOneInput -b 0x56555000) +endif + +.PHONY: all clean qemu frida hook + +all: $(TEST_BIN) + make -C $(ROOT)frida_mode/ + +32: + CXXFLAGS="-m32" LDFLAGS="-m32" ARCH="x86" make all + +$(BUILD_DIR): + mkdir -p $@ + +######### HARNESS ######## +$(HARNESS_BUILD_DIR): | $(BUILD_DIR) + mkdir -p $@ + +$(HARNESS_FILE): | $(HARNESS_BUILD_DIR) + wget -O $@ $(HARNESS_URL) + +$(HARNESS_OBJ): $(HARNESS_FILE) + $(CC) $(CXXFLAGS) $(LDFLAGS) -o $@ -c $< + +######### PCAPTEST ######## + +$(PCAPTEST_BUILD_DIR): | $(BUILD_DIR) + mkdir -p $@ + +$(PCAPTEST_FILE): | $(LIBPCAP_CMAKEFILE) + +$(PCAPTEST_OBJ): $(PCAPTEST_FILE) | $(PCAPTEST_BUILD_DIR) + $(CC) $(CFLAGS) $(LDFLAGS) -I $(LIBPCAP_DIR) -o $@ -c $< + +######### LIBPCAP ######## + +$(LIBPCAP_BUILD_DIR): | $(BUILD_DIR) + mkdir -p $@ + +$(LIBPCAP_PATCH_FILE): | $(LIBPCAP_BUILD_DIR) + wget -O $@ $(LIBPCAP_PATCH_URL) + +$(LIBPCAP_CMAKEFILE): $(LIBPCAP_PATCH_FILE) | $(LIBPCAP_BUILD_DIR) + git clone --depth 1 $(LIBPCAP_URL) $(LIBPCAP_DIR) + git apply $(LIBPCAP_PATCH_FILE) + +$(LIBPCAP_MAKEFILE): $(LIBPCAP_CMAKEFILE) + cd $(LIBPCAP_DIR) && cmake . + +$(LIBPCAP_LIB): $(LIBPCAP_MAKEFILE) $(LIBPCAP_PATCH_FILE) + make -C $(LIBPCAP_DIR) + +######## TCPDUMP ###### + +$(TCPDUMP_BUILD_DIR): | $(BUILD_DIR) + mkdir -p $@ + +$(TCPDUMP_TESTS_DIR): | $(TCPDUMP_BUILD_DIR) + git clone --depth=1 $(TCPDUMP_URL) $(TCPDUMP_BUILD_DIR) + +######### TEST ######## + +$(TEST_BIN): $(HARNESS_OBJ) $(PCAPTEST_OBJ) $(LIBPCAP_LIB) + $(CXX) \ + $(CFLAGS) \ + -o $@ \ + $(HARNESS_OBJ) $(PCAPTEST_OBJ) $(LIBPCAP_LIB) \ + -lz \ + $(LDFLAGS) \ + $(TEST_BIN_LDFLAGS) \ + +########## HOOK ######## + +$(AFLPP_DRIVER_HOOK_OBJ): $(AFLPP_DRIVER_HOOK_SRC) | $(BUILD_DIR) + $(CC) -shared $(CFLAGS) $(LDFLAGS) $< -o $@ + +########## DUMMY ####### + +$(AFLPP_DRIVER_DUMMY_INPUT): | $(TCPDUMP_TESTS_DIR) + truncate -s 1M $@ + +###### TEST DATA ####### + +hook: $(AFLPP_DRIVER_HOOK_OBJ) + +clean: + rm -rf $(BUILD_DIR) + +qemu: $(TEST_BIN) $(AFLPP_DRIVER_HOOK_OBJ) $(AFLPP_DRIVER_DUMMY_INPUT) | $(TCPDUMP_TESTS_DIR) + AFL_QEMU_PERSISTENT_HOOK=$(AFLPP_DRIVER_HOOK_OBJ) \ + AFL_ENTRYPOINT=$(AFL_QEMU_PERSISTENT_ADDR) \ + AFL_QEMU_PERSISTENT_ADDR=$(AFL_QEMU_PERSISTENT_ADDR) \ + AFL_QEMU_PERSISTENT_GPR=1 \ + $(ROOT)afl-fuzz \ + -D \ + -V 30 \ + -Q \ + -i $(TCPDUMP_TESTS_DIR) \ + -o $(QEMU_OUT) \ + -- \ + $(TEST_BIN) $(AFLPP_DRIVER_DUMMY_INPUT) + +frida: $(TEST_BIN) $(AFLPP_DRIVER_HOOK_OBJ) $(AFLPP_DRIVER_DUMMY_INPUT) | $(TCPDUMP_TESTS_DIR) + AFL_FRIDA_PERSISTENT_HOOK=$(AFLPP_DRIVER_HOOK_OBJ) \ + AFL_FRIDA_PERSISTENT_ADDR=$(AFL_FRIDA_PERSISTENT_ADDR) \ + AFL_ENTRYPOINT=$(AFL_FRIDA_PERSISTENT_ADDR) \ + $(ROOT)afl-fuzz \ + -D \ + -V 30 \ + -O \ + -i $(TCPDUMP_TESTS_DIR) \ + -o $(FRIDA_OUT) \ + -- \ + $(TEST_BIN) $(AFLPP_DRIVER_DUMMY_INPUT) + +debug: + gdb \ + --ex 'set environment LD_PRELOAD=$(ROOT)afl-frida-trace.so' \ + --ex 'set disassembly-flavor intel' \ + --args $(TEST_BIN) $(AFLPP_DRIVER_DUMMY_INPUT) diff --git a/frida_mode/test/libpcap/Makefile b/frida_mode/test/libpcap/Makefile new file mode 100644 index 00000000..31cacb67 --- /dev/null +++ b/frida_mode/test/libpcap/Makefile @@ -0,0 +1,1143 @@ +# CMAKE generated file: DO NOT EDIT! +# Generated by "Unix Makefiles" Generator, CMake Version 3.16 + +# Default target executed when no arguments are given to make. +default_target: all + +.PHONY : default_target + +# Allow only one 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sf-pcap.i" + @echo "... sf-pcap.s" + @echo "... sf-pcapng.o" + @echo "... sf-pcapng.i" + @echo "... sf-pcapng.s" +.PHONY : help + + + +#============================================================================= +# Special targets to cleanup operation of make. + +# Special rule to run CMake to check the build system integrity. +# No rule that depends on this can have commands that come from listfiles +# because they might be regenerated. +cmake_check_build_system: + $(CMAKE_COMMAND) -S$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 0 +.PHONY : cmake_check_build_system + diff --git a/frida_mode/test/libpcap/aflpp_qemu_driver_hook.c b/frida_mode/test/libpcap/aflpp_qemu_driver_hook.c new file mode 100644 index 00000000..059d438d --- /dev/null +++ b/frida_mode/test/libpcap/aflpp_qemu_driver_hook.c @@ -0,0 +1,97 @@ +#include <stdint.h> +#include <string.h> + +#if defined(__x86_64__) + +struct x86_64_regs { + + uint64_t rax, rbx, rcx, rdx, rdi, rsi, rbp, r8, r9, r10, r11, r12, r13, r14, + r15; + + union { + + uint64_t rip; + uint64_t pc; + + }; + + union { + + uint64_t rsp; + uint64_t sp; + + }; + + union { + + uint64_t rflags; + uint64_t flags; + + }; + + uint8_t zmm_regs[32][64]; + +}; + +void afl_persistent_hook(struct x86_64_regs *regs, uint64_t guest_base, + uint8_t *input_buf, uint32_t input_buf_len) { + + memcpy((void *)regs->rdi, input_buf, input_buf_len); + regs->rsi = input_buf_len; + +} + +#elif defined(__i386__) + +struct x86_regs { + + uint32_t eax, ebx, ecx, edx, edi, esi, ebp; + + union { + + uint32_t eip; + uint32_t pc; + + }; + + union { + + uint32_t esp; + uint32_t sp; + + }; + + union { + + uint32_t eflags; + uint32_t flags; + + }; + + uint8_t xmm_regs[8][16]; + +}; + +void afl_persistent_hook(struct x86_regs *regs, uint64_t guest_base, + uint8_t *input_buf, uint32_t input_buf_len) { + + void **esp = (void **)regs->esp; + void * arg1 = esp[1]; + void **arg2 = &esp[2]; + memcpy(arg1, input_buf, input_buf_len); + *arg2 = (void *)input_buf_len; + +} + +#else + #pragma error "Unsupported architecture" +#endif + +int afl_persistent_hook_init(void) { + + // 1 for shared memory input (faster), 0 for normal input (you have to use + // read(), input_buf will be NULL) + return 1; + +} + diff --git a/frida_mode/test/libpcap/get_symbol_addr.py b/frida_mode/test/libpcap/get_symbol_addr.py new file mode 100755 index 00000000..1c46e010 --- /dev/null +++ b/frida_mode/test/libpcap/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) diff --git a/frida_mode/test/re2/GNUmakefile b/frida_mode/test/re2/GNUmakefile new file mode 100644 index 00000000..9f0b31d3 --- /dev/null +++ b/frida_mode/test/re2/GNUmakefile @@ -0,0 +1,170 @@ +PWD:=$(shell pwd)/ +ROOT:=$(shell realpath $(PWD)../../..)/ +BUILD_DIR:=$(PWD)build/ + +AFLPP_DRIVER_HOOK_SRC=$(PWD)aflpp_qemu_driver_hook.c +AFLPP_DRIVER_HOOK_OBJ=$(BUILD_DIR)aflpp_qemu_driver_hook.so + +LIBRE2_BUILD_DIR:=$(BUILD_DIR)libre2/ +HARNESS_BUILD_DIR:=$(BUILD_DIR)harness/ +RE2TEST_BUILD_DIR:=$(BUILD_DIR)re2test/ + +LIBRE2_URL:=https://github.com/google/re2.git +LIBRE2_DIR:=$(LIBRE2_BUILD_DIR)libre2/ +LIBRE2_MAKEFILE:=$(LIBRE2_DIR)Makefile +LIBRE2_LIB:=$(LIBRE2_DIR)obj/libre2.a + +HARNESS_FILE:=$(HARNESS_BUILD_DIR)StandaloneFuzzTargetMain.c +HARNESS_OBJ:=$(HARNESS_BUILD_DIR)StandaloneFuzzTargetMain.o +HARNESS_URL:="https://raw.githubusercontent.com/llvm/llvm-project/main/compiler-rt/lib/fuzzer/standalone/StandaloneFuzzTargetMain.c" + +RE2TEST_FILE:=$(RE2TEST_BUILD_DIR)target.cc +RE2TEST_OBJ:=$(RE2TEST_BUILD_DIR)target.o +RE2TEST_URL:="https://raw.githubusercontent.com/google/fuzzbench/master/benchmarks/re2-2014-12-09/target.cc" + +LDFLAGS += -lpthread + +TEST_BIN:=$(BUILD_DIR)test +ifeq "$(shell uname)" "Darwin" +TEST_BIN_LDFLAGS:=-undefined dynamic_lookup +endif + +TEST_DATA_DIR:=$(BUILD_DIR)in/ +AFLPP_DRIVER_DUMMY_INPUT:=$(TEST_DATA_DIR)in + +QEMU_OUT:=$(BUILD_DIR)qemu-out +FRIDA_OUT:=$(BUILD_DIR)frida-out + +ifndef ARCH + +ARCH=$(shell uname -m) +ifeq "$(ARCH)" "aarch64" + ARCH:=arm64 +endif + +ifeq "$(ARCH)" "i686" + ARCH:=x86 +endif +endif + +AFL_QEMU_PERSISTENT_ADDR=$(shell $(PWD)get_symbol_addr.py -f $(TEST_BIN) -s LLVMFuzzerTestOneInput -b 0x4000000000) + +ifeq "$(ARCH)" "aarch64" + AFL_FRIDA_PERSISTENT_ADDR=$(shell $(PWD)get_symbol_addr.py -f $(TEST_BIN) -s LLVMFuzzerTestOneInput -b 0x0000aaaaaaaaa000) +endif + +ifeq "$(ARCH)" "x86_64" + AFL_FRIDA_PERSISTENT_ADDR=$(shell $(PWD)get_symbol_addr.py -f $(TEST_BIN) -s LLVMFuzzerTestOneInput -b 0x0000555555554000) +endif + +ifeq "$(ARCH)" "x86" + AFL_FRIDA_PERSISTENT_ADDR=$(shell $(PWD)get_symbol_addr.py -f $(TEST_BIN) -s LLVMFuzzerTestOneInput -b 0x56555000) +endif + +.PHONY: all clean qemu frida hook + +all: $(TEST_BIN) + make -C $(ROOT)frida_mode/ + +32: + CXXFLAGS="-m32" LDFLAGS="-m32" ARCH="x86" make all + +$(BUILD_DIR): + mkdir -p $@ + +######### HARNESS ######## +$(HARNESS_BUILD_DIR): | $(BUILD_DIR) + mkdir -p $@ + +$(HARNESS_FILE): | $(HARNESS_BUILD_DIR) + wget -O $@ $(HARNESS_URL) + +$(HARNESS_OBJ): $(HARNESS_FILE) + $(CC) $(CXXFLAGS) $(LDFLAGS) -o $@ -c $< + +######### RE2TEST ######## + +$(RE2TEST_BUILD_DIR): | $(BUILD_DIR) + mkdir -p $@ + +$(RE2TEST_FILE): | $(RE2TEST_BUILD_DIR) + wget -O $@ $(RE2TEST_URL) + +$(RE2TEST_OBJ): $(RE2TEST_FILE) | $(LIBRE2_MAKEFILE) + $(CXX) $(CXXFLAGS) $(LDFLAGS) -std=c++11 -I $(LIBRE2_DIR) -o $@ -c $< + +######### LIBRE2 ######## + +$(LIBRE2_BUILD_DIR): | $(BUILD_DIR) + mkdir -p $@ + +$(LIBRE2_MAKEFILE): $(LIBRE2_BUILD_DIR) + git clone https://github.com/google/re2.git $(LIBRE2_DIR) + cd $(LIBRE2_DIR) && git checkout 499ef7eff7455ce9c9fae86111d4a77b6ac335de + +$(LIBRE2_LIB): $(LIBRE2_MAKEFILE) + make -C $(LIBRE2_DIR) -j $(shell nproc) + +######### TEST ######## + +$(TEST_BIN): $(HARNESS_OBJ) $(RE2TEST_OBJ) $(LIBRE2_LIB) + $(CXX) \ + $(CFLAGS) \ + -o $@ \ + $(HARNESS_OBJ) $(RE2TEST_OBJ) $(LIBRE2_LIB) \ + -lz \ + $(LDFLAGS) \ + $(TEST_BIN_LDFLAGS) \ + +########## HOOK ######## + +$(AFLPP_DRIVER_HOOK_OBJ): $(AFLPP_DRIVER_HOOK_SRC) | $(BUILD_DIR) + $(CC) -shared $(CFLAGS) $(LDFLAGS) $< -o $@ + +########## DUMMY ####### + +$(TEST_DATA_DIR): | $(BUILD_DIR) + mkdir -p $@ + +$(AFLPP_DRIVER_DUMMY_INPUT): | $(TEST_DATA_DIR) + truncate -s 1M $@ + +###### TEST DATA ####### + +hook: $(AFLPP_DRIVER_HOOK_OBJ) + +clean: + rm -rf $(BUILD_DIR) + +qemu: $(TEST_BIN) $(AFLPP_DRIVER_HOOK_OBJ) $(AFLPP_DRIVER_DUMMY_INPUT) + AFL_QEMU_PERSISTENT_HOOK=$(AFLPP_DRIVER_HOOK_OBJ) \ + AFL_ENTRYPOINT=$(AFL_QEMU_PERSISTENT_ADDR) \ + AFL_QEMU_PERSISTENT_ADDR=$(AFL_QEMU_PERSISTENT_ADDR) \ + AFL_QEMU_PERSISTENT_GPR=1 \ + $(ROOT)afl-fuzz \ + -D \ + -V 30 \ + -Q \ + -i $(TEST_DATA_DIR) \ + -o $(QEMU_OUT) \ + -- \ + $(TEST_BIN) $(AFLPP_DRIVER_DUMMY_INPUT) + +frida: $(TEST_BIN) $(AFLPP_DRIVER_HOOK_OBJ) $(AFLPP_DRIVER_DUMMY_INPUT) + AFL_FRIDA_PERSISTENT_HOOK=$(AFLPP_DRIVER_HOOK_OBJ) \ + AFL_FRIDA_PERSISTENT_ADDR=$(AFL_FRIDA_PERSISTENT_ADDR) \ + AFL_ENTRYPOINT=$(AFL_FRIDA_PERSISTENT_ADDR) \ + $(ROOT)afl-fuzz \ + -D \ + -V 30 \ + -O \ + -i $(TEST_DATA_DIR) \ + -o $(FRIDA_OUT) \ + -- \ + $(TEST_BIN) $(AFLPP_DRIVER_DUMMY_INPUT) + +debug: + gdb \ + --ex 'set environment LD_PRELOAD=$(ROOT)afl-frida-trace.so' \ + --ex 'set disassembly-flavor intel' \ + --args $(TEST_BIN) $(TEST_DATA_DIR)basn0g01.re2 diff --git a/frida_mode/test/re2/Makefile b/frida_mode/test/re2/Makefile new file mode 100644 index 00000000..00b2b287 --- /dev/null +++ b/frida_mode/test/re2/Makefile @@ -0,0 +1,22 @@ +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 + +qemu: + @gmake qemu + +frida: + @gmake frida + +debug: + @gmake debug + +hook: + @gmake hook diff --git a/frida_mode/test/re2/aflpp_qemu_driver_hook.c b/frida_mode/test/re2/aflpp_qemu_driver_hook.c new file mode 100644 index 00000000..059d438d --- /dev/null +++ b/frida_mode/test/re2/aflpp_qemu_driver_hook.c @@ -0,0 +1,97 @@ +#include <stdint.h> +#include <string.h> + +#if defined(__x86_64__) + +struct x86_64_regs { + + uint64_t rax, rbx, rcx, rdx, rdi, rsi, rbp, r8, r9, r10, r11, r12, r13, r14, + r15; + + union { + + uint64_t rip; + uint64_t pc; + + }; + + union { + + uint64_t rsp; + uint64_t sp; + + }; + + union { + + uint64_t rflags; + uint64_t flags; + + }; + + uint8_t zmm_regs[32][64]; + +}; + +void afl_persistent_hook(struct x86_64_regs *regs, uint64_t guest_base, + uint8_t *input_buf, uint32_t input_buf_len) { + + memcpy((void *)regs->rdi, input_buf, input_buf_len); + regs->rsi = input_buf_len; + +} + +#elif defined(__i386__) + +struct x86_regs { + + uint32_t eax, ebx, ecx, edx, edi, esi, ebp; + + union { + + uint32_t eip; + uint32_t pc; + + }; + + union { + + uint32_t esp; + uint32_t sp; + + }; + + union { + + uint32_t eflags; + uint32_t flags; + + }; + + uint8_t xmm_regs[8][16]; + +}; + +void afl_persistent_hook(struct x86_regs *regs, uint64_t guest_base, + uint8_t *input_buf, uint32_t input_buf_len) { + + void **esp = (void **)regs->esp; + void * arg1 = esp[1]; + void **arg2 = &esp[2]; + memcpy(arg1, input_buf, input_buf_len); + *arg2 = (void *)input_buf_len; + +} + +#else + #pragma error "Unsupported architecture" +#endif + +int afl_persistent_hook_init(void) { + + // 1 for shared memory input (faster), 0 for normal input (you have to use + // read(), input_buf will be NULL) + return 1; + +} + diff --git a/frida_mode/test/re2/get_symbol_addr.py b/frida_mode/test/re2/get_symbol_addr.py new file mode 100755 index 00000000..1c46e010 --- /dev/null +++ b/frida_mode/test/re2/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) |