From 00dc8a0ad577fc9219b2d4999c32005a8fc5cc3a Mon Sep 17 00:00:00 2001 From: Dominik Maier Date: Thu, 25 Jul 2019 02:26:51 +0200 Subject: Added AFL-Unicorn mode --- unicorn_mode/samples/simple/COMPILE.md | 41 +++++ unicorn_mode/samples/simple/in/a | 1 + unicorn_mode/samples/simple/out/.cur_input | 1 + unicorn_mode/samples/simple/out/cmdline | 3 + unicorn_mode/samples/simple/out/fuzz_bitmap | 1 + unicorn_mode/samples/simple/out/fuzzer_stats | 28 ++++ unicorn_mode/samples/simple/out/plot_data | 7 + .../.state/deterministic_done/id:000000,orig:a | 0 .../samples/simple/out/queue/id:000000,orig:a | 1 + .../samples/simple/sample_inputs/sample1.bin | 1 + .../samples/simple/sample_inputs/sample2.bin | Bin 0 -> 1 bytes .../samples/simple/sample_inputs/sample3.bin | 1 + .../samples/simple/sample_inputs/sample4.bin | 1 + .../samples/simple/sample_inputs/sample5.bin | 1 + unicorn_mode/samples/simple/simple_target.bin | Bin 0 -> 256 bytes unicorn_mode/samples/simple/simple_target.c | 37 +++++ unicorn_mode/samples/simple/simple_test_harness.py | 170 +++++++++++++++++++++ 17 files changed, 294 insertions(+) create mode 100644 unicorn_mode/samples/simple/COMPILE.md create mode 100644 unicorn_mode/samples/simple/in/a create mode 100644 unicorn_mode/samples/simple/out/.cur_input create mode 100644 unicorn_mode/samples/simple/out/cmdline create mode 100644 unicorn_mode/samples/simple/out/fuzz_bitmap create mode 100644 unicorn_mode/samples/simple/out/fuzzer_stats create mode 100644 unicorn_mode/samples/simple/out/plot_data create mode 100644 unicorn_mode/samples/simple/out/queue/.state/deterministic_done/id:000000,orig:a create mode 100644 unicorn_mode/samples/simple/out/queue/id:000000,orig:a create mode 100644 unicorn_mode/samples/simple/sample_inputs/sample1.bin create mode 100644 unicorn_mode/samples/simple/sample_inputs/sample2.bin create mode 100644 unicorn_mode/samples/simple/sample_inputs/sample3.bin create mode 100644 unicorn_mode/samples/simple/sample_inputs/sample4.bin create mode 100644 unicorn_mode/samples/simple/sample_inputs/sample5.bin create mode 100644 unicorn_mode/samples/simple/simple_target.bin create mode 100644 unicorn_mode/samples/simple/simple_target.c create mode 100644 unicorn_mode/samples/simple/simple_test_harness.py (limited to 'unicorn_mode/samples') diff --git a/unicorn_mode/samples/simple/COMPILE.md b/unicorn_mode/samples/simple/COMPILE.md new file mode 100644 index 00000000..bd4a66c6 --- /dev/null +++ b/unicorn_mode/samples/simple/COMPILE.md @@ -0,0 +1,41 @@ +Compiling simple_target.c +========================== + +You shouldn't need to compile simple_target.c since a MIPS binary version is +pre-built and shipped with afl-unicorn. This file documents how the binary +was built in case you want to rebuild it or recompile it for any reason. + +The pre-built binary (simple_target.bin) was built by cross-compiling +simple_target.c for MIPS using the mips-linux-gnu-gcc package on an Ubuntu +16.04 LTS system. This cross compiler (and associated binutils) was installed +from apt-get packages: + +``` +sudo apt-get install gcc-mips-linux-gnu +``` + +simple_target.c was compiled without optimization, position-independent, +and without standard libraries using the following command line: + +``` +mips-linux-gnu-gcc -o simple_target.elf simple_target.c -fPIC -O0 -nostdlib +``` + +The .text section from the resulting ELF binary was then extracted to create +the raw binary blob that is loaded and emulated by simple_test_harness.py: + +``` +mips-linux-gnu-objcopy -O binary --only-section=.text simple_target.elf simple_target.bin +``` + +In summary, to recreate simple_taget.bin execute the following: + +``` +mips-linux-gnu-gcc -o simple_target.elf simple_target.c -fPIC -O0 -nostdlib + && mips-linux-gnu-objcopy -O binary --only-section=.text simple_target.elf simple_target.bin + && rm simple_target.elf +``` + +Note that the output of this is padded with nulls for 16-byte alignment. This is +important when emulating it, as NOPs will be added after the return of main() +as necessary. \ No newline at end of file diff --git a/unicorn_mode/samples/simple/in/a b/unicorn_mode/samples/simple/in/a new file mode 100644 index 00000000..78981922 --- /dev/null +++ b/unicorn_mode/samples/simple/in/a @@ -0,0 +1 @@ +a diff --git a/unicorn_mode/samples/simple/out/.cur_input b/unicorn_mode/samples/simple/out/.cur_input new file mode 100644 index 00000000..2e65efe2 --- /dev/null +++ b/unicorn_mode/samples/simple/out/.cur_input @@ -0,0 +1 @@ +a \ No newline at end of file diff --git a/unicorn_mode/samples/simple/out/cmdline b/unicorn_mode/samples/simple/out/cmdline new file mode 100644 index 00000000..69429f9f --- /dev/null +++ b/unicorn_mode/samples/simple/out/cmdline @@ -0,0 +1,3 @@ +python +../samples/simple/simple_test_harness.py +../samples/simple/sample_inputs diff --git a/unicorn_mode/samples/simple/out/fuzz_bitmap b/unicorn_mode/samples/simple/out/fuzz_bitmap new file mode 100644 index 00000000..6b9ee1f2 --- /dev/null +++ b/unicorn_mode/samples/simple/out/fuzz_bitmap @@ -0,0 +1 @@ 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ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ \ No newline at end of file diff --git a/unicorn_mode/samples/simple/out/fuzzer_stats b/unicorn_mode/samples/simple/out/fuzzer_stats new file mode 100644 index 00000000..6deca073 --- /dev/null +++ b/unicorn_mode/samples/simple/out/fuzzer_stats @@ -0,0 +1,28 @@ +start_time : 1563137991 +last_update : 1563155870 +fuzzer_pid : 16972 +cycles_done : 86 +execs_done : 4807 +execs_per_sec : 0.00 +paths_total : 1 +paths_favored : 1 +paths_found : 0 +paths_imported : 0 +max_depth : 1 +cur_path : 0 +pending_favs : 0 +pending_total : 0 +variable_paths : 0 +stability : 100.00% +bitmap_cvg : 0.00% +unique_crashes : 0 +unique_hangs : 0 +last_path : 0 +last_crash : 0 +last_hang : 0 +execs_since_crash : 4807 +exec_timeout : 9999999 +afl_banner : python +afl_version : 2.52b +target_mode : unicorn +command_line : /mnt/c/Users/DMaier/tmp/afl-unicorn/afl-fuzz -U -m none -t 9999999 -i ../samples/simple/in -o ../samples/simple/out -- python ../samples/simple/simple_test_harness.py ../samples/simple/sample_inputs diff --git a/unicorn_mode/samples/simple/out/plot_data b/unicorn_mode/samples/simple/out/plot_data new file mode 100644 index 00000000..8963aa8b --- /dev/null +++ b/unicorn_mode/samples/simple/out/plot_data @@ -0,0 +1,7 @@ +# unix_time, cycles_done, cur_path, paths_total, pending_total, pending_favs, map_size, unique_crashes, unique_hangs, max_depth, execs_per_sec +1563154187, 0, 0, 1, 1, 1, 0.00%, 0, 0, 1, inf +1563154197, 2, 0, 1, 0, 0, 0.00%, 0, 0, 1, 36.23 +1563154202, 9, 0, 1, 0, 0, 0.00%, 0, 0, 1, 32.83 +1563154207, 15, 0, 1, 0, 0, 0.00%, 0, 0, 1, 31.33 +1563154212, 22, 0, 1, 0, 0, 0.00%, 0, 0, 1, 31.05 +1563154217, 29, 0, 1, 0, 0, 0.00%, 0, 0, 1, 33.90 diff --git a/unicorn_mode/samples/simple/out/queue/.state/deterministic_done/id:000000,orig:a b/unicorn_mode/samples/simple/out/queue/.state/deterministic_done/id:000000,orig:a new file mode 100644 index 00000000..e69de29b diff --git a/unicorn_mode/samples/simple/out/queue/id:000000,orig:a b/unicorn_mode/samples/simple/out/queue/id:000000,orig:a new file mode 100644 index 00000000..78981922 --- /dev/null +++ b/unicorn_mode/samples/simple/out/queue/id:000000,orig:a @@ -0,0 +1 @@ +a diff --git a/unicorn_mode/samples/simple/sample_inputs/sample1.bin b/unicorn_mode/samples/simple/sample_inputs/sample1.bin new file mode 100644 index 00000000..85df5078 --- /dev/null +++ b/unicorn_mode/samples/simple/sample_inputs/sample1.bin @@ -0,0 +1 @@ +abcd \ No newline at end of file diff --git a/unicorn_mode/samples/simple/sample_inputs/sample2.bin b/unicorn_mode/samples/simple/sample_inputs/sample2.bin new file mode 100644 index 00000000..f76dd238 Binary files /dev/null and b/unicorn_mode/samples/simple/sample_inputs/sample2.bin differ diff --git a/unicorn_mode/samples/simple/sample_inputs/sample3.bin b/unicorn_mode/samples/simple/sample_inputs/sample3.bin new file mode 100644 index 00000000..6b2aaa76 --- /dev/null +++ b/unicorn_mode/samples/simple/sample_inputs/sample3.bin @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/unicorn_mode/samples/simple/sample_inputs/sample4.bin b/unicorn_mode/samples/simple/sample_inputs/sample4.bin new file mode 100644 index 00000000..71bd63e6 --- /dev/null +++ b/unicorn_mode/samples/simple/sample_inputs/sample4.bin @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/unicorn_mode/samples/simple/sample_inputs/sample5.bin b/unicorn_mode/samples/simple/sample_inputs/sample5.bin new file mode 100644 index 00000000..aed2973e --- /dev/null +++ b/unicorn_mode/samples/simple/sample_inputs/sample5.bin @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/unicorn_mode/samples/simple/simple_target.bin b/unicorn_mode/samples/simple/simple_target.bin new file mode 100644 index 00000000..0095eb6c Binary files /dev/null and b/unicorn_mode/samples/simple/simple_target.bin differ diff --git a/unicorn_mode/samples/simple/simple_target.c b/unicorn_mode/samples/simple/simple_target.c new file mode 100644 index 00000000..589d136c --- /dev/null +++ b/unicorn_mode/samples/simple/simple_target.c @@ -0,0 +1,37 @@ +/* + * Sample target file to test afl-unicorn fuzzing capabilities. + * This is a very trivial example that will crash pretty easily + * in several different exciting ways. + * + * Input is assumed to come from a buffer located at DATA_ADDRESS + * (0x00300000), so make sure that your Unicorn emulation of this + * puts user data there. + * + * Written by Nathan Voss + */ + +// Magic address where mutated data will be placed +#define DATA_ADDRESS 0x00300000 + +int main(void) +{ + unsigned char* data_buf = (unsigned char*)DATA_ADDRESS; + + if(data_buf[20] != 0) + { + // Cause an 'invalid read' crash if data[0..3] == '\x01\x02\x03\x04' + unsigned char invalid_read = *(unsigned char*)0x00000000; + } + else if(data_buf[0] > 0x10 && data_buf[0] < 0x20 && data_buf[1] > data_buf[2]) + { + // Cause an 'invalid read' crash if (0x10 < data[0] < 0x20) and data[1] > data[2] + unsigned char invalid_read = *(unsigned char*)0x00000000; + } + else if(data_buf[9] == 0x00 && data_buf[10] != 0x00 && data_buf[11] == 0x00) + { + // Cause a crash if data[10] is not zero, but [9] and [11] are zero + unsigned char invalid_read = *(unsigned char*)0x00000000; + } + + return 0; +} \ No newline at end of file diff --git a/unicorn_mode/samples/simple/simple_test_harness.py b/unicorn_mode/samples/simple/simple_test_harness.py new file mode 100644 index 00000000..8e102a42 --- /dev/null +++ b/unicorn_mode/samples/simple/simple_test_harness.py @@ -0,0 +1,170 @@ +""" + Simple test harness for AFL's Unicorn Mode. + + This loads the simple_target.bin binary (precompiled as MIPS code) into + Unicorn's memory map for emulation, places the specified input into + simple_target's buffer (hardcoded to be at 0x300000), and executes 'main()'. + If any crashes occur during emulation, this script throws a matching signal + to tell AFL that a crash occurred. + + Run under AFL as follows: + + $ cd /unicorn_mode/samples/simple/ + $ ../../../afl-fuzz -U -m none -i ./sample_inputs -o ./output -- python simple_test_harness.py @@ +""" + +import argparse +import os +import signal + +from unicorn import * +from unicorn.mips_const import * + +# Path to the file containing the binary to emulate +BINARY_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'simple_target.bin') + +# Memory map for the code to be tested +CODE_ADDRESS = 0x00100000 # Arbitrary address where code to test will be loaded +CODE_SIZE_MAX = 0x00010000 # Max size for the code (64kb) +STACK_ADDRESS = 0x00200000 # Address of the stack (arbitrarily chosen) +STACK_SIZE = 0x00010000 # Size of the stack (arbitrarily chosen) +DATA_ADDRESS = 0x00300000 # Address where mutated data will be placed +DATA_SIZE_MAX = 0x00010000 # Maximum allowable size of mutated data + +try: + # If Capstone is installed then we'll dump disassembly, otherwise just dump the binary. + from capstone import * + cs = Cs(CS_ARCH_MIPS, CS_MODE_MIPS32 + CS_MODE_BIG_ENDIAN) + def unicorn_debug_instruction(uc, address, size, user_data): + mem = uc.mem_read(address, size) + for (cs_address, cs_size, cs_mnemonic, cs_opstr) in cs.disasm_lite(bytes(mem), size): + print(" Instr: {:#016x}:\t{}\t{}".format(address, cs_mnemonic, cs_opstr)) +except ImportError: + def unicorn_debug_instruction(uc, address, size, user_data): + print(" Instr: addr=0x{0:016x}, size=0x{1:016x}".format(address, size)) + +def unicorn_debug_block(uc, address, size, user_data): + print("Basic Block: addr=0x{0:016x}, size=0x{1:016x}".format(address, size)) + +def unicorn_debug_mem_access(uc, access, address, size, value, user_data): + if access == UC_MEM_WRITE: + print(" >>> Write: addr=0x{0:016x} size={1} data=0x{2:016x}".format(address, size, value)) + else: + print(" >>> Read: addr=0x{0:016x} size={1}".format(address, size)) + +def unicorn_debug_mem_invalid_access(uc, access, address, size, value, user_data): + if access == UC_MEM_WRITE_UNMAPPED: + print(" >>> INVALID Write: addr=0x{0:016x} size={1} data=0x{2:016x}".format(address, size, value)) + else: + print(" >>> INVALID Read: addr=0x{0:016x} size={1}".format(address, size)) + +def force_crash(uc_error): + # This function should be called to indicate to AFL that a crash occurred during emulation. + # Pass in the exception received from Uc.emu_start() + mem_errors = [ + UC_ERR_READ_UNMAPPED, UC_ERR_READ_PROT, UC_ERR_READ_UNALIGNED, + UC_ERR_WRITE_UNMAPPED, UC_ERR_WRITE_PROT, UC_ERR_WRITE_UNALIGNED, + UC_ERR_FETCH_UNMAPPED, UC_ERR_FETCH_PROT, UC_ERR_FETCH_UNALIGNED, + ] + if uc_error.errno in mem_errors: + # Memory error - throw SIGSEGV + os.kill(os.getpid(), signal.SIGSEGV) + elif uc_error.errno == UC_ERR_INSN_INVALID: + # Invalid instruction - throw SIGILL + os.kill(os.getpid(), signal.SIGILL) + else: + # Not sure what happened - throw SIGABRT + os.kill(os.getpid(), signal.SIGABRT) + +def main(): + + parser = argparse.ArgumentParser(description="Test harness for simple_target.bin") + parser.add_argument('input_file', type=str, help="Path to the file containing the mutated input to load") + parser.add_argument('-d', '--debug', default=False, action="store_true", help="Enables debug tracing") + args = parser.parse_args() + + # Instantiate a MIPS32 big endian Unicorn Engine instance + uc = Uc(UC_ARCH_MIPS, UC_MODE_MIPS32 + UC_MODE_BIG_ENDIAN) + + if args.debug: + uc.hook_add(UC_HOOK_BLOCK, unicorn_debug_block) + uc.hook_add(UC_HOOK_CODE, unicorn_debug_instruction) + uc.hook_add(UC_HOOK_MEM_WRITE | UC_HOOK_MEM_READ, unicorn_debug_mem_access) + uc.hook_add(UC_HOOK_MEM_WRITE_UNMAPPED | UC_HOOK_MEM_READ_INVALID, unicorn_debug_mem_invalid_access) + + #--------------------------------------------------- + # Load the binary to emulate and map it into memory + + print("Loading data input from {}".format(args.input_file)) + binary_file = open(BINARY_FILE, 'rb') + binary_code = binary_file.read() + binary_file.close() + + # Apply constraints to the mutated input + if len(binary_code) > CODE_SIZE_MAX: + print("Binary code is too large (> {} bytes)".format(CODE_SIZE_MAX)) + return + + # Write the mutated command into the data buffer + uc.mem_map(CODE_ADDRESS, CODE_SIZE_MAX) + uc.mem_write(CODE_ADDRESS, binary_code) + + # Set the program counter to the start of the code + start_address = CODE_ADDRESS # Address of entry point of main() + end_address = CODE_ADDRESS + 0xf4 # Address of last instruction in main() + uc.reg_write(UC_MIPS_REG_PC, start_address) + + #----------------- + # Setup the stack + + uc.mem_map(STACK_ADDRESS, STACK_SIZE) + uc.reg_write(UC_MIPS_REG_SP, STACK_ADDRESS + STACK_SIZE) + + #----------------------------------------------------- + # Emulate 1 instruction to kick off AFL's fork server + # THIS MUST BE DONE BEFORE LOADING USER DATA! + # If this isn't done every single run, the AFL fork server + # will not be started appropriately and you'll get erratic results! + # It doesn't matter what this returns with, it just has to execute at + # least one instruction in order to get the fork server started. + + # Execute 1 instruction just to startup the forkserver + print("Starting the AFL forkserver by executing 1 instruction") + try: + uc.emu_start(uc.reg_read(UC_MIPS_REG_PC), 0, 0, count=1) + except UcError as e: + print("ERROR: Failed to execute a single instruction (error: {})!".format(e)) + return + + #----------------------------------------------- + # Load the mutated input and map it into memory + + # Load the mutated input from disk + print("Loading data input from {}".format(args.input_file)) + input_file = open(args.input_file, 'rb') + input = input_file.read() + input_file.close() + + # Apply constraints to the mutated input + if len(input) > DATA_SIZE_MAX: + print("Test input is too long (> {} bytes)".format(DATA_SIZE_MAX)) + return + + # Write the mutated command into the data buffer + uc.mem_map(DATA_ADDRESS, DATA_SIZE_MAX) + uc.mem_write(DATA_ADDRESS, input) + + #------------------------------------------------------------ + # Emulate the code, allowing it to process the mutated input + + print("Executing until a crash or execution reaches 0x{0:016x}".format(end_address)) + try: + result = uc.emu_start(uc.reg_read(UC_MIPS_REG_PC), end_address, timeout=0, count=0) + except UcError as e: + print("Execution failed with error: {}".format(e)) + force_crash(e) + + print("Done.") + +if __name__ == "__main__": + main() \ No newline at end of file -- cgit 1.4.1 From db2392b77872d47343cbedc032d642dc1d876563 Mon Sep 17 00:00:00 2001 From: van Hauser Date: Thu, 25 Jul 2019 18:48:28 +0200 Subject: cleanup --- unicorn_mode/helper_scripts/unicorn_dumper_ida.py | 2 +- unicorn_mode/samples/simple/in/a | 1 - unicorn_mode/samples/simple/out/.cur_input | 1 - unicorn_mode/samples/simple/out/cmdline | 3 -- unicorn_mode/samples/simple/out/fuzz_bitmap | 1 - unicorn_mode/samples/simple/out/fuzzer_stats | 28 ---------------- unicorn_mode/samples/simple/out/plot_data | 7 ---- .../.state/deterministic_done/id:000000,orig:a | 0 .../samples/simple/out/queue/id:000000,orig:a | 1 - unicorn_mode/samples/simple/simple_target.c | 38 +++++++++------------- unicorn_mode/samples/simple/simple_test_harness.py | 2 +- 11 files changed, 18 insertions(+), 66 deletions(-) delete mode 100644 unicorn_mode/samples/simple/in/a delete mode 100644 unicorn_mode/samples/simple/out/.cur_input delete mode 100644 unicorn_mode/samples/simple/out/cmdline delete mode 100644 unicorn_mode/samples/simple/out/fuzz_bitmap delete mode 100644 unicorn_mode/samples/simple/out/fuzzer_stats delete mode 100644 unicorn_mode/samples/simple/out/plot_data delete mode 100644 unicorn_mode/samples/simple/out/queue/.state/deterministic_done/id:000000,orig:a delete mode 100644 unicorn_mode/samples/simple/out/queue/id:000000,orig:a (limited to 'unicorn_mode/samples') diff --git a/unicorn_mode/helper_scripts/unicorn_dumper_ida.py b/unicorn_mode/helper_scripts/unicorn_dumper_ida.py index 3f955a5c..6cf9f30f 100644 --- a/unicorn_mode/helper_scripts/unicorn_dumper_ida.py +++ b/unicorn_mode/helper_scripts/unicorn_dumper_ida.py @@ -206,4 +206,4 @@ def main(): print("!!! ERROR:\n\t{}".format(str(e))) if __name__ == "__main__": - main() \ No newline at end of file + main() diff --git a/unicorn_mode/samples/simple/in/a b/unicorn_mode/samples/simple/in/a deleted file mode 100644 index 78981922..00000000 --- a/unicorn_mode/samples/simple/in/a +++ /dev/null @@ -1 +0,0 @@ -a diff --git a/unicorn_mode/samples/simple/out/.cur_input b/unicorn_mode/samples/simple/out/.cur_input deleted file mode 100644 index 2e65efe2..00000000 --- a/unicorn_mode/samples/simple/out/.cur_input +++ /dev/null @@ -1 +0,0 @@ -a \ No newline at end of file diff --git a/unicorn_mode/samples/simple/out/cmdline b/unicorn_mode/samples/simple/out/cmdline deleted file mode 100644 index 69429f9f..00000000 --- a/unicorn_mode/samples/simple/out/cmdline +++ /dev/null @@ -1,3 +0,0 @@ -python -../samples/simple/simple_test_harness.py -../samples/simple/sample_inputs diff --git a/unicorn_mode/samples/simple/out/fuzz_bitmap b/unicorn_mode/samples/simple/out/fuzz_bitmap deleted file mode 100644 index 6b9ee1f2..00000000 --- a/unicorn_mode/samples/simple/out/fuzz_bitmap +++ /dev/null @@ -1 +0,0 @@ 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ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ \ No newline at end of file diff --git a/unicorn_mode/samples/simple/out/fuzzer_stats b/unicorn_mode/samples/simple/out/fuzzer_stats deleted file mode 100644 index 6deca073..00000000 --- a/unicorn_mode/samples/simple/out/fuzzer_stats +++ /dev/null @@ -1,28 +0,0 @@ -start_time : 1563137991 -last_update : 1563155870 -fuzzer_pid : 16972 -cycles_done : 86 -execs_done : 4807 -execs_per_sec : 0.00 -paths_total : 1 -paths_favored : 1 -paths_found : 0 -paths_imported : 0 -max_depth : 1 -cur_path : 0 -pending_favs : 0 -pending_total : 0 -variable_paths : 0 -stability : 100.00% -bitmap_cvg : 0.00% -unique_crashes : 0 -unique_hangs : 0 -last_path : 0 -last_crash : 0 -last_hang : 0 -execs_since_crash : 4807 -exec_timeout : 9999999 -afl_banner : python -afl_version : 2.52b -target_mode : unicorn -command_line : /mnt/c/Users/DMaier/tmp/afl-unicorn/afl-fuzz -U -m none -t 9999999 -i ../samples/simple/in -o ../samples/simple/out -- python ../samples/simple/simple_test_harness.py ../samples/simple/sample_inputs diff --git a/unicorn_mode/samples/simple/out/plot_data b/unicorn_mode/samples/simple/out/plot_data deleted file mode 100644 index 8963aa8b..00000000 --- a/unicorn_mode/samples/simple/out/plot_data +++ /dev/null @@ -1,7 +0,0 @@ -# unix_time, cycles_done, cur_path, paths_total, pending_total, pending_favs, map_size, unique_crashes, unique_hangs, max_depth, execs_per_sec -1563154187, 0, 0, 1, 1, 1, 0.00%, 0, 0, 1, inf -1563154197, 2, 0, 1, 0, 0, 0.00%, 0, 0, 1, 36.23 -1563154202, 9, 0, 1, 0, 0, 0.00%, 0, 0, 1, 32.83 -1563154207, 15, 0, 1, 0, 0, 0.00%, 0, 0, 1, 31.33 -1563154212, 22, 0, 1, 0, 0, 0.00%, 0, 0, 1, 31.05 -1563154217, 29, 0, 1, 0, 0, 0.00%, 0, 0, 1, 33.90 diff --git a/unicorn_mode/samples/simple/out/queue/.state/deterministic_done/id:000000,orig:a b/unicorn_mode/samples/simple/out/queue/.state/deterministic_done/id:000000,orig:a deleted file mode 100644 index e69de29b..00000000 diff --git a/unicorn_mode/samples/simple/out/queue/id:000000,orig:a b/unicorn_mode/samples/simple/out/queue/id:000000,orig:a deleted file mode 100644 index 78981922..00000000 --- a/unicorn_mode/samples/simple/out/queue/id:000000,orig:a +++ /dev/null @@ -1 +0,0 @@ -a diff --git a/unicorn_mode/samples/simple/simple_target.c b/unicorn_mode/samples/simple/simple_target.c index 589d136c..49e1b4d8 100644 --- a/unicorn_mode/samples/simple/simple_target.c +++ b/unicorn_mode/samples/simple/simple_target.c @@ -11,27 +11,21 @@ */ // Magic address where mutated data will be placed -#define DATA_ADDRESS 0x00300000 +#define DATA_ADDRESS 0x00300000 -int main(void) -{ - unsigned char* data_buf = (unsigned char*)DATA_ADDRESS; +int main(void) { + unsigned char *data_buf = (unsigned char *) DATA_ADDRESS; - if(data_buf[20] != 0) - { - // Cause an 'invalid read' crash if data[0..3] == '\x01\x02\x03\x04' - unsigned char invalid_read = *(unsigned char*)0x00000000; - } - else if(data_buf[0] > 0x10 && data_buf[0] < 0x20 && data_buf[1] > data_buf[2]) - { - // Cause an 'invalid read' crash if (0x10 < data[0] < 0x20) and data[1] > data[2] - unsigned char invalid_read = *(unsigned char*)0x00000000; - } - else if(data_buf[9] == 0x00 && data_buf[10] != 0x00 && data_buf[11] == 0x00) - { - // Cause a crash if data[10] is not zero, but [9] and [11] are zero - unsigned char invalid_read = *(unsigned char*)0x00000000; - } - - return 0; -} \ No newline at end of file + if (data_buf[20] != 0) { + // Cause an 'invalid read' crash if data[0..3] == '\x01\x02\x03\x04' + unsigned char invalid_read = *(unsigned char *) 0x00000000; + } else if (data_buf[0] > 0x10 && data_buf[0] < 0x20 && data_buf[1] > data_buf[2]) { + // Cause an 'invalid read' crash if (0x10 < data[0] < 0x20) and data[1] > data[2] + unsigned char invalid_read = *(unsigned char *) 0x00000000; + } else if (data_buf[9] == 0x00 && data_buf[10] != 0x00 && data_buf[11] == 0x00) { + // Cause a crash if data[10] is not zero, but [9] and [11] are zero + unsigned char invalid_read = *(unsigned char *) 0x00000000; + } + + return 0; +} diff --git a/unicorn_mode/samples/simple/simple_test_harness.py b/unicorn_mode/samples/simple/simple_test_harness.py index 8e102a42..6d0fb399 100644 --- a/unicorn_mode/samples/simple/simple_test_harness.py +++ b/unicorn_mode/samples/simple/simple_test_harness.py @@ -167,4 +167,4 @@ def main(): print("Done.") if __name__ == "__main__": - main() \ No newline at end of file + main() -- cgit 1.4.1