Skip to content

Commit

Permalink
Add test to validate match-2-yar feature extraction
Browse files Browse the repository at this point in the history
  • Loading branch information
@jconnor0426
jconnor0426 committed Aug 22, 2023
1 parent a49c562 commit a1db2b9
Show file tree
Hide file tree
Showing 2 changed files with 127 additions and 9 deletions.
48 changes: 39 additions & 9 deletions scripts/match-2-yar.py
View file
Original file line number Diff line number Diff line change
Expand Up @@ -30,12 +30,14 @@
"""
import os
import sys
import json
import logging
import argparse
import binascii
import collections
import multiprocessing
import multiprocessing.pool
from typing import Set, Dict, List
from typing import Set, Dict, List, Union
from pathlib import Path
from datetime import date

Expand Down Expand Up @@ -323,7 +325,7 @@ def get_sig_and_mask_for_dotnet_func(dnpe, body):

comment = ""
sig = ""
func_bytes = ""
func_bytes = b""
for insn in body.instructions:
comment += (
"{:04X}".format(insn.offset)
Expand All @@ -335,11 +337,11 @@ def get_sig_and_mask_for_dotnet_func(dnpe, body):
)

sig += insn.get_opcode_bytes().hex()
func_bytes += insn.get_opcode_bytes().hex()
func_bytes += insn.get_opcode_bytes()

if insn.operand:
sig += "??" * len(insn.get_operand_bytes())
func_bytes += insn.get_operand_bytes().hex()
func_bytes += insn.get_operand_bytes()

# Format the sig to be in the same style as the vivi portion (bytes seperated by spaces)
formatted_sig = ""
Expand All @@ -357,11 +359,25 @@ def get_sig_and_mask_for_dotnet_func(dnpe, body):
class CodeFeature:
"""Basic object that that will be used to create yara rules"""

def __init__(self, sig: str, comment: str, bytez: bytes, filemd5: str):
self.sig = sig
def __init__(
self, sig: str, comment: str, bytez: bytes, filemd5: str, addr: Union[int, tuple[int, int], None], scope: str
):
self.sig = sig.strip().upper()
self.comment = comment
self.bytez = bytez
self.addr = addr
self.filemd5 = filemd5
self.scope = scope

def json(self):
return {
"sig": self.sig,
"comment": self.comment,
"bytez": binascii.hexlify(self.bytez, " ", bytes_per_sep=1).decode("utf8").upper(),
"addr": self.addr,
"filemd5": self.filemd5,
"scope": self.scope,
}


def get_code_features_for_capa_doc(doc: rd.ResultDocument, extractor):
Expand Down Expand Up @@ -411,7 +427,7 @@ def get_code_features_for_capa_doc(doc: rd.ResultDocument, extractor):

bytez = get_cb_bytes(file_vw, addr)
sig = genSigAndMask(addr, bytez, doc.meta.analysis.arch)
code_features.append(CodeFeature(sig, comment, bytez, filemd5))
code_features.append(CodeFeature(sig, comment, bytez, filemd5, addr, capa.rules.BASIC_BLOCK_SCOPE))

for addr, rules in func_matches.items():
comment = f"function at 0x{addr:08x}@{filemd5} with {len(rules)} features:\n"
Expand All @@ -421,7 +437,7 @@ def get_code_features_for_capa_doc(doc: rd.ResultDocument, extractor):

bytez = get_function_bytes(file_vw, addr)
sig = genSigAndMask(addr, bytez, doc.meta.analysis.arch)
code_features.append(CodeFeature(sig, comment, bytez, filemd5))
code_features.append(CodeFeature(sig, comment, bytez, filemd5, addr, capa.rules.FUNCTION_SCOPE))

if len(code_features) == 0:
logger.warning("No code features found for %s", filemd5)
Expand Down Expand Up @@ -479,7 +495,7 @@ def get_code_features_for_dotnet_doc(doc: rd.ResultDocument, extractor):
func_comment, sig, bytez = get_sig_and_mask_for_dotnet_func(dnpe, f.inner)
comment += func_comment

code_features.append(CodeFeature(sig, comment, bytez, filemd5))
code_features.append(CodeFeature(sig, comment, bytez, filemd5, addr, capa.rules.FUNCTION_SCOPE))

if len(code_features) == 0:
logger.warning("No code features found for %s", filemd5)
Expand Down Expand Up @@ -596,6 +612,7 @@ def multi_process_capa(argv=None):
parser.add_argument("input", type=str, nargs="+", help="Path to directory or files to analyze")
parser.add_argument("-n", "--parallelism", type=int, default=multiprocessing.cpu_count(), help="parallelism factor")
parser.add_argument("--no-mp", action="store_true", help="disable subprocesses")
parser.add_argument("--dump-features", action="store_true", help="output feature dictionary as json")
args = parser.parse_args(args=argv)
capa.main.handle_common_args(args)

Expand Down Expand Up @@ -665,9 +682,22 @@ def map(f, args, parallelism=None):

logger.info("Done processing %s samples", len(samples))

if args.dump_features:
dump_file_features(results)
sys.exit(0)

return results


# Output related functions


def dump_file_features(result_dict: dict):
"""Print out bytes for the code features extracted"""
output_dict = {filemd5: [x.json() for x in features] for filemd5, features in result_dict.items()}
print(json.dumps(output_dict, indent=4))


# YARA related functions

CODE_FEATURES_REFERENCED: List[CodeFeature] = []
Expand Down
88 changes: 88 additions & 0 deletions tests/test_scripts.py
View file
Original file line number Diff line number Diff line change
Expand Up @@ -7,14 +7,18 @@
# See the License for the specific language governing permissions and limitations under the License.

import sys
import json
import logging
import textwrap
import subprocess
from pathlib import Path
from datetime import date
from functools import lru_cache

import pytest

import capa.rules

logger = logging.getLogger(__name__)

CD = Path(__file__).resolve().parent
Expand Down Expand Up @@ -153,6 +157,16 @@ def run_program(script_path, args):
return subprocess.run(args, stdout=subprocess.PIPE)


@lru_cache(maxsize=1)
def get_match_2_yar_features(path, is_dotnet):
script_path = get_script_path("match-2-yar.py")
args = ["--dump-features", path]
if is_dotnet:
args.extend(["-f", "dotnet"])
p = run_program(script_path, args)
return p.stdout


def test_proto_conversion(tmp_path):
t = tmp_path / "proto-test"
t.mkdir()
Expand Down Expand Up @@ -283,3 +297,77 @@ def test_detect_duplicate_features(tmpdir):
# Use importlib to import the script
# Use fixtures vivisect to get a vivisect workspace for a given path
# We can use known functions from the yara matches to extract out length, bytes, and masked sig
@pytest.mark.parametrize(
"path,is_dotnet,filemd5,addr,scope,expected_bytestring,expected_sig",
[
# Test match-2-yar x86 EXE - Basic Block Extraction
pytest.param(
get_data_path("9324d1a8ae37a36ae560c37448c9705a.exe_"),
False,
"9324d1a8ae37a36ae560c37448c9705a",
0x004031A0,
capa.rules.BASIC_BLOCK_SCOPE,
"83 EC 10 B0 6C 8B 15 24 A0 40 00 88 44 24 01 88 44 24 02 B0 6F 8D 4C 24 00 88 44 24 04 88 44 24 0B 8B 44 24 14 C6 44 24 00 44 50 51 52 6A 00 C6 44 24 13 53 C6 44 24 15 72 C6 44 24 16 74 C6 44 24 17 57 C6 44 24 18 69 C6 44 24 19 6E C6 44 24 1A 64 C6 44 24 1C 77 C6 44 24 1D 00 E8 EF F7 FF FF A3 C4 A9 40 00 33 C0 83 C4 20 C2 04 00",
"83 EC 10 B0 6C 8B 15 ?? ?? ?? ?? 88 44 24 ?? 88 44 24 ?? B0 6F 8D 4C 24 ?? 88 44 24 ?? 88 44 24 ?? 8B 44 24 ?? C6 44 24 ?? 44 50 51 52 6A 00 C6 44 24 ?? 53 C6 44 24 ?? 72 C6 44 24 ?? 74 C6 44 24 ?? 57 C6 44 24 ?? 69 C6 44 24 ?? 6E C6 44 24 ?? 64 C6 44 24 ?? 77 C6 44 24 ?? 00 E8 ?? ?? ?? ?? A3 ?? ?? ?? ?? 33 C0 83 C4 20 C2 04 00",
),
# Test match-2-yar x86 EXE - Function Extraction
pytest.param(
get_data_path("9324d1a8ae37a36ae560c37448c9705a.exe_"),
False,
"9324d1a8ae37a36ae560c37448c9705a",
0x004019C0,
capa.rules.FUNCTION_SCOPE,
"81 EC 7C 04 00 00 53 55 8B 2D 14 92 40 00 56 8B F1 57 6A 00 8D 44 24 14 8B 8E A8 00 00 00 6A 04 B3 02 50 51 C7 44 24 28 03 00 00 00 C7 44 24 2C 00 00 00 00 C6 44 24 20 05 88 5C 24 21 C6 44 24 22 00 88 5C 24 23 FF D5 B9 96 00 00 00 33 C0 8D BC 24 34 02 00 00 8B 96 A8 00 00 00 F3 AB 8D 44 24 18 8D 4C 24 2C 50 6A 00 6A 00 51 6A 00 89 54 24 44 C7 44 24 40 01 00 00 00 FF 15 10 92 40 00 85 C0 7F 0C 8B 96 A8 00 00 00 52 E9 5D 02 00 00 8B 8E A8 00 00 00 6A 00 8D 84 24 38 02 00 00 68 58 02 00 00 50 51 FF 15 0C 92 40 00 80 BC 24 34 02 00 00 05 0F 85 2C 02 00 00 8A 84 24 35 02 00 00 84 C0 74 0A 3A C3 0F 85 19 02 00 00 EB 08 3A C3 0F 85 30 01 00 00 8B 0D D4 AA 40 00 68 A0 A5 40 00 E8 49 2C 00 00 85 C0 0F 86 18 01 00 00 8B 0D D4 AA 40 00 68 A0 A5 40 00 E8 31 2C 00 00 8B 0D D4 AA 40 00 68 A0 A6 40 00 8B D8 E8 1F 2C 00 00 89 44 24 14 B9 40 00 00 00 33 C0 8D BC 24 30 01 00 00 F3 AB 66 AB 8B 3D 94 90 40 00 8D 94 24 32 01 00 00 68 A0 A5 40 00 52 C6 84 24 38 01 00 00 05 88 9C 24 39 01 00 00 FF D7 8D 44 24 14 6A 04 8D 8C 1C 36 01 00 00 50 51 8B 0D D4 AA 40 00 E8 3B 2A 00 00 8D 94 1C 33 01 00 00 68 A0 A6 40 00 52 FF D7 8B 44 24 14 6A 00 8D 94 24 34 01 00 00 8D 4C 18 03 8B 86 A8 00 00 00 51 52 50 FF D5 8D 54 24 18 33 C0 B9 96 00 00 00 8D BC 24 34 02 00 00 52 50 F3 AB 8B 8E A8 00 00 00 50 8D 44 24 38 89 4C 24 3C 50 6A 00 C7 44 24 40 01 00 00 00 FF 15 10 92 40 00 85 C0 0F 8E 18 01 00 00 8B 86 A8 00 00 00 6A 00 8D 94 24 38 02 00 00 68 58 02 00 00 52 50 FF 15 0C 92 40 00 80 BC 24 34 02 00 00 05 0F 85 EE 00 00 00 8A 84 24 35 02 00 00 84 C0 0F 85 DF 00 00 00 8B 94 24 90 04 00 00 52 FF 15 FC 91 40 00 85 C0 0F 84 D6 00 00 00 C6 44 24 20 05 C6 44 24 21 01 C6 44 24 22 00 C6 44 24 23 01 8B 40 0C 8B 08 8B 84 24 94 04 00 00 50 8B 11 89 54 24 28 FF 15 08 92 40 00 8B 96 A8 00 00 00 6A 00 8D 4C 24 24 6A 0A 51 52 66 89 44 24 38 FF D5 B9 96 00 00 00 33 C0 8D BC 24 34 02 00 00 8D 54 24 2C F3 AB 8B 86 A8 00 00 00 8D 4C 24 18 51 6A 00 6A 00 52 6A 00 89 44 24 44 C7 44 24 40 01 00 00 00 FF 15 10 92 40 00 85 C0 7F 09 8B 86 A8 00 00 00 50 EB 47 8B 96 A8 00 00 00 6A 00 8D 8C 24 38 02 00 00 68 58 02 00 00 51 52 FF 15 0C 92 40 00 80 BC 24 34 02 00 00 05 75 D1 8A 84 24 35 02 00 00 84 C0 75 C6 5F 5E 5D B0 01 5B 81 C4 7C 04 00 00 C2 08 00 8B 8E A8 00 00 00 51 FF 15 04 92 40 00 5F 5E 5D 32 C0 5B 81 C4 7C 04 00 00 C2 08 00",
"81 EC 7C 04 00 00 53 55 8B 2D ?? ?? ?? ?? 56 8B F1 57 6A 00 8D 44 24 ?? 8B 8E ?? ?? ?? ?? 6A 04 B3 02 50 51 C7 44 24 ?? 03 00 00 00 C7 44 24 ?? 00 00 00 00 C6 44 24 ?? 05 88 5C 24 ?? C6 44 24 ?? 00 88 5C 24 ?? FF D5 B9 96 00 00 00 33 C0 8D BC 24 ?? ?? ?? ?? 8B 96 ?? ?? ?? ?? F3 AB 8D 44 24 ?? 8D 4C 24 ?? 50 6A 00 6A 00 51 6A 00 89 54 24 ?? C7 44 24 ?? 01 00 00 00 FF 15 ?? ?? ?? ?? 85 C0 7F ?? 8B 96 ?? ?? ?? ?? 52 E9 ?? ?? ?? ?? 8B 8E ?? ?? ?? ?? 6A 00 8D 84 24 ?? ?? ?? ?? 68 58 02 00 00 50 51 FF 15 ?? ?? ?? ?? 80 BC 24 ?? ?? ?? ?? 05 0F 85 ?? ?? ?? ?? 8A 84 24 ?? ?? ?? ?? 84 C0 74 ?? 3A C3 0F 85 ?? ?? ?? ?? EB ?? 3A C3 0F 85 ?? ?? ?? ?? 8B 0D ?? ?? ?? ?? 68 A0 A5 40 00 E8 ?? ?? ?? ?? 85 C0 0F 86 ?? ?? ?? ?? 8B 0D ?? ?? ?? ?? 68 A0 A5 40 00 E8 ?? ?? ?? ?? 8B 0D ?? ?? ?? ?? 68 A0 A6 40 00 8B D8 E8 ?? ?? ?? ?? 89 44 24 ?? B9 40 00 00 00 33 C0 8D BC 24 ?? ?? ?? ?? F3 AB 66 AB 8B 3D ?? ?? ?? ?? 8D 94 24 ?? ?? ?? ?? 68 A0 A5 40 00 52 C6 84 24 ?? ?? ?? ?? 05 88 9C 24 ?? ?? ?? ?? FF D7 8D 44 24 ?? 6A 04 8D 8C 1C ?? ?? ?? ?? 50 51 8B 0D ?? ?? ?? ?? E8 ?? ?? ?? ?? 8D 94 1C ?? ?? ?? ?? 68 A0 A6 40 00 52 FF D7 8B 44 24 ?? 6A 00 8D 94 24 ?? ?? ?? ?? 8D 4C 18 ?? 8B 86 ?? ?? ?? ?? 51 52 50 FF D5 8D 54 24 ?? 33 C0 B9 96 00 00 00 8D BC 24 ?? ?? ?? ?? 52 50 F3 AB 8B 8E ?? ?? ?? ?? 50 8D 44 24 ?? 89 4C 24 ?? 50 6A 00 C7 44 24 ?? 01 00 00 00 FF 15 ?? ?? ?? ?? 85 C0 0F 8E ?? ?? ?? ?? 8B 86 ?? ?? ?? ?? 6A 00 8D 94 24 ?? ?? ?? ?? 68 58 02 00 00 52 50 FF 15 ?? ?? ?? ?? 80 BC 24 ?? ?? ?? ?? 05 0F 85 ?? ?? ?? ?? 8A 84 24 ?? ?? ?? ?? 84 C0 0F 85 ?? ?? ?? ?? 8B 94 24 ?? ?? ?? ?? 52 FF 15 ?? ?? ?? ?? 85 C0 0F 84 ?? ?? ?? ?? C6 44 24 ?? 05 C6 44 24 ?? 01 C6 44 24 ?? 00 C6 44 24 ?? 01 8B 40 ?? 8B 08 8B 84 24 ?? ?? ?? ?? 50 8B 11 89 54 24 ?? FF 15 ?? ?? ?? ?? 8B 96 ?? ?? ?? ?? 6A 00 8D 4C 24 ?? 6A 0A 51 52 66 89 44 24 ?? FF D5 B9 96 00 00 00 33 C0 8D BC 24 ?? ?? ?? ?? 8D 54 24 ?? F3 AB 8B 86 ?? ?? ?? ?? 8D 4C 24 ?? 51 6A 00 6A 00 52 6A 00 89 44 24 ?? C7 44 24 ?? 01 00 00 00 FF 15 ?? ?? ?? ?? 85 C0 7F ?? 8B 86 ?? ?? ?? ?? 50 EB ?? 8B 96 ?? ?? ?? ?? 6A 00 8D 8C 24 ?? ?? ?? ?? 68 58 02 00 00 51 52 FF 15 ?? ?? ?? ?? 80 BC 24 ?? ?? ?? ?? 05 75 ?? 8A 84 24 ?? ?? ?? ?? 84 C0 75 ?? 5F 5E 5D B0 01 5B 81 C4 7C 04 00 00 C2 08 00 8B 8E ?? ?? ?? ?? 51 FF 15 ?? ?? ?? ?? 5F 5E 5D 32 C0 5B 81 C4 7C 04 00 00 C2 08 00",
),
# Test match-2-yar x64 EXE - Basic Block Extraction
pytest.param(
get_data_path("c2bb17c12975ea61ff43a71afd9c3ff111d018af161859abae0bdb0b3dae98f9.exe_"),
False,
"50580ef0b882905316c4569162ea07d9",
0x14000109F,
capa.rules.BASIC_BLOCK_SCOPE,
"33 C9 BA 1F 03 00 00 41 B8 00 10 00 00 44 8D 49 40 FF 15 4A 0F 00 00 41 B8 1F 03 00 00 48 8B D7 48 8B C8 48 8B D8 E8 65 0D 00 00 48 8D 0D 7F 11 00 00 C7 44 24 20 20 00 00 00 C7 44 24 24 01 00 00 00 48 C7 44 24 28 00 00 00 00 48 89 5C 24 30 48 C7 44 24 38 00 00 00 00 FF 15 0A 0F 00 00 4C 8D 44 24 20 48 8D 15 46 11 00 00 48 8D 0D 77 11 00 00 FF 15 F9 0E 00 00 33 C0 48 8B 4C 24 40 48 33 CC E8 2A 00 00 00 48 8B 5C 24 60 48 83 C4 50 5F C3",
"33 C9 BA 1F 03 00 00 41 B8 00 10 00 00 44 8D 49 ?? FF 15 ?? ?? ?? ?? 41 B8 1F 03 00 00 48 8B D7 48 8B C8 48 8B D8 E8 ?? ?? ?? ?? 48 8D 0D ?? ?? ?? ?? C7 44 24 ?? 20 00 00 00 C7 44 24 ?? 01 00 00 00 48 C7 44 24 ?? 00 00 00 00 48 89 5C 24 ?? 48 C7 44 24 ?? 00 00 00 00 FF 15 ?? ?? ?? ?? 4C 8D 44 24 ?? 48 8D 15 ?? ?? ?? ?? 48 8D 0D ?? ?? ?? ?? FF 15 ?? ?? ?? ?? 33 C0 48 8B 4C 24 ?? 48 33 CC E8 ?? ?? ?? ?? 48 8B 5C 24 ?? 48 83 C4 50 5F C3",
),
# Test match-2-yar x64 EXE - Function Extraction
pytest.param(
get_data_path("c2bb17c12975ea61ff43a71afd9c3ff111d018af161859abae0bdb0b3dae98f9.exe_"),
False,
"50580ef0b882905316c4569162ea07d9",
0x140001010,
capa.rules.FUNCTION_SCOPE,
"48 89 5C 24 08 57 48 83 EC 50 48 8B 05 DF 1F 00 00 48 33 C4 48 89 44 24 40 66 0F 6F 15 8F 12 00 00 48 8D 3D 08 20 00 00 33 C9 B8 00 03 00 00 90 F3 0F 6F 04 39 66 0F EF C2 F3 0F 7F 04 39 F3 0F 6F 4C 39 10 66 0F EF CA F3 0F 7F 4C 39 10 F3 0F 6F 44 39 20 66 0F EF C2 F3 0F 7F 44 39 20 F3 0F 6F 44 39 30 66 0F EF C2 F3 0F 7F 44 39 30 48 83 C1 40 48 3B C8 7C B9 66 0F 1F 84 00 00 00 00 00 80 34 38 62 48 FF C0 48 3D 1F 03 00 00 7C F1 33 C9 BA 1F 03 00 00 41 B8 00 10 00 00 44 8D 49 40 FF 15 4A 0F 00 00 41 B8 1F 03 00 00 48 8B D7 48 8B C8 48 8B D8 E8 65 0D 00 00 48 8D 0D 7F 11 00 00 C7 44 24 20 20 00 00 00 C7 44 24 24 01 00 00 00 48 C7 44 24 28 00 00 00 00 48 89 5C 24 30 48 C7 44 24 38 00 00 00 00 FF 15 0A 0F 00 00 4C 8D 44 24 20 48 8D 15 46 11 00 00 48 8D 0D 77 11 00 00 FF 15 F9 0E 00 00 33 C0 48 8B 4C 24 40 48 33 CC E8 2A 00 00 00 48 8B 5C 24 60 48 83 C4 50 5F C3",
"48 89 5C 24 ?? 57 48 83 EC 50 48 8B 05 ?? ?? ?? ?? 48 33 C4 48 89 44 24 ?? 66 0F 6F 15 ?? ?? 00 00 48 8D 3D ?? ?? ?? ?? 33 C9 B8 00 03 00 00 90 F3 0F 6F 04 39 66 0F EF C2 F3 0F 7F 04 39 F3 0F 6F 4C 39 ?? 66 0F EF CA F3 0F 7F 4C 39 ?? F3 0F 6F 44 39 ?? 66 0F EF C2 F3 0F 7F 44 39 ?? F3 0F 6F 44 39 ?? 66 0F EF C2 F3 0F 7F 44 39 ?? 48 83 C1 40 48 3B C8 7C ?? 66 0F 1F 84 00 ?? ?? 00 00 80 34 38 62 48 FF C0 48 3D 1F 03 00 00 7C ?? 33 C9 BA 1F 03 00 00 41 B8 00 10 00 00 44 8D 49 ?? FF 15 ?? ?? ?? ?? 41 B8 1F 03 00 00 48 8B D7 48 8B C8 48 8B D8 E8 ?? ?? ?? ?? 48 8D 0D ?? ?? ?? ?? C7 44 24 ?? 20 00 00 00 C7 44 24 ?? 01 00 00 00 48 C7 44 24 ?? 00 00 00 00 48 89 5C 24 ?? 48 C7 44 24 ?? 00 00 00 00 FF 15 ?? ?? ?? ?? 4C 8D 44 24 ?? 48 8D 15 ?? ?? ?? ?? 48 8D 0D ?? ?? ?? ?? FF 15 ?? ?? ?? ?? 33 C0 48 8B 4C 24 ?? 48 33 CC E8 ?? ?? ?? ?? 48 8B 5C 24 ?? 48 83 C4 50 5F C3",
),
# Test match-2-yar .NET EXE - Function Extraction
pytest.param(
get_data_path("dotnet/1c444ebeba24dcba8628b7dfe5fec7c6.exe_"),
True,
"1c444ebeba24dcba8628b7dfe5fec7c6",
0x06000073,
capa.rules.FUNCTION_SCOPE,
"03 28 7D 00 00 06 0A 12 01 FE 15 0A 00 00 02 03 12 01 28 7F 00 00 06 26 12 01 7B 7B 00 00 04 12 01 7B 79 00 00 04 59 0C 12 01 7B 7C 00 00 04 12 01 7B 7A 00 00 04 59 0D 06 28 77 00 00 06 13 04 06 08 09 28 76 00 00 06 13 05 11 04 11 05 28 7A 00 00 06 13 06 11 04 16 16 08 09 06 16 16 20 20 00 CC 00 28 75 00 00 06 26 11 04 11 06 28 7A 00 00 06 26 11 04 28 78 00 00 06 26 03 06 28 7E 00 00 06 26 11 05 28 65 00 00 0A 13 07 11 05 28 79 00 00 06 26 11 07 2A",
"03 28 ?? ?? ?? ?? 0A 12 ?? FE 15 ?? ?? ?? ?? 03 12 ?? 28 ?? ?? ?? ?? 26 12 ?? 7B ?? ?? ?? ?? 12 ?? 7B ?? ?? ?? ?? 59 0C 12 ?? 7B ?? ?? ?? ?? 12 ?? 7B ?? ?? ?? ?? 59 0D 06 28 ?? ?? ?? ?? 13 ?? 06 08 09 28 ?? ?? ?? ?? 13 ?? 11 ?? 11 ?? 28 ?? ?? ?? ?? 13 ?? 11 ?? 16 16 08 09 06 16 16 20 ?? ?? ?? ?? 28 ?? ?? ?? ?? 26 11 ?? 11 ?? 28 ?? ?? ?? ?? 26 11 ?? 28 ?? ?? ?? ?? 26 03 06 28 ?? ?? ?? ?? 26 11 ?? 28 ?? ?? ?? ?? 13 ?? 11 ?? 28 ?? ?? ?? ?? 26 11 ?? 2A",
),
],
)
def test_match2yar_feature_extraction(path, is_dotnet, filemd5, addr, scope, expected_bytestring, expected_sig):
"""Test extracting a function byte string using vivisect workspaces"""
output = get_match_2_yar_features(path, is_dotnet)

output = output.decode("utf8")
output_data = json.loads(output)

# Get data for filemd5:
file_features = output_data[filemd5]

# Filter for addr with correct scope
addr_features = [x for x in file_features if x["addr"] == addr and x["scope"] == scope]

# This should be unique
assert len(addr_features) == 1

# Check extraction and masking
assert addr_features[0]["bytez"] == expected_bytestring
assert addr_features[0]["sig"] == expected_sig

0 comments on commit a1db2b9

Please sign in to comment.