mirror of
https://github.com/vee1e/flare-floss.git
synced 2026-09-01 17:57:06 +00:00
lakshit verma
1e2ba0bf93
Use short script names in docstrings and scripts/README instead of full scripts/disassemblers/ paths.
107 lines
4.1 KiB
Python
107 lines
4.1 KiB
Python
#!/usr/bin/env python3
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# Copyright 2021 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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render-r2-import-script.py
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Translate a floss result document into an radare2 script
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that marks up the current workspace.
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Usage:
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$ floss suspicious.exe -j > floss-results.json
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$ python render-r2-import-script.py floss-results.json > apply_floss.py
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# now run `apply_floss.py` in radare2
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"""
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import sys
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import base64
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import logging
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import argparse
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from pathlib import Path
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from floss.results import AddressType, ResultDocument
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logger = logging.getLogger("floss.render-r2-import-script")
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def render_r2_script(result_document: ResultDocument) -> str:
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"""
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Create r2script contents for r2 session annotations.
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"""
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main_commands = []
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fvas = []
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for ds in result_document.strings.decoded_strings:
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if ds.string != "":
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sanitized_string = base64.b64encode(
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b'"FLOSS: %s (floss_%x)"' % (ds.string.encode("utf-8"), ds.address)
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).decode("ascii")
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if ds.address_type == AddressType.GLOBAL:
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main_commands.append("CCu base64:%s @ %d" % (sanitized_string, ds.address))
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if ds.decoding_routine not in fvas:
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main_commands.append("af @ %d" % (ds.decoding_routine))
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main_commands.append("afn floss_%x @ %d" % (ds.decoding_routine, ds.decoding_routine))
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fvas.append(ds.decoding_routine)
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else:
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main_commands.append("CCu base64:%s @ %d" % (sanitized_string, ds.decoded_at))
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if ds.decoding_routine not in fvas:
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main_commands.append("af @ %d" % (ds.decoding_routine))
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main_commands.append("afn floss_%x @ %d" % (ds.decoding_routine, ds.decoding_routine))
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fvas.append(ds.decoding_routine)
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for ss in result_document.strings.stack_strings:
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if ss.string != "":
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sanitized_string = base64.b64encode(b'"FLOSS: %s"' % ss.string.encode("utf-8")).decode("ascii")
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main_commands.append("Ca -0x%x base64:%s @ %d" % (ss.frame_offset, sanitized_string, ss.function))
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for ts in result_document.strings.tight_strings:
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if ts.string != "":
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sanitized_string = base64.b64encode(b'"FLOSS: %s"' % ts.string.encode("utf-8")).decode("ascii")
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main_commands.append("Ca -0x%x base64:%s @ %d" % (ts.frame_offset, sanitized_string, ts.function))
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return "\n".join(main_commands)
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def main():
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parser = argparse.ArgumentParser(description="Generate an radare2 script to apply FLOSS results.")
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parser.add_argument("/path/to/report.json", help="path to JSON document from `floss --json`")
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logging_group = parser.add_argument_group("logging arguments")
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logging_group.add_argument("-d", "--debug", action="store_true", help="enable debugging output on STDERR")
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logging_group.add_argument(
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"-q", "--quiet", action="store_true", help="disable all status output except fatal errors"
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)
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args = parser.parse_args()
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args.report_path = getattr(args, "/path/to/report.json")
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if args.quiet:
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logging.basicConfig(level=logging.WARNING)
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logging.getLogger().setLevel(logging.WARNING)
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elif args.debug:
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logging.basicConfig(level=logging.DEBUG)
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logging.getLogger().setLevel(logging.DEBUG)
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else:
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logging.basicConfig(level=logging.INFO)
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logging.getLogger().setLevel(logging.INFO)
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result_document = ResultDocument.parse_file(Path(args.report_path))
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print(render_r2_script(result_document))
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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