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24 lines
997 B
Python
24 lines
997 B
Python
# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
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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: [package root]/LICENSE.txt
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# Unless required by applicable law or agreed to in writing, software distributed under the License
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# is distributed on an "AS IS" BASIS, 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 limitations under the License.
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from typing import Optional
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from vivisect import VivWorkspace
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from vivisect.const import XR_TO, REF_CODE
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def get_coderef_from(vw: VivWorkspace, va: int) -> Optional[int]:
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"""
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return first code `tova` whose origin is the specified va
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return None if no code reference is found
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"""
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xrefs = vw.getXrefsFrom(va, REF_CODE)
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if len(xrefs) > 0:
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return xrefs[0][XR_TO]
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else:
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return None
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