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@williballenthin
williballenthin / yara_fn.py
Last active December 4, 2020 05:25
generate a yara rule that matches the basic blocks of the current function in IDA Pro
'''
IDAPython script that generates a YARA rule to match against the
basic blocks of the current function. It masks out relocation bytes
and ignores jump instructions (given that we're already trying to
match compiler-specific bytes, this is of arguable benefit).
If python-yara is installed, the IDAPython script also validates that
the generated rule matches at least one segment in the current file.
author: Willi Ballenthin <william.ballenthin@fireeye.com>