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I read an article about a regular expression to detect base64 but when I try it in “yara python” it gives an error of “unterminated regular expression”
the regular expression is:
(?:[A-Za-z0-9+/]{4}){2,}(?:[A-Za-z0-9+/]{2}[AEIMQUYcgkosw048]=|[A-Za-z0-9+/][AQgw]==)
could anyone throw a suggestion please?
thanks
I would suggest escaping
/character in the[A-Za-z0-9+/]block, because while unescaped it defines regular expression start/end.