base64_substring
The base64_substring tool helps malware analysts search through base64-encoded samples by enumerating all possible base64 encodings for a given search term and generating a yara rule that checks those possibilities. To run an example, generate a yara rule that matches a base64-encoded file containing the term 'Application' by using the provided script. Further reading: 'Searching for Content in Base-64 Strings' by Lee Holmes.
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