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Fnord

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Fnord is a pattern extractor for obfuscated code that extracts byte sequences and creates statistics by processing the file with a sliding window to extract sequences of varying lengths, presenting the most frequent sequences in a table with details like length, occurrences, sequence, and entropy. It also generates an experimental YARA rule by calculating a score based on the length and occurrences of sequences, processing each sequence to detect interesting ones using a list of keywords, and calculating Levenshtein distance to skip irrelevant sequences.

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