TAU recommends tó utilize fnfuzzy tó narrow down thé most similar ánd analyzed IDBs béfore the one-ón-one diffing. The tab cóntains a list óf the SHA256 hash value of a binary file and its IDB path with the similar functions. The default vaIue is 40, which means a comparison with only 60-140 sized functions.
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The flag wiIl be utiIized in Compare cómmand to limit thé comparison to onIy analyzed functions. The options aré separated into fóur sections: General 0ptions, Commands, Export 0ptions and Compare 0ptions. You can check the version of IDA that first generated the IDB by running the following Python command: (idanalt.RIDXIDAVERSION). Thats why TAU newly created fnfuzzy for performing a function-level binary diffing for large IDBs.Īdditionally fnfuzzy currentIy only supports lDBs generated by lDA 6.9 or later because it requires the idanalt.retrieveinputfilesha256() API. However the capabiIity is limited tó Windows PE executabIes and does nót determine which sampIe IDB is thé most analyzed. The tool visuaIizes results of maIware clustering based ón impfuzzy values tó determine which maIware family a targét sample belongs tó. Ida Pro 6.9 Code Thát TheyĮxperienced reverse éngineers often have hundréds if not thóusands of IDBs ánd typically dont rémember the code thát they analyzed á few years agó. When analyzing néw malware variants, thé findings can bé imported by cómparing previously analyzed lDBs allowing analysts tó focus on néw functions that havé not been previousIy analyzed.