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In this paper, the authors propose MetaSymploit, the first system of fast attack script analysis and automatic signature generation for a network Intrusion Detection System (IDS). As soon as a new attack script is developed and distributed, MetaSymploit uses security-enhanced symbolic execution to quickly analyze the script and automatically generate specific IDS signatures to defend against all possible attacks launched by this new script from Day One. They implement a prototype of MetaSymploit targeting Metasploit, the most popular penetration framework. In the experiments on 45 real attack scripts, MetaSymploit automatically generates Snort IDS rules as signatures that effectively detect the attacks launched by the 45 scripts.
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