alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT PWNJS JS Constructs"; flow:established,from_server; file_data; content:"base_lo"; content:"base_hi"; content:"fake_object"; fast_pattern; pcre:"/^\s*?\[\s*?\d/Rs"; content:"i32"; pcre:"/^\s*?\[\s*?\d/Rs"; content:"f64"; pcre:"/^\s*?\[\s*?\d/Rs"; content:"array_addr"; reference:url,raw.githubusercontent.com/theori-io/pwnjs/; classtype:attempted-user; sid:2024994; rev:1; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_11_15, deployment Perimeter, performance_impact Moderate, signature_severity Major, updated_at 2019_07_26;)