alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO NoxPlayer Simulator Update Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/posttoken/simulator/"; startswith; fast_pattern; content:"/update"; endswith; http.host; content:"api.bignox.com"; bsize:14; reference:url,www.welivesecurity.com/2021/02/01/operation-nightscout-supply-chain-attack-online-gaming-asia/; classtype:misc-activity; sid:2031594; rev:2; metadata:attack_target Client_Endpoint, created_at 2021_02_01, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2023_05_02;)