alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Linksys Smart WiFi Information Disclosure Attempt Inbound"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/JNAP/"; startswith; http.header; header_lowercase; content:"x-jnap-action|3a 20|http|3a 2f 2f|"; fast_pattern; pcre:"/^(?:www\.)?(cisco|linksys)\.com\/jnap\//Ri"; http.request_body; content:"|7b 7d|"; startswith; reference:url,raw.githubusercontent.com/zeropwn/Linksys-Smart-WiFi-Information-Disclosure/master/nss.py; classtype:attempted-recon; sid:2027357; rev:5; metadata:attack_target Networking_Equipment, created_at 2019_05_16, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2024_05_01, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1082, mitre_technique_name System_Information_Discovery;)