alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Possible Android Stagefright MP4 (CVE 2016-3861) ROP"; flow:established,from_server; content:"ID3"; content:!"|FF|"; within:1; content:"|41 d8 41 d8 41 dc 41 d8 41 d8 41 dc|"; fast_pattern; within:800; pcre:"/^(\x41\xd8\x41\xd8\x41\xdc){2,}\x41\x00/R"; flowbits:isset,ET.MP4Stagefright; reference:cve,2016-3861; reference:url,googleprojectzero.blogspot.com.br/2016/09/return-to-libstagefright-exploiting.html; classtype:attempted-user; sid:2023185; rev:2; metadata:affected_product Android, attack_target Client_Endpoint, created_at 2016_09_12, cve CVE_2016_3861, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Android_Exploit, updated_at 2019_07_26;)