alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Possible Android Stagefright MP4 CVE-2015-1538 - ROP"; flow:established,from_server; file_data; content:"|00 00 00 18 66 74 79 70|mp4"; within:13; content:"|98 2A 00 B0 B3 38 00 B0|"; fast_pattern; content:"|00 10 00 00 07 00 00 00 03 D0 00 D0 04 D0 00 D0 44 11 00 B0|"; distance:4; within:20; reference:cve,2015-1538; reference:url,blog.zimperium.com/the-latest-on-stagefright-cve-2015-1538-exploit-is-now-available-for-testing-purposes/; classtype:attempted-user; sid:2021758; rev:2; metadata:created_at 2015_09_10, cve CVE_2015_1538, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)