Irules to redirect fqdn to node specific.

This should have your answers.

TLS server_name extension based routing without clientssl profile

Or if you intent to offload at the LTM, you gotta go with SNI method. With the Irule of below pool member selection logic.

when HTTP_REQUEST {    
    switch [string tolower [HTTP::host]] {        
        "app1.meuteste.com.br" { pool poll_app member 192.168.150.10 443 }            
        "app2.meuteste.com.br" { pool poll_app member 192.168.150.20 443 }            
        "app3.meuteste.com.br" { pool poll_app member 192.168.150.30 443 }
        "app4.meuteste.com.br" { pool poll_app member 192.168.150.40 443 }
    }
}