selecting payload for db_autopwn

[lkiiski at niksula.hut.fi (Lauri Kiiski)]

Hi

Is it possible to use only reverse connect shell and bind shell with 
db_autopwn? These fail with mysql_yassl exploit (Exploit failed: No 
encoders encoded the buffer successfully).

I'd like to use linux/x86/shell/bind_tcp or linux/x86/shell/reverse_tcp 
since these work.