Madara said that he obtained the Rinnegan eyes shortly before his death
Here we see that old Madara who has left his eyes [take EMS] with someone [i.e. Nagato]
Now take a look at this as well we see Madara is alive after giving his eyes for quite a lot of time even though he was supposed to be dead
Don't you think its rather odd that Nagato's parents didn't even notice that their kid has some other eyes? Madara when transplanted his eyes into Nagato [the eyes that originally belonged to Izuna] the eyes that had the EMS as its highest power [when wielded by an Uchiha], now when an Uzumaki went through traumatic conditions would however awaken the Rinnegan.
This is where that happened. This is where he obtained the Rinnegan. The reason why he couldn't use any of Madara's other EMS techs is simple because he is not an Uchiha, The Uzumaki will unlock the Rinnegan but other EMS abilities are off limits.
Now here we see that Madara didn't divulge much info in front of Kabuto but was rather interested in what Kabuto knew ?
Also in that last page we see Kabuto's snide comment about Tobi keeping his part of the plan and Madara thinking.
Here we see Madara questioning Tobi and Tobi unable to give proper answers but rather give some excuse