Extract the APC
The APC that you need to steal is being parked, by default, outside of the Lamar Khaate Palace and after some time, it follows the jeep with Malak inside. The convoy heads towards Yakho Oboo Supply Outpost and it would be best if you stopped it at some point, e.g. with the cardboard box placed on the road.
After the convoy stops, approach the APC and fulton it. This is not an option when you are playing the mission for the first time, because you need the CARGO 2 upgrade for the fulton device. Fortunately, you only need to rescue the below prisoners, because there is a Transportation Specialist among them.
Extract three prisoners from the palace
You should rescue the three prisoners from Lamar Khaate Palace while replaying the mission. You need to hurry and go to them at the very beginning of the mission, or they will be killed. Approach the palace carefully and walk around all the enemies on the road and by the fortifications, e.g. on the left. Enter the ruins and make it to the upper levels. Stay here a bit longer and neutralize all of the enemies in the ruins, as ell as the ones that are about to enter the building (you can use the dog to help you find them). Thanks to this, you will be free to locate the enemies and extract them, without worrying that someone might die suddenly.
Locations of prisoners have been marked on the above map. Two of the prisoners are at different levels of the ruins. Carry each one of them to the top level of the palace and fulton them. The third one is being kept in a cage and before you come close, make sure that you have secured the area around it. Big Boss is going to need several seconds to pick the lock. After you open the cage, carry the prisoner outdoors and extract him to the Mother Base.
Extract the two prisoners at the base
You can rescue the prisoners in Yakho Oboo Supply Outpost while replaying the tenth mission, or while rescuing Malak. They are being kept in the ground-floor room marked in the above screenshot, in the Northern part of the base.
There are two different ways to reach the prisoners - you can walk into the building, or drop down into it, through the hole in the ceiling. If you want to reach the door, you could crawl through narrow tunnels, thanks to which you get around many opponents on the upper walls and in the main yard. If you prefer to drop in through the ceiling, you need to eliminate, at least, one opponent in the room. Open the red door and start the rescuing operation. You do not need to carry the prisoners outside of the building, because you can carry them to the room with the hole in the ceiling, place them under the hole and extract them.
Listen to the conversation between the driver and Malak
It is best to complete this objective while replaying the mission. Ignore the palace and head towards Yakho Oboo Supply Outpost. Try to approach the location from the North, i.e. from the high ledges. At the same time, avoid being spotted and raising the alarm. Drop down to the upper walls of the base and deal with all of the patrolmen. Wait for the jeep with Malak to arrive. Stand in the position that allows you to see the Western room in the base shown in the above screenshot, through the window.
Equip binoculars with microphone to eavesdrop on the conversation remotely.
Note - If you do not want to use binoculars, you can also use the narrow tunnels under the base, or hide inside the neighboring room. However, the risk of being spotted is higher then, especially that apart from the driver, there also are several more opponents.