There are some things about Mr. Gammon’s sketches and high voltage transistor circuit that are pretty great.
https://www.gammon.com.au/forum/?id=12898
He has 3 sketches that will use high voltage programming if you enable it inside the sketch. The wiring is similar to what I do in HV Rescue Simple, but uses one less pin on the programmer arduino. The page shows the wiring for the DIP version of the ATmega328P, and it’s talking about the pin numbers on the chip, not the common “Arduino” pin numbers such as digital 1-13 and analog 0-5. And so does the HV Rescue Simple instructable. So with either schetch and circuit you need to translate. Both schematics give the pin functions in addition to MCU pin numbers, so you can use those to translate DIP to SMD pin numbers. The pin functions are designations like PC0, PC1, PC2, PD1, PD2, etc.
So you have to get out the datasheet and figure out which pins of the ATmega328P on the Nano you need to connect to, and how they tranlate to the header pins on the Nano by studying the Nano schematic. One of the pins XTAL1 does not go to the header pins, you have to hold or tack with solder a wire onto the tiny pin of the chip. Instructables member douggorgen wrote in the comments about holding a wire to that pin during programming. And he mentioned overcoming the on-board Nano reset 1K pullup resistor by changing the resistor sending 12V to the reset pin with a 150 ohm one. I’m not sure I would take that approach, I would probably just temporarily desolder and remove the Nano’s pull up resistor.
If you have a clone Nano here is info/schematic/board layout:
http://actrl.cz/blog/wp-content/uploads/nano_ch340_schematics-rev1.pdf
https://www.instructables.com/Arduino-Nano-ATmega238PCH340G-v30-PCB-layout/
This would take a lot of patience. Is it worth it? I don’t know if I would recover a SMD MCU. It’s a lot of wires, almost all of the connections on the headers plus the XTAL1 pin directly on the MCU and tiny desoldering/soldering. It would be educational, and something to brag about for sure.