I used 2VSM from PDB (with chain A as Nipah virus and chain B as receptor) and found amino acid contacts between chains A and B that were also highly accessible (with solvent accessible surface area > 0.4) to use as hotspots in RFDiffusion to generate various length binders. Then input best results into Alphafold multimer in complex with chain A of 2VSM to validate interaction in the desired region.