In this manuscript, we present a study on the optical properties of ZnO nanowires synthesized via hydrothermal method. The nanowires were characterized by low temperature photoluminescence spectroscopy, revealing resonant modes indicative of random lasing behavior provided with scattering by misoriented nanowires. The spectral position of the resonant modes suggests lasing in the region of the P band of exciton-exciton interaction. Our results also indicate a correlation between the surface density of the nanostructures and peak intensity of the emission. Overall, our findings demonstrate the potential of hydrothermal synthesis for fabricating efficient light-emitting devices based on ZnO