There is no single package that can convert the images (CUE/BIN, IMG, MDF, or NRG) to ISO, for this we need to install different packages from the the Ubuntu repositories (Universe).

CUE/BIN to ISO: bchunk
     sudo aptitude install bchunk
Convert: bchunk image.cue (or image.bin) image.iso

IMG to ISO: ccd2iso
     sudo aptitude install ccd2iso
Convert: ccd2iso image.img image.iso

MDF to iso: mdf2iso