The code for Cuttlefish is right here. It is a 62 KiB .zip file, as the original code is a whole 905 KiB uncompressed. The code is licensed under a slightly modified MIT license. (It was released only after confirming with the professor, Viraj Kumar, that such a release would be acceptable.)
More writeup will be available eventually, but the code is fairly well-documented in most places. Some parts do have unintentional (and therefore undocumented) side-effects, but most of them are worked around.