Kim Kardashian did NOT bang a convict while she was engaged to Kris Humphries … and the con is nothing but a swindler and liar … so says Kim’s lawyer in a scathing letter. Andrey Hicks sent a website an email he claimed was written by Kim herself, admitting the two had an affair in Monaco shortly before her wedding to Kris … and it was “a mistake.” Now Kim’s lawyer, Marty Singer , has sent Andrey — better known as inmate #21236-055 — ripping into him, calling him “a swindling convict and a liar,” adding Andrey has even called himself “a greedy capitalist who went to jail for a greedy scheme.”