How do I file for contingency?

Father’s step family for the purpose of having him will his entire estate to them. The administrator of my father's estate/executor of the will never notified me of probate and omitted my name from the list of heirs. I believed I had no legal rights as when I inquired about what my father said. She said that he left me nothing except maybe the sweater I bought him at Christmas. I just recently discovered that I had legal right to be notified and that it was her duty to account for and notify all heirs. I also just discovered federal law that stipulates there is no statute of limitations that deprives one of property when that one has been denied due process. I need an attorney on contingency. One who like me cares more about justice than money as I have none because these buzzards are hoarding it all. I grew up my whole life without a father as I was illegitimate conceived of an affair. He was in my life 5 short years before he passed and I believe I am his only natural child and so legally entitled to his estate. He was a wealthy man.