Take over of father's business by brother

My father had 5 children. 4 daughters and 1 son. He had some ancestral properties and one shop. I am one of the daughters. My brother took incharge of all the properties and shop and did not give us any money/property till now. Whenever we asked he said he will give what is the urgency like that. Its been more than 20 years. Now he is saying he will not give a penny. While dying, my father had around 5 properties plus the shop. My brother had taken the full income from that shop and bought 7 more properties from the income generated from the shop plus he took all the money for his other expenses from that shop only. Did not give us one rupee also. He recently sold an ancestral property, while doing that he got sign from all 3 of us getting out permission, one of my sister noticed that he mentioned that he gave 1 lakh to each of us as part of the sale but that is not the case, he did not give any of us 1 rupee also. When i signed i did not notice this thinking brother is innocent, he needs money that is why he is selling lets not pressure him like that. But One of my sisters who noticed this asked regarding property share of 1 lakh thinking he got the sign but forgot to give us the money and he would give when asked she tired asking atleast give 50k since she really needed the money, he actually sold the property for 20 lakhs, he has blackmailed her that you cannot do anything i will not give you anything. After coming to know this, The three of us discussed and Now we are thinking to ask a claim for all the properties as equal share. Since none of the property he owns was bought outside from the inherited shop income. We are ready to give a certain percentage since he worked in the shop kinda like a salary for a owner and employee. What are the legal rights for this? We can prove all his self acquired properties also came from the shop. Please give us some hope. We are extremely devastated by our brother's behavior.