I dont rly know if the medic kits and the energy are modificable, but to change the bux i did this:
1- On game guardian untick all the memory search and tick other
2- On wsc click on the money(to add money with bux)
3- Search for 2500(máximum amount of bux and money) and the type must be Dword
4- Edit all the results to -(amount of bux that you want) for example I edited It to -2500
5- Search again for 2500
6- Edit again like in step 4
Keep repeating this until you dont find anything with 2500
Final step- click on buy money for 2500 bux, if you did everything correctly It Will show a prompt saying if you want to spend -(the bux that you wanted), click yes and It Will add the amount of bux that you want, you can keep adding bux by buying again.