New with Hashcat

[Snoopy]

Hello guys,

I am new here and I start directly with the question:

Is it possible to add to the existing binary file (altered by me) some garbage at the end to get desired SHA256 value as it was before altering it?

I ask here if hascat has such functionality? Or any other method if possible?

thanx!

short answer: no, hashcat is not meant for this

long answer: you are looking for collisions,  there are known attacks and tools to provide this for md5, but not for sha256