The 35-year-old, who has not featured for the Black Cats since March, played the first half for the club’s U21s against Everton on Monday.
Brown is desperate to play his part in the Premier League run in, with Sunderland battling to maintain their top-flight status.
Sunderland are 18th in the table, one point off safety, but have a game in hand on their relegation rivals.
Brown said: “It was a positive 45 minutes and the more players we get back for the remaining four games the better.
“It is very important because we have some very big games coming up. Personally it is just nice to be back playing and I can’t wait to get back out there.”
Sunderland travel to Goodison Park on Saturday to play Everton, and they face away games to Arsenal and Chelsea in the last week of the season, with a home match against Leicester on May 16.