The only people who were present during the attack was Arthur (Boo) Radley and Bob Ewells.
Bob ewell
Scout is dressed up as a ham for Mrs. Merriweather's pageant.
bob ewels attacked them but boo saved them
Boo Radley.
They are attacked in the dark by mr.ewell and boo comes to the rescue (which you don't realize until later)
299-302, in Perennial classics version.
As Scout and Jem walk home through the woods, Jem hears someone following them. He tells Scout to hurry! They start running! But someone grabs Jem. Scout gets knocked over. Mr. Ewell attacked them, but Scout could not see who it was.
Bob Ewell attacked Jem and Scout after the pageant to get back at Atticus for being so effective for Tom Robinson in Court.
they where attacked by mr ewell down by the oak tree
Bob Ewell followed Scout and Jem from the school. Jem heard him in the woods behind them but could see no one. He urged Scout to hurry--and be quiet! When Mr. Ewell attacked, he wanted Jem out of the way so he could hurt Scout. She kept getting tipped over as they fought. She couldn't see much through her costume.
Boo Radley leaves the presents for Scout and Jem in the knothole of the tree near the Radley house.
chapter 28-page 260-262 is when jem and scout get attacked