Stack Buffer Overflows

https://docs.google.com/document/d/1n40Bj9CWyAf_l5oBr4-2Qi0wC7EmzbupulRzroJhzyg/edit#heading=h.trhqxlsc8vth

stack_overflow

gdb

• check the stack over flow code;

• use stack over flow to overwrite a return flag to fake the result;

• use gdb to check the value of that return flag after stackoverflow;

• use gdb to check the whole stack after stackoverflow;

• use gdb to find out the minimum value to overwrite the return address (last time we just overwrite the return flag);