Task: Feeling Chained
Follow the sequence of operations in the functions of the binary at feeling-chained/support/buff-ovf3. Identify the necessary ones and… you already know how to call them.
If you cannot find your way through this exercise, look for variables that you need to overwrite with specific values in order to finish the exploit, and think of their positioning on the stack. The previously mentioned online example is still highly relevant.
Checker
To test the implementation, enter the tests/ directory and run:
make check
In case of a correct solution, you will get an output such as:
test_payload ........................ passed ... 100
Total: 100/100