[oss] [Lab 4] Solutions

[Razvan Deaconescu]

Radu Caragea <sinaelgl at gmail.com> writes:
> Hello everyone,
>
> I made some (rather brief) walkthroughs for the tasks in lab 4.
> Instead of using plain old gdb I used gdb-peda [1] for a better
> visualization of the stack, registers and currently executed
> instructions. You might find some useful tricks in the casts.
>
>  - overflow-ptr [2]
>  - off-by-one [3]
>  - overflow-address [4] (including the solution when you don't have an
> exit imported in the PLT which requires knowing some basic ROP
> exploitation)
>
> Feel free to ask for any clarifications.

Thank you very much for this, Radu. I've added these links to the lab[5].

We will configure PEDA on the systems in the lab rooms this week-end
such that we could use it in the next labs.

> [1] https://github.com/longld/peda
> [2] https://asciinema.org/a/46zon1aztzskxvf2o71wmqz3b
> [3] https://asciinema.org/a/ab2szanw5m7yj625hunfi9xsf
> [4] https://asciinema.org/a/30eg4nxmv0zt13b81xgh8zz09
[5] http://ocw.cs.pub.ro/courses/cns/labs/lab-04#solutions

Razvan