script

# copy the bomb from /cse/web/courses/cse351/17wi/labs/lab2/cse351staff
# or https://courses.cs.washington.edu/courses/cse351/17wi/labs/lab2/cse351staff/lab2-bomb.tar

> ./bomb
> hello world

# blows up

open bomb.c
what's going on
some argument stuff
lets checkout phase_1

> gdb bomb
> break pha[[tab complete]]
> break phase_1
> run
> blahblahbalh

# hits breakpoint

where are where

> bt
> disas

sub/add %rsp to setup stack frame
check out the parameter

> x /s $rdi

checkout what's happening
strings_not_equal (%rdi is already passed in)
explain je

So we want to find the other string

> stepi
> stepi

Explain step vs stepi, next vs nexti

> x /s $rsi

Looks hopeful
Lets try it

> quit
> bomb
> Why make trillions when we could make... billions?
Ctrl-C

It worked, let's save that in our defuser.txt