Simple GDB Scripting```import gdb
class MyBreakPoint(gdb.Breakpoint):    def stop(self):        global state, bl, ans        if state == 0:            bl = gdb.parse_and_eval("$bl")            state = 1        elif state == 1:            state = 0            al = gdb.parse_and_eval("$al")            ans.append(chr(bl^al))        return False
state = 0bl = 0ans = []gdb.execute("b *0x4149B0")MyBreakPoint("*0x4020A7")MyBreakPoint("*0x40213b")gdb.execute("b *0x4021f3")gdb.execute("r <<< 'helloworld'")gdb.execute("set $rax=0")#gdb.execute("awatch *0x4149B0")gdb.execute("set $rax=0")gdb.execute("c")print("".join(ans))gdb.execute("q")```