hacker.org

this one took some trial&error

You should really look at how you implement your guesses - I made a lot of mistakes.
Once you do the right thing the answer is crystal clear.

Is there a better way to invert the multiplication? int i, d = 0; i = 230392619; i ^= 0x69f6bc7; d = i / 0x1534162; while (d++ * 0x1534162 != i); i = d ^ 0x2eb22189; i += 0x6fe5d5; I guess not, therefore the reverse calculation is only about twice as fast as the normal brute force approach.

I decompiled with jad and made transformations similar to fido2509's, but i took it way too far until i finally took a look at the stack in the debugger and replaced the branch in the else clause with else return 0L; Great challenge, but i could really bite my ass for going that long into the wrong ...

hi, my version is only double the length ;) because i'm stupid my function is at the end, not the beginning, and because i'm lazy, all variables are stored in memory and loaded each and every time they are needed :D 29+27*>2 7*<<44*>27*<1-35*>88*c36*<44*?27*<1-27*>806-*g44*<p! 35*<<44*<-46*?35*<46*?...

I could run the IDE without problem using Mono2.6.7 (current on Ubuntu 11.04), after i installed the already mentioned winforms2 packet.

Although the interface could be better, it's already quite helpful.


thx, asdf_2 !

The link's dead. Can you please re-upload it? I shall second that. Since the OP does not seem to be around anymore, could somebody who has this program please upload it somewhere? That _would_ be great. When debugging the php vm it's quite arduous to get a good look at what happened to some memory ...