Copylock Dongle Cracking

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Reading the other thread that lists all those hidden messages left for would-be crackers by game programmers, I noticed a lot of them making bold statements about the crackability of their games and it made me wonder if there was ever a programmer or game that did a REALLY good job of protecting their software? It's funny because I remember Ocean, Robocop 3 and the 'dongle' affair. Anyone else remember this? Leading up to the release there were loads of game magazine features about the state of piracy on the Amiga. Ocean were making bolds claims; they'd developed a way to make games uncrackable.

Daemon Tools Lite Free Download For Windows 7 64 Bit Full on this page. Each copy of their new games would come with a hardware dongle, designed to be plugged into the spare mouse port when playing the game. Since it would be impossible for cracking groups to replace this vital peice of hardware, the games would be uncrackable! Of course, I heard a few hours after the release of Robocop 3 the game had been cracked, which at the time made me wonder if the whole thing hadn't been a stunt to boost pre-order sales! ( Slightly OT: Another little 'piracy' anecdote for those who can remember: Do you remember the industry quotes leading up to the release of the CD32?

Cooking Dash Deluxe Apk Full Version Free Download there. You see; CD's were uncopyable, yet they were just as cheap as floppy disks to produce. So, the magazines asked, 'with there being NO piracy possible on your new CD games, and the games themselves costing no more to produce (most of the time they were little more than the A1200 version put onto a CD), does that mean the consumer can enjoy lower prices?' 'Why of course it does! Piracy takes such a huge chunk of our revenue that we can now offer lower prices to the consumer like we've always promised!' A few months later.

The new CD32 games were priced £10 higher than their floppy versions! A classic story to remember the next time some industry bod claims that piracy makes game prices higher!) Anyways; uncrackable / very difficult to crack games. Where there any?

All the ReadySoft games were difficulty because they crammed so much on each disk. Every disk held more data than a standard disk could hold, so you had two problems.

Firstly you had to work out what bits from each disk to move onto the extra disk, then you had to alter the loaders to take into account extra disks. The loader change required finding spare memory to put your code in, then you often had to hack up a screen to request the extra disk. Often the crackers just made the screen flash to indicate putting in the extra disk since that can be done without much code. As for tough games to crack, any written with interpreters are tough (all those horrid old Infocom text adventures), any compiled AmigaBasic games (as the code is not visible), and games with hidden checksums were tough to crack compared to 'normal' games. Some hard (but not impossible) games to crack in addition to the Readysoft ones: Archer Maclean's Pool, Cruise for a Corpse, Double Dragon 2, Exile, Future Wars, Hook, Magic Pockets, Operation Stealth. Cruise for a Corpse? That was a simple DOS disk with manual protection.

You could install it onto a harddrive by copying the files (I had the original and did so). Are you sure? It's interesting to hear what you said though! It makes you wonder (not knowing the techiques myself) if there was anything a programmer could have done that couldn't have been bypassed? It's weird to think that there's no such thing as an uncrackable game. Although I've heard that no-one has managed to crack the Knights of the Old Republic 2 update, which is intreguing!

Early EA games eg: Arctic Fox used a compiled decrypting loader that is very tough to crack. In fact, anything not written directly in assembly language is tricky as a rule. The Zeewolf 1 & 2 manual protection was hard to remove properly.

The menu and mission brief sequence is run by a scripting system so I had to understand that to remove the part of the script that went to the manual protection. MegaTwins kept re-loading the code so I had to keep re-patching the trackloader and trainers every time something was loaded.

More annoying than difficult I suppose Manic Miner had something like 12 loadable sections that all had to be individually cracked and patched. Very annoying! If *this* is really a problem, Battle Squadron shouldn't have been easy to crack either. They managed to cram more than 1 MB on the disk. Erm, no they didn't.

The one disk versions removed the intro to fit it onto one disk. I don't count removing 200k of intro as squeezing the game onto a disk! Also some MFM games are easier to crack than others due to better programming in the first place. Turrican 2 is one disk packed to the max with data, but because it is ordered into logical files, it is quite easy to move certain files off the first disk and onto a second disk for the cracked version. It is a sad fact that the more sloppy programmers games were generally harder to crack because they had bits all over the place, spaghetti code, multiple copies of the loader etc. A more structured programmer would just have one loader at all times and one main program so cracking it should be a lot easier. Hey Codetapper, how many titles did you find with self-modifying code and/or use of undocumented opcodes?!?

Well I ain't Codetapper but. IIRC Uridium 2 uses lots of LINEA and LINEF in the intro sequence, though I don't think it was for copy protection purposes.

Nothing else springs to mind! I've found that many 3D games use self modifying code in the graphics routines to rewrite the inner loop(s) to render in a particular colour. The Hard Drivin' series is particularily bad for this but I've seen it in The Killing Cloud and Shuttle as well. Zeewolf and Manic Miner have some SMC as well but its not graphics related ISTR. As Codetapper has already pointed out, some games were not hard because the programmer had made it difficult to crack, but as stated before, with a custom MFM system (i.e. Not a standard AmigaDOS system) some games came on larger capacity disks.

BC Kid for instance was impossible to put onto 1 disk, I know, because I cracked it for Dual Crew Shining. Factor 5's disk format was very accommodating. It saved the publishers money, because if they hadn't have used their own format, BC Kid would never have fitted on one disk. Also their custom packer was better than FImp or Propack. The only reason in the case of BC Kid that Disk 2 has duplicate files of Disk 1 is to save on disk swapping. The disk swapper routine was quite simple. If it couldn't find a file, it would simply request the other disk.

Randy Linden (He of Readysoft and Bleem! Fame) realised that a custom MFM game over 5-6 disks is going to cause a cracker problems. I wouldn't say that Dragons Lair is a very hard protection to beat, but it is a very time consuming one to beat. Same goes with Video Kid by Gremlin Graphics. The basic MFM system of the game is basic and as far as I can remember is the same MFM system as Shaun Southerns Magnetic Fields copy protection, but its purely because every loaded file in the game has a separate loader within it makes it time consuming. Copy protections are best when they are one offs (i.e. Its written specifically for a game and won't appear again).

SWIV would have been a tricky one, by the very nature of the way the game loads. It could have been cracked to AmigaDOS files, and the programmer deliberately left all the filename information there to try and coax the cracker to do it that way, because it would have made the game totally unplayable as the fileloader searched all over a DOS disk to get the files. Thankfully, Phil Douglas was a particularly good cracker and didn't get caught out.

Hook to look at wasn't difficult. It used the same old RNC Copylock (Yawn!) as every other game, but with the added stuff hidden in the Copylock, the game remained not cracked properly since 1992.

The only problem with the protection though, was that it was so subtle, that many people simply didn't notice it. So in the end, was it actually an effective copy protection? Double Dragon 2 however had a hell of a lot of neat ideas. Richard Aplin had obviously spent long and hard on it, and as an introduction to cracking, its an excellent game to crack. It has every conceivable idea and trick in the book.

But ultimately, a game is only as hard to crack as someones skills allow. I have cracked/helped out on a number of titles for some WHDLoad authors, where they have almost been beating their brains out trying to crack. Without wanting to brag, I haven't found any of them overly difficult to crack, but then again, I've spent years doing it long before those guys. So the hardest game to crack? Thats really more to do with the skills of the cracker/programmer than the copy protection itself. Just my two pence worth.