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Post ArEqmH3TiUj4e1o9K4 by [email protected] |
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More posts by [email protected] |
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Post #ArC99cPrg76rFvgFCy by [email protected] |
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Separate thread (from Bible Builder) for hacking on Captain Bible in Dome of Da… |
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Post #ArC9ITFD9FnHPruzK4 by [email protected] |
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it looks to use a very similar DAT format to Bible Builder, including .ART chun… |
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Post #ArC9L34Qv0F36m6djk by [email protected] |
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Bible Builder was 1992, Captain Bible was 1994. |
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Post #ArCAQwKF0cnhsesCES by [email protected] |
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@Unlikelylass yep, and it's even weirder than you'd expect:https://www.… |
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Post #ArCAlGMcDVMzotfsrg by [email protected] |
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oh yeah, the thing that nerdsniped me last time: the fact you can only see the … |
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Post #ArCAuML1NFDIxHGZgO by [email protected] |
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hopefully that won't happen this time.but on an unrelated note I've alr… |
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Post #ArCB6BmgRFsPhKqW48 by [email protected] |
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this, btw, is the only game I know of where your boss prays with your character… |
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Post #ArCBQ34IYOPCSRYSvY by [email protected] |
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also I think this game is technically a metroidvania? it's just one where t… |
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Post #ArCBSqo0bQlNIJGuh6 by [email protected] |
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@foone You need to play more WH40k :-) |
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Post #ArCBi03OV60WJwgxXc by [email protected] |
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@foone Imagining a Metroid where you play as Christ and have to unlock his powe… |
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Post #ArCBmOACnp4cFpyEvA by [email protected] |
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@TomF no, I'm allergic |
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Post #ArCCGybNtFNrxBGiW0 by [email protected] |
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I restored an earlier save (for cheat-finding reasons) continued playing, then … |
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Post #ArCCpVBtES8Ss6o5WS by [email protected] |
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1 Corinthians 15:4-6 is really the Hookshot of Captain Bible |
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Post #ArCDXYxqZ0D1JhFRvk by [email protected] |
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@foone About 30 years ago (fuck) after lunch I and some coworkers stopped in at… |
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Post #ArCFKPHzQLXlSBWZOq by [email protected] |
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@jonhendry hah, oh dear! |
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Post #ArCGMo9u1we57PRzf6 by [email protected] |
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yeah the DAT format is similar enough that my bible builder tools can open it |
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Post #ArCH9iqGaQ5sooaddo by [email protected] |
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but the way I cheated at compression isn't gonna work here, not without red… |
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Post #ArCHHcZXmTrngqXCbY by [email protected] |
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@foone feeling squeezed? |
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Post #ArCIDqBFLPQigsvlvU by [email protected] |
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oh hey, multi-return! that's not something you can do in C! (I mean, at lea… |
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Post #ArCIkJ6DMOUheD3g3c by [email protected] |
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WHAT DO YOU MEAN PART OF THE DECOMPRESSION ALGORITHM IS RECURSIVE |
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Post #ArCKXLbmv46PZcm60e by [email protected] |
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@sophia81 yeah, that's what I did (well, what I told Ghidra the "compi… |
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Post #ArCLbZeElLm6EFV1sm by [email protected] |
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@sophia81 hugs are nice and all but they cannot solve the problem of THIS COMPR… |
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Post #ArCP1Vg0S0kRIrNyvg by [email protected] |
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@foone this has to be a Bible Man ripoff |
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Post #ArCP1VqdoTFrpqMTVQ by [email protected] |
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@mmcknett it predates bibleman by a year! |
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Post #ArCQAktBMOn92oWNCS by [email protected] |
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ghidra is asking me philosophical computer science questions, like "can yo… |
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Post #ArCQZeQAXr0ADwp0L2 by [email protected] |
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I don't mean to alarm anyone, but I just realized the decompression algorit… |
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Post #ArCQhPxoBIiBhZGA3E by [email protected] |
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OH GOD I THINK IT USES A DOUBLERETURN |
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Post #ArCQl30lSXldftNCOe by [email protected] |
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double return is a secret feature never included in C, where you can do "r… |
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Post #ArCQpj5kwm4bLLwHRI by [email protected] |
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you of course can't really do this in Cbut you can in x86 assembly: pop you… |
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Post #ArCQtOZjAXvWs2hvAe by [email protected] |
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@foone It really sounds like someone wrote it in assembler. Or maybe a mix of C… |
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Post #ArCRnAK1Lk2ushxCmO by [email protected] |
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@foone Naughty naughty!😉 |
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Post #ArCTPCgT7F7dAK9hp2 by [email protected] |
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@foone TCL intentionally supports doing this. I don't know why. https://wik… |
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Post #ArCYljfxdJybd5Tut6 by [email protected] |
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oh goody the recursive function is using tagged pointers.15 bit pointers... |
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Post #ArCYr2dAaQEJrhhpiK by [email protected] |
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32kb ought to be enough for anyone! |
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Post #ArCa2zlt8wWyQU32MS by [email protected] |
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@foone Yes, but you do get longjmp, which can not only return to your caller, y… |
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Post #ArCaoXzdj1BGAp9e52 by [email protected] |
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@foone RET is nothing more than POP IP (and on some RISC processors that's … |
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Post #ArCcHYRjDg1hvlgkAS by [email protected] |
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@foone it's a good page size even for 8-bit cpus if you ROM is below 16kb �… |
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Post #ArCdmyFFRzY4sKOYqW by [email protected] |
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@foone trata a the size for Mac code segments for classic Mac in 68k… precise… |
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Post #ArCiUvIeA4Z4IcCMgy by [email protected] |
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@foone we have longjmp at home |
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Post #ArClWz63JcesW5ywsK by [email protected] |
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@foone you shouldn't ever need more numbers than you can store in your mind |
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Post #ArD810A07hPrUjXzsm by [email protected] |
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@foone missed opportunity to rename the format to WAB (Where’s All The Bible!… |
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Post #ArD810KzSqCs2ogm0m by [email protected] |
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@domi I know, right? |
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Post #ArE66cxdHm90WvHEPo by [email protected] |
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trying to get back to compression hacking and I can't find the source. ther… |
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Post #ArE9jIJuGFKTfbpCSm by [email protected] |
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AHHH HOW DO I SUPPORT HAVING AN ARRAY THAT'S ALSO SOME LOCAL VARIABLES IN P… |
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Post #ArE9pQb4Ouqd4smGyO by [email protected] |
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@foone and you adjust the compression level by telling it to cry harder? |
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Post #ArEAOIca2ug8Te70UK by [email protected] |
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@parsingphase this is a decompression implementation, even I am not mad enough … |
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Post #ArEBE7C5mFbC5vQimG by [email protected] |
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@foone Do you mean like:a = 6b = 7c = -3array = [a, b, c]? |
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Post #ArEBE7Mj8i6ccuPDM0 by [email protected] |
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@cazabon kinda, but I want array[1] to change b |
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Post #ArEBbJtki2xQ9kutTU by [email protected] |
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@foone @cazabon You could do that with object fields (either same object as the… |
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Post #ArEC5D8MQKf9rf0E0O by [email protected] |
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okay I have rewritten 90% of the decompression routine I don't understand i… |
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Post #ArEMlWelEEUo7IyPyq by [email protected] |
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@foone, the other 90%, surely. |
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Post #ArEqmH3TiUj4e1o9K4 by [email protected] |
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@foone the `locals()` built-in function returns IIRC an instance of the Namespa… |
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Post #ArFXSV8By7duXPpYjw by [email protected] |
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what the fuck does unaff_00000015 mean, ghidra?an unaffected... 15 constant? |
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Post #ArFXjPQsPRI9mqdHMW by [email protected] |
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it was caused because this function takes a parameter in BP. You're not sup… |
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Post #ArFXovgHwApXFgTPrk by [email protected] |
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@foone Ghidra called U Naff? Burn! |
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Post #ArFXtY8sshdlhC3I92 by [email protected] |
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if I instead tell it bp_parameter is a word, it just stops decompiling an iVar7… |
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Post #ArFbCvVUXIRxWZYdfM by [email protected] |
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@foone Concat() is the standard function for concatenating chars, packed char a… |
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Post #ArFbCvg7tkxO3YX8F6 by [email protected] |
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@riley this is the ghidra contact, which is a sort of pseudo-operation to repre… |
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Post #ArFdypy2dQ5I9Usvrs by [email protected] |
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@foone [insert fortran reassigning 1 gag] |
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Post #ArFjZS5srHL6axpdeS by [email protected] |
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@foone I appreciate that you give us credit for knowing what you're talking… |
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Post #ArGE756JqigTkpzGjI by [email protected] |
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I caught myself thinking "at this rate, maybe I should just write an x86 m… |
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Post #ArGECVXuxEPDDjU3Oa by [email protected] |
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my brain is constantly coming up with weirder and worse solutions to this "… |
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Post #ArGEFnOP3e0ZRIbKt6 by [email protected] |
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anything to avoid having to reverse decompression |
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Post #ArGEKvJn1BGfT4t8qW by [email protected] |
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I haven't even completed this script enough for it to run, and already I… |
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Post #ArGEOeNJxCLg4vJivA by [email protected] |
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I might even switch to my terrible "implement bochcpu-lib emulation from p… |
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Post #ArGEd9uNVjxfvmhJlA by [email protected] |
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@foone this is me halfway into anything I’ve ever written in Python |
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Post #ArGKce6oL97N21eSmW by [email protected] |
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okay I wrote a module to let me define some memory and then define multiple var… |
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Post #ArGKg95DdPmXxvZkvY by [email protected] |
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so basically I removed type safety from python, kinda. |
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Post #ArGKjcGfaDgtLhaR7o by [email protected] |
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but this'll make it way easier to port the decompiled decompression routine… |
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Post #ArGKrORIsgaomGGjcO by [email protected] |
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I'm gonna have two of these Memory objects for DS and ES, and since I haven… |
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Post #ArGKuxDo1A6tWOeZlI by [email protected] |
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if it does end up mattering, I'm gonna cry a lot, then implement OVERLAPPIN… |
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Post #ArGSHFR5g49y3uRe6a by [email protected] |
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@foone So you implemented the FORTRAN "COMMON" block in python?(I kee… |
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Post #ArGTFSzCQYWjSi762a by [email protected] |
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@SvenGeier pretty much! |
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Post #ArH26hcc8i8Kdx6cme by [email protected] |
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@foone |
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Post #ArHO5HuKSOqDat7e9w by [email protected] |
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My everything hurts, I'm starving and can't eat, my brain is fogged, an… |
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Post #ArHOEswi7PHj4ZoRyi by [email protected] |
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I should build an x86 usb device. It's stupid because I literally am on an … |
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Post #ArHPOXOdC6yf5V2TCa by [email protected] |
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@foone this is how x86 came to be in the first place, right? Godspeed. |
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Post #ArHQ212GvheQJ3PBDc by [email protected] |
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@foone did you ever look at dosemu2 by chance? :) |
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Post #ArHQ21BqM7J6mjsp8a by [email protected] |
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@jschwart I wrote a bunch of now abandoned code that uses it, yeah. I was embed… |
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Post #ArHSQOOfvMSLcPdSmO by [email protected] |
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@foone nice!! It would seem great if you could share this. Might it make sense … |
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Post #ArHSQOa1FBWwBawWSe by [email protected] |
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@jschwart I never finished cleaning it up into a releasable state, but I will i… |
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Post #ArHSWqNmmrPy9UIOvY by [email protected] |
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@[email protected] Would you like well-meaning suggestions of "easy food… |
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Post #ArHSWqXMDH4edAm2qW by [email protected] |
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@smh nah. Not needed. This is a medical issue I know the bounds of well enough. |
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Post #ArHcAfFAWItomAKNuK by [email protected] |
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I finally went and confirmed something I assumed:The compression routines from … |
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Post #ArHcV1eIvWrc3ZnHIO by [email protected] |
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@foone can you give the address of the decompression function for those who wan… |
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Post #ArHcV1oaJJ5SZSbUJs by [email protected] |
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@r 1000:cd0b in bible builder, 1000:9ca4 in captain bible |
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Post #ArHcWEslDBzVO88Nk0 by [email protected] |
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okay it was recompiled/reassembled: some globals are in different locations.but… |
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Post #ArHdTJX7YyAitlBK40 by [email protected] |
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@foone what the actual fack. You .. can't do that.. that's illegal!`lol… |
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Post #ArHdTJhkvQg9Qk9odk by [email protected] |
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@tezoatlipoca the only rule of of x86 assembly is to have fun and be yourself |
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Post #ArHfMhvCgltcQ2QK2a by [email protected] |
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@foone reproducible builds in the early 90s? |
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Post #ArHfMi5q3EP2x1OocK by [email protected] |
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@KormaChameleon heh. no, I think it's just that they assembled it to an OBJ… |
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Post #ArHicgazgbg4noHVfU by [email protected] |
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alright, I ported over enough of the decompression algorithm for it to run for … |
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Post #ArHiiIwIYLUjAevRBo by [email protected] |
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it "decompressed" to the compressed input, but with 3 bytes missing f… |
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Post #ArHioWvbSKIEIHZKhE by [email protected] |
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if you decompress a file and it gets smaller, you fucked up.(or it has really h… |
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Post #ArHj5tbIPgz3XBLp4K by [email protected] |
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@foone Close enough for government work. Ship it! |
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Post #ArHjArHmRmNhnqaaPY by [email protected] |
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@foone Wait a second... How did you get your hands on the very thing I'm wo… |
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Post #ArHjjhik0BNiGxocJk by [email protected] |
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@foone G stands for GOODENOUGH! |
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Post #ArHkKkUeehx1aRtIlU by [email protected] |
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@lunarood would you like to make a contract? |
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Post #ArHlEp0l2t0bobe1OS by [email protected] |
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@foone Nooooo!!! I know what you're scheming at! How dare you!I've work… |
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Post #ArHlUuLSyuyQzY08ae by [email protected] |
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@foone wasn't there some mathematical proof, that an algorithm, that compre… |
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Post #ArHlYDHJ2uSAa0dD4C by [email protected] |
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after fixing some bugs, I am now correctly decompressing an entire 8 bytes! |
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Post #ArHqaOuBHsx4zSg3JA by [email protected] |
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I suspect the tables aren't getting filled in correctly. I'm gonna need… |
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Post #ArI6OAJLJxh9WEdNY0 by [email protected] |
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@foone The idea of a USB dongle containing a tiny x86 microprocessor is incredi… |
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Post #ArIHDOzRVGrzM6Ocuu by [email protected] |
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ran though about 300 iterations and the word table never gets filled in. on eit… |
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Post #ArSnUORvuEnyiST30S by [email protected] |
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@foone emulate the decompression w unicorn (I’ve done this, but also it was p… |
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Post #ArSnUOcZGhJPFRRXaC by [email protected] |
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@Li same! |
