Introduction
Introduction Statistics Contact Development Disclaimer Help
Post Alb8plsjuap38hNaPg by [email protected]
More posts by [email protected]
Post #AlXhHGAA3VDGgLy3Ps by [email protected]
0 likes, 0 repeats
maybe I'd be better at getting back into my reverse engineering projects if…
Post #AlXhNeJ3ChcVIbAkFc by [email protected]
0 likes, 0 repeats
okay it's not 10.1-beta, because that one was used to hack on Spyro for the…
Post #AlXhWetWO0LZjIWkZE by [email protected]
0 likes, 0 repeats
10.1 non-beta was Railroad Tycoon and "MyPetChimp", whatever that was.
Post #AlXhWhdKCgAqDvyMEq by [email protected]
0 likes, 0 repeats
10.1.5 was the DS9 point and click game and a WinCE powered printer
Post #AlXhnpPYXSBLGlhMDg by [email protected]
0 likes, 0 repeats
10.1.4 was an aliexpress single-key-keyboard and some parts of the Borland Grap…
Post #AlXhns5SactDZJJqoS by [email protected]
0 likes, 0 repeats
10.0.4 was SOLELY for a GBA DBZ game
Post #AlXhvfwfcHRWECvfJA by [email protected]
0 likes, 0 repeats
@foone There's no upgrade path for projects? ._.(Was thinking of getting ba…
Post #AlXiAvPOPGv8WwdRmC by [email protected]
0 likes, 0 repeats
9.2.2 was a vape unit I was trying to run Doom on, Duke Nukem 1 for DOS, and Li…
Post #AlXiN9ZBar91up2yHI by [email protected]
0 likes, 0 repeats
@cr1901 There is, but the extensions (for console CPUs and such) are tied to th…
Post #AlXiNCDfjIia8y0Kf2 by [email protected]
0 likes, 0 repeats
@cr1901 and I could PRESUMABLY manually build new extension versions myself fro…
Post #AlXiNCzsq3HaYUYpo8 by [email protected]
0 likes, 0 repeats
@cr1901 until I end up with 13 versions installed and it's now a disaster
Post #AlXimDlf6uU4BWpsTQ by [email protected]
0 likes, 0 repeats
@foone Buu's Fury?
Post #AlXimDrgkVIwUDegro by [email protected]
0 likes, 0 repeats
@endrift I think it was Dragon Ball Z: The Legacy of Goku II
Post #AlXisAD1Fr1gswSvCq by [email protected]
0 likes, 0 repeats
@overanalytcl I explain here:https://digipres.club/@foone/113059464273865702
Post #AlXj3Zf8xWbt0u3rhQ by [email protected]
0 likes, 0 repeats
ah-ha! It was 10.2.2
Post #AlXjDrgcnkspoFf3aK by [email protected]
0 likes, 0 repeats
@foone Good to know your user experience so that I may adjust mine accordingly.…
Post #AlXjco9T54Ys5P2vBI by [email protected]
0 likes, 0 repeats
@foone please tell me the printer could run Pocket Office, hopefully by printin…
Post #AlXjjeXZDJluIva9bs by [email protected]
0 likes, 0 repeats
@[email protected] Have you ever played doom on a normal device? do you even …
Post #AlXjjedaquambcOy0G by [email protected]
0 likes, 0 repeats
@nex yeah I've played it on DOS computers! that's relatively normal, if…
Post #AlXjs9Uc19XgcNFjfc by [email protected]
0 likes, 0 repeats
@cr1901 yeah, they're java.
Post #AlXkLjTzHqm0dX48Js by [email protected]
0 likes, 0 repeats
okay now I can see why may2023!foone got stuck here. this is so fucking complic…
Post #AlXkc3iVp9hk1de1Sa by [email protected]
0 likes, 0 repeats
I'm trying to decode a scripting language for a video game, but the problem…
Post #AlXkc6MzxbHIFmbNqK by [email protected]
0 likes, 0 repeats
especially because it's doing this kind of... in-place relocation thing?
Post #AlXkc79Z327sgPKAXg by [email protected]
0 likes, 0 repeats
like the bytecode will be:pvm_Call 0, 0and then the relocations will kick in an…
Post #AlXkc7wU79G388DEnI by [email protected]
0 likes, 0 repeats
but because this is all done in an in-place loading style, it's really a pa…
Post #AlXkc8iLFDXTWYbSO8 by [email protected]
0 likes, 0 repeats
it's also a typed VM, so that makes it even more complicated. (Because the …
Post #AlXlRbsGaUVwjOmwNc by [email protected]
0 likes, 0 repeats
@overanalytcl @cr1901 Yes. unless you also had an extension that only worked on…
Post #AlXm3dNHSSoKO8QUSG by [email protected]
0 likes, 0 repeats
@foone heh, this sounds like .NET
Post #AlXmDlflSck71Ju7SC by [email protected]
0 likes, 0 repeats
@gsuberland yeah, but the weird thing is that .net is a whole professional prog…
Post #AlXmV2oeyVEB73IqVk by [email protected]
0 likes, 0 repeats
@foone yeah, certainly seems like they put a ton of effort into it. any evidenc…
Post #AlXmzDEApUl25hccts by [email protected]
0 likes, 0 repeats
huh. this game has a "SILENCE LOADING ERRORS" flag. there's no wa…
Post #AlXn6JhTABdEByiEeO by [email protected]
0 likes, 0 repeats
@gsuberland Nope. All I can tell is that it's in-house, but they seem to ha…
Post #AlXnGS5GqZoj5eg6wC by [email protected]
0 likes, 0 repeats
@foone Terse flag!
Post #AlXnOwW3aLmdn3FviS by [email protected]
0 likes, 0 repeats
oh god. I thought I'd fill out the resolveTypes function of module loading …
Post #AlXpSQNVDPMLBO2hjU by [email protected]
0 likes, 0 repeats
oh godif( fixup_passes>=64 ){ btype_failure = true; }
Post #AlXphKSlUQarBHbxDc by [email protected]
0 likes, 0 repeats
SIXTY FOUR FUCKING FIXUP PASSES?
Post #AlXqGZWBVUcM0d12P2 by [email protected]
0 likes, 0 repeats
@foone I'm sorry, what the fuck?
Post #AlXs43Xwkb15Hh02m8 by [email protected]
0 likes, 0 repeats
I think these guys wrote their scripting language so that array types have a de…
Post #AlXsGGHTEMdKFo74gy by [email protected]
0 likes, 0 repeats
the worst thing about this particular scripting language is that it's compi…
Post #AlXtf5W8UBqg47NIOm by [email protected]
0 likes, 0 repeats
@foone I would love to know the rationale behind these design choices. Then I r…
Post #AlXtygfiZQRengCbWC by [email protected]
0 likes, 0 repeats
@foone The HD-rerelease will have 128 fixup passes.
Post #AlXtygnA7kOrAlgY7c by [email protected]
0 likes, 0 repeats
@AT1ST @foone turning a dial taht says "more fixup passes" while star…
Post #AlXtygttihmtVepvcW by [email protected]
0 likes, 0 repeats
@rotopenguin @foone Plot twist: the dial is just the "Spin the Wheel"…
Post #AlXtygzvMIbloLek0u by [email protected]
0 likes, 0 repeats
@AT1ST @rotopenguin the funny thing is that you're not that far off.I'm…
Post #AlXu137Q5JM2zsHmy0 by [email protected]
0 likes, 0 repeats
WFCommonJunction::getProfileGenderMY GENDER IS BETWEEN ME AND GOD, YOU CANNOT K…
Post #AlXuIRWWbJxtbuK3lI by [email protected]
0 likes, 0 repeats
this game has been out for 14 years and no one has figured out the cheat codes …
Post #AlXuTIHvHLAa9VfOwC by [email protected]
0 likes, 0 repeats
@foone The relation between gender and a floppy disk is between gender and that…
Post #AlXui3hPnmEpFXdBCq by [email protected]
0 likes, 1 repeats
@clayote and I keep my gender on a floppy disk! wait. shit. oh no... this expla…
Post #AlXvAxnOpVnfL2DGKG by [email protected]
0 likes, 0 repeats
@foone why are all these ghidra versions not interchangeable?
Post #AlXvfentUXvPPe51nc by [email protected]
0 likes, 0 repeats
@foone lol nvm. I finally read to the relevant parts of the thread. https://dig…
Post #AlXvfeud5VJRkXEPIW by [email protected]
0 likes, 0 repeats
@davejmurphy Ghidra just refuses to load incorrect-version extensions, even if …
Post #AlXvt3ErxCfqxf5I4u by [email protected]
0 likes, 0 repeats
@foone @rotopenguin Is this the one with that one anime avatar image in the bun…
Post #AlXvt3MJVWd3KkZEgK by [email protected]
0 likes, 0 repeats
@AT1ST @rotopenguin different one! no incest anime here.
Post #AlXw44wlwYcRRbsUpk by [email protected]
0 likes, 0 repeats
I think I officially did too much Rust programming. I'm back on my home tur…
Post #AlXxUyzsH0EalPinvU by [email protected]
0 likes, 0 repeats
@foone Just switch to Python 3.10 or later? Which has a match expression? https…
Post #AlXxc8snuqObS3pQY4 by [email protected]
0 likes, 0 repeats
@clayote probably should do that yeah.
Post #AlXyD58EpDQ4X4f5XM by [email protected]
0 likes, 0 repeats
okay it kind of does relocation backwards. my understanding is that the way thi…
Post #AlXyLixSdVHSMrk39c by [email protected]
0 likes, 0 repeats
this instead steps through the entire code looking for specific bytecode opcode…
Post #AlXzeY8NCgSSFoO1Me by [email protected]
0 likes, 0 repeats
I'd love to do more logging on what the game is actually doing at runtime, …
Post #AlXzoBb3qr8HFfOrSq by [email protected]
0 likes, 0 repeats
plus the debug logging capabilities of the emulator are abysmal
Post #AlY0aXP05AqOmQoYtM by [email protected]
0 likes, 0 repeats
oh godplease tell me you fools didn't design a bytecode VM with DELAY SLOTS
Post #AlY1C1GrzfDk8Csss4 by [email protected]
0 likes, 0 repeats
@foone wat
Post #AlY1TakzJNNR6yLoVU by [email protected]
0 likes, 0 repeats
ahh, it uses a 24bit addressing scheme. nice.
Post #AlY1dYSahnrkssUqdE by [email protected]
0 likes, 0 repeats
or rather, it's an encoding scheme where they tag their pointers. and if th…
Post #AlY1xTqNZvi4MI7mfg by [email protected]
0 likes, 0 repeats
so this resolveRefs function iterates through all the code and it sometimes set…
Post #AlY26ji3xW7OAieFOq by [email protected]
0 likes, 0 repeats
so, this specific bytecode looks like this:pvm_PushConstant 0 and you might thi…
Post #AlY2I8NyYR8Zt9ggkK by [email protected]
0 likes, 0 repeats
@foone Ah delay slots, the most annoying feature of RISC designs to be exposed …
Post #AlY35wEW0mPCg30jiq by [email protected]
0 likes, 0 repeats
@foone This is important in case the value of 0 ever changes
Post #AlY4FqOafbKXQG0jLs by [email protected]
0 likes, 0 repeats
@foone I've always been of the opinion that the death penalty for pointer t…
Post #AlY4yevGAo6Ms2f2xM by [email protected]
0 likes, 0 repeats
for (iVar2 = 0; iVar2 < (int)(uint)*(ushort *)(((uint)((PVOpCode *)pdata + 4…
Post #AlY5CqQWCKOMbX2vDM by [email protected]
0 likes, 0 repeats
You know you've got a great decompiler when it's way easier to figure o…
Post #AlY5Qq866DPJjl6T0i by [email protected]
0 likes, 0 repeats
@foone https://types.pl/users/ionchy/statuses/112754152834331137
Post #AlY5mWWLgXO5IAmoPA by [email protected]
0 likes, 0 repeats
@foone Yo, I heard you like numbers, so I cast your number to a number and cast…
Post #AlY6cLBt3T81D8vL5U by [email protected]
0 likes, 0 repeats
okay I got most of the relocation step finished. I haven't managed the swit…
Post #AlY6pNDapOanGPw6vQ by [email protected]
0 likes, 0 repeats
@foone «I mean, yes, but actually no»
Post #AlY7ndkkTsynv8BLI8 by [email protected]
0 likes, 0 repeats
@foone "The plot is mediocre, but the cast is spectacular"
Post #AlY9JqiZuerbLr5aLI by [email protected]
0 likes, 0 repeats
@foone Railroad Tycoon? Anything interesting in there? (3 remains one if my fav…
Post #AlYCKHvL3uE5aixUWW by [email protected]
0 likes, 0 repeats
@foone this. Well there's now a match statement in python, but it's mor…
Post #AlYSanoDsbZsNiWiUi by [email protected]
0 likes, 0 repeats
@foone is this. is this wheel of fortune
Post #AlYZylw7C36nCcaws4 by [email protected]
0 likes, 0 repeats
@foone Is `fixup_passes` a 6-bit variable, though
Post #AlYgZHe7NGAPhMyDE8 by [email protected]
0 likes, 0 repeats
@foone @clayote my gender is largely factory spec but there's a big screwdr…
Post #AlYjJF2vZXugrecJIe by [email protected]
0 likes, 0 repeats
@foone @clayote If you put magnets on it.. Could be interesting..
Post #AlYqcXoqhN9QGjBPo8 by [email protected]
0 likes, 0 repeats
@petrapup yes
Post #AlYqmZccqmxGkwFR6u by [email protected]
0 likes, 0 repeats
@foone uh oh, I bet the original implementation was recursive and they blew the…
Post #AlYvBc4FILMzOfMWMC by [email protected]
0 likes, 0 repeats
@foone Reminds me of a game I was looking at which used a virtual filesystem wi…
Post #AlYy01FS9CEJsgleXw by [email protected]
0 likes, 0 repeats
@misty yikes.
Post #AlZ3iID6wWZj07bQu0 by [email protected]
0 likes, 0 repeats
@foone @misty A Professor teaching software engineering, or maybe anthropology,…
Post #AlZAqtkvvtalRTTPt2 by [email protected]
0 likes, 0 repeats
@foone lol, I don’t use Ghidra much for a variety of reasons but a friend onc…
Post #AlZKciexOJtsVyYVqS by [email protected]
0 likes, 0 repeats
@foone apparently glitch genders are a thing in some games
Post #AlZKcikd3ERAnZD2ga by [email protected]
0 likes, 0 repeats
@f00fc7c8 and some people!
Post #AlZKhEMBU3FrypvTSS by [email protected]
0 likes, 0 repeats
@blackBoxRE oooooh
Post #AlZOi9dqtoPFSlt08O by [email protected]
0 likes, 0 repeats
@foone @clayote Spotted your problem: that little tab is down in the left upper…
Post #AlZwlrqWOyTjs2koy0 by [email protected]
0 likes, 0 repeats
the fixup of the switchtable is unrolled.now, I'm looking at disassembly, …
Post #AlZy0LaAjv0w6XZiq0 by [email protected]
0 likes, 0 repeats
I can't figure out whatever this shit is doing.
Post #AlZyEMX20TqX6Rmz5c by [email protected]
0 likes, 0 repeats
pdata points to the beginning of the instruction, which looks like this:6E 7F 7…
Post #AlZySM52TxCnkzMsy0 by [email protected]
0 likes, 0 repeats
but the next time it gets called, it's:6E 7F 7F 00 44 00 04 02 00 00 00 00 …
Post #AlZyZpvVudHqLoTpXU by [email protected]
0 likes, 0 repeats
ugh I think the thing that's weird here is the &0xfffffffcIt's doin…
Post #AlZyjn4jMuGoP4XP4C by [email protected]
0 likes, 0 repeats
@foone is it using useless_boolean to check if the loop is run at all?
Post #AlZyraZxiHF5xnrfIu by [email protected]
0 likes, 0 repeats
and that first bit of code is at 0x70, which is a multiple of 4, so 0x70+4 just…
Post #AlZz6I150jEajiYgYC by [email protected]
0 likes, 0 repeats
so this is a bytecode that has variable padding in order to align to 4 bytes. u…
Post #AlZzJrXmES62gfKAm8 by [email protected]
0 likes, 0 repeats
@nickzoic useless_boolean is never checked at any point
Post #AlZzTDSA8uEPFD9sY4 by [email protected]
0 likes, 0 repeats
@foone as countless historians have said, we believe this was done for ritualis…
Post #AlZzaELTDyLc2QNB0i by [email protected]
0 likes, 0 repeats
@foone We call that a pseudoregister. #mips
Post #AlZzfiYgJuwBBrAWo4 by [email protected]
0 likes, 0 repeats
@foone Python switched to everything-is-2-byte bytecode in 3.6. And I'm pre…
Post #AlZzo8jisHvshGLiUK by [email protected]
0 likes, 0 repeats
oh, I think I've got what EnterFrame is: It's a way to easily shove mul…
Post #Ala003MuermtWWMR28 by [email protected]
0 likes, 0 repeats
yeah, it ends up looking like:pvm_EnterFrame int, int, bool, GuiAnim
Post #Ala0DQHam76oM5FOKm by [email protected]
0 likes, 0 repeats
@foone @nickzoic The compiler should optimize it away.
Post #Ala0MuIeXdKw3eGXce by [email protected]
0 likes, 0 repeats
okay now I have a disassembler that can only disassemble the relocatable instru…
Post #Ala0UUeBnjpUoXxNRY by [email protected]
0 likes, 0 repeats
@grumpygamer @nickzoic it sure should, but since I'm looking at disassembly…
Post #Ala0oCfWM2zAqXyhAu by [email protected]
0 likes, 0 repeats
@foone wow you need a pvm to run that game
Post #Ala0ymvUP9XiC2Ui8m by [email protected]
0 likes, 0 repeats
@foone `useless_boolean` lol
Post #Ala1KXau5bd10qEoqG by [email protected]
0 likes, 0 repeats
ugh. apparently EnterFrame also adds a frame pointer (somewhere) and then the p…
Post #Ala1Pngrfi6GNjXBOS by [email protected]
0 likes, 0 repeats
Food $200Data $150Rent $800Stacks $3,600Utility $150someone who is good at inte…
Post #Ala3Rdp7WkW2GfOwS0 by [email protected]
0 likes, 0 repeats
@0xSim no
Post #Ala3uUGw7NAF2iAP2m by [email protected]
0 likes, 0 repeats
anyway I'm now at the point where I've written enough of a disassembler…
Post #Ala42MkDzOYM0rcgRk by [email protected]
0 likes, 0 repeats
@athompso I think the answer is "my compiler crashes"
Post #Ala4ALXEN1HOZuLnPs by [email protected]
0 likes, 0 repeats
@foone useless_boolean will detect if the for loop never ran at all, because of…
Post #Ala4KH7fd6qln18568 by [email protected]
0 likes, 0 repeats
@RueNahcMohr useless_boolean is actually never read by any code. thus the &quot…
Post #Ala4khG94otsNdgyie by [email protected]
0 likes, 1 repeats
@foone .....huh, ok, maybe the author didn't turn out to actually need it i…
Post #Ala54eufVhJotXAJ7Y by [email protected]
0 likes, 0 repeats
@RueNahcMohr yeah! and apparently their compiler didn't warn them about thi…
Post #AlaZb3uR6iyIJKQKbg by [email protected]
0 likes, 0 repeats
@foone This is relatively common, because a bunch of old (mostly, pre-C) machin…
Post #AlaZb406ldVaav4rRo by [email protected]
0 likes, 0 repeats
@riley I know of it in ram addressing, but not so much in files.Though I guess …
Post #AlaZkexAkPhNo7HPyi by [email protected]
0 likes, 0 repeats
@pndc yeah, it's a Wii game, so it's PowerPC.
Post #Alaoj2PM4VnDHe9AbA by [email protected]
0 likes, 0 repeats
@foone @clayote I stored mine in the blockchain and a scammer stole it
Post #Alb4ELLDE9LmIFawKm by [email protected]
0 likes, 0 repeats
@foone @clayote that's okay, can be reformatted!
Post #Alb66Rt7CbOYBooeVk by [email protected]
0 likes, 0 repeats
@foone @clayote Held on with magnets of course :)
Post #Alb8plsjuap38hNaPg by [email protected]
0 likes, 0 repeats
@foone It looks like it's trying to win an obfuscated coding contest.
You are viewing proxied material from pleroma.anduin.net. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.