Just Cause *.ARC file decompression

[Rocky5]

does anyone know how to convert a little-endian file into a big-endian file i want to replace Ricos model but the pc versions are little-endian and don't work all dds files work fine they don't need to be big-endian it seems.

if your wondering the tools for the PC version work on the 360 version but alot of the files are unknown also you need a Jtaged 360 or hacked dvd firmware to use mods.

any help/info would be much appreciated thank you.

[tgp1994]

does anyone know how to convert a little-endian file into a big-endian file i want to replace Ricos model but the pc versions are little-endian and don't work all dds files work fine they don't need to be big-endian it seems.

if your wondering the tools for the PC version work on the 360 version but alot of the files are unknown also you need a Jtaged 360 or hacked dvd firmware to use mods.

any help/info would be much appreciated thank you.

I think it's best if you made your own topic for that. I'm still waiting for my answer in this one.

[chrrox]

you need to map out every part of the file and what it does to reverse the endian of a file.

[tgp1994]

you need to map out every part of the file and what it does to reverse the endian of a file.

Chrrox, can you maybe help me with my problem?

[chrrox]

you would need to reverse the exe to see how the data is accessed i do not know how to do this

[Rick]

I think it's best if you made your own topic for that. I'm still waiting for my answer in this one.

Are you looking for .arc extraction or something else? This is the first time I've written a BMS script.

Code: Select all

# script for QuickBMS http://aluigi.org/papers.htm#quickbms

endian little

get header_count long 0

# block alignment
if header_count > 1
	get block_alignment long 0
else
	set block_alignment 2048
endif

# archive count
if header_count > 2
	get archive_count long 0
else
	set archive_count 1
endif

set header_size header_count
math header_size *= 4

get file_count asize
math file_count -= header_size
math file_count /= 12

print "Alignment of %block_alignment%."
print "%archive_count% archives."
print "%file_count% files."

print "Getting %archive_count% archive sizes..."
set total_block_count 0
for i = 0 < archive_count
	get archive_path basename
	String archive_path += i
	String archive_path += ".arc"
	open FDSE archive_path 1
	
	get archive_block_count asize 1
	math archive_block_count /= block_alignment
	math total_block_count += archive_block_count
	
	putarray 0 i total_block_count
	print "%total_block_count%"
next i

print "Getting %file_count% file entries..."
for i = 0 < file_count
	get entry.name_hash long 0
	putarray 1 i entry.name_hash
	get entry.block_offset long 0
	putarray 2 i entry.block_offset
	get entry.size long 0
	putarray 3 i entry.size
next i

print "Extracting archives..."
set archive.block_offset 0
for i = 0 < archive_count
	get archive.path basename
	string archive.path += i
	string archive.path += ".arc"
	
	print "Extracting archive %archive.path%..."
	open FDSE archive.path 1
	
	getarray archive.block_count 0 i
	
	for j = 0 < file_count
		getarray entry.block_offset 2 j

		if entry.block_offset >= archive.block_offset		
			if entry.block_offset < archive.block_count
				getarray entry.name_hash 1 j
				getarray entry.size 3 j
				
				get entry.path basename
				string entry.path += i
				string entry.path += "/"
				string entry.path += entry.name_hash
				
				set entry.offset entry.block_offset
				math entry.offset -= archive.block_offset
				math entry.offset *= block_alignment
				
				log entry.path entry.offset entry.size 1
			endif
		endif
	next j
	
	set archive.block_offset archive.block_count
next i

To use, quickbms.exe extract_jc1.bms pc.tab extracted or whatnot.

To do filenames you'll need to figure out what algorithm the game is using to hash the names, it isn't Jenkins hashlittle() like Just Cause 2.

I know that "weapons_pc.bin" is hashed to 0xBB02F83B.

[chrrox]

I think what they want is someone to map all the files out so they can port all the extracted resources from the pc to the xbox.
but very nice script.

[Rocky5]

sorry i miss read the thread name this was for just cause 2

extraction of arc files is done both using BMS Script and now an actual program here.

The problem i have is the xbox 360 has Big-Endian coded files now the PC doesn't well we all know this but dds textures (L-E) work on the x360 so no need to convert but models, bin files and such must be Big-Endian or they wont load when the game is started, hens why i wanted to know how to convert them if possible.

I can give any resources needed (bar rbm files as these are not decrypted in the arc file yet will need to find them first 18000+ unknown files lol) for some one to see if they can convert the dds (textures) files to big-endian as bin (xml) files can already be converted to B-E.

[Rick]

extraction of arc files is done both using BMS Script and now an actual program here.

The problem i have is the xbox 360 has Big-Endian coded files now the PC doesn't well we all know this but dds textures (L-E) work on the x360 so no need to convert but models, bin files and such must be Big-Endian or they wont load when the game is started, hens why i wanted to know how to convert them if possible.

I can give any resources needed (bar rbm files as these are not decrypted in the arc file yet will need to find them first 18000+ unknown files lol) for some one to see if they can convert the dds (textures) files to big-endian as bin (xml) files can already be converted to B-E.

I recently committed updates to my file lists to include more 360 and PS3 content.

And I thought this thread was for Just Cause 1?

[Rocky5]

extraction of arc files is done both using BMS Script and now an actual program here.

The problem i have is the xbox 360 has Big-Endian coded files now the PC doesn't well we all know this but dds textures (L-E) work on the x360 so no need to convert but models, bin files and such must be Big-Endian or they wont load when the game is started, hens why i wanted to know how to convert them if possible.

I can give any resources needed (bar rbm files as these are not decrypted in the arc file yet will need to find them first 18000+ unknown files lol) for some one to see if they can convert the dds (textures) files to big-endian as bin (xml) files can already be converted to B-E.

I recently committed updates to my file lists to include more 360 and PS3 content.

And I thought this thread was for Just Cause 1?

oh my bad lol sorry will make a new thread for Just Cause 2 Xbox 360 files.

and thank you for making these tools its much appreciated.

x360 eez support thanks man only need the dds and almost everything on the pc can be ported.

[tgp1994]

sorry i miss read the thread name this was for just cause 2

And I thought this thread was for Just Cause 1?

Ya, I guess Rocky5 misread it again.

Are you looking for .arc extraction or something else? This is the first time I've written a BMS script.

To use, quickbms.exe extract_jc1.bms pc.tab extracted or whatnot.

To do filenames you'll need to figure out what algorithm the game is using to hash the names, it isn't Jenkins hashlittle() like Just Cause 2.

I know that "weapons_pc.bin" is hashed to 0xBB02F83B.

I have no idea how to figure out hashes. I was kind of hoping the actual plugin would be fixed, too. Where were you guys a month ago

oh my bad lol sorry will make a new thread for Just Cause 2 Xbox 360 files.

and thank you for making these tools its much appreciated.

x360 eez support thanks man only need the dds and almost everything on the pc can be ported.

Ported to what from the PC? XBox 360? I'm pretty sure there's a reason they make separate versions of the game.

[AlphaTwentyThree]

The contents of this post was deleted because of possible forum rules violation.

[Rick]

My script will probably work if you switch quickbms into big endian mode.

[AlphaTwentyThree]

My script will probably work if you switch quickbms into big endian mode.

No, doesn't work. The PC version has a different structure than the Xbox 360 version. Try it on the sample file, you'll see that quickbms throws an error about not being able to open a certain file ( Error in myfopen() ).

[aluigi]

I have not fully understood if it was jc1 or jc2 (the format is enough similar) anyway I updated my justcause2 script to work with the archive you provided.
but note that I used a work-around because the tab file contains also invalid offsets:
http://aluigi.org/papers/bms/justcause2.bms