This topic was archived here:

https://web.archive.org/web/20230000000000fw_/https://www.zenhax.com/viewtopic.php?t=7486

Hocmai, posted Sat Mar 03, 2018 2:43 am (32845)

---

How to extract the .obb file of the game Field. Thanks!

This is the file: http://www85.zippyshare.com/v/gWTzCeRY/file.html

aluigi, posted Thu Mar 08, 2018 3:21 am (32963)

---

They are just zip files.

Hocmai, posted Sat Mar 10, 2018 3:42 am (33014)

---

aluigi wrote:

They are just zip files.

But when extracting it, you see the files like in the image:

Hocmai, posted Sat Mar 10, 2018 3:44 am (33015)

---

I do not know how to view and edit it. Hope you help me!. Thank you so much!

aluigi, posted Sat Mar 10, 2018 2:01 pm (33033)

---

The files in the obb you uploaded are xored with 0xf8:

Code:

filexor 0xf8
get SIZE asize
get NAME filename
string NAME   .
log NAME 0 SIZE

I can't know if the same obfuscation is used in the files of the other obb too.

*edit* fixed

Hocmai, posted Sun Mar 11, 2018 12:38 am (33053)

---

aluigi wrote:

The files in the obb you uploaded are xored with 0xf8:

Code:

filexor 0xf8
get SIZE asize
get NAME filaneme
string NAME   .
log NAME 0 SIZE

I can't know if the same obfuscation is used in the files of the other obb too.

I get this error:
Error: invalid datatype filaneme at line 3
Last script line before the error or that produced the error: 3 get NAME filaneme

Acewell, posted Sun Mar 11, 2018 6:22 am (33065)

---

typo, line 3 should be

Code:

get NAME filename

Hocmai, posted Sun Mar 11, 2018 7:27 am (33067)

---

Acewell wrote:

typo, line 3 should be

Code:

get NAME filename

Thank you! Acewell. But I just get the .dat file. It does not extract the parts inside the .obb file that I need. Can you help me!

aluigi, posted Sun Mar 11, 2018 8:51 am (33073)

---

Because you are using it incorrectly, I already told you that obb is just a zip.
Extract obb as a zip and THEN use the script on all the extracted files.

Hocmai, posted Sun Mar 11, 2018 9:17 am (33075)

---

aluigi wrote:

Because you are using it incorrectly, I already told you that obb is just a zip.
Extract obb as a zip and THEN use the script on all the extracted files.

Thank you! Aluigi. I extracted it in a nice way, I actually used it incorrectly . Your script is very effective! Thank you again!

aluigi, posted Sun Mar 11, 2018 11:16 am (33082)

---

*edit* wrong, ignore.

Just for information, there is also a second way to the job.
Download http://aluigi.org/bms/zip.bms
Open it with a text editor and put the following line just at the beginning (first line):
encryption xor "\xf8"
Use the modified zip.bms with quickbms on the obb file, all the extracted files will be already decrypted.

Hocmai, posted Sun Mar 11, 2018 12:47 pm (33086)

---

aluigi wrote:

Just for information, there is also a second way to the job.
Download http://aluigi.org/bms/zip.bms
Open it with a text editor and put the following line just at the beginning (first line):
encryption xor "\xf8"
Use the modified zip.bms with quickbms on the obb file, all the extracted files will be already decrypted.

Thank you! It will give me more options.

Hocmai, posted Sun Mar 11, 2018 2:21 pm (33092)

---

Unluckily! I get this error from cmd when extracting this game file:
Error: the compressed zlib/deflate input is wrong or incomplete (-3)
Info: algorithm 2
offset 00000026
input size 0x0000047a 1146
output size 0x00001443 5187
result 0xffffffff -1

Error: the uncompressed data (-1) is bigger than the allocated buffer (5187)

Last script line before the error or that produced the error: 220 CLog name offset comp_size uncomp_size

This is the file: http://www116.zippyshare.com/v/GxUU6tJh/file.html

aluigi, posted Sun Mar 11, 2018 4:05 pm (33095)

---

Right, my fault.
The encryption of the game is post-extraction, not before extraction (as used in zip.bms), so that solution can't work.
Forget it, use the normal method

Hocmai, posted Mon Mar 12, 2018 12:58 am (33114)

---

Aluigi! I see how your 1st one will need improvement. By! If you do so, you can only extract one file at a time. It will take more time, instead you can do it extracted all at once but only once. Thank you!

aluigi, posted Mon Mar 12, 2018 3:00 pm (33137)

---

Remember that with quickbms you can select a whole folder as input so you can use the first script on all the extracted files in one operation.

Hocmai, posted Tue Mar 13, 2018 12:03 am (33145)

---

aluigi wrote:

Remember that with quickbms you can select a whole folder as input so you can use the first script on all the extracted files in one operation.

Thank you! I really did not realize it

Hocmai, posted Tue Mar 13, 2018 1:21 am (33150)

---

But there was an error, when I selected all the files. The quickbms window is closed