The files from _ext.bin are not extracted

[AntonKukoba1]

Well the application kinda works. It produces _sfx.exe and _ext.bin. SFX exe crashes, and it looks like all the files are stored within _ext.bin. Is there any way to extract _ext.bin contents?

[dubhater]

Hi!

ISx produced the sfx and ext files. How can I extract them further without running the sfx? 7z doesn't do it.

[lifenjoiner]

That is not likely to be an InstallShield installer.

[dubhater]

So, the file I'm working with is here: http://en.comfast.com.cn/uploadfile/2022/0610/20220610062026256.zip It contains one file: comfast setup x64.exe

I ran wine ISx.exe comfast\ setup\ x64.exe, which printed this:

comfast setup x64.exe
[0x0010F400]
Dir: "comfast setup x64_u\"
0x00000000 0001111040 "comfast setup x64_sfx.exe" ...   Y
files total: 6
extracting:
0x0010F45A 0000004607 "???u???O??"
                      can't create file!
extra data:
0x0010F45A 0001016826 "comfast setup x64_ext.bin" ...   Y

It produced the two files mentioned.

strings --encoding=l comfast\ setup\ x64_ext.bin shows the following:

0x0409.ini
0x0804.ini
1033.mst
2052.mst
COMFAST Wireless Network Adapter.msi
Setup.ini

I assume this is where the actual driver files are stored.

strings --encoding=l comfast\ setup\ x64_sfx.exe shows a lot more strings. These are just a few:

Preparing Setup>Please wait while the InstallShield Wizard prepares the setup.

LegalCopyright
Copyright (c) 2020 Flexera. All Rights Reserved.
OriginalFilename
setup.exe
ProductName
COMFAST Wireless Network Adapter
ProductVersion
6.1.13716.6
Internal Build Number
198300
ISInternalVersion
26.0.546
ISInternalDescription
Setup Launcher Unicode

I don't even need the driver, I just want to know what driver it is.

What do you think? Is there any chance to extract this?

[lifenjoiner]

Obviously, @dubhater you used it on a new version installer that was not supported. v0.3.3 has been released.

[dubhater]

I see. v0.3.3 extracted the msi. Thank you so much!