InstallShield archive (IBT)
InstallShield archive (IBT) refers to an archive file format associated with InstallShield. The filename is usually "setup.ibt".
It contains embedded files compressed in MS Compress "SZDD" format.
The files it contains are usually redistributable InstallShield DLL files. It may be comparable to the InstallShield installer archive format used by earlier versions of InstallShield.
An IBT file consists of a sequence of member file segments. Each segment begins with four strings, each terminated by a NUL byte:
- Name of compressed file
- Name of original file
- A version number of some sort
- A number that can be used to locate the next segment
An embedded SZDD-compressed file follows. It begins with the standard SZDD signature bytes:
'S' 'Z' 'D' 'D' 0x88 0xf0 0x27 0x33.
Refer to the Format details section.
It's possible that, in practice, all such files start with "