What is Flex? Adobe Flex is a software development kit (SDK) released by Adobe Systems for the development and deployment of cross-platform rich Internet applications based on the Adobe Flash platform. Flex applications can be written using Adobe Flash Builder or by using the freely available Flex compiler from Adobe.
Sothink SWF Decompiler is a professional Flex extractor, it can help you convert the Flex SWF back to Flex source code, so that you can make further alterations in Flex environment. See the following tutorial of Flex extracting.
Recommended Flex extractor: Sothink SWF Decompiler V6.0
Step 1: Open target Flex SWF in the Flex extractor
Launch Sothink SWF Decompiler, and then from "Explorer" panel, navigate to the folder in which the target Flex SWF file locates. Now all the SWF files contained in this folder will be listed automatically in the below panel.
Choose the Flex SWF that you want to convert to Flex source code, and then it will begin to play in the central preview window.
Step 2: Check the decompiled Flex SWF elements
Now the Flex SWF you selected is listed in the "Single File Export" window of the "Export" panel. When you click the "+" sign, all the SWF elements will be decompiled automatically and displayed by category.
Step 3: Export Flex
In the "Export" panel, click the "Export FLA/FLEX" button, and then you will see the following popup box.
Choose export SWF file to FLEX, set export path, and then click "OK" to export the Flex source file.
Step 4: Find extracted Flex source files
Go to the export folder you specified to find the extracted Flex source files.