A command-line SWF disassembly tool & Go library.
Requires the Go compiler. To install the command-line toolkit:
go install b7c.io/swfx/cmd/swfx@latestThe ls command will list each SWF tag's offset, size, name and tag code. If the tag has an associated character ID, it will be shown in square brackets.
$ swfx ls duck.swf
0x00000015 4 FileAttributes (69)
0x0000001b 459 Metadata (77)
0x000001ec 4 ScriptLimits (65)
0x000001f2 3 SetBackgroundColor (9)
0x000001f7 26 TagCode(41)
0x00000213 5 FrameLabel (43)
0x0000021a 129 DefineBinaryData (87) [1]
0x000002a1 766 DefineBinaryData (87) [2]
0x000005a5 1145 DefineBinaryData (87) [3]
0x00000a24 26 DefineBitsLossless2 (36) [4]
0x00000a44 117 DefineBitsLossless2 (36) [5]
0x00000abf 233 DefineBitsLossless2 (36) [6]
0x00000bae 766 DefineBinaryData (87) [7]
0x00000eb2 292 DefineBinaryData (87) [8]
0x00000fdc 91 DefineBitsLossless2 (36) [9]
0x0000103d 38 DefineBitsLossless2 (36) [10]
0x00001069 175 DefineBitsLossless2 (36) [11]
0x0000111e 238 DefineBitsLossless2 (36) [12]
0x00001212 5169 TagCode(82)
0x00002649 248 SymbolClass (76)
0x00002747 0 ShowFrame (1)
0x00002749 0 End (0)
Use the --symbols flag to extract symbol information from SymbolClass tags. This will list each symbol's character ID, name and its associated tag.
$ swfx ls --symbols duck.swf
0 duck (root class)
1 duck_index DefineBinaryData (87)
2 duck_duck_visualization DefineBinaryData (87)
3 duck_duck_assets DefineBinaryData (87)
4 duck_duck_32_sd_4_0 DefineBitsLossless2 (36)
5 duck_duck_32_a_4_0 DefineBitsLossless2 (36)
6 duck_duck_64_a_4_0 DefineBitsLossless2 (36)
7 duck_manifest DefineBinaryData (87)
8 duck_duck_logic DefineBinaryData (87)
9 duck_duck_32_a_6_0 DefineBitsLossless2 (36)
10 duck_duck_64_sd_4_0 DefineBitsLossless2 (36)
11 duck_duck_64_a_6_0 DefineBitsLossless2 (36)
12 duck_duck_icon_a DefineBitsLossless2 (36)
Use the extract / x command to extract resources from the SWF file.
This can currently extract binary data from DefineBinaryData tags and images from DefineBitsLossless2 and DefineBitsJpeg2 tags.
Files will be named by their symbol defined in the SymbolClass tags, or by their character ID if no symbol exists.
Note that multiple symbols can point to the same tag, in which case multiple files with the same content will be created.
The file extension for binary data is chosen via MIME sniffing.
$ swfx x duck.swf
duck.swf
duck\duck_index.xml
duck\duck_duck_visualization.xml
duck\duck_duck_assets.xml
duck\duck_duck_32_sd_4_0.png
duck\duck_duck_32_a_4_0.png
duck\duck_duck_64_a_4_0.png
duck\duck_manifest.xml
duck\duck_duck_logic.xml
duck\duck_duck_32_a_6_0.png
duck\duck_duck_64_sd_4_0.png
duck\duck_duck_64_a_6_0.png
duck\duck_duck_icon_a.png
Extracted 12 files.
* DefineBinaryData: 5
* DefineBitsLossless2: 7