I recently posted a help request on this, but shortly figured out how to do it on my own so I decided to write a tutorial on what I learned in case other people had the same concern.

REQUIRED:
Some knowledge of how CMD/Paths work

1. Install the SWFTools.exe (Must install as an administrator) Just google.
2. Locate the installation directory and open a cmd right there (Shift Right Click)
3. We will use the swfextract tool

swfextract "C:/...fullpath to swf/client.swf"> "C:/...desired location for results/results.txt"

4. You will get something like this:
Code:
Objects in file C:\Users\Matt\Desktop\ROTMG All in One Tool\Clients\Fresh_Client_1380830159-new.swf:
 [-i] 9 Shapes: ID(s) 47, 49, 55, 60, 66, 68, 70, 74, 185
 [-i] 19 MovieClips: ID(s) 48, 50, 52, 53, 57-59, 61, 62, 67, 69, 71, 73, 75, 186, 188, 189, 191, 192
 [-j] 6 JPEGs: ID(s) 54, 89, 199, 202, 204, 208
 [-p] 77 PNGs: ID(s) 65, 76, 77, 79-83, 85, 87, 88, 91, 93, 94, 96, 98, 102, 104, 105, 108-110, 112, 113, 115, 116, 119, 120, 125, 128, 131, 132, 136-138, 140, 143, 146, 148-157, 162, 164, 166-168, 170, 172, 174, 176, 178, 181, 182, 184, 193, 194, 196-198, 200, 201, 203, 205, 209-215
 [-F] 2 Fonts: ID(s) 63, 64
 [-b] 97 Binarys: ID(s) 1-46, 78, 84, 86, 90, 92, 95, 97, 99-101, 103, 106, 107, 111, 114, 117, 118, 121-124, 126, 127, 129, 130, 133-135, 139, 141, 142, 144, 145, 147, 158-161, 163, 165, 169, 171, 173, 175, 177, 179, 180, 183, 195, 206, 207
 [-f] 1 Frame: ID(s) 0
This is all of the embedded assets for ROTMG. Now rip them to your hearts content!

5. To pull them: in the same cmd

**-p,-j,-F,-i.. corresponds to the type of asset in the results.txt
swfextract -p ID "Path to swf again" -o "path to outputlocation/Picture.png"

Let me know if this was useful or if you have questions!