Ok, I've been a flash designer for some time, and since I've heard many questions about flash I'd take the time to post some stuff...

A "decompiled" or "decompressed" flash file has a source of a .FLA which resembles the following:
Code:
Movie1   	 CSceneObjScene 1    CTextObjGizmo    CCharObjo             ?                              ?        ̌8Q@33333?      ?             V@      ?      ?                                                          m             ?                              ?        3333X7@ @      ?             V@      ?      ?                                                          z             ?                              ?        3333?6fffff?      ?             V@      ?      ?                                                          i             ?                              ?        4H33333?      ?             V@      ?      ?                                                          G             ?                              ?        LRR@      ?             V@      ?      ?                                                              d?                Ǯ-<N%?        )
+`@n:@@      ?             V@d?N%?   
  CEffectScaleLetter        
                                                                                                                                                                                                                                                                                                                                                     
     r@              Y@                                      Y@              Y@     r@      Y@                      Y@      Y@                  Y@      Y@                                  Y@      Y@      Y@      Y@                      Y@                                                                                @ 
 CEffect3dSpin        
                                                                                                                                                                                                                                                                                                                                                                     V@                     @o@                                             @o@                                                @o@                                         Y@      Y@      Y@      Y@                      Y@                                                            @                                                         
Beast Wars$                                              Gizmo                   ?                              ?                              ?             V@      ?      ?                                                                                                              p@     P@      (@                                                           Content for Movie1                   ,       cvid     
      gl?                d4Lz<gl?             @V@xqG@      ?             V@gl?gl?SERVER
Administrator     ܾ@     ĸ@
and that file compressed (.SWF) would resemble the following:
Code:
FWSf
  p 
  ) < @C        U2G.0  
2QTAUZ8	`$T}6d+;H	2D
 %t[TjUFOqR}&m+ycL6[§xy@& ߷KV[4_Fh@B+RQX
RgcVue %B }&5~BI8Q$fL)z^iŲ^|  J    VM
  
U$
-@@n-{=}XDH(˩EVw=qvkKhg      TK8  
)5jNТ;c$@UzeK~(Q/^5Yu 椙`3Ik8%&IP!H|AI%%Hl#-<K_׽ĵ5$Mb\~&^P J d`U&ޤ)KU:5MûNkִqyQXiVV[ە91AuJ 	   TXV*  
]]֯5~$uG𠥁D7xۄ3Sr@*mj*SZZ3oz7rN0*[o!v]JK	Կm*|Dx[sݳ^z}_0\$.WM76!DHw0MiIMSK:Tҕ=#ؤzD:^H	O%ډ~)_FFA@=1QKiMr     TV
x  
WrswK%mvf_TЗ%t9I=^SeNUdR%QH	SNU(f\0'zr.I!$r^r%"Zeifi	i Y~u;W4?;2)Ԩl-KkRN^Mk;:clpKKIi6H
rnc~Ud]k;Zҋ#e<    
@  Ȯк@D   ȮlD   ȮX1D   ȮÑ$D @  ͚t&b{@  nɢm2{@  CT{@  u:{{@  זXUd
 Qй @  ɀAH!U؍ ʹ(и @  K>KU섍 ͈ж@@  ]RɃд@  1Sг @  #б@  ɴQSB
 +qsl@ @  ]RASB ͣ/XCl@  K>KSB w?l@  K%l @   1l@@  
[}
 
-X1 @  ɑKi} ͽbX0@  K>K} ͑X0@@  f!cX/@  :d3X.@  iX.0@  U?Mcȶ 
 וCC @  nDڍcȳ@ ͫ*@  K>KcȲ  ̀A$@  T@  (ރx@  _NDT-P@  ɣ0NDT,@  K>KDT, @ 
 D>KUi @x@ 
 />KUi @@ 
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 #>KSBi @@ 
 x/1M
i @4@ 
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i @@ 
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i @(@ 
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i @ 
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 >K}i @@ 
 P/1ʤi @ @ 
 k/1ʤi @x@ 
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 K>KcȲ i @@ 
 m>/1ʤi @ l
 A>KcȲ i @`@  
 *#>KcȲ i @@ 
 >KcȲ i @P@ 
 Ŭ/5"i @@ 
 ;/5"i @D@ 
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 IO>KDT, i @@ 
 6/5"i @ 4
 9>KDT, i @(@  
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 N/9Pi @@ 
 Ł/9Pi @@ 
 
/9Pi @@ 
 Ĉ4/9Pi @ @  @   
See, theirs not that much you can do with either file, its not even all that interesting, but you CAN NOT extract the .FLA from a .SWF file, I don't know of any decompressers, but I'd be willing to listen if anyone has anything.

-Gizmo
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