NAT.EXE Exceptions

From: Ian Lyte (ianlyte_at_hotmail.com)
Date: 09/10/03

  • Next message: Lluis Mora: "RE: Cracking a Netscreen password" 
    To: <pen-test@securityfocus.com>
Date: Wed, 10 Sep 2003 15:42:49 +0100

    I'm running a dictionary attack against a NETBIOS share (admin$) and
    historically I have always used NAT.EXE for this as it has always performed
    admirably.

    However now it has started giving me this :

    [*]--- Unable to access
    (nat.exe 1000) In cygwin_except_handler
    (nat.exe 1000) Exception trapped!
    (nat.exe 1000) exception C0000005 at 40F7EB
    (nat.exe 1000) exception: ax 80000000 bx 7FFFFFF cx 1F dx 1
    (nat.exe 1000) exception: si F di 14 bp 245EE58 sp 245EE18
    (nat.exe 1000) exception is: STATUS_ACCESS_VIOLATION
    (nat.exe 1000) Stack trace:
    (nat.exe 1000) frame 0: sp = 0x245EA2C, pc = 0x1001282A
    (nat.exe 1000) frame 1: sp = 0x245EA48, pc = 0x77FB172E
    (nat.exe 1000) frame 2: sp = 0x245EA6C, pc = 0x77FB1700
    (nat.exe 1000) frame 3: sp = 0x245EB18, pc = 0x77F75DBA
    (nat.exe 1000) frame 4: sp = 0x245EE58, pc = 0x410351
    (nat.exe 1000) frame 5: sp = 0x245EE8C, pc = 0x410492
    (nat.exe 1000) frame 6: sp = 0x245EEA8, pc = 0x407EFA
    (nat.exe 1000) frame 7: sp = 0x245F350, pc = 0x40A619
    (nat.exe 1000) frame 8: sp = 0x245F3FC, pc = 0x40A9CE
    (nat.exe 1000) frame 9: sp = 0x245F414, pc = 0x401681
    (nat.exe 1000) frame 10: sp = 0x245F43C, pc = 0x4013C1
    (nat.exe 1000) frame 11: sp = 0x245F45C, pc = 0x10011BEB
    (nat.exe 1000) frame 12: sp = 0x245FF9C, pc = 0x10011BFF
    (nat.exe 1000) frame 13: sp = 0x245FFA8, pc = 0x417614
    (nat.exe 1000) frame 14: sp = 0x245FFB8, pc = 0x401012
    (nat.exe 1000) frame 15: sp = 0x245FFC0, pc = 0x77E814C7
    (nat.exe 1000) End of stack trace (more stack frames may be present)

    Anyone know why or experiencing the same thing? Have you got a workaround?

    Also - any suggestions for a newer/better/faster version for use under
    Win32?

    Thanks in advance ...

    Ian

    PS Running on XP Pro, all patches. But it does it on my Win98 box too :(

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