[REVS] Bugger The Debugger

From: SecuriTeam (support_at_securiteam.com)
Date: 04/12/05

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    To: list@securiteam.com
Date: 12 Apr 2005 11:12:07 +0200

    The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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      Bugger The Debugger
    ------------------------------------------------------------------------

    SUMMARY

    The paper linked below will demonstrate methods that may be used by
    malware to execute code, simply by being loaded into a debugging session.
    This code execution occurs before the debugger passes control back to the
    user and therefore cannot be prevented.

    DETAILS

    Abstract:
    The use of debuggers to analyse malicious or otherwise unknown binaries
    has become a requirement for reverse engineering executables to help
    determine their purpose.

    While researchers in places such as anti-virus laboratories have always
    done this, with the availability of free and easy to use debuggers it has
    also become popular with corporate security officers and home users. One
    of the main purposes of a debugger is to allow the user to control the
    execution of a binary in such a way as to determine what instructions or
    commands the binary is executing. During malware analysis the user can
    modify what the binary is trying to execute, or prevent it all together.

    ADDITIONAL INFORMATION

    The information has been provided by
    <mailto:brett.moore@security-assessment.com> Brett Moore.
    The original article can be found at:
    <http://www.security-assessment.com/Whitepapers/PreDebug.pdf>
    http://www.security-assessment.com/Whitepapers/PreDebug.pdf

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