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US Patent 6698016 - Method for injecting code into another process

US Patent Issued on February 24, 2004
Estimated Patent Expiration Date: Icon_subject August 29, 2020Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

A method to map an external module into a target process in an operating system that keeps executable code in a memory location that can be determined. The starting memory address of the target process is retrieved and the target process is loaded as suspended. The target process' starting instructions are saved and instructions that load the external module are inserted at the starting memory address. The target process resumes execution resulting in the external module getting loaded. The target process' starting instructions are restored and the target process resumes execution, but with the external module mapped into the target process' memory.

Other References

  • Morell et al. Pertubation Analysis of Computer Programs. IEEE. 1997. pp. 77-87.
  • Ghosh et al. An Automated Approach for Identifying Potential Vulnerabilities in Software. 1998. pp. 104-114.
  • Matt Pietrek, "Peering Inside the PE: A Tour of the Win32 Portable Executable File Format", Microsoft Systems Journal, vol. 9, No. 3, p. 1534, Mar. 1994
  • Jeffrey Richter, "Programmable Applications for Microsoft Windows, Fourth Edition", Microsoft Press, p. 794, Sep. 29, 1999

Inventor

Assignee

Application

No. 09/649798 filed on 08/29/2000

US Classes:

717/162, Linking717/131Including analysis of program execution

Field of Search

717/130, Including instrumentation and profiling717/131, Including analysis of program execution717/132, Using program flow graph717/133, Using procedure or function call graph717/162, Linking717/163, Including library717/164, Shared717/165, Object oriented717/166, Using class loader717/167Remote

Examiners

Primary: Zhen, Wei

Attorney, Agent or Firm

US Patent References

5313616, Method for analyzing calls of application program by inserting monitoring routines into the executable version and redirecting calls to the monitoring routines
Issued on: 05/17/1994
Inventor: Cline, et al.
5634022, Multi-media computer diagnostic system
Issued on: 05/27/1997
Inventor: Crouse, et al.
6009525, Multi-tier electronic software distribution
Issued on: 12/28/1999
Inventor: Horstmann
6065679, Modular transaction terminal
Issued on: 05/23/2000
Inventor: Levie, et al.
6167479System and method for testing interrupt processing logic within an instruction processor
Issued on: 12/26/2000
Inventor: Hartnett, et al.

International Class

G06F 9/44 (20060101)

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