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System for obfuscating computer code upon disassembly

  • US 7,065,652 B1
  • Filed: 06/21/2000
  • Issued: 06/20/2006
  • Est. Priority Date: 06/21/2000
  • Status: Expired due to Fees
First Claim
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1. A method for obfuscating computer program instructions upon disassembly, the method comprising:

  • inserting an obfuscating instruction for causing a disassembler to not disassemble one or more bytes subsequent to the obfuscating instruction, wherein said obfuscating instruction is an INT instruction; and

    inserting a branch instruction to invoke execution of one or more bytes subsequent to the obfuscating instruction, said method including the step of inserting the following code;

    JMP $+4INT 35h.

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