STEALTHY DEBUGGER
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United States of America Patent
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N/A
Issued Date -
Dec 10, 2009
app pub date -
Jun 3, 2009
filing date -
Jun 4, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of stealthily debugging software comprises dynamically injecting a jump into an executing target program; performing a debugging operation on the target program; and dynamically removing the injected jump from the target program. Dynamically injecting a jump comprises copying memory contents from a selected breakpoint location to a second memory location, and writing a jump instruction and location at the breakpoint location. Dynamically removing the injected jump comprises copying memory contents back to the breakpoint location from the second memory location. The method may further comprise replacing a pointer to a system function with a pointer to a debug module in a syscall table, and placing the debug module in a slack space of the target program. A debugging system is also disclosed.
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