Abstract: The disclosed embodiments provide a system that modifies execution of a target process in a computer system. During loading of a marker library by a target process, the system modifies import dependency data of the marker library to include an injection library as a dependency of a marker library. After the modified import dependency data is used to load the injection library into the target process by the operating system or loader, the system executes the injection library prior to execution of the marker library to revert the import dependency data to an original state and modify execution of the target process.

Abstract: Systems and techniques are described for controlling injection of a library into a process. Specifically, some embodiments provide an Advanced Injection Rule Engine (AIRE), which uses a set of rules to selectively inject a library, e.g., a dynamic-link library (DLL), into a process. Some embodiments implement a Domain Specific Language (DSL), called AIRE Script, to define the injection rules that are used by the AIRE at runtime.

Abstract: Systems and techniques are described for compressing strings by using a tree data structure. Specifically, for each string in a sequence of strings, the embodiments can traverse the tree data structure by matching characters of the string with characters associated with nodes of the tree data structure until either (1) all characters in the string have been processed, or (2) a current character in the string does not match a corresponding character in a current node of the tree data structure. Next, a first node identifier associated with the current node can be returned if all characters have been processed. Otherwise, a new node can be created in the tree data structure to store the remaining characters in the string, and a second node identifier associated with the new node in the tree data structure can be returned.

Abstract: Systems and techniques are described for controlling injection of a library into a process. Specifically, some embodiments provide an Advanced Injection Rule Engine (AIRE), which uses a set of rules to selectively inject a library, e.g., a dynamic-link library (DLL), into a process. Some embodiments implement a Domain Specific Language (DSL), called AIRE Script, to define the injection rules that are used by the AIRE at runtime.

Abstract: The disclosed embodiments provide a system that modifies execution of a target process in a computer system. During loading of a marker library by a target process, the system modifies import dependency data of the marker library to include an injection library as a dependency of a marker library. After the modified import dependency data is used to load the injection library into the target process by the operating system or loader, the system executes the injection library prior to execution of the marker library to revert the import dependency data to an original state and modify execution of the target process.

Abstract: Embodiments provide systems, methods, and computer program products for dynamically hooking multiple levels of application code. A server receives identifying information that identifies a target function of a target application to hook. The server pauses a target process of the target application. The server locates the target function within the target application code based on the received identifying information. The server then hooks the located function outside of the target application, thereby creating hooked code during application runtime.

Abstract: Embodiments provide systems, methods, and computer program products for dynamically hooking multiple levels of application code. A server receives identifying information that identifies a target function of a target application to hook. The server pauses a target process of the target application. The server locates the target function within the target application code based on the received identifying information. The server then hooks the located function outside of the target application, thereby creating hooked code during application runtime.