CN117785668A - Black box collection coverage rate method and system based on intel-PT - Google Patents
Black box collection coverage rate method and system based on intel-PT Download PDFInfo
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Abstract
The application discloses a black box collection coverage rate method and system based on intel-PT, wherein the method comprises the following steps: invoking a ptrace monitoring target application for tracking all processes and threads of the target application; receiving an opening test instruction of the fuzzer, monitoring all processes and threads of a target application by using an intel-PT, and calling an intel-PT API to initialize the monitoring of each thread; and receiving a closing test instruction of the fuzzer, closing the monitoring of the intel-PT on all processes and threads of the target application, acquiring the intel-PT monitoring data of all processes and threads, and decoding the intel-PT monitoring data to acquire coverage rate information of all processes and threads. By the method, coverage rate can be obtained only by the application running under the condition of x86, and the application range is wider.
Description
Technical Field
The application relates to the technical field of testing, in particular to a black box collection coverage rate method and system.
Background
The existing fuzzy test coverage rate collection mode is divided into a gray box and a black box, namely active codes and non-active codes, and under the condition of the gray box, a target item is inserted in a compiling period in a compiling mode generally through a compiler expansion mode, so that the coverage rate is collected in the running process. Whereas for black box projects, due to the lack of source code, simulation execution techniques, such as qemu or dynamorio, are typically used to execute the target binary file, thereby obtaining coverage of the project.
However, analog execution techniques have certain limitations; analog execution techniques require significant computational resources, especially for large, complex black box projects, which often are difficult to handle with such large computational demands as the scale of the project becomes larger and larger. Furthermore, simulation execution techniques assume that the inputs to the program are known, but in practice the program may encounter unknown or unexpected inputs, which may lead to simulation failures or inaccurate results. Therefore, the simulation execution technology cannot run all black box items, and the application range is small. Therefore, a black box coverage rate acquisition scheme with a wider application range is needed to be provided.
Disclosure of Invention
Based on the above, aiming at the technical problems, a black box collection coverage rate method and a black box collection coverage rate system based on intel-PT are provided, so as to solve the problem that the coverage rate application range of black box item collection in the prior art is small.
In a first aspect, a black box collection coverage method based on intel-PT, the method comprising:
invoking a ptrace monitoring target application for tracking all processes and threads of the target application;
receiving an opening test instruction of the fuzzer, monitoring all processes and threads of a target application by using an intel-PT, and calling an intel-PT API to initialize the monitoring of each thread;
and receiving a closing test instruction of the fuzzer, closing the monitoring of the intel-PT on all processes and threads of the target application, acquiring the intel-PT monitoring data of all processes and threads, and decoding the intel-PT monitoring data to acquire coverage rate information of all processes and threads.
In the above scheme, optionally, the calling ptrace monitors the target application and is also used for tracking Exec () system call of the target application;
when receiving an opening test instruction of a fuzzer, after monitoring a target application by utilizing an intel-PT, if a ptrace tracks that the target application generates Exec () system call, closing the intel-PT monitoring of all threads under the corresponding process of the threads generating the Exec () system call, reading the intel-PT monitoring data corresponding to the threads with the intel-PT monitoring closed, and decoding to obtain coverage rate information of the threads with the intel-PT monitoring closed;
the intel-PT monitoring of the thread being turned off is restarted.
In the above solution, optionally, before receiving the opening test instruction of the fuzzer, the method further includes: registering an epoll event for each thread respectively to obtain an intel-PT monitoring epoll notification of the corresponding thread;
after receiving an opening test instruction of the fuzzer and utilizing an intel-PT to monitor a target application, if an epoll notification is obtained, suspending a thread which sends the epoll notification, closing the intel-PT monitoring of the thread which sends the epoll notification, obtaining intel-PT monitoring data of a corresponding thread, and decoding to obtain coverage rate information of the corresponding thread;
restarting the intel-PT monitoring of the corresponding thread, and recovering the corresponding thread.
In a second aspect, a black box collection coverage system based on intel-PT, the system comprising:
ptrace call module: the method comprises the steps of calling a ptrace monitoring target application to track all processes and threads of the target application;
intel-PT monitoring module: the method comprises the steps of receiving an opening test instruction of the fuzzer, monitoring all processes and threads of a target application by utilizing an intel-PT, and calling an intel-PT API to initialize monitoring of each thread;
coverage rate collection module: and the method is used for receiving a closing test instruction of the fuzzer, closing the monitoring of the intel-PT on all processes and threads of the target application, acquiring the intel-PT monitoring data of all processes and threads, and decoding the intel-PT monitoring data to acquire the coverage rate information of all processes and threads.
In the above scheme, optionally, the Ptrace calling module further performs Exec () system call of the tracking target application;
the coverage rate collection module is further used for reading and decoding the intel-PT monitoring data corresponding to the thread of which the intel-PT monitoring is closed if the ptece tracks that the Exec () system call occurs to the target application after receiving the opening test instruction of the fuzzer and utilizing the intel-PT to monitor the target application, and closing the intel-PT monitoring of all threads under the corresponding process of the thread of which the Exec () system call occurs; and restarting the intel-PT monitoring of the thread that was turned off.
In the above scheme, optionally, the system further includes an epoll event registration module, configured to register an epoll event for each thread before receiving a test starting instruction of the fuzzer, and configured to obtain an intel-PT monitoring epoll notification of the corresponding thread;
the coverage rate collection module is further used for suspending the thread sending the epoll notification when receiving the opening test instruction of the fuzzer and obtaining the intel-PT monitoring data of the corresponding thread and decoding the intel-PT monitoring data to obtain coverage rate information of the corresponding thread if the epoll notification is obtained after the intel-PT monitoring target application is utilized; and restarting the intel-PT monitoring of the corresponding thread to recover the corresponding thread.
In a third aspect, a computer device includes a memory storing a computer program and a processor implementing the steps of the black box collection coverage method based on intel-PT of the first aspect when the computer program is executed.
In a fourth aspect, a computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the black box collection coverage method of the first aspect.
The application has at least the following beneficial effects:
the method comprises the steps of monitoring a target application through ptrace, and tracking all processes and threads of the target application; and (3) monitoring all threads of the target application through the intel-PT, starting or closing the intel-PT monitoring according to the instructions of the fuzzer, reading the intel-PT data when the monitoring is closed, and decoding to obtain coverage rate information. Because intel-PT is a hardware feature that does not cause any software conflicts with applications, the intel-PT feature can be validated as long as the application can run under x 86. Therefore, by using the method, coverage rate can be obtained only by the application running under the condition of x86, and the application range is wider.
And the exec event of the target application is tracked through the ptrace, and when the exec event occurs to the thread tracking the target application, the intel-PT monitoring of the corresponding thread is closed. The method also comprises the steps of registering an epoll event based on each thread, acquiring an intel-PT monitoring overflow notification of each thread, and closing the intel-PT monitoring of the corresponding thread when the overflow notification occurs. And closing the intel-PT monitoring of the corresponding thread, acquiring the intel-PT monitoring data of the corresponding thread, acquiring the coverage rate of the corresponding thread, and restarting the intel-PT monitoring of the corresponding thread after acquiring the coverage rate. Therefore, repeated start and stop of intel-PT monitoring is realized, overflow callback and multiprocess optimization are realized, and coverage rate of target items is obtained.
Drawings
FIG. 1 is a flowchart of a black box collection coverage method based on intel-PT according to one embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
Intel Processor Trace, PT for short, is a cpu feature introduced in intel in recent years, which can acquire information during the execution of an application and keep the application transparent, and since PT is a hardware feature, no conflict with the application on software will occur, so long as the application can run under x86, PT feature can be effective.
In one embodiment, as shown in FIG. 1, a black box collection coverage method based on intel-PT is provided, comprising the steps of:
step S1: invoking a ptrace monitoring target application for tracking all processes and threads of the target application;
step S2: receiving an opening test instruction of the fuzzer, monitoring all processes and threads of a target application by using an intel-PT, and calling an intel-PT API to initialize the monitoring of each thread;
step S3: and receiving a closing test instruction of the fuzzer, closing the monitoring of the intel-PT on all processes and threads of the target application, acquiring the intel-PT monitoring data of all processes and threads, and decoding the intel-PT monitoring data to acquire coverage rate information of all processes and threads.
In the black box collecting coverage rate method based on intel-PT, the target application is monitored through the ptrace, and all processes and threads of the target application are tracked; and (3) monitoring all threads of the target application through the intel-PT, starting or closing the intel-PT monitoring according to the instructions of the fuzzer, reading the intel-PT data when the monitoring is closed, and decoding to obtain coverage rate information. Because intel-PT is a hardware feature that does not cause any software conflicts with applications, the intel-PT feature can be validated as long as the application can run under x 86. Therefore, by using the method, coverage rate can be obtained only by the application running under the condition of x86, and the application range is wider.
In one embodiment, the call ptrace monitors the target application and is also used to track Exec () system call of the target application;
when receiving an opening test instruction of a fuzzer, after monitoring a target application by utilizing an intel-PT, if a ptrace tracks that the target application generates Exec () system call, closing the intel-PT monitoring of all threads under the corresponding process of the threads generating the Exec () system call, reading the intel-PT monitoring data corresponding to the threads with the intel-PT monitoring closed, and decoding to obtain coverage rate information of the threads with the intel-PT monitoring closed;
the intel-PT monitoring of the thread being turned off is restarted.
In this implementation, the exec event of the target application is also tracked using ptrace; after the intel-PT monitoring is started, if the ptrace tracks an exec event, all threads of the same process with the threads with the exec event are closed, the intel-PT monitoring data in all threads under the process are read, and coverage rate information of all threads under the process is obtained. And restarting PTintel-PT monitoring on all threads under the process after the information acquisition is completed.
In one embodiment, the receiving the opening test instruction of the fuzzer further includes: registering an epoll event for each thread respectively to obtain an intel-PT monitoring epoll notification of the corresponding thread;
after receiving an opening test instruction of the fuzzer and utilizing an intel-PT to monitor a target application, if an epoll notification is obtained, suspending a thread which sends the epoll notification, closing the intel-PT monitoring of the thread which sends the epoll notification, obtaining intel-PT monitoring data of a corresponding thread, and decoding to obtain coverage rate information of the corresponding thread;
restarting the intel-PT monitoring of the corresponding thread, and recovering the corresponding thread.
In this embodiment, the intel-PT monitoring target application has a separate storage address for the intel-PT monitoring data of each thread, registers an epoll event for the storage module of the intel-PT monitoring data of each thread, monitors whether the PT monitoring data of the storage module overflows by using the epoll event, if the epoll event acquires an overflow notification, it indicates that the data horse is full of the storage module, and controls the thread having the epoll event to stop PT monitoring and acquire parallel coverage information; after intel-PT data is read, the data of the storage module corresponding to the PT data is emptied, so that after coverage rate information is acquired, intel-PT monitoring is restarted, and overflow notification does not occur at this time.
Therefore, the exec event of the target application is tracked through the ptrace, and when the exec event occurs to the thread tracking the target application, the intel-PT monitoring of the corresponding thread is closed. The method also comprises the steps of registering an epoll event based on each thread, acquiring an intel-PT monitoring overflow notification of each thread, and closing the intel-PT monitoring of the corresponding thread when the overflow notification occurs. And closing the intel-PT monitoring of the corresponding thread, acquiring the intel-PT monitoring data of the corresponding thread, acquiring the coverage rate of the corresponding thread, and restarting the intel-PT monitoring of the corresponding thread after acquiring the coverage rate. Therefore, repeated start and stop of intel-PT monitoring is realized, overflow callback and multiprocess optimization are realized, and coverage rate of target items is obtained.
The coverage rate collection method provided by the application comprises the following steps of:
(1) Invoking a ptrace monitoring target application, and tracking all processes, threads and exec events.
(2) For each thread, the PT API is invoked to initiate monitoring while registering an epoll event to obtain overflow notifications.
(3) And opening or closing the intel-PT monitoring according to the instruction of the fuzzer, reading the intel-PT data when the monitoring is closed, and decoding to obtain coverage rate information.
(4) When exec event occurs, the monitoring is closed, the intel-PT data are read, the coverage rate information is obtained through decoding, and then the intel-PT monitoring is restarted.
(5) And when the overflow notification is obtained, suspending the corresponding thread, closing the monitoring, reading the intel-PT data, decoding to obtain coverage rate information, restarting the intel-PT monitoring, and recovering the corresponding thread.
In one embodiment, a black box collection coverage system based on intel-PT is presented, the system comprising:
ptrace call module: the method comprises the steps of calling a ptrace monitoring target application to track all processes and threads of the target application;
intel-PT monitoring module: the method comprises the steps of receiving an opening test instruction of the fuzzer, monitoring all processes and threads of a target application by utilizing an intel-PT, and calling an intel-PT API to initialize monitoring of each thread;
coverage rate collection module: and the method is used for receiving a closing test instruction of the fuzzer, closing the monitoring of the intel-PT on all processes and threads of the target application, acquiring the intel-PT monitoring data of all processes and threads, and decoding the intel-PT monitoring data to acquire the coverage rate information of all processes and threads.
In one embodiment, the Ptrace calling module further performs Exec () system call of the trace target application;
the coverage rate collection module is further used for reading and decoding the intel-PT monitoring data corresponding to the thread of which the intel-PT monitoring is closed if the ptece tracks that the Exec () system call occurs to the target application after receiving the opening test instruction of the fuzzer and utilizing the intel-PT to monitor the target application, and closing the intel-PT monitoring of all threads under the corresponding process of the thread of which the Exec () system call occurs; and restarting the intel-PT monitoring of the thread that was turned off.
In one embodiment, the system further includes an epoll event registration module, configured to register an epoll event for each thread before receiving a startup test instruction of the fuzzer, and configured to obtain an intel-PT monitoring epoll notification of the corresponding thread;
the coverage rate collection module is further used for suspending the thread sending the epoll notification when receiving the opening test instruction of the fuzzer and obtaining the intel-PT monitoring data of the corresponding thread and decoding the intel-PT monitoring data to obtain coverage rate information of the corresponding thread if the epoll notification is obtained after the intel-PT monitoring target application is utilized; and restarting the intel-PT monitoring of the corresponding thread to recover the corresponding thread.
Specific limitations regarding the intel-PT based black box collection coverage system can be found in the definition of the intel-PT based black box collection coverage method above, and will not be described in detail herein. The various modules in the intel-PT based black box collection coverage system described above may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a server. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program, when executed by the processor, implements an intel-PT based black box collection coverage method as described above.
In an embodiment, a computer readable storage medium is also provided, on which a computer program is stored, involving all or part of the flow of the method of the above embodiment.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (8)
1. A black box collection coverage method based on intel-PT, the method comprising:
invoking a ptrace monitoring target application for tracking all processes and threads of the target application;
receiving an opening test instruction of the fuzzer, monitoring all processes and threads of a target application by using an intel-PT, and calling an intel-PT API to initialize the monitoring of each thread;
and receiving a closing test instruction of the fuzzer, closing the monitoring of the intel-PT on all processes and threads of the target application, acquiring the intel-PT monitoring data of all processes and threads, and decoding the intel-PT monitoring data to acquire coverage rate information of all processes and threads.
2. The intel-PT based black box collection coverage method of claim 1, wherein the calling ptrace monitors the target application and is further used to track Exec () system calls of the target application;
when receiving an opening test instruction of a fuzzer, after monitoring a target application by utilizing an intel-PT, if a ptrace tracks that the target application generates Exec () system call, closing the intel-PT monitoring of all threads under the corresponding process of the threads generating the Exec () system call, reading the intel-PT monitoring data corresponding to the threads with the intel-PT monitoring closed, and decoding to obtain coverage rate information of the threads with the intel-PT monitoring closed;
the intel-PT monitoring of the thread being turned off is restarted.
3. The intel-PT based black box collection coverage method of claim 1, further comprising, prior to receiving the fuzzer open test instruction: registering an epoll event for each thread respectively to obtain an intel-PT monitoring epoll notification of the corresponding thread;
after receiving an opening test instruction of the fuzzer and utilizing an intel-PT to monitor a target application, if an epoll notification is obtained, suspending a thread which sends the epoll notification, closing the intel-PT monitoring of the thread which sends the epoll notification, obtaining intel-PT monitoring data of a corresponding thread, and decoding to obtain coverage rate information of the corresponding thread;
restarting the intel-PT monitoring of the corresponding thread, and recovering the corresponding thread.
4. A black box collection coverage system based on intel-PT, the system comprising:
ptrace call module: the method comprises the steps of calling a ptrace monitoring target application to track all processes and threads of the target application;
intel-PT monitoring module: the method comprises the steps of receiving an opening test instruction of the fuzzer, monitoring all processes and threads of a target application by utilizing an intel-PT, and calling an intel-PT API to initialize monitoring of each thread;
coverage rate collection module: and the method is used for receiving a closing test instruction of the fuzzer, closing the monitoring of the intel-PT on all processes and threads of the target application, acquiring the intel-PT monitoring data of all processes and threads, and decoding the intel-PT monitoring data to acquire the coverage rate information of all processes and threads.
5. The intel-PT based black box collection coverage system of claim 4, wherein the Ptrace call module further performs Exec () system calls that track a target application;
the coverage rate collection module is further used for reading and decoding the intel-PT monitoring data corresponding to the thread of which the intel-PT monitoring is closed if the ptece tracks that the Exec () system call occurs to the target application after receiving the opening test instruction of the fuzzer and utilizing the intel-PT to monitor the target application, and closing the intel-PT monitoring of all threads under the corresponding process of the thread of which the Exec () system call occurs; and restarting the intel-PT monitoring of the thread that was turned off.
6. The black box collection coverage system based on intel-PT of claim 4, further comprising an epoll event registration module configured to register an epoll event for each thread before receiving an open test instruction of the fuzzer, respectively, for obtaining an intel-PT monitoring epoll notification of a corresponding thread;
the coverage rate collection module is further used for suspending the thread sending the epoll notification when receiving the opening test instruction of the fuzzer and obtaining the intel-PT monitoring data of the corresponding thread and decoding the intel-PT monitoring data to obtain coverage rate information of the corresponding thread if the epoll notification is obtained after the intel-PT monitoring target application is utilized; and restarting the intel-PT monitoring of the corresponding thread to recover the corresponding thread.
7. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 3 when the computer program is executed.
8. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 3.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107315961A (en) * | 2017-07-11 | 2017-11-03 | 北京奇虎科技有限公司 | Bug detection method and device, computing device, storage medium |
| CN112286823A (en) * | 2020-11-18 | 2021-01-29 | 山石网科通信技术股份有限公司 | Method and device for testing kernel of operating system |
| CN116414722A (en) * | 2023-06-07 | 2023-07-11 | 清华大学 | Fuzzy test processing method and device, fuzzy test system and storage medium |
-
2023
- 2023-12-13 CN CN202311715619.6A patent/CN117785668A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107315961A (en) * | 2017-07-11 | 2017-11-03 | 北京奇虎科技有限公司 | Bug detection method and device, computing device, storage medium |
| CN112286823A (en) * | 2020-11-18 | 2021-01-29 | 山石网科通信技术股份有限公司 | Method and device for testing kernel of operating system |
| CN116414722A (en) * | 2023-06-07 | 2023-07-11 | 清华大学 | Fuzzy test processing method and device, fuzzy test system and storage medium |
Non-Patent Citations (1)
| Title |
|---|
| 李贺;张超;杨鑫;朱俊虎;: "基于虚拟机内省的Intel PT多进程监控技术研究", 网络安全技术与应用, no. 01, 15 January 2020 (2020-01-15) * |
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