Reversing the syntactic format of program inputs and data structures in binaries plays a vital role for understanding program behaviors in many security applications.In this paper,we propose a collaborative reversing ...Reversing the syntactic format of program inputs and data structures in binaries plays a vital role for understanding program behaviors in many security applications.In this paper,we propose a collaborative reversing technique by capturing the mapping relationship between input fields and program data structures.The key insight behind our paper is that program uses corresponding data structures as references to parse and access different input fields,and every field could be identified by reversing its corresponding data structure.In details,we use a finegrained dynamic taint analysis to monitor the propagation of inputs.By identifying base pointers for each input byte,we could reverse data structures and conversely identify fields based on their referencing data structures.We construct several experiments to evaluate the effectiveness.Experiment results show that our approach could effectively reverse precise input formats,and provide unique benefits to two representative security applications,exploit diagnosis and malware analysis.展开更多
The traffic condition of Taizhou Yangtze River Bridge is obtained to a certain extent, according to the traffic investigation nearby Taizhou Bridge. The statistical characteristics of the traffic conditions are acquir...The traffic condition of Taizhou Yangtze River Bridge is obtained to a certain extent, according to the traffic investigation nearby Taizhou Bridge. The statistical characteristics of the traffic conditions are acquired by statistical analysis. Simulation of the extreme vehicle loads and the sensitive analysis of load parameters are carried out based on these data complemented, which would guide the determination of the frictional coefficient between the main cables and the saddle.展开更多
For the purpose of enhancing automobile safety and the effectiveness of recalls,increasing manufacturers' quality control capabilities,and reducing defects,we investigated thestatus of recalls over the last five y...For the purpose of enhancing automobile safety and the effectiveness of recalls,increasing manufacturers' quality control capabilities,and reducing defects,we investigated thestatus of recalls over the last five years.We have examined patterns and trends in motor vehiclesafety recalls using databases from China,Europe and the United States.A recall rate parameterwas developed to evaluate the level of recall enforcement based on analyzing the reasonsfor recalls and manufactures' characteristics.Moreover,there were substantial differencesin the recall rates of China compared with those in other countries,indicating that Chinese manufacturersneed to take more active action in recall.展开更多
基金the National Natural Science Foundation of China，the foundation of State Key Lab.for Novel Software Technology in Nanjing University,the foundation of Key Laboratory of Information Assurance Technology
文摘Reversing the syntactic format of program inputs and data structures in binaries plays a vital role for understanding program behaviors in many security applications.In this paper,we propose a collaborative reversing technique by capturing the mapping relationship between input fields and program data structures.The key insight behind our paper is that program uses corresponding data structures as references to parse and access different input fields,and every field could be identified by reversing its corresponding data structure.In details,we use a finegrained dynamic taint analysis to monitor the propagation of inputs.By identifying base pointers for each input byte,we could reverse data structures and conversely identify fields based on their referencing data structures.We construct several experiments to evaluate the effectiveness.Experiment results show that our approach could effectively reverse precise input formats,and provide unique benefits to two representative security applications,exploit diagnosis and malware analysis.
基金National Science and Technology Support Program of China ( No. 2009BAG15B02)Key Pro-grams for Science and Technology Development of Chinese Transportation Industry( No. 2008-353-332-180)
文摘The traffic condition of Taizhou Yangtze River Bridge is obtained to a certain extent, according to the traffic investigation nearby Taizhou Bridge. The statistical characteristics of the traffic conditions are acquired by statistical analysis. Simulation of the extreme vehicle loads and the sensitive analysis of load parameters are carried out based on these data complemented, which would guide the determination of the frictional coefficient between the main cables and the saddle.
文摘For the purpose of enhancing automobile safety and the effectiveness of recalls,increasing manufacturers' quality control capabilities,and reducing defects,we investigated thestatus of recalls over the last five years.We have examined patterns and trends in motor vehiclesafety recalls using databases from China,Europe and the United States.A recall rate parameterwas developed to evaluate the level of recall enforcement based on analyzing the reasonsfor recalls and manufactures' characteristics.Moreover,there were substantial differencesin the recall rates of China compared with those in other countries,indicating that Chinese manufacturersneed to take more active action in recall.
