Thick clients are often not well-suited for public environments. Reverse engineering IE thick client. Even today, we can find a lot of legacy thick client applications being used by big companies.In this series of articles, we will learn various tools and techniques used to perform thick client application penetration testing by using a vulnerable application developed by the author. The photo below shows the tiny silicon die of the 8086 processor under a microscope. It is commonly seen enterprises using thick client applications for their internal operations. Additionally, thick clients often require specific applications, again posing more work and limitations for deployment. ASLR does not prevent control of EIP, there are bypass exploits available to bypass the same. Though, thick client applications are not new, penetration testing process for thick clients is not as straight as Web Application Penetration testing. These accounts can be used as INSERT INTO USERS values(‘rebecca’,’rebecca’,’rebecca@test.com’,0)INSERT INTO USERS values(‘raymond’,’raymond’,’raymond@test.com’,0)The Windows Machine where SQL Server is running should have the IP 192.168.56.110 on Host Only Adapter (This is hard coded in DVTA Application, but you can recompile it if you wish to change).Information Gathering is a crucial step in penetration testing. Decompiling and Reverse Engineering As mentioned earlier, in Thick Clients majority of the business logic resides in the client application, thus it is important to identify any backdoors that might be present on the client-side logic. It does this by randomly offsetting the location of modules and certain in-memory structures.Data Execution Prevention (DEP) on the other hand prevents certain memory sectors, e.g. The following resources may be helpful starting points for additional learning:This series outlined quite a few thick client application testing methods and tools at a high level. Reverse-engineering the adder inside the Intel 8086 The Intel 8086 processor contains many interesting components that can be understood through reverse engineering. Network Security; … This information can be useful to assess the security of the remote host directly that the application is communicating with. SecVulture is an Information Security professional with experience in Web, Thick client and Mobile Application Security, currently working with Infosec Institute as a researcher. In this application, there’s not a lot going on that would be “vulnerable” to memory values changing since authorization and storage is all on the server. Viewed 190 times 1. It gathers all the information about the text strings in the binary and gives us information for the application. This is a major security concern and the application should be resilient to this attack. the stack, from being executed.When combined it becomes exceedingly difficult to exploit vulnerabilities in applications using shellcode or return-oriented programming (ROP) techniques.Control Flow Guard (CFG) is a highly-optimized platform security feature that was created to combat memory corruption vulnerabilities. Applications such as We usually see two types of thick client application designs as discussed in the following section.In this type of design, we typically see a client and a database communicating with each other. In this phase, we need to gather all the possible information about the target application.Some of the common things that we need to do during information gathering phase of thick client penetration test are as follows.It is essential to understand the complete functionality of the application during a pentest. Tags: SEND DETAILS.
Thick clients are often not well-suited for public environments. Reverse engineering IE thick client. Even today, we can find a lot of legacy thick client applications being used by big companies.In this series of articles, we will learn various tools and techniques used to perform thick client application penetration testing by using a vulnerable application developed by the author. The photo below shows the tiny silicon die of the 8086 processor under a microscope. It is commonly seen enterprises using thick client applications for their internal operations. Additionally, thick clients often require specific applications, again posing more work and limitations for deployment. ASLR does not prevent control of EIP, there are bypass exploits available to bypass the same. Though, thick client applications are not new, penetration testing process for thick clients is not as straight as Web Application Penetration testing. These accounts can be used as INSERT INTO USERS values(‘rebecca’,’rebecca’,’rebecca@test.com’,0)INSERT INTO USERS values(‘raymond’,’raymond’,’raymond@test.com’,0)The Windows Machine where SQL Server is running should have the IP 192.168.56.110 on Host Only Adapter (This is hard coded in DVTA Application, but you can recompile it if you wish to change).Information Gathering is a crucial step in penetration testing. Decompiling and Reverse Engineering As mentioned earlier, in Thick Clients majority of the business logic resides in the client application, thus it is important to identify any backdoors that might be present on the client-side logic. It does this by randomly offsetting the location of modules and certain in-memory structures.Data Execution Prevention (DEP) on the other hand prevents certain memory sectors, e.g. The following resources may be helpful starting points for additional learning:This series outlined quite a few thick client application testing methods and tools at a high level. Reverse-engineering the adder inside the Intel 8086 The Intel 8086 processor contains many interesting components that can be understood through reverse engineering. Network Security; … This information can be useful to assess the security of the remote host directly that the application is communicating with. SecVulture is an Information Security professional with experience in Web, Thick client and Mobile Application Security, currently working with Infosec Institute as a researcher. In this application, there’s not a lot going on that would be “vulnerable” to memory values changing since authorization and storage is all on the server. Viewed 190 times 1. It gathers all the information about the text strings in the binary and gives us information for the application. This is a major security concern and the application should be resilient to this attack. the stack, from being executed.When combined it becomes exceedingly difficult to exploit vulnerabilities in applications using shellcode or return-oriented programming (ROP) techniques.Control Flow Guard (CFG) is a highly-optimized platform security feature that was created to combat memory corruption vulnerabilities. Applications such as We usually see two types of thick client application designs as discussed in the following section.In this type of design, we typically see a client and a database communicating with each other. In this phase, we need to gather all the possible information about the target application.Some of the common things that we need to do during information gathering phase of thick client penetration test are as follows.It is essential to understand the complete functionality of the application during a pentest. Tags: SEND DETAILS.