defcon convention

data items are added, and the top pointer of the stack is also repaired.Change. You can also remove the top stack from the stack, which is called pop. After the stack pops up, an element at the top of the stack changes.The stack top pointer is modified accordingly. When a function is called, the caller pushes the parameter to the stack in sequence and then calls the function. After the function is called, the caller obtainsAnd compute the data. After function compute is completed, the stack can

, the stack top pointer is also modified. You can also remove the top stack from the stack, which is called pop. After the stack pops up, an element at the top of the stack changes to the top of the stack, and the top pointer of the stack changes accordingly. When a function is called, the caller pushes the parameter to the stack in sequence and then calls the function. After the function is called, the caller obtains data in the stack for calculation. After function compute is completed, the ca

stack top pointer is also modified. You can also remove the top stack from the stack, which is called pop. After the stack pops up, an element at the top of the stack changes to the top of the stack, and the top pointer of the stack changes accordingly. When a function is called, the caller pushes the parameter to the stack in sequence and then calls the function. After the function is called, the caller obtains data in the stack for calculation. After function compute is completed, the caller

. 3) where the return value of the function is placedIn high-level languages, these two problems are illustrated by the function invocation specification (calling conventions) . The common invocation specifications are:stdcall cdeclFastcallThisCallNaked Callstdcall Invocation SpecificationStdCall is often called the Pascal invocation specification, because Pascal is a very common teaching computer programming language, its syntax is rigorous, and the function calling

stack top pointer is also modified. You can also remove the top stack from the stack, which is called pop. After the stack pops up, an element at the top of the stack changes to the top of the stack, and the top pointer of the stack changes accordingly. When a function is called, the caller pushes the parameter to the stack in sequence and then calls the function. After the function is called, the caller obtains data in the stack for calculation. After function compute is completed, the caller

convention. Because visual c ++ uses the _ cdecl call method by default, _ stdcall should be used to call DLL in VC. According to the C compilation method, the _ cdecl call Convention only underlines the output function name, such as _ functionname. (3) _ fastcall: The _ fastcall call is faster. It passes parameters through the internal registers of the CPU. (In fact, it uses ECx and EDX to transmit the fi

When calling a function, there are various call conventions. They specify the parameter transfer method, whether the parameter is variable, and who handles the stack. There are two common call Conventions: C language and Pascal Language.You can set the call rules for custom functions in the Project Settings, you can also add keywords or API macro definitions (such as _ cdecl, _ stdcall, _ fastcall, WINAPI, and APIENTRY) before function names during function declaration and definition) specify th

illustrate these two problems. Common call specifications include: Stdcall cdecl fastcallThiscall naked call Stdcall call Specification Stdcall is often called Pascal call specification, because Pascal is a common computer used for teaching in the early days.ProgramThe design language, with rigorous syntax, uses the function call Convention stdcall. In Microsoft C ++ C/C ++ compilers, Pascal macro is often used to declare this call

C Name Decoration rules1. For functions that use the __cdecl calling convention, add a dash before the function name, regardless of the parameter and return value.2. For functions that use the __fastcall calling convention, add an @ sign before and after the function name, followed by the length of the parameter, regardless of the return value.For example, the decorated name of extern "C" int __fastcall Tes

stack, or the function itself cleans up the stack. As you can see, for a fixed number of parameters, it is similar to stdcall, and is similar to cdecl. 5. Naked Call is a relatively rare calling method, which is uncommon in general advanced programming languages. The declaration invocation of a function must be the same as the actual invocation method, and the compiler will inevitably create confusion. Function name Modification rule: 1. C Compile-time Function name Modification

Less than 5 minutes! Hackers have cracked the world's safest Android phone Blackphone is called the world's safest Android phone. At the recent DefCon hacking conference, the mobile phone was cracked by hackers within five minutes and obtained the Root permission. Blackphone is a product jointly developed by Geeksphone and Silent Circle. It was designed to provide users with data security services based on Google's open-source Android project. To

, but there must be many people involved in these attacks. DDoS protection provider Radware agrees with the discovery of Qihoo 360. According to Radware security researcher DanielSmith, many of these attacks reach 500 Gbps to 1 Tbps. But the good news is that they seldom continue. He said that Internet service providers and websites began to filter and blacklisted attack traffic because the attack traffic arrived through a specific network port. Other companies like Google and Amazon are designe

1. Introduction to activity hijackingSee the original article published on the DEFCON-19Https://www.trustwave.com/spiderlabs/advisories/TWSL2011-008.txtWhen android is running, it will switch between multiple activities. It maintains the history stack of an activity and is used to restore the previous activity when the user clicks back, the stack top points to the currently displayed activity.The original article is as follows:Http://developer.android

PIN code, which can be used by hackers to eavesdrop on mobile phone calls or even counterfeit mobile phone signal towers. "Hackers and drones can perform flight tasks based on the established routes and then return to the base, We have transformed it to attack wireless networks, Bluetooth and GSM cellular mobile phone communication networks ." Last weekend, Parkins and tacay attended the DefCon hacker technology seminar in Las Vegas, USA. Shows the h

This is a 200 pwn question on defcon this year. It is a 32-bit elf Program in linux. For the program, see the appendix shitsco.I. Static AnalysisFirst, run the program and check the functions of the program. As shown in, this program provides an internet operating system that supports certain commands (enable, ping, and so on ).Use the ida analysis program. main function:The main function has three subfunctions. Analyze the three subfunctions in seque

Security researcher Jonathan Brossard created a conceptual verification hardware backdoor called Rakshasa, which is said to be able to replace the computer's BIOS (Basic Input/Output System) and endanger the operating system at startup, but it does not leave any trace on the hard disk.Brossard is the CEO and security research engineer of Toucan systems, a French security company. He demonstrated how the malware works at the Defcon hacking conference o

to run in Android emulator; The ability to set the Dex file according to the Java source Code package directory structure to build a directory, each class file corresponding to a DDX file; Can be used as a jasmin-like anti-compilation engine; : PortalFino.An Android dynamic analysis tool.: PortalIndroid.The purpose of this project is to verify that a simple debug function on the Nix system a.k.a Ptrace function can be abused by malicious software to inject malicious code into the

, but after the crack can be the same as Vista genuine upgrade services.Flaw: The risk of damage to the motherboard or loss of functionality. "People are smashing windows Vista with a hammer." Jeffermos, the initiator of Defcon, the world's largest hacker organization, is intriguing. In Redmond, a suburb of Seattle, a windowless conference room in building 22nd, a large Microsoft campus, Windows developers gather to solve the system's vulnerabilit

how to reduce the development speed of one thing Ah! My point of view: 1. Functions and callers must follow a certain specification or convention directly. This convention includes: 1) function signature. This can be guaranteed by the compiler in a strongly typed programming language. 2) semantics. Is that the caller is going to invoke the function according to the purpose of the function, and the function

. 3) where the return value of the function is placedIn high-level languages, these two problems are illustrated by the function invocation specification (calling conventions) . The common invocation specifications are:stdcall cdeclFastcallThisCallNaked Callstdcall Invocation SpecificationStdCall is often called the Pascal invocation specification, because Pascal is a very common teaching computer programming language, its syntax is rigorous, and the function calling