this limit//run: Run.exe automatically compiles pm16.c and pm32.c and then generates an IMG and calls Bochs to run the program// Hint: Please first compile run.c file with yc09, generate Run.exe Program//After modify PM16.C and pm32.c code, can run Run.exe view effect directly, click Enter again compile run//author: Miao//Time: 2010-2-8 #define Ycbit 32//Tell the compiler to compile the program in 32-bit format #define ycorg 0x0//This value generates an address base offset for variable function
Assembly language: Movsb,movsw,movsdTransferred from: http://blog.csdn.net/zhenyongyuan123/article/details/8364011Currently, the 80386 series of processors provide several sets of instructions for handling byte, Word, and double-word values, although these directives become basic string directives, but their usage is not limited to character arrays.Instructions:MOVSB, MOVSW, Movsd Describe:Moves the string data, copying the data at the memory address addressed by the ESI register to the memory a
))LSet L = bIp2long = L.valEnd Function
It's good and powerful to copy mybytes type variables to MyLong type variables with LSet. Look at the generated assembly code:
Copy Code code as follows:
00401A0E Lea eax, DWORD ptr [ebp-0x20]; Address of variable B
00401A11 push EAX
00401a12 Lea eax, DWORD ptr [ebp-0x14]; The address of the variable L
00401A15 push EAX
00401A16 Push 0x4
00401a18 call __vbacopybytes; JMP to Msvbvm60.__vbacopybytes
Called is the __v
The usage of "[]" has been described in "FAQ" and is cited as follows:
1, push DWORD ptr [024c1100] pressure stack 024c1100 value of two words2, CMP eax,[ebp+14] eax-ebp+14 valid value, does not retain the value, mainly looks at the sign bit3, CMP byte ptr [eax],46 byte type eax-46, see sign bit4, Lea eax,[edx-02] edx-02 valid value (an address value) to EAX5, MOV ecx,[edx+08] edx+8 value as the address, this address points to the value of ECX
I am going to add a few more examples of what I have
number. Then, when we execute the next wait () operation, we will pass the value of the serial number plus 1 back through the sequence parameter to let the server know that the number of the next message we expect is this. For example, if we receive a message whose sequence attribute is 836, it will be sent to server 837 when wait () is called next time. At this time, the server should keep the message No. 836 at the beginning of the pair. If the cli
[ Com.romeo.backbone.services.WorkCommonService] found for dependency:expected at least 1 bean which qualifies as Autowire Candidate for this dependency. Dependency annotations: {@org. springframework.beans.factory.annotation.Autowired (required=true)}at Org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException ( defaultlistablebeanfactory.java:967) at Org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency ( default
This vulnerability is manifested in MSVidCtl. dll (xpsp2: 6.5.2600.2180, vista: 6.5.6000.16386). MSVidCtl. dll is the system standard component. The cause of the vulnerability is that the persistent byte array (VT_UI1 | VT_ARRAY) is incorrectly read. Attackers can construct special files to trigger this vulnerability, which leads to arbitrary code execution with the current process permission.
The following is an analysis of the vulnerability code:Take MSVidCtl. dll of 6.5.2600.2180 as an exampl
process. For different versions of NT systems, the kpcr structure is quite stable. We can even obtain the ETHREAD pointer of the current thread from the memory [0ffdff124h.
3. Replace the token of the current process with the system token. Because the token offset in eprocess is not fixed, you need to first find the offset value and then replace it. Ntoskrnl.exe exports the psreferenceprimarytoken function, which contains the operation to get the token from eprocess. We need to extract the offs
-specified check of v56archv archive shipmentV56atktx: Number of the input line of the modified textV56bmod transmission processing: Field ModificationV56diinjection shipping process: determine the distanceV56fcopy shipping processing: copying delivery dataV56fstat shipping handling: active when a status is setV56i0001 IDOC tpsdls: changes in the delivery header GroupV56i0002 IDOC tpsdls: Changes to the delivery Project TeamV56i0003 IDOC tpsdls: Modify the packaged data groupV56i0004 IDOC tpsdls
] // obtain the address of the method table. The first four bytes of the reference type on the stack are the address of the method table.00000079 call dword ptr [eax + 38 H] // the address of the function to be called is calculated every time a virtual function is called.2017007c NOPClass_test.test3 (); // static function00000083 call ffeec140 // call a function00000088 NOPPublic override string tostring () // subclass calls the parent class function{// Omitting the previous AssemblyReturn base.
will confuse us. Continue to look down:
Code: 004bd61e cmp edi, 0ahCode: 004bd621 JG short loc_4bd62fCode: 004bd623 mov dword ptr [EBX + 90 H], 0chCode: 004bd62d JMP short loc_4bd639Code: 004bd62f; zookeeperCode: 004bd62fCode: 004bd62f loc_4bd62f:; Code xref: sub_4bd5a8 + 79jCode: 004bd62f mov dword ptr [EBX + 90 H], 10 h
The above code sets whether 12 or 16 cycles are used for information encryption based on the length of the key table.
Code: 00
The annual "big project" for reinstallation of the system has been under construction.
Sort out the tools and materials of last year. Today, we start to give our customers a bit of gameplay assistance. (The customer will not mind if it has been more than a year)
Today is the first article.
Analysis notes of long Xiang mi Chuan
Blame
Breakthrough:
Ce searches for the change value and does not stop selecting the blame. Locate the following:Code:
00413b5e-89 be B0 00 00-mov [ESI +
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