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EFS Web Server 7.2 Get request buffer Overflow vulnerability Analysis and utilization

Introduction EFS Web server is a software that can manage server files over a Web side, and sending a GET request too long can trigger a buffer overflow vulnerabilityAnalysis Source: https://www.exploit-db.com/exploits/39008/ Experimental Environment WinXP SP3 Chinese versionEFS Web Server7.2Immunity DebuggerWinDbgIdaMona Vulnerability Analysis Because the author uses the address of the overlay Seh program in ImageLoad.dll, no ASLR, so the use of more stable, open on the pop-up calculator We w

Operating system experiment Seven: Interruption test experiment of protection mode

),//memory address segment, readable writable descriptor (Protec ADDR,0XFFFFF,DA_DRW|DA_32),//To make the 32-bit code segment (PM32.C) variable can read and write}; #pragma pack (1) struct GDT_PTR {t_16 size; void *addr;}; #pragma pack () gdt_ptr gdtptr = {sizeof (LABEL_GDT), (char*) label_gdt + protecaddr}; Segment bounds, base address #define IDTADDR 0x8000//store base address of the IDT descriptor struct #define IDTNUM 0x81//Create 0x81=129 Interrupts (interrupt number: 0X0~0X80)//need to use

Geometry Shader Summary

What is Geometry ShaderThe GS exists between the Vertext shader and the fixed function vertex post-processing stage, which is optional and not necessary.The GS input is a single primitive, and the output may be 0 or more primitive.The role of GSThe main function of GS is to generate new primitive from existing primitive, which can generate new vertices "out of no

Performance Comparison Between the CPU and video card of the notebook

No 2 m 533 Yes No Json3 Core t1x00 Series No 2 m 667 Yes No Json3 Core t1x50 Series No 2 m 533 Yes No Json3 Core t2x50 Series Yes 2 m 533 Yes No Json3 Core t1x50 Series No 2 m 533 Yes No Json3 Pentium dual-core t2xx0 Series Yes 1 m 533 Yes No Non-Gender Sai Yang m5x0 Series

GPS latitude and longitude converted to rotated plane coordinates

* * @param LNG * @param lat * @return */public int[] Getxy (double LNG, double lat) {///compare with reference points longitude calculate coordinates if (LNG > D34[0]) {return getXY1 (LNG, LAT);} else {return getXY2 (LNG, LAT);}} /** * The fixed point is the baseline xy coordinate */private int[] getXY1 (double LNG, double lat) {//WillLatitude converted to Gaussian projection coordinates double[] GS = Bltogauss (LNG, LAT);//with point 34 transverse g

Coding and decoding of QR code QRCode using Java

content, String imgPath ){ Try { Qrcode qrcodeHandler = new Qrcode (); QrcodeHandler. setQrcodeErrorCorrect ('M '); QrcodeHandler. setQrcodeEncodeMode ('B '); QrcodeHandler. setQrcodeVersion (7 ); System. out. println (content ); Byte [] contentBytes = content. getBytes ("gb2312 "); BufferedImage bufImg = new BufferedImage (140,140, BufferedImage. TYPE_INT_RGB ); Graphics2D gs = bufImg. createGraphics (); Gs

0-day security: software vulnerability analysis technology (version 2nd)

SQL injection attacks 2478.2.1 SQL Injection principle 2478.2.2 attack PHP + MySQL website 2488.2.3 attack ASP + SQL Server website 2508.2.4 detection and prevention of injection attacks 2528.3 other injection methods 2538.3.1 cookie injection, bypassing the marqino line 2538.3.2 XPath injection, XML Achilles' heel 2548.4 XSS attacks 2558.4.1 reason why the script can be "Cross-Site" 2558.4.2 XSS reflection attack scenario 2568.4.3 stored XSS attack scenario 2588.4.4 attack case review: XSS wor

Python Matplotlib (13) Subplot grid display __python

Code: Import Matplotlib.pyplot as Plt import Matplotlib.gridspec as Gridspec # Method1:subplot2grid plt.figure ( ) ax1 = Plt.subplot2grid ((3, 3), (0, 0), colspan=3, rowspan=1) Ax1.plot ([1, 2], [1, 2]) ax1.set_title (' ax1_ Title ') ax2 = Plt.subplot2grid ((3, 3), (1, 0), colspan=2, rowspan=1) ax3 = Plt.subplot2grid ((3, 3), (1, 2), Colspa N=1, rowspan=2) ax4 = Plt.subplot2grid ((3, 3), (2, 0), Colspan=1, rowspan=1) ax5 = Plt.subplot2grid ((3, 3), (2, 1) , Colspan=1, Rowspan=1) # Method2:gri

2.Spring Building a rest Web Service

We have already had a preliminary understanding of spring in the previous article, and next we will continue to learn new technologies on our website. Original address: https://spring.io/guides/gs/rest-service/This guide guides you through the process of creating a "Hello World" REST Web service using spring.1. What are you going to build?Tips: As mentioned above, we're going to use spring to create a "Hello World" REST Web service, but what's the end

First, the boot into real mode--BIOS->MBR (hard disk sector copy function)->loader

on the hard drive into the 0x900 of the memory address main boot program;------------------------------------------------------------%include "Boot.inc" Section MBR vstart=0x7c00 mov ax,cs mov ds,ax mov es,ax mov ss,ax mov fs,ax mov mov ax,0xb800 mov gs,ax; Output string: MBR mov byte [gs:0x00], ' M ' mov byte [gs:0x01],0xa4 mov eax,loader_start_sector; Sta

Implementation of an operating system note (6)--Process

storing process state information-Kernel stack – stack used by the Process Scheduler module when it runs1th Step –ring0->ring1 To start the first process, we use the iretd instruction to implement the transfer from RING0 to Ring1, and after the transfer succeeds, we can assume that a process is running. Process table Data structure typedef struct S_STACKFRAME {/* proc_ptr points Here↑low */u32 GS; /*┓│*/U32 FS; /*┃│*/u32 es; /*┃│*/u32 ds;

PHP captures GoogleIP and automatically modifies the hosts file

']);} if (isset ($ params ['del ']) {define ('delete _ GOOGLE_HOST', true) ;}} defined ('Google _ HOST_URL ') | define ('Google _ HOST_URL ',' http://www.360kb.com/kb/2_150.html '); If (PHP_ OS = 'winnt') {define ('hosts _ FILE_PATH ', 'c: WindowsSystem32driversetchosts');} else if (in_array (PHP_ OS, array ('linux ', 'darwin', 'freebsd', 'opensdk', 'win32 ', 'windows', 'unix '))) {define ('hosts _ FILE_PATH ','/etc/hosts');} else {die ('unororted system! '. PHP_EOL);} if (! Is_writable (HOSTS_F

Linux head. s

.# Ignore_int. The specific setting method is as follows: first, set the default interrupt gate descriptor 0 ~ In the eax and EDX registers respectively ~ 3# Bytes and 4 ~ 7-byte content, and then use this register to fill the default interrupt gate descriptor content in the loop to the IDT table.68 setup_idt: # Set all 256 interrupt gate descriptors to use the default processing process.69lea ignore_int, % edX # The setting method is the same as setting the timed interrupt gate descriptor.70 mo

Simulate native BIND () functions compatible with earlier versions of IE browsers

Label: style blog HTTP color Io ar use Java Simulate and implement native BIND () functions compatible with earlier versions of IE:For more information about the basic functions of JavaScript BIND (), see section 1 about the usage of JavaScript BIND () functions.However, this function is not supported in IE8 and IE8 browsers. The following describes how to simulate and implement this function.The Code is as follows: If (! Function. Prototype. Bind) {function. Prototype. Bind = function (othis) {

bzoj4028: [HEOI2015] Convention number series

>void_ (tx) { intc=*++ptr; X=0; while(c -) c=*++ptr; while(c> -) x=x*Ten+c- -, c=*++ptr;}int_c () {intc=*++ptr; while(c>'Z'|| c'A') c=*++ptr; intR=C; while(c>='A'c'Z') c=*++ptr; returnR;}BOOLdt[555];intn,q,a[100007],b,id[100007],ls[555],rs[555],gs[555];intxa[555];structpos{intx, y; BOOL operatorConst{returny!=w.y?yw.x;}} vs[100007];intgcdintAintb) { for(intc;b;c=a,a=b,b=c%b); returnA;}intbit[100007];voidXaddintWinta) { for(; wA;}intXsum

Tree heuristic merging (DSU on tree)

(intI=1; i) { intb; scanf ("%d%d",a,b); Adde (A, b); } DFS (1); for(intI=1; i"%d\n", Anss[i]);}Here is a halal Nlogn approach: EDGintN,cc[sz],col[sz],ks[sz],anss[sz];intSz[sz],son[sz];voidGsintXintf=0) {Sz[x]=1; forESB (x,e,b) {if(b==f)Continue; GS (B,X); SZ[X]+=Sz[b]; if(Sz[b]>sz[son[x]]) son[x]=b; }}intskip=0; voidEDTintXintFintv) {Cc[col[x]]+=v; forESB (x,e,b)if(b!=fb!=Skip) EDT (B,X,V);}voidDfsintXintf=0,BOOLkep=0){ forESB (x,

Heap:expedition (POJ 2431)

                  Expedition TeamThe main idea: a car to go from one place to another, the beginning of the car's fuel tank has a p-liter oil, the car every walk 1 distance consumption 1 liters of oil, no oil car can not travel, the road has a gas station, you can refuel for the car, set up a car cylinder is unlimited size, ask you can go to the end? If so, what is the minimum number of gas stations to be used?This problem can be understood, because we only use the smallest number of gas station

Linear sieve function of Bzoj 2693:jzptab

#includeusing namespacestd;#defineMaxp 10010000#defineMAXN 10010000#defineMOD 100000009typedefLong LongQword;BOOLPFLAG[MAXP];intprime[maxp],topp=-1;intPHI[MAXP];intGg[maxp];qword GS[MAXP];intMU[MAXP];voidinit () {phi[1]=1; gg[1]=1; mu[1]=1; for(intI=2; i) { if(!Pflag[i]) {prime[++topp]=i; Phi[i]=i-1; Gg[i]=1-i; Mu[i]=-1; } for(intj=0; J) {Pflag[i*prime[j]]=true; if(i%prime[j]==0) {Phi[i*prime[j]]=phi[i]*Prime[j];

Java Seventh time job

determine whether the contents of the array are full or not full, add Public BooleanAdd (Goods g) {if( This.foot This. Goods.length) { This. goods[foot]=G;foot++;return true;}Else{return false;}} //keyword search Publicgoods[] Search (String keyword) {Goods go[]=NULL; intCount=0; for(inti=0;i This. goods.length;i++){ if(goods[i]!=NULL){ if( This. Goods[i].getname (). INDEXOF (keyword)!=-1) {Count++; }}}go=NewGoods[count]; intF=0; for(inti=0;i This. goods.length;i++){ if(g

Understand java internal classes

!! ";// Method ExternalPrivate class Content implements Contents {Private String name = "apple" + des;@ OverridePublic String value (){Return name;}}// Method ExternalPrivate class GDestination implements Destination {Private String label;Private GDestination (String label ){This. label = label;}@ OverridePublic String readLabel (){Return label;}}// Anonymous internal classPublic Destination getdestination (final String label ){Return new Destination (){@ OverridePublic String readLabel (){Retu

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