(转)Delphi版木马彩衣一个简单的花指令伪装器

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(转)Delphi版木马彩衣一个简单的花指令伪装器

附程序源码，有很多地方需要改进
{pe花指令加密，参考 fi7ke 的 PE花指令加密一文
Author:hnxyy QQ:19026695 2005.11.24
说明：以VC++6的花指令为例说明

//VC++6外衣 1
OEPCODEFIVE: THEAD =
($55, $8B, $EC, $6A, $FF, $68, $00, $00, $00, $00, $68, $00, $00, $00, $00, $64,
$A1, $00, $00, $00, $00, $50, $64, $89, $25, $00, $00, $00, $00, $83, $EC, $68,
$53, $56, $57, $58, $58, $58, $83, $C4, $68, $58, $67, $64, $A3, $00, $00, $58,
$58, $58, $58, $8B, $E8, $E9, $07, $B9, $FE, $FF, $00, $00, $00, $00, $00, $00);

//VC++6外衣 2
OEPCODEFIVE: THEAD =
($55, $8B, $EC, $6A, $FF, $68, $00, $00, $00, $00, $68, $00, $00, $00, $00, $64,
$A1, $00, $00, $00, $00, $50, $64, $89, $25, $00, $00, $00, $00, $83, $EC, $68,
$53, $56, $57, $58, $58, $58, $83, $C4, $68, $58, $67, $64, $A3, $00, $00, $58,
$58, $58, $58, $8B, $E8, $B8, $00, $10, $40, $00, $FF, $E0, $90, $00, $00, $00);

1.直接将入口地址赋给寄存器eax,然后jmp eax
0046902A     B8 304A4500   mov eax,Project1.00454A30
0046902F     FFE0          jmp eax
00469031     90            nop
2. 直接跳转到入口地址
00469124   - E9 07B9FEFF   jmp Project1.00454A30
两种效果实际上是一样的,但我们为了方便修改花指令跳转到原来的入口地址，通常取得原
pe header的AddressOfEntryPoint,然后给寄存器eax保存改值，所以第二种方法就不太方便，
所以一般采用第一种方法，JMPOFF为花指令代码到跳转指令的偏移，如对Visual C++的花指令
JMPOFF=54,其后免跟的是原入口地址，可以随便填写，程序加花指令是会自动修改，一般可以
默认设为00104000(即00401000).
通过汇编修改花指令跳转原入口地址的语句:
asm   //这里说明一下，这是嵌入的汇编代码,寄存器—CPU暂时储存数据的东西，比内存更快，以提高效率
PUSHAD
LEA eax, OEPCODE //将OEPCODE的地址交给寄存器
ADD eax, JMPOFF   //添加JMPOFF值给寄存器
MOV edx, AddressOfEntryPoint   //转移指令，相当于付值语句，左边给右边
MOV DWORD ptr [eax], edx    //同上
POPAD
end;
}
unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ExtCtrls, ShellAPI;

type
TForm1 = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    RadioGroup1: TRadioGroup;
    Label2: TLabel;
    Edit2: TEdit;
    Label3: TLabel;
    Edit3: TEdit;
    CheckBox1: TCheckBox;
    Button2: TButton;
    Label5: TLabel;
    OpenDialog1: TOpenDialog;
    Label4: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure obtain;
    procedure Button2Click(Sender: TObject);
    procedure Label4Click(Sender: TObject);
    procedure Edit3KeyPress(Sender: TObject; var Key: Char);
private
    { Private declarations }
    FImageBase: DWORD;
    procedure SetOepCode;
public
    { Public declarations }
end;

THEAD = array[0..63] of byte;

var
Form1: TForm1;

const
{MYSECTION = 'Fi7ke'; //添加的节名，自定义
JMPOFF = 43; //花指令的机器码,Ollydbg加载后随便取
//Microsoft Visual C++
OEPCODE: THEAD =
   ($55, $8B, $EC, $6A, $FF, $68, $2A, $2C, $0A, $00, $68, $38,
    $90, $0D, $00, $64, $A1, $00, $00, $00, $00, $50, $64, $89,
    $25, $00, $00, $00, $00, $58, $64, $A3, $00, $00, $00, $00,
    $58, $58, $58, $58, $8B, $E8, $B8, $00, $10, $40, $00, $FF,
    $E0, $90, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00,
    $00, $00, $00, $00);     }

    //Nothing found * one
    OEPCODEONE: THEAD =
    ($55, $8B, $EC, $83, $C4, $F4, $83, $C4, $0C, $B8, $00, $10, $40, $00, $50, $C3,
     $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00,
     $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00,
     $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00);

    //Nothing found * two
    OEPCODETWO: THEAD =
    ($55, $8B, $EC, $41, $52, $90, $5A, $49, $5D, $41, $B8, $00, $10, $40, $00, $FF,
     $E0, $90, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00,
     $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00,
     $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00);

    //VC++外衣
    OEPCODETHREE: THEAD =
    ($55, $8B, $EC, $6A, $FF, $68, $2A, $2C, $0A, $00, $68, $38, $90, $0D, $00, $64,
     $A1, $00, $00, $00, $00, $50, $64, $89, $25, $00, $00, $00, $00, $58, $64, $A3,
     $00, $00, $00, $00, $58, $58, $58, $58, $8B, $E8, $B8, $00, $10, $40, $00, $FF,
     $E0, $90, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00);

    //VC++5外衣
    OEPCODEFOUR: THEAD =
    ($55, $8B, $EC, $6A, $FF, $68, $48, $54, $41, $00, $68, $A8, $21, $40, $00, $64,
     $A1, $00, $00, $00, $00, $50, $64, $89, $25, $00, $00, $00, $00, $83, $C4, $94,
     $53, $56, $57, $00, $00, $B8, $00, $10, $40, $00, $FF, $E0, $90, $00, $00, $00,
     $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00);

     //VC++6外衣
    OEPCODEFIVE: THEAD =
    ($55, $8B, $EC, $6A, $FF, $68, $00, $00, $00, $00, $68, $00, $00, $00, $00, $64,
     $A1, $00, $00, $00, $00, $50, $64, $89, $25, $00, $00, $00, $00, $83, $EC, $68,
     $53, $56, $57, $58, $58, $58, $83, $C4, $68, $58, $67, $64, $A3, $00, $00, $58,
     $58, $58, $58, $8B, $E8, $B8, $00, $10, $40, $00, $FF, $E0, $90, $00, $00, $00);

    //C外衣
    OEPCODESIX: THEAD =
    ($55, $8B, $EC, $6A, $FF, $68, $11, $11, $11, $00, $68, $22, $22, $22, $00, $64,
     $A1, $00, $00, $00, $00, $50, $64, $89, $25, $00, $00, $00, $00, $58, $64, $A3,
     $00, $00, $00, $00, $58, $58, $58, $58, $8B, $E8, $B8, $00, $10, $40, $00, $FF,
     $E0, $90, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00);

   OepCount = 6;

//OEPCODEARRAY :array[0..OepCount-1,0..63] of byte=(
//OEPCODEARRAY :array[0..OepCount-1] of array[0..63] of byte=(
OEPCODEARRAY :array[0..OepCount-1] of THEAD=(
    ($55, $8B, $EC, $83, $C4, $F4, $83, $C4, $0C, $B8, $00, $10, $40, $00, $50, $C3,
     $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00,
     $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00,
     $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00), //Nothing found * one
    ($55, $8B, $EC, $6A, $FF, $68, $2A, $2C, $0A, $00, $68, $38, $90, $0D, $00, $64,
     $A1, $00, $00, $00, $00, $50, $64, $89, $25, $00, $00, $00, $00, $58, $64, $A3,
     $00, $00, $00, $00, $58, $58, $58, $58, $8B, $E8, $B8, $00, $10, $40, $00, $FF,
     $E0, $90, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00), //VC++外衣
    ($55, $8B, $EC, $6A, $FF, $68, $48, $54, $41, $00, $68, $A8, $21, $40, $00, $64,
     $A1, $00, $00, $00, $00, $50, $64, $89, $25, $00, $00, $00, $00, $83, $C4, $94,
     $53, $56, $57, $00, $00, $B8, $00, $10, $40, $00, $FF, $E0, $90, $00, $00, $00,
     $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00), //VC++5外衣
    ($55, $8B, $EC, $6A, $FF, $68, $00, $00, $00, $00, $68, $00, $00, $00, $00, $64,
     $A1, $00, $00, $00, $00, $50, $64, $89, $25, $00, $00, $00, $00, $83, $EC, $68,
     $53, $56, $57, $58, $58, $58, $83, $C4, $68, $58, $67, $64, $A3, $00, $00, $58,
     $58, $58, $58, $8B, $E8, $B8, $00, $10, $40, $00, $FF, $E0, $90, $00, $00, $00), //VC++6外衣
    ($55, $8B, $EC, $6A, $FF, $68, $11, $11, $11, $00, $68, $22, $22, $22, $00, $64,
     $A1, $00, $00, $00, $00, $50, $64, $89, $25, $00, $00, $00, $00, $58, $64, $A3,
     $00, $00, $00, $00, $58, $58, $58, $58, $8B, $E8, $B8, $00, $10, $40, $00, $FF,
     $E0, $90, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00),   //C外衣
    ($55, $8B, $EC, $41, $52, $90, $5A, $49, $5D, $41, $B8, $00, $10, $40, $00, $FF,
     $E0, $90, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00,
     $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00,
     $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00) //Nothing found * two
);

JMPOFFARRAY :array[0..OepCount-1] of integer=(10,43,38,54,43,11);

{Nothing found * ONE：
Borland Delphi 6.0 - 7.0

00469022     0055 8B       add byte ptr ss:[ebp-75],dl
00469025     EC            in al,dx
00469026     83C4 F4       add esp,-0C
00469029     83C4 0C       add esp,0C
0046902C     B8 304A4500   mov eax,Project1.00454A30
00469031     50            push eax
00469032     C3            retn

Nothing found * TWO

00454A72       55          push ebp
00454A73       8BEC        mov ebp,esp
00454A75       41          inc ecx
00454A76       52          push edx
00454A77       90          nop
00454A78       5A          pop edx
00454A79       49          dec ecx
00454A7A       5D          pop ebp
00454A7B       41          inc ecx
0046902A     B8 304A4500   mov eax,Project1.00454A30
0046902F     FFE0          jmp eax
00469031     90            nop

C外衣：

00454A6C       55          push ebp
00454A6D       8BEC        mov ebp,esp
00454A6F       6A FF       push -1
00454A71       68 11111100 push 111111
00454A76       68 22222200 push 222222
00454A7B       64:A1 00000>mov eax,dword ptr fs:[0]
00454A81       50          push eax
00454A82       64:8925 000>mov dword ptr fs:[0],esp
00454A89       58          pop eax
00454A8A       64:A3 00000>mov dword ptr fs:[0],eax
00454A90       58          pop eax
00454A91       58          pop eax
00454A92       58          pop eax
00454A93       58          pop eax
00454A94       8BE8        mov ebp,eax
00454A96     - E9 65F5CAFF jmp 00104000

VC++5外衣:

0046905F P> 55            push ebp
00469060     8BEC          mov ebp,esp
00469062     6A FF         push -1
00469064     68 48544100   push Project1.00415448
00469069     68 A8214000   push Project1.004021A8
0046906E     64:A1 0000000>mov eax,dword ptr fs:[0]
00469074     50            push eax
00469075     64:8925 00000>mov dword ptr fs:[0],esp
0046907C     83C4 94       add esp,-6C
0046907F     53            push ebx
00469080     56            push esi
00469081     57            push edi
00469082     0000          add byte ptr ds:[eax],al
0046902A     B8 304A4500   mov eax,Project1.00454A30
0046902F     FFE0          jmp eax
00469031     90            nop

VC++外衣：

00469000 P> 55            push ebp
00469001     8BEC          mov ebp,esp
00469003     6A FF         push -1
00469005     68 2A2C0A00   push 0A2C2A
0046900A     68 38900D00   push 0D9038
0046900F     64:A1 0000000>mov eax,dword ptr fs:[0]
00469015     50            push eax
00469016     64:8925 00000>mov dword ptr fs:[0],esp
0046901D     58            pop eax
0046901E     64:A3 0000000>mov dword ptr fs:[0],eax
00469024     58            pop eax
00469025     58            pop eax
00469026     58            pop eax
00469027     58            pop eax
00469028     8BE8          mov ebp,eax
0046902A     B8 304A4500   mov eax,Project1.00454A30
0046902F     FFE0          jmp eax
00469031     90            nop

VC++6外衣：

004690EF P> 55            push ebp
004690F0     8BEC          mov ebp,esp
004690F2     6A FF         push -1
004690F4     68 00000000   push 0
004690F9     68 00000000   push 0
004690FE     64:A1 0000000>mov eax,dword ptr fs:[0]
00469104     50            push eax
00469105     64:8925 00000>mov dword ptr fs:[0],esp
0046910C     83EC 68       sub esp,68
0046910F     53            push ebx
00469110     56            push esi
00469111     57            push edi
00469112     58            pop eax
00469113     58            pop eax
00469114     58            pop eax
00469115     83C4 68       add esp,68
00469118     58            pop eax
00469119     67:64:A3 0000 mov dword ptr fs:[0],eax
0046911E     58            pop eax
0046911F     58            pop eax
00469120     58            pop eax
00469121     58            pop eax
00469122     8BE8          mov ebp,eax
0046902A     B8 304A4500   mov eax,Project1.00454A30
0046902F     FFE0          jmp eax
00469031     90            nop

}

function IntToHex(Int: Int64; IntSize: Byte): String;
procedure AddSection(FName,MySection: string;SecSize:DWord);

implementation

{$R *.dfm}

var
OEPCODE: THEAD;
JMPOFF :integer;

function IntToHex(Int: Int64; IntSize: Byte): String;
const
HexChars: array[0..15] of Char = ('0', '1', '2', '3', '4', '5','6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f');
var
n: Byte;
begin
Result := '';
for n := 0 to IntSize - 1 do
begin
    Result := HexChars[Int and $F] + Result;
    Int := Int shr $4;
end;
end;

procedure AddSection(FName,MySection: string;SecSize:DWord);
var
DOSHEADER: IMAGE_DOS_HEADER; //DOS MZ header
PEHEADER: IMAGE_NT_HEADERS;   //PE header
SectionHeader: IMAGE_SECTION_HEADER; //节表
MySectionHeader: IMAGE_SECTION_HEADER; //自定义节表
fs: TFileStream;
AddressOfEntryPoint: DWORD; //入口点
i:integer;
begin
fs := TFileStream.Create(FName, fmOpenReadWrite +
    fmShareDenyWrite);
try
    {Tstream中定义的虚方法有四个：
    1、Read:此方法实现将数据从流中读出。函数原形为：
    Function Read(var Buffer;Count:Longint):Longint;virtual;abstract;
    参数Buffer为数据读出时放置的缓冲区，Count为需要读出的数据的字节数，该方法返回值为实际读出的字节数，它可以小于或等于Count中指定的值。
    2、Write:此方法实现将数据写入流中。函数原形为：
    Function Write(var Buffer;Count:Longint):Longint;virtual;abstract;
    参数Buffer为将要写入流中的数据的缓冲区，Count为数据的长度字节数，该方法返回值为实际写入流中的字节数。
    3、Seek:此方法实现流中读取指针的移动。函数原形为：
    Function Seek(Offset:Longint;Origint:Word):Longint;virtual;abstract;
    参数Offset为偏移字节数,参数Origint指出Offset的实际意义，其可能的取值如下：
    soFromBeginning:Offset为移动后指针距离数据开始的位置。此时Offset必须大于或者等于零。
    soFromCurrent:Offset为移动后指针与当前指针的相对位置。
    soFromEnd:Offset为移动后指针距离数据结束的位置。此时Offset必须小于或者等于零。该方法返回值为移动后指针的位置。
    4、Setsize:此方法实现改变数据的大小。函数原形为：
    Function Setsize(NewSize:Longint);virtual; }
    //将指针偏移量放到文件头部
    fs.Seek(0, soFromBeginning);
    //读取DOS头信息
    fs.Read(DOSHEADER, sizeof(DOSHEADER));
    //DOS MZ header 又命名为 IMAGE_DOS_HEADER.。其中只有两个域比较重要:
    //e_magic 包含字符串"MZ"，e_lfanew 包含PE header在文件中的偏移量。
    //将指针移到PE header在文件中的偏移量
    fs.Seek(DOSHEADER._lfanew, soFromBeginning);
    //读取PE header头信息
    fs.Read(PEHEADER, sizeOf(PEHEADER));
    //PEHEADER.FileHeader.NumberOfSections:文件的节数目。如果我们要在文件中增加或删除一个节，就需要修改这个值。
    //将指针移到节表在当前位置的相对偏移量
    fs.Seek(sizeOf(SectionHeader) *
      (PEHEADER.FileHeader.NumberOfSections - 1), soFromCurrent);
    //读取节表的信息
    fs.Read(SectionHeader, sizeof(IMAGE_SECTION_HEADER));
    //节名长不超过8字节。记住节名仅仅是个标记而已,我们选择任何名字甚至空着也行
{ MySectionHeader.Name[0] := ord('F');
    MySectionHeader.Name[1] := ord('i');
    MySectionHeader.Name[2] := ord('7');
    MySectionHeader.Name[3] := ord('k');
    MySectionHeader.Name[4] := ord('e');
    MySectionHeader.Name[5] := 0;
    MySectionHeader.Name[6] := 0;
    MySectionHeader.Name[7] := 0; }
    for i:=0 to 7 do
    begin
      MySectionHeader.Name[i] :=0;
      if i<length(MySection) then
        MySectionHeader.Name[i] :=Ord(MySection[i+1]);
    end;
    //VirtualAddress 本节的RVA（相对虚拟地址）。PE装载器将节映射至内存时会读取本值，因此如果域值是1000h，
    //而PE文件装在地址400000h处，那么本节就被载到401000h。
    //SizeOfImage 内存中整个PE映像体的尺寸。它是所有头和节经过节对齐处理后的大小。
    MySectionHeader.VirtualAddress := PEHEADER.OptionalHeader.SizeOfImage;
    //节的大小 $200十六进制＝ 512字节最好大于 512 不然可能会出错
    //MySectionHeader.Misc.VirtualSize := $200;
    MySectionHeader.Misc.VirtualSize := SecSize; //StrToInt(IntToHex(SecSize,sizeof(SecSize)));
    //SizeOfRawData 经过文件对齐处理后节尺寸，PE装载器提取本域值了解需映射入内存的节字节数。
    //（译者注: 假设一个文件的文件对齐尺寸是0x200，如果前面的 VirtualSize域指示本节长度是0x388字节，
    //则本域值为0x400，表示本节是0x400字节长）。
    //FileAlignment 文件中节对齐的粒度。例如，如果该值是(200h),，那么每节的起始地址必须是512的倍数。
    //若第一节从文件偏移量200h开始且大小是10个字节，则下一节必定位于偏移量400h:
    //即使偏移量512和1024之间还有很多空间没被使用/定义。
    MySectionHeader.SizeOfRawData := (MySectionHeader.VirtualAddress div
      PEHEADER.OptionalHeader.FileAlignment + 1) * PEHEADER.OptionalHeader.FileAlignment -
      PEHEADER.OptionalHeader.SizeOfImage;
    //这是节基于文件的偏移量，PE装载器通过本域值找到节数据在文件中的位置。
    MySectionHeader.PointerToRawData :=
      SectionHeader.SizeOfRawData + SectionHeader.PointerToRawData;
    //包含标记以指示节属性，比如节是否含有可执行代码、初始化数据、未初始数据，是否可写、可读等。
    MySectionHeader.Characteristics := $E0000020;
    {PE装载器的工作:
    1.读取 IMAGE_FILE_HEADER 的 NumberOfSections域，知道文件的节数目。
    2.SizeOfHeaders 域值作为节表的文件偏移量，并以此定位节表。
    3.遍历整个结构数组检查各成员值。
    4.对于每个结构，我们读取PointerToRawData域值并定位到该文件偏移量。然后再读取SizeOfRawData域值来决定
    映射内存的字节数。将VirtualAddress域值加上ImageBase域值等于节起始的虚拟地址。然后就准备把节映射进内存，
    并根据Characteristics域值设置属性。
    5.遍历整个数组，直至所有节都已处理完毕。
    注意我们并没有使用节名: 这其实并不重要。}
    //节表数量加一
    Inc(PEHEADER.FileHeader.NumberOfSections);
    //写入新加入的节表
    fs.Write(MySectionHeader, sizeOf(MySectionHeader));
    //将指针移到PE header在文件中的偏移量
    fs.Seek(DOSHEADER._lfanew, soFromBeginning);
    //PE装载器准备运行的PE文件的第一个指令的RVA。若您要改变整个执行的流程，
    //可以将该值指定到新的RVA，这样新RVA处的指令首先被执行。
    AddressOfEntryPoint := PEHEADER.OptionalHeader.AddressOfEntryPoint;
    //将入口地址指定到新加节表的RVA(相对虚拟地址)
    PEHEADER.OptionalHeader.AddressOfEntryPoint :=
      MySectionHeader.VirtualAddress;
    //win32子系统版本。
    PEHEADER.OptionalHeader.MajorLinkerVersion := 7;
    PEHEADER.OptionalHeader.MinorLinkerVersion := 0;
    AddressOfEntryPoint := AddressOfEntryPoint +
      PEHEADER.OptionalHeader.ImageBase;

    asm   //这里说明一下，这是嵌入的汇编代码,寄存器—CPU暂时储存数据的东西，比内存更快，以提高效率
      PUSHAD
      LEA eax, OEPCODE //将OEPCODE的地址交给寄存器
      ADD eax, JMPOFF   //添加JMPOFF值给寄存器
      MOV edx, AddressOfEntryPoint   //转移指令，相当于付值语句，左边给右边
      MOV DWORD ptr [eax], edx    //同上
      POPAD
    end;
    //更改内存中整个PE映像体的尺寸
    PEHEADER.OptionalHeader.SizeOfImage :=
      PEHEADER.OptionalHeader.SizeOfImage + MySectionHeader.Misc.VirtualSize;
    //写入PEHEADER信息
    fs.Write(PEHEADER, sizeof(PEHEADER));
    //移动指针到文件尾部
    fs.Seek(fs.Size, soFromBeginning);
    //写入花指令数据
    fs.Write(OEPCODE, MySectionHeader.Misc.VirtualSize);
finally
    fs.Free;
end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
if OpenDialog1.Execute then
    edit1.Text :=OpenDialog1.FileName;
end;

procedure TForm1.obtain;
var
DOSHEADER: IMAGE_DOS_HEADER;
PEHEADER: IMAGE_NT_HEADERS;
fs: TFileStream;
begin
fs := TFileStream.Create(Edit1.Text, fmOpenReadWrite +
    fmShareDenyWrite);
try
    fs.Seek(0, soFromBeginning);
    fs.Read(DOSHEADER, sizeof(DOSHEADER));

    fs.Seek(DOSHEADER._lfanew, soFromBeginning);
    fs.Read(PEHEADER, sizeOf(PEHEADER));
    FImageBase := PEHEADER.OptionalHeader.ImageBase;
finally
    fs.Free;
end;
end;

procedure TForm1.Button2Click(Sender: TObject);
var
FName,SecName:string;
SecSize:DWord;
begin
if trim(Edit1.Text) = '' then
begin
    Messagebox(Handle, '请选择你要伪装的程序!', '提示', MB_OK + MB_ICONSTOP);
    Exit;
end;
FName :=trim(Edit1.Text);
SecName :=trim(Edit2.Text);
if SecName='' then SecName:='.hnxyy';
SecSize :=512;
if trim(edit3.Text)<>'' then
begin
    SecSize :=strtoint(trim(Edit3.Text));
    if SecSize<512 then SecSize :=512;
end;
if CheckBox1.Checked then
    CopyFile(PChar(FName),PChar(Fname+'.bak'),False);
SetOepCode;
AddSection(FName,SecName,SecSize);
Messagebox(Handle, '伪装成功!', '提示', MB_OK + MB_ICONINFORMATION);
end;

procedure TForm1.SetOepCode;
begin
OEPCODE :=OEPCODEARRAY[RadioGroup1.ItemIndex];
JMPOFF :=JMPOFFARRAY[RadioGroup1.ItemIndex];
end;

procedure TForm1.Label4Click(Sender: TObject);
begin
ShellExecute(Handle, 'open','http://forum.wrsky.com', '', '', SW_SHOWNORMAL);
end;

procedure TForm1.Edit3KeyPress(Sender: TObject; var Key: Char);
begin
if not (key in ['0'..'9',#8,#13]) then
begin
    key :=#0;
end;
end;

end.

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原文地址：https://www.cnblogs.com/chengxin1982/p/1587801.html