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J.J. Huang   2019-08-28   x64dbg   瀏覽次數:次   DMCA.com Protection Status

x64dbg - 第二十三章 | 反匯編練習(十二)

目標程式

檔案下載:XoftSpy413_96.exe
解壓密碼:morosedog


程式簡介

保護你的隱私和身份!間諜軟件可以在你不知情的情況下安裝在計算機上。很難找到並且難以刪除,間諜軟件可用於竊取你的機密訊息,從而導致身份盜用和信用卡欺詐。任何上網或與其他人共享文件的人都有風險。xoftspy檢測並刪除嘗試在你的PC上安裝的所有間諜軟件。主要功能包括:完整的PC掃描,包括運行流程,註冊表項,文件和文件夾,檢測和刪除間諜軟件,廣告軟件,彈出式發生器,鍵盤記錄程序,特洛伊木馬,瀏覽器劫持程序和惡意軟件,自動定義和功能更新,全面的客戶技術支持,防止身份盜用和信用卡欺詐。


前置作業

  • 下載目標程式並解壓縮
  • 執行XoftSpy413_96.exe,一路Next安裝
  • Finish開啟主程式
  • Loading definitions from file.會卡比較久
  • XoftSpy.exe,右鍵選擇內容->相容性->勾選以相容模式執行這個程式->選擇Windows XP (Service Pack 3)->勾選以系統管理員的身份執行此程式

註:因為軟體老舊,所以用Windows XP來執行,方可正常開啟。


任務目標

  • 破解註冊。

分析程式

  • 開啟XoftSpy.exe
  • Loading definitions from file.會卡比較久
  • 點擊About
  • 點擊Registration Code
  • 點擊OK
  • 彈出Please fill all the details視窗
  • 輸入Enter UsernameEnter Registration Code
  • 點擊OK
  • 彈出Invalid code.視窗

檢驗顯示是使用Microsoft Visual C++ 6.0編寫。


額外補充


搜尋思路

  • C++撰寫的,使用函數搜尋 (輸入框函數:GetWindowTextA)
  • 使用搜尋字串找關鍵字。

修改思路

  • 修改驗證的邏輯

實際分析

  • 開啟XoftSpy.exe

  • 於反匯編視窗點選右鍵選擇搜尋(S)->目前模組->跨模組呼叫(I)

  • 發現GetWindowTextA,對其設定中斷點

  • F9執行程式

  • Loading definitions from file.會卡比較久

  • 斷點在00461E51 | FF15 F0034700 | call dword ptr ds:[<&GetWindowTextA>] |

  • 主程式還沒開啟,標示該斷點並非為輸入註冊碼的地方所使用

  • 00461E51移除中斷點

  • F9繼續執行

  • 斷點在0045B75D | FF15 F0034700 | call dword ptr ds:[<&GetWindowTextA>] |

  • 主程式還沒開啟,標示該斷點並非為輸入註冊碼的地方所使用

  • 0045B75D移除中斷點

  • F9繼續執行

  • 點擊About

  • 點擊Registration Code

  • 輸入Enter UsernameEnter Registration Code

  • 點擊OK

  • 斷點在004625AB | FF15 F0034700 | call dword ptr ds:[<&GetWindowTextA>] |

  • F8一步一步過,並持續觀察

  • 有三個Text所以會在004625AB斷點三次

  • 步過到下方指令時

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    0041749C   | 75 45                 | jne xoftspy.4174E3                       |
    0041749E | 6A 00 | push 0 |
    004174A0 | 68 04544800 | push xoftspy.485404 | 485404:"XoftSpy"
    004174A5 | 68 C4684800 | push xoftspy.4868C4 | 4868C4:"Invalid code."
    004174AA | 8BCE | mov ecx,esi | esi:"x G"==&"苾A"
    004174AC | E8 664F0400 | call xoftspy.45C417 |
  • 0041749C | 75 45 | jne xoftspy.4174E3 |跳轉未實現

  • 未跳過Invalid code.訊息

  • jne跳轉實現為ZF=0,我們將其修改為ZF=0

  • 跳轉到004174E3

  • F8繼續步過,持續觀察

  • 步過到下方指令時

    1
    00401105 | E8 5D020000              | call <JMP.&MessageBoxA>                     |
  • 彈出視窗Congratulations! successfully registered

  • 點擊確定

  • F9執行程式

  • 回到程式About

  • Enter Registration Code按鈕尚未消失

  • 發現程式並沒有真正破解

  • 在此可以確認單純的顯示註冊成功內容


  • 反匯編視窗中按下Ctrl + G輸入0041749C,會跳轉到0041749C位址

  • 向上觀察

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    00417495   | E8 F6010000           | call xoftspy.417690                      |
    0041749A | 84C0 | test al,al |
    0041749C | 75 45 | jne xoftspy.4174E3 |
  • 0041749A決定0041749C跳轉是否實現

  • 00417495call xoftspy.417690影響al

  • 移除所有中斷點

  • 00417495設定中斷點

  • 點擊Registration Code

  • 輸入Enter UsernameEnter Registration Code

  • 點擊OK

  • 斷點在00417495 | E8 F6010000 | call xoftspy.417690 |

  • F7步入

  • 觀察程式

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    00417690   | 6A FF                 | push FFFFFFFF                            |
    00417692 | 68 A89C4600 | push xoftspy.469CA8 |
    00417697 | 64:A1 00000000 | mov eax,dword ptr fs:[0] |
    0041769D | 50 | push eax |
    0041769E | 64:8925 00000000 | mov dword ptr fs:[0],esp |
    004176A5 | 83EC 1C | sub esp,1C |
    004176A8 | 53 | push ebx | ebx:&"5678"
    004176A9 | 56 | push esi | esi:"x G"==&"苾A"
    004176AA | 57 | push edi | edi:""==&"1234-5678"
    004176AB | 8B4424 38 | mov eax,dword ptr ss:[esp+38] |
    004176AF | 68 48FA4800 | push xoftspy.48FA48 |
    004176B4 | 50 | push eax |
    004176B5 | C74424 38 01000000 | mov dword ptr ss:[esp+38],1 |
    004176BD | E8 8A160300 | call xoftspy.448D4C |
    004176C2 | 83C4 08 | add esp,8 |
    004176C5 | 85C0 | test eax,eax |
    004176C7 | 0F84 28020000 | je xoftspy.4178F5 |
    004176CD | 8B4C24 3C | mov ecx,dword ptr ss:[esp+3C] | [esp+3C]:&"8EG"
    004176D1 | 68 48FA4800 | push xoftspy.48FA48 |
    004176D6 | 51 | push ecx |
    004176D7 | E8 70160300 | call xoftspy.448D4C |
    004176DC | 83C4 08 | add esp,8 |
    004176DF | 85C0 | test eax,eax |
    004176E1 | 0F84 0E020000 | je xoftspy.4178F5 |
    004176E7 | 8B5424 3C | mov edx,dword ptr ss:[esp+3C] | [esp+3C]:&"8EG"5678"
    004176EB | 837A F8 15 | cmp dword ptr ds:[edx-8],15 | edx-8:L"\t"
    004176EF | 0F8C 00020000 | jl xoftspy.4178F5 |
    004176F5 | 8D4424 1C | lea eax,dword ptr ss:[esp+1C] | [esp+1C]:"1234-5678"
    004176F9 | 6A 0B | push B |
    004176FB | 50 | push eax |
    004176FC | 8D4C24 44 | lea ecx,dword ptr ss:[esp+44] |
    00417700 | E8 93060400 | call xoftspy.457D98 |
    00417705 | 8B4C24 1C | mov ecx,dword ptr ss:[esp+1C] | [esp+1C]:"1234-5678"
    00417709 | 33F6 | xor esi,esi | esi:"x G"==&"苾A"
    0041770B | 33D2 | xor edx,edx | edx:"1234-5678"
    0041770D | C64424 30 02 | mov byte ptr ss:[esp+30],2 |
    00417712 | 897424 20 | mov dword ptr ss:[esp+20],esi | [esp+20]:"MOROSE"
    00417716 | 33C0 | xor eax,eax |
    00417718 | 0FBE3C08 | movsx edi,byte ptr ds:[eax+ecx] | edi:""==&"1234-5678"
    0041771C | 03D7 | add edx,edi | edx:"1234-5678", edi:""==&"1234-5678"
    0041771E | 40 | inc eax |
    0041771F | 83F8 0A | cmp eax,A | A:'\n'
    00417722 | 7E F4 | jle xoftspy.417718 |
    00417724 | 895424 24 | mov dword ptr ss:[esp+24],edx | [esp+24]:&"MOROSE"
    00417728 | 8B5424 38 | mov edx,dword ptr ss:[esp+38] |
    0041772C | 33C0 | xor eax,eax |
    0041772E | 8B4A F8 | mov ecx,dword ptr ds:[edx-8] | edx-8:L"\t"
    00417731 | 85C9 | test ecx,ecx |
    00417733 | 7E 0F | jle xoftspy.417744 |
    00417735 | 0FBE3C10 | movsx edi,byte ptr ds:[eax+edx] | edi:""==&"1234-5678", eax+edx*1:"1234-5678"34-5678"
    00417739 | 03F7 | add esi,edi | esi:"x G"==&"苾A", edi:""==&"1234-5678"
    0041773B | 40 | inc eax |
    0041773C | 3BC1 | cmp eax,ecx |
    0041773E | 7C F5 | jl xoftspy.417735 |
    00417740 | 897424 20 | mov dword ptr ss:[esp+20],esi | [esp+20]:"MOROSE"
    00417744 | 8B4C24 3C | mov ecx,dword ptr ss:[esp+3C] | [esp+3C]:&"8EG"
    00417748 | 55 | push ebp |
    00417749 | 8D5424 10 | lea edx,dword ptr ss:[esp+10] | [esp+10]:&"8EG"5678"
    0041774D | 8B41 F8 | mov eax,dword ptr ds:[ecx-8] | [ecx-8]:&"MOROSE"
    00417750 | 8D4C24 40 | lea ecx,dword ptr ss:[esp+40] |
    00417754 | 83C0 F4 | add eax,FFFFFFF4 |
    00417757 | 50 | push eax |
    00417758 | 52 | push edx | edx:"1234-5678"
    00417759 | E8 BE050400 | call xoftspy.457D1C |
    0041775E | 8D4424 1C | lea eax,dword ptr ss:[esp+1C] | [esp+1C]:"1234-5678"
    00417762 | 6A 03 | push 3 |
    00417764 | 50 | push eax |
    00417765 | 8D4C24 18 | lea ecx,dword ptr ss:[esp+18] |
    00417769 | C64424 3C 03 | mov byte ptr ss:[esp+3C],3 |
    0041776E | E8 25060400 | call xoftspy.457D98 |
    00417773 | 8B4C24 1C | mov ecx,dword ptr ss:[esp+1C] | [esp+1C]:"1234-5678"
    00417777 | C64424 34 04 | mov byte ptr ss:[esp+34],4 |
    0041777C | 51 | push ecx |
    0041777D | E8 5D210300 | call xoftspy.4498DF |
    00417782 | 99 | cdq |
    00417783 | 83C4 04 | add esp,4 |
    00417786 | 2BC2 | sub eax,edx | edx:"1234-5678"
    00417788 | 8D5424 18 | lea edx,dword ptr ss:[esp+18] |
    0041778C | 8BF0 | mov esi,eax | esi:"x G"==&"苾A"
    0041778E | 6A 03 | push 3 |
    00417790 | 6A 03 | push 3 |
    00417792 | 52 | push edx | edx:"1234-5678"
    00417793 | 8D4C24 1C | lea ecx,dword ptr ss:[esp+1C] | [esp+1C]:"1234-5678"
    00417797 | D1FE | sar esi,1 | esi:"x G"==&"苾A"
    00417799 | E8 E8040400 | call xoftspy.457C86 |
    0041779E | 8B4424 18 | mov eax,dword ptr ss:[esp+18] |
    004177A2 | C64424 34 05 | mov byte ptr ss:[esp+34],5 |
    004177A7 | 50 | push eax |
    004177A8 | E8 32210300 | call xoftspy.4498DF |
    004177AD | 99 | cdq |
    004177AE | 83C4 04 | add esp,4 |
    004177B1 | 83E2 03 | and edx,3 | edx:"1234-5678"
    004177B4 | 03C2 | add eax,edx | edx:"1234-5678"
    004177B6 | 8D4C24 14 | lea ecx,dword ptr ss:[esp+14] |
    004177BA | 6A 03 | push 3 |
    004177BC | 8BF8 | mov edi,eax | edi:""==&"1234-5678"
    004177BE | 51 | push ecx |
    004177BF | 8D4C24 18 | lea ecx,dword ptr ss:[esp+18] |
    004177C3 | C1FF 02 | sar edi,2 | edi:""==&"1234-5678"
    004177C6 | E8 51050400 | call xoftspy.457D1C |
    004177CB | 8B5424 14 | mov edx,dword ptr ss:[esp+14] |
    004177CF | 52 | push edx | edx:"1234-5678"
    004177D0 | E8 0A210300 | call xoftspy.4498DF |
    004177D5 | 8BC8 | mov ecx,eax |
    004177D7 | B8 56555555 | mov eax,55555556 |
    004177DC | F7E9 | imul ecx |
    004177DE | 8BC2 | mov eax,edx | edx:"1234-5678"
    004177E0 | 83C4 04 | add esp,4 |
    004177E3 | C1E8 1F | shr eax,1F |
    004177E6 | 03D0 | add edx,eax | edx:"1234-5678"
    004177E8 | 8B4424 3C | mov eax,dword ptr ss:[esp+3C] | [esp+3C]:&"8EG"
    004177EC | 8BDA | mov ebx,edx | ebx:&"5678", edx:"1234-5678"
    004177EE | 0FBE08 | movsx ecx,byte ptr ds:[eax] |
    004177F1 | 8B68 F8 | mov ebp,dword ptr ds:[eax-8] |
    004177F4 | 3BF1 | cmp esi,ecx | esi:"x G"==&"苾A"
    004177F6 | 0FBE50 01 | movsx edx,byte ptr ds:[eax+1] | edx:"1234-5678"
    004177FA | 0FBE4428 FF | movsx eax,byte ptr ds:[eax+ebp-1] |
    004177FF | 5D | pop ebp |
    00417800 | 0F85 A9000000 | jne xoftspy.4178AF |
    00417806 | 3BFA | cmp edi,edx | edi:""==&"1234-5678", edx:"1234-5678"34-5678"
    00417808 | 0F85 A1000000 | jne xoftspy.4178AF |
    0041780E | 3BD8 | cmp ebx,eax | ebx:&"5678"
    00417810 | 0F85 99000000 | jne xoftspy.4178AF |
    00417816 | 8B4424 20 | mov eax,dword ptr ss:[esp+20] | [esp+20]:"MOROSE"
    0041781A | B9 0A000000 | mov ecx,A | A:'\n'
    0041781F | 99 | cdq |
    00417820 | F7F9 | idiv ecx |
    00417822 | 8B4424 24 | mov eax,dword ptr ss:[esp+24] | [esp+24]:&"MOROSE"
    00417826 | BE 0A000000 | mov esi,A | esi:"x G"==&"苾A", A:'\n'
    0041782B | 8BCA | mov ecx,edx | edx:"1234-5678"
    0041782D | 99 | cdq |
    0041782E | F7FE | idiv esi | esi:"x G"==&"苾A"
    00417830 | 3BD1 | cmp edx,ecx | edx:"1234-5678"
    00417832 | 75 7B | jne xoftspy.4178AF |
    00417834 | 8D4C24 10 | lea ecx,dword ptr ss:[esp+10] | [esp+10]:&"8EG"
    00417838 | C64424 30 05 | mov byte ptr ss:[esp+30],5 |
    0041783D | E8 5E690400 | call xoftspy.45E1A0 |
    00417842 | 8D4C24 14 | lea ecx,dword ptr ss:[esp+14] |
    00417846 | C64424 30 04 | mov byte ptr ss:[esp+30],4 |
    0041784B | E8 50690400 | call xoftspy.45E1A0 |
    00417850 | 8D4C24 18 | lea ecx,dword ptr ss:[esp+18] |
    00417854 | C64424 30 03 | mov byte ptr ss:[esp+30],3 |
    00417859 | E8 42690400 | call xoftspy.45E1A0 |
    0041785E | 8D4C24 0C | lea ecx,dword ptr ss:[esp+C] | [esp+C]:"x G"==&"苾A"
    00417862 | C64424 30 02 | mov byte ptr ss:[esp+30],2 |
    00417867 | E8 34690400 | call xoftspy.45E1A0 |
    0041786C | 8D4C24 1C | lea ecx,dword ptr ss:[esp+1C] | [esp+1C]:"1234-5678"
    00417870 | C64424 30 01 | mov byte ptr ss:[esp+30],1 |
    00417875 | E8 26690400 | call xoftspy.45E1A0 |
    0041787A | 8D4C24 38 | lea ecx,dword ptr ss:[esp+38] |
    0041787E | C64424 30 00 | mov byte ptr ss:[esp+30],0 |
    00417883 | E8 18690400 | call xoftspy.45E1A0 |
    00417888 | 8D4C24 3C | lea ecx,dword ptr ss:[esp+3C] | [esp+3C]:&"8EG"
    0041788C | C74424 30 FFFFFFFF | mov dword ptr ss:[esp+30],FFFFFFFF |
    00417894 | E8 07690400 | call xoftspy.45E1A0 |
    00417899 | 5F | pop edi | edi:""==&"1234-5678"
    0041789A | 5E | pop esi | esi:"x G"==&"苾A"
    0041789B | B0 01 | mov al,1 |
    0041789D | 5B | pop ebx | ebx:&"5678"
    0041789E | 8B4C24 1C | mov ecx,dword ptr ss:[esp+1C] | [esp+1C]:"1234-5678"
    004178A2 | 64:890D 00000000 | mov dword ptr fs:[0],ecx |
    004178A9 | 83C4 28 | add esp,28 |
    004178AC | C2 0800 | ret 8 |
    004178AF | 8D4C24 10 | lea ecx,dword ptr ss:[esp+10] | [esp+10]:&"8EG"
    004178B3 | C64424 30 05 | mov byte ptr ss:[esp+30],5 |
    004178B8 | E8 E3680400 | call xoftspy.45E1A0 |
    004178BD | 8D4C24 14 | lea ecx,dword ptr ss:[esp+14] |
    004178C1 | C64424 30 04 | mov byte ptr ss:[esp+30],4 |
    004178C6 | E8 D5680400 | call xoftspy.45E1A0 |
    004178CB | 8D4C24 18 | lea ecx,dword ptr ss:[esp+18] |
    004178CF | C64424 30 03 | mov byte ptr ss:[esp+30],3 |
    004178D4 | E8 C7680400 | call xoftspy.45E1A0 |
    004178D9 | 8D4C24 0C | lea ecx,dword ptr ss:[esp+C] | [esp+C]:"x G"==&"苾A"
    004178DD | C64424 30 02 | mov byte ptr ss:[esp+30],2 |
    004178E2 | E8 B9680400 | call xoftspy.45E1A0 |
    004178E7 | 8D4C24 1C | lea ecx,dword ptr ss:[esp+1C] | [esp+1C]:"1234-5678"
    004178EB | C64424 30 01 | mov byte ptr ss:[esp+30],1 |
    004178F0 | E8 AB680400 | call xoftspy.45E1A0 |
    004178F5 | 8D4C24 38 | lea ecx,dword ptr ss:[esp+38] |
    004178F9 | C64424 30 00 | mov byte ptr ss:[esp+30],0 |
    004178FE | E8 9D680400 | call xoftspy.45E1A0 |
    00417903 | 8D4C24 3C | lea ecx,dword ptr ss:[esp+3C] | [esp+3C]:&"8EG"
    00417907 | C74424 30 FFFFFFFF | mov dword ptr ss:[esp+30],FFFFFFFF |
    0041790F | E8 8C680400 | call xoftspy.45E1A0 |
    00417914 | 8B4C24 28 | mov ecx,dword ptr ss:[esp+28] | [esp+28]:&"1234-5678"
    00417918 | 5F | pop edi | edi:""==&"1234-5678"
    00417919 | 5E | pop esi | esi:"x G"==&"苾A"
    0041791A | 32C0 | xor al,al |
    0041791C | 5B | pop ebx | ebx:&"5678"
    0041791D | 64:890D 00000000 | mov dword ptr fs:[0],ecx |
    00417924 | 83C4 28 | add esp,28 |
    00417927 | C2 0800 | ret 8 |
  • 中間過程應該是在驗證註冊的內容

  • 0041791A | 32C0 | xor al,al |最後傳入eax的值

  • 在此可以假設0041791A回傳的eax是否註冊成功

  • 0041791A | 32C0 | xor al,al |按下空白鍵

  • 將指令修改為mov al, 0x1,按下確定

  • 修改後如下

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    // 修改前
    0041791A | 32C0 | xor al,al |
    // 修改後
    0041791A | 32C0 | mov al,1 |
  • F9執行程式

  • 彈出視窗Congratulations! successfully registered

  • 點擊確定

  • F9執行程式

  • 回到程式About

  • Enter Registration Code按鈕尚未消失

  • 發現程式並沒有真正破解

  • 可以假設有其他驗證位置沒有找到(重複驗證,心跳驗證)


  • About裡面有This XoftSpy license has not been registered提示 (此XoftSpy許可證尚未註冊)

  • 移除所有中斷點

  • 於反匯編視窗點選右鍵選擇搜尋(S)->目前模組->字串引用(S)

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    位址       反組譯                                         字串                                                                                                                                                                                                                                                                                                                                                                                    
    00401070 mov eax,xoftspy.4706B0 "PQH"==&"CAboutPage"
    004010C5 mov dword ptr ds:[esi+C4],xoftspy.475150 &"落NG"
    004011AA mov dword ptr ds:[ecx],xoftspy.475160 "~[F"==&"貉NG"
    0040120A mov dword ptr ds:[ecx],xoftspy.475160 "~[F"==&"貉NG"
    004012F2 mov dword ptr ds:[ecx],xoftspy.475160 "~[F"==&"貉NG"
    004013D0 mov eax,xoftspy.4706C8 &"8EG"
    00401424 mov dword ptr ss:[esp+14],xoftspy.475150 &"落NG"
    0040149B push xoftspy.4851C4 "This license of XoftSpy has been registered"
    004014AD push xoftspy.485194 "This XoftSpy license has not been registered"
    00401555 mov dword ptr ss:[esp+14],xoftspy.475160 "~[F"==&"貉NG"
    00401630 push xoftspy.48524C "Arial"
    00401662 push xoftspy.48524C "Arial"
    00401682 push xoftspy.48524C "Arial"
    004016F9 push xoftspy.48521C "This version of XoftSpy is Registered to %s."
    0040174E push xoftspy.4851F0 "This version of XoftSpy is Un-Registered."
  • 點擊This license of XoftSpy has been registered (XoftSpy的許可證已經註冊)

  • 到達0040149B位址,觀察指令

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    00401492   | E8 093C0300           | call xoftspy.4350A0                      |
    00401497 | 84C0 | test al,al |
    00401499 | 74 12 | je xoftspy.4014AD |
    0040149B | 68 C4514800 | push xoftspy.4851C4 | 4851C4:"This license of XoftSpy has been registered"
    004014A0 | 8D4C24 08 | lea ecx,dword ptr ss:[esp+8] |
    004014A4 | E8 34CE0500 | call xoftspy.45E2DD |
    004014A9 | 6A 00 | push 0 |
    004014AB | EB 10 | jmp xoftspy.4014BD |
    004014AD | 68 94514800 | push xoftspy.485194 | 485194:"This XoftSpy license has not been registered"
    004014B2 | 8D4C24 08 | lea ecx,dword ptr ss:[esp+8] |
    004014B6 | E8 22CE0500 | call xoftspy.45E2DD |
  • 00401499設定中斷點

  • 點擊Registration Code

  • 輸入Enter UsernameEnter Registration Code

  • 點擊OK

  • 斷點在00401499 | 74 12 | je xoftspy.4014AD |跳轉已實現

  • je跳轉實現為ZF=1,我們將其修改為ZF=0

  • F9執行程式

  • 發現會一直斷點在00401499 | 74 12 | je xoftspy.4014AD |跳轉已實現

  • 假設00401499為重複驗證

  • 00401499按右鍵選擇二進位->用 NOP 填充 (Ctrl + 9)

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    // 修改前
    00401499 | 74 12 | je xoftspy.4014AD |
    // 修改後
    00401499 | 90 | nop |
    0040149A | 90 | nop |
  • 移除所有中斷點

  • F9執行程式

  • 回到程式About

  • Enter Registration Code按鈕消失了

  • 恭喜程式真正被破解


分析總結

  • 00401499為重複驗證位址

修改思路

根據分析總結

  • 00401499使用 NOP 填充

實際修改

  • 開啟XoftSpy.exe

  • 反匯編視窗中按下Ctrl + G輸入00401499,會跳轉到00401499位址

  • 00401499按右鍵選擇二進位->用 NOP 填充 (Ctrl + 9)

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    // 修改前
    00401499 | 74 12 | je xoftspy.4014AD |
    // 修改後
    00401499 | 90 | nop |
    0040149A | 90 | nop |
  • 點擊修補程式 或是快捷鍵Ctrl + P

  • 點擊修補檔案(P)

  • 另存檔名XoftSpy.crack.exe

  • 恭喜補丁產生XoftSpy.crack.exe

註:開啟新的補丁.exe不要忘記設定相容性和管理員執行。


註:以上參考了
x64dbg
x64dbg’s documentation!
CSDN billvsme的专栏OllyDbg 使用笔记 (十二)
CSDN 残烛之泪的专栏逆向常用API函數