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[旧帖] [原创]爆破Crackme.rar_364 0.00雪花
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发表于: 2016-1-14 16:02 1309
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crackme提供者:七夜
原帖:http://bbs.pediy.com/showthread.php?t=8816
工具:od,winhex
平台:winxpsp3
注册按钮响应函数:
004501D9 |. 33C0 xor eax, eax
004501DB |. 55 push ebp
004501DC |. 68 19034500 push 00450319
004501E1 |. 64:FF30 push dword ptr fs:[eax]
004501E4 |. 64:8920 mov dword ptr fs:[eax], esp
004501E7 |. C745 E0 7000000>mov dword ptr [ebp-20], 70
004501EE |. C745 E4 6500000>mov dword ptr [ebp-1C], 65
004501F5 |. C745 E8 6400000>mov dword ptr [ebp-18], 64
004501FC |. C745 EC 6900000>mov dword ptr [ebp-14], 69
00450203 |. C745 F0 7900000>mov dword ptr [ebp-10], 79
0045020A |. 8D55 DC lea edx, dword ptr [ebp-24]
0045020D |. 8B87 FC020000 mov eax, dword ptr [edi+2FC]
00450213 |. E8 04F2FDFF call 0042F41C ;取用户输入的注册码
00450218 |. 8B45 DC mov eax, dword ptr [ebp-24]
0045021B |. E8 B03EFBFF call 004040D0 ;计算输入的注册码长度
00450220 |. 83F8 0C cmp eax, 0C ;要求注册码长为12
00450223 0F94C0 sete al ;此处开始爆破
00450226 84C0 test al, al
00450228 0F84 B3000000 je 004502E1
把文件偏移0x4F623处字节0F94C0改为B00190,文件偏移0x4F628处字节0F84B3000000改为0F85A7000000即可
原帖:http://bbs.pediy.com/showthread.php?t=8816
工具:od,winhex
平台:winxpsp3
注册按钮响应函数:
004501D9 |. 33C0 xor eax, eax
004501DB |. 55 push ebp
004501DC |. 68 19034500 push 00450319
004501E1 |. 64:FF30 push dword ptr fs:[eax]
004501E4 |. 64:8920 mov dword ptr fs:[eax], esp
004501E7 |. C745 E0 7000000>mov dword ptr [ebp-20], 70
004501EE |. C745 E4 6500000>mov dword ptr [ebp-1C], 65
004501F5 |. C745 E8 6400000>mov dword ptr [ebp-18], 64
004501FC |. C745 EC 6900000>mov dword ptr [ebp-14], 69
00450203 |. C745 F0 7900000>mov dword ptr [ebp-10], 79
0045020A |. 8D55 DC lea edx, dword ptr [ebp-24]
0045020D |. 8B87 FC020000 mov eax, dword ptr [edi+2FC]
00450213 |. E8 04F2FDFF call 0042F41C ;取用户输入的注册码
00450218 |. 8B45 DC mov eax, dword ptr [ebp-24]
0045021B |. E8 B03EFBFF call 004040D0 ;计算输入的注册码长度
00450220 |. 83F8 0C cmp eax, 0C ;要求注册码长为12
00450223 0F94C0 sete al ;此处开始爆破
00450226 84C0 test al, al
00450228 0F84 B3000000 je 004502E1
把文件偏移0x4F623处字节0F94C0改为B00190,文件偏移0x4F628处字节0F84B3000000改为0F85A7000000即可
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