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为了奖品 我也来浑水摸鱼 新人来学习. 不废话,载入OD ,看流程。事先说明该软件是重启验证. VB 无壳
- 00422455 /0F85 24010000 jnz 完美PDF?0042257F ; 关键跳 NOP爆破即可
- 0042245B |8B15 24604200 mov edx,dword ptr ds:[0x426024]
- 00422461 |52 push edx
- 00422462 |68 E8D04100 push 完美PDF?0041D0E8
- 00422467 |FF15 34104000 call dword ptr ds:[<&MSVBVM60.__vbaStrCa>; msvbvm60.__vbaStrCat
- 0042246D |8BD0 mov edx,eax
- 0042246F |8D4D E4 lea ecx,dword ptr ss:[ebp-0x1C]
- 00422472 |FFD7 call edi
- 00422474 |50 push eax
- 00422475 |A1 28604200 mov eax,dword ptr ds:[0x426028]
- 0042247A |50 push eax
- 0042247B |FF15 34104000 call dword ptr ds:[<&MSVBVM60.__vbaStrCa>; msvbvm60.__vbaStrCat
- 00422481 |8BD0 mov edx,eax
- 00422483 |8D4D E0 lea ecx,dword ptr ss:[ebp-0x20]
- 00422486 |FFD7 call edi
- 00422488 |50 push eax
- 00422489 |56 push esi
- 0042248A |FF53 54 call dword ptr ds:[ebx+0x54]
- 0042248D |85C0 test eax,eax
- 0042248F |DBE2 fclex
- 00422491 |7D 0F jge short 完美PDF?004224A2
- 00422493 |6A 54 push 0x54
- 00422495 |68 ECBF4100 push 完美PDF?0041BFEC
- 0042249A |56 push esi
- 0042249B |50 push eax
- 0042249C |FF15 40104000 call dword ptr ds:[<&MSVBVM60.__vbaHresu>; msvbvm60.__vbaHresultCheckObj
- 004224A2 |8D4D E0 lea ecx,dword ptr ss:[ebp-0x20]
- 004224A5 |8D55 E4 lea edx,dword ptr ss:[ebp-0x1C]
- 004224A8 |51 push ecx
- 004224A9 |52 push edx
- 004224AA |6A 02 push 0x2
- 004224AC |FF15 1C114000 call dword ptr ds:[<&MSVBVM60.__vbaFreeS>; msvbvm60.__vbaFreeStrList
- 004224B2 |8B06 mov eax,dword ptr ds:[esi]
- 004224B4 |83C4 0C add esp,0xC
- 004224B7 |56 push esi
- 004224B8 |FF90 38030000 call dword ptr ds:[eax+0x338]
- 004224BE |8B1D 54104000 mov ebx,dword ptr ds:[<&MSVBVM60.__vbaOb>; msvbvm60.__vbaObjSet
- 004224C4 |8D4D D4 lea ecx,dword ptr ss:[ebp-0x2C]
- 004224C7 |50 push eax
- 004224C8 |51 push ecx
- 004224C9 |FFD3 call ebx
- 004224CB |8BF8 mov edi,eax
- 004224CD |6A 00 push 0x0
- 004224CF |57 push edi
- 004224D0 |8B17 mov edx,dword ptr ds:[edi]
- 004224D2 |FF92 9C000000 call dword ptr ds:[edx+0x9C]
- 004224D8 |85C0 test eax,eax
- 004224DA |DBE2 fclex
- 004224DC |7D 12 jge short 完美PDF?004224F0
- 004224DE |68 9C000000 push 0x9C
- 004224E3 |68 ECD04100 push 完美PDF?0041D0EC
- 004224E8 |57 push edi
- 004224E9 |50 push eax
- 004224EA |FF15 40104000 call dword ptr ds:[<&MSVBVM60.__vbaHresu>; msvbvm60.__vbaHresultCheckObj
- 004224F0 |8B3D 84114000 mov edi,dword ptr ds:[<&MSVBVM60.__vbaFr>; msvbvm60.__vbaFreeObj
- 004224F6 |8D4D D4 lea ecx,dword ptr ss:[ebp-0x2C]
- 004224F9 |FFD7 call edi
- 004224FB |8B06 mov eax,dword ptr ds:[esi]
- 004224FD |56 push esi
- 004224FE |FF90 0C030000 call dword ptr ds:[eax+0x30C]
- 00422504 |8D4D D4 lea ecx,dword ptr ss:[ebp-0x2C]
- 00422507 |50 push eax
- 00422508 |51 push ecx
- 00422509 |FFD3 call ebx
- 0042250B |8B10 mov edx,dword ptr ds:[eax]
- 0042250D |6A 00 push 0x0
- 0042250F |50 push eax
- 00422510 |8945 B0 mov dword ptr ss:[ebp-0x50],eax
- 00422513 |FF92 94000000 call dword ptr ds:[edx+0x94]
- 00422519 |85C0 test eax,eax
- 0042251B |DBE2 fclex
- 0042251D |7D 15 jge short 完美PDF?00422534
- 0042251F |8B4D B0 mov ecx,dword ptr ss:[ebp-0x50]
- 00422522 |68 94000000 push 0x94
- 00422527 |68 04C54100 push 完美PDF?0041C504
- 0042252C |51 push ecx
- 0042252D |50 push eax
- 0042252E |FF15 40104000 call dword ptr ds:[<&MSVBVM60.__vbaHresu>; msvbvm60.__vbaHresultCheckObj
- 00422534 |8D4D D4 lea ecx,dword ptr ss:[ebp-0x2C]
- 00422537 |FFD7 call edi
- 00422539 |8B16 mov edx,dword ptr ds:[esi]
- 0042253B |56 push esi
- 0042253C |FF92 08030000 call dword ptr ds:[edx+0x308]
- 00422542 |50 push eax
- 00422543 |8D45 D4 lea eax,dword ptr ss:[ebp-0x2C]
- 00422546 |50 push eax
- 00422547 |FFD3 call ebx
- 00422549 |8B08 mov ecx,dword ptr ds:[eax]
- 0042254B |6A 00 push 0x0
- 0042254D |50 push eax
- 0042254E |8945 B0 mov dword ptr ss:[ebp-0x50],eax
- 00422551 |FF91 94000000 call dword ptr ds:[ecx+0x94]
- 00422557 |85C0 test eax,eax
- 00422559 |DBE2 fclex
- 0042255B |7D 15 jge short 完美PDF?00422572
- 0042255D |8B55 B0 mov edx,dword ptr ss:[ebp-0x50]
- 00422560 |68 94000000 push 0x94
- 00422565 |68 04C54100 push 完美PDF?0041C504
- 0042256A |52 push edx
- 0042256B |50 push eax
- 0042256C |FF15 40104000 call dword ptr ds:[<&MSVBVM60.__vbaHresu>; msvbvm60.__vbaHresultCheckObj
- 00422572 |8D4D D4 lea ecx,dword ptr ss:[ebp-0x2C]
- 00422575 |FFD7 call edi
- 00422577 |8B3D 5C114000 mov edi,dword ptr ds:[<&MSVBVM60.__vbaSt>; msvbvm60.__vbaStrMove
- 0042257D |EB 77 jmp short 完美PDF?004225F6
- 0042257F \A1 24604200 mov eax,dword ptr ds:[0x426024]
- 00422584 50 push eax
- 00422585 68 E8D04100 push 完美PDF?0041D0E8
- 0042258A FF15 34104000 call dword ptr ds:[<&MSVBVM60.__vbaStrCa>; msvbvm60.__vbaStrCat
- 00422590 8BD0 mov edx,eax
- 00422592 8D4D E4 lea ecx,dword ptr ss:[ebp-0x1C]
- 00422595 FFD7 call edi
- 00422597 8B0D 28604200 mov ecx,dword ptr ds:[0x426028]
- 0042259D 50 push eax
- 0042259E 51 push ecx
- 0042259F FF15 34104000 call dword ptr ds:[<&MSVBVM60.__vbaStrCa>; msvbvm60.__vbaStrCat
- 004225A5 8BD0 mov edx,eax
- 004225A7 8D4D E0 lea ecx,dword ptr ss:[ebp-0x20]
- 004225AA FFD7 call edi
- 004225AC 50 push eax
- 004225AD 68 00D14100 push 完美PDF?0041D100 ; (未注册用户)
- 004225B2 FF15 34104000 call dword ptr ds:[<&MSVBVM60.__vbaStrCa>; msvbvm60.__vbaStrCat
- 004225B8 8BD0 mov edx,eax
- 004225BA 8D4D DC lea ecx,dword ptr ss:[ebp-0x24]
复制代码
把上面的大跳转 NOP掉之后 就可以 实现爆破 , 未注册只能转三页,经测试这样爆破是有功能的,附上 测试图
为了尊重作者,就不上成品了
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