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[原创]21题分析
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发表于: 2016-12-12 16:18 2560
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全是花指令,不多说了,只说一下重点吧
00403A29 8B1D E8404800 mov ebx, dword ptr [4840E8] ; 真正的注册码存在这里
00403A2F 33C0 xor eax, eax
00403A31 833B 00 cmp dword ptr [ebx], 0
00403A34 7E 03 jle short 00403A39
00403A36 8B43 04 mov eax, dword ptr [ebx+4]
00403A39 8945 F4 mov dword ptr [ebp-C], eax
00403A3C EB 01 jmp short 00403A3F
00403A3E 0FEB01 por mm0, qword ptr [ecx]
00403A41 8BDB mov ebx, ebx
00403A43 45 inc ebp
00403A44 F4 hlt
00403A45 DD5D EC fstp qword ptr [ebp-14]
00403A48 DD45 EC fld qword ptr [ebp-14]
00403A4B DB45 FC fild dword ptr [ebp-4]
00403A4E DD5D E4 fstp qword ptr [ebp-1C]
00403A51 DC65 E4 fsub qword ptr [ebp-1C]
00403A54 DD5D DC fstp qword ptr [ebp-24]
00403A57 F8 clc
00403A58 73 01 jnb short 00403A5B
00403A5A ^ 78 E8 js short 00403A44
00403A29 8B1D E8404800 mov ebx, dword ptr [4840E8] ; 真正的注册码存在这里
00403A2F 33C0 xor eax, eax
00403A31 833B 00 cmp dword ptr [ebx], 0
00403A34 7E 03 jle short 00403A39
00403A36 8B43 04 mov eax, dword ptr [ebx+4]
00403A39 8945 F4 mov dword ptr [ebp-C], eax
00403A3C EB 01 jmp short 00403A3F
00403A3E 0FEB01 por mm0, qword ptr [ecx]
00403A41 8BDB mov ebx, ebx
00403A43 45 inc ebp
00403A44 F4 hlt
00403A45 DD5D EC fstp qword ptr [ebp-14]
00403A48 DD45 EC fld qword ptr [ebp-14]
00403A4B DB45 FC fild dword ptr [ebp-4]
00403A4E DD5D E4 fstp qword ptr [ebp-1C]
00403A51 DC65 E4 fsub qword ptr [ebp-1C]
00403A54 DD5D DC fstp qword ptr [ebp-24]
00403A57 F8 clc
00403A58 73 01 jnb short 00403A5B
00403A5A ^ 78 E8 js short 00403A44
[招生]科锐逆向工程师培训(2024年11月15日实地,远程教学同时开班, 第51期)
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