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902 lines
15 KiB
902 lines
15 KiB
TITLE bf-586.asm
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IF @Version LT 800
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ECHO MASM version 8.00 or later is strongly recommended.
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ENDIF
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.686
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.MODEL FLAT
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OPTION DOTNAME
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IF @Version LT 800
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.text$ SEGMENT PAGE 'CODE'
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ELSE
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.text$ SEGMENT ALIGN(64) 'CODE'
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ENDIF
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ALIGN 16
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_BF_encrypt PROC PUBLIC
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$L_BF_encrypt_begin::
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;
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push ebp
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push ebx
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mov ebx,DWORD PTR 12[esp]
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mov ebp,DWORD PTR 16[esp]
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push esi
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push edi
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; Load the 2 words
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mov edi,DWORD PTR [ebx]
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mov esi,DWORD PTR 4[ebx]
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xor eax,eax
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mov ebx,DWORD PTR [ebp]
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xor ecx,ecx
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xor edi,ebx
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;
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; Round 0
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mov edx,DWORD PTR 4[ebp]
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mov ebx,edi
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xor esi,edx
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shr ebx,16
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mov edx,edi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor esi,ebx
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;
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; Round 1
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mov edx,DWORD PTR 8[ebp]
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mov ebx,esi
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xor edi,edx
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shr ebx,16
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mov edx,esi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor edi,ebx
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;
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; Round 2
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mov edx,DWORD PTR 12[ebp]
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mov ebx,edi
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xor esi,edx
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shr ebx,16
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mov edx,edi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor esi,ebx
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;
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; Round 3
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mov edx,DWORD PTR 16[ebp]
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mov ebx,esi
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xor edi,edx
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shr ebx,16
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mov edx,esi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor edi,ebx
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;
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; Round 4
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mov edx,DWORD PTR 20[ebp]
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mov ebx,edi
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xor esi,edx
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shr ebx,16
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mov edx,edi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor esi,ebx
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;
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; Round 5
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mov edx,DWORD PTR 24[ebp]
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mov ebx,esi
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xor edi,edx
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shr ebx,16
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mov edx,esi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor edi,ebx
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;
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; Round 6
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mov edx,DWORD PTR 28[ebp]
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mov ebx,edi
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xor esi,edx
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shr ebx,16
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mov edx,edi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor esi,ebx
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;
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; Round 7
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mov edx,DWORD PTR 32[ebp]
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mov ebx,esi
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xor edi,edx
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shr ebx,16
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mov edx,esi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor edi,ebx
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;
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; Round 8
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mov edx,DWORD PTR 36[ebp]
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mov ebx,edi
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xor esi,edx
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shr ebx,16
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mov edx,edi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor esi,ebx
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;
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; Round 9
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mov edx,DWORD PTR 40[ebp]
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mov ebx,esi
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xor edi,edx
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shr ebx,16
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mov edx,esi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor edi,ebx
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;
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; Round 10
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mov edx,DWORD PTR 44[ebp]
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mov ebx,edi
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xor esi,edx
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shr ebx,16
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mov edx,edi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor esi,ebx
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;
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; Round 11
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mov edx,DWORD PTR 48[ebp]
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mov ebx,esi
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xor edi,edx
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shr ebx,16
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mov edx,esi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor edi,ebx
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;
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; Round 12
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mov edx,DWORD PTR 52[ebp]
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mov ebx,edi
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xor esi,edx
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shr ebx,16
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mov edx,edi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor esi,ebx
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;
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; Round 13
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mov edx,DWORD PTR 56[ebp]
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mov ebx,esi
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xor edi,edx
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shr ebx,16
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mov edx,esi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor edi,ebx
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;
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; Round 14
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mov edx,DWORD PTR 60[ebp]
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mov ebx,edi
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xor esi,edx
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shr ebx,16
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mov edx,edi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor esi,ebx
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;
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; Round 15
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mov edx,DWORD PTR 64[ebp]
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mov ebx,esi
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xor edi,edx
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shr ebx,16
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mov edx,esi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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; Load parameter 0 (16) enc=1
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mov eax,DWORD PTR 20[esp]
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xor edi,ebx
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mov edx,DWORD PTR 68[ebp]
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xor esi,edx
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mov DWORD PTR 4[eax],edi
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mov DWORD PTR [eax],esi
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pop edi
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pop esi
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pop ebx
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pop ebp
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ret
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_BF_encrypt ENDP
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ALIGN 16
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_BF_decrypt PROC PUBLIC
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$L_BF_decrypt_begin::
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;
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push ebp
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push ebx
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mov ebx,DWORD PTR 12[esp]
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mov ebp,DWORD PTR 16[esp]
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push esi
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push edi
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; Load the 2 words
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mov edi,DWORD PTR [ebx]
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mov esi,DWORD PTR 4[ebx]
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xor eax,eax
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mov ebx,DWORD PTR 68[ebp]
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xor ecx,ecx
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xor edi,ebx
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;
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; Round 16
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mov edx,DWORD PTR 64[ebp]
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mov ebx,edi
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xor esi,edx
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shr ebx,16
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mov edx,edi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor esi,ebx
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;
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; Round 15
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mov edx,DWORD PTR 60[ebp]
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mov ebx,esi
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xor edi,edx
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shr ebx,16
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mov edx,esi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor edi,ebx
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;
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; Round 14
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mov edx,DWORD PTR 56[ebp]
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mov ebx,edi
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xor esi,edx
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shr ebx,16
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mov edx,edi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor esi,ebx
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;
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; Round 13
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mov edx,DWORD PTR 52[ebp]
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mov ebx,esi
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xor edi,edx
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shr ebx,16
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mov edx,esi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor edi,ebx
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;
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; Round 12
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mov edx,DWORD PTR 48[ebp]
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mov ebx,edi
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xor esi,edx
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shr ebx,16
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mov edx,edi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor esi,ebx
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;
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; Round 11
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mov edx,DWORD PTR 44[ebp]
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mov ebx,esi
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xor edi,edx
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shr ebx,16
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mov edx,esi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
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xor edi,ebx
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;
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; Round 10
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mov edx,DWORD PTR 40[ebp]
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mov ebx,edi
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xor esi,edx
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shr ebx,16
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mov edx,edi
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mov al,bh
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and ebx,255
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mov cl,dh
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and edx,255
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mov eax,DWORD PTR 72[eax*4+ebp]
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mov ebx,DWORD PTR 1096[ebx*4+ebp]
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add ebx,eax
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mov eax,DWORD PTR 2120[ecx*4+ebp]
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xor ebx,eax
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mov edx,DWORD PTR 3144[edx*4+ebp]
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add ebx,edx
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xor eax,eax
|
|
xor esi,ebx
|
|
;
|
|
; Round 9
|
|
mov edx,DWORD PTR 36[ebp]
|
|
mov ebx,esi
|
|
xor edi,edx
|
|
shr ebx,16
|
|
mov edx,esi
|
|
mov al,bh
|
|
and ebx,255
|
|
mov cl,dh
|
|
and edx,255
|
|
mov eax,DWORD PTR 72[eax*4+ebp]
|
|
mov ebx,DWORD PTR 1096[ebx*4+ebp]
|
|
add ebx,eax
|
|
mov eax,DWORD PTR 2120[ecx*4+ebp]
|
|
xor ebx,eax
|
|
mov edx,DWORD PTR 3144[edx*4+ebp]
|
|
add ebx,edx
|
|
xor eax,eax
|
|
xor edi,ebx
|
|
;
|
|
; Round 8
|
|
mov edx,DWORD PTR 32[ebp]
|
|
mov ebx,edi
|
|
xor esi,edx
|
|
shr ebx,16
|
|
mov edx,edi
|
|
mov al,bh
|
|
and ebx,255
|
|
mov cl,dh
|
|
and edx,255
|
|
mov eax,DWORD PTR 72[eax*4+ebp]
|
|
mov ebx,DWORD PTR 1096[ebx*4+ebp]
|
|
add ebx,eax
|
|
mov eax,DWORD PTR 2120[ecx*4+ebp]
|
|
xor ebx,eax
|
|
mov edx,DWORD PTR 3144[edx*4+ebp]
|
|
add ebx,edx
|
|
xor eax,eax
|
|
xor esi,ebx
|
|
;
|
|
; Round 7
|
|
mov edx,DWORD PTR 28[ebp]
|
|
mov ebx,esi
|
|
xor edi,edx
|
|
shr ebx,16
|
|
mov edx,esi
|
|
mov al,bh
|
|
and ebx,255
|
|
mov cl,dh
|
|
and edx,255
|
|
mov eax,DWORD PTR 72[eax*4+ebp]
|
|
mov ebx,DWORD PTR 1096[ebx*4+ebp]
|
|
add ebx,eax
|
|
mov eax,DWORD PTR 2120[ecx*4+ebp]
|
|
xor ebx,eax
|
|
mov edx,DWORD PTR 3144[edx*4+ebp]
|
|
add ebx,edx
|
|
xor eax,eax
|
|
xor edi,ebx
|
|
;
|
|
; Round 6
|
|
mov edx,DWORD PTR 24[ebp]
|
|
mov ebx,edi
|
|
xor esi,edx
|
|
shr ebx,16
|
|
mov edx,edi
|
|
mov al,bh
|
|
and ebx,255
|
|
mov cl,dh
|
|
and edx,255
|
|
mov eax,DWORD PTR 72[eax*4+ebp]
|
|
mov ebx,DWORD PTR 1096[ebx*4+ebp]
|
|
add ebx,eax
|
|
mov eax,DWORD PTR 2120[ecx*4+ebp]
|
|
xor ebx,eax
|
|
mov edx,DWORD PTR 3144[edx*4+ebp]
|
|
add ebx,edx
|
|
xor eax,eax
|
|
xor esi,ebx
|
|
;
|
|
; Round 5
|
|
mov edx,DWORD PTR 20[ebp]
|
|
mov ebx,esi
|
|
xor edi,edx
|
|
shr ebx,16
|
|
mov edx,esi
|
|
mov al,bh
|
|
and ebx,255
|
|
mov cl,dh
|
|
and edx,255
|
|
mov eax,DWORD PTR 72[eax*4+ebp]
|
|
mov ebx,DWORD PTR 1096[ebx*4+ebp]
|
|
add ebx,eax
|
|
mov eax,DWORD PTR 2120[ecx*4+ebp]
|
|
xor ebx,eax
|
|
mov edx,DWORD PTR 3144[edx*4+ebp]
|
|
add ebx,edx
|
|
xor eax,eax
|
|
xor edi,ebx
|
|
;
|
|
; Round 4
|
|
mov edx,DWORD PTR 16[ebp]
|
|
mov ebx,edi
|
|
xor esi,edx
|
|
shr ebx,16
|
|
mov edx,edi
|
|
mov al,bh
|
|
and ebx,255
|
|
mov cl,dh
|
|
and edx,255
|
|
mov eax,DWORD PTR 72[eax*4+ebp]
|
|
mov ebx,DWORD PTR 1096[ebx*4+ebp]
|
|
add ebx,eax
|
|
mov eax,DWORD PTR 2120[ecx*4+ebp]
|
|
xor ebx,eax
|
|
mov edx,DWORD PTR 3144[edx*4+ebp]
|
|
add ebx,edx
|
|
xor eax,eax
|
|
xor esi,ebx
|
|
;
|
|
; Round 3
|
|
mov edx,DWORD PTR 12[ebp]
|
|
mov ebx,esi
|
|
xor edi,edx
|
|
shr ebx,16
|
|
mov edx,esi
|
|
mov al,bh
|
|
and ebx,255
|
|
mov cl,dh
|
|
and edx,255
|
|
mov eax,DWORD PTR 72[eax*4+ebp]
|
|
mov ebx,DWORD PTR 1096[ebx*4+ebp]
|
|
add ebx,eax
|
|
mov eax,DWORD PTR 2120[ecx*4+ebp]
|
|
xor ebx,eax
|
|
mov edx,DWORD PTR 3144[edx*4+ebp]
|
|
add ebx,edx
|
|
xor eax,eax
|
|
xor edi,ebx
|
|
;
|
|
; Round 2
|
|
mov edx,DWORD PTR 8[ebp]
|
|
mov ebx,edi
|
|
xor esi,edx
|
|
shr ebx,16
|
|
mov edx,edi
|
|
mov al,bh
|
|
and ebx,255
|
|
mov cl,dh
|
|
and edx,255
|
|
mov eax,DWORD PTR 72[eax*4+ebp]
|
|
mov ebx,DWORD PTR 1096[ebx*4+ebp]
|
|
add ebx,eax
|
|
mov eax,DWORD PTR 2120[ecx*4+ebp]
|
|
xor ebx,eax
|
|
mov edx,DWORD PTR 3144[edx*4+ebp]
|
|
add ebx,edx
|
|
xor eax,eax
|
|
xor esi,ebx
|
|
;
|
|
; Round 1
|
|
mov edx,DWORD PTR 4[ebp]
|
|
mov ebx,esi
|
|
xor edi,edx
|
|
shr ebx,16
|
|
mov edx,esi
|
|
mov al,bh
|
|
and ebx,255
|
|
mov cl,dh
|
|
and edx,255
|
|
mov eax,DWORD PTR 72[eax*4+ebp]
|
|
mov ebx,DWORD PTR 1096[ebx*4+ebp]
|
|
add ebx,eax
|
|
mov eax,DWORD PTR 2120[ecx*4+ebp]
|
|
xor ebx,eax
|
|
mov edx,DWORD PTR 3144[edx*4+ebp]
|
|
add ebx,edx
|
|
; Load parameter 0 (1) enc=0
|
|
mov eax,DWORD PTR 20[esp]
|
|
xor edi,ebx
|
|
mov edx,DWORD PTR [ebp]
|
|
xor esi,edx
|
|
mov DWORD PTR 4[eax],edi
|
|
mov DWORD PTR [eax],esi
|
|
pop edi
|
|
pop esi
|
|
pop ebx
|
|
pop ebp
|
|
ret
|
|
_BF_decrypt ENDP
|
|
ALIGN 16
|
|
_BF_cbc_encrypt PROC PUBLIC
|
|
$L_BF_cbc_encrypt_begin::
|
|
;
|
|
push ebp
|
|
push ebx
|
|
push esi
|
|
push edi
|
|
mov ebp,DWORD PTR 28[esp]
|
|
; getting iv ptr from parameter 4
|
|
mov ebx,DWORD PTR 36[esp]
|
|
mov esi,DWORD PTR [ebx]
|
|
mov edi,DWORD PTR 4[ebx]
|
|
push edi
|
|
push esi
|
|
push edi
|
|
push esi
|
|
mov ebx,esp
|
|
mov esi,DWORD PTR 36[esp]
|
|
mov edi,DWORD PTR 40[esp]
|
|
; getting encrypt flag from parameter 5
|
|
mov ecx,DWORD PTR 56[esp]
|
|
; get and push parameter 3
|
|
mov eax,DWORD PTR 48[esp]
|
|
push eax
|
|
push ebx
|
|
cmp ecx,0
|
|
jz $L000decrypt
|
|
and ebp,4294967288
|
|
mov eax,DWORD PTR 8[esp]
|
|
mov ebx,DWORD PTR 12[esp]
|
|
jz $L001encrypt_finish
|
|
$L002encrypt_loop:
|
|
mov ecx,DWORD PTR [esi]
|
|
mov edx,DWORD PTR 4[esi]
|
|
xor eax,ecx
|
|
xor ebx,edx
|
|
bswap eax
|
|
bswap ebx
|
|
mov DWORD PTR 8[esp],eax
|
|
mov DWORD PTR 12[esp],ebx
|
|
call $L_BF_encrypt_begin
|
|
mov eax,DWORD PTR 8[esp]
|
|
mov ebx,DWORD PTR 12[esp]
|
|
bswap eax
|
|
bswap ebx
|
|
mov DWORD PTR [edi],eax
|
|
mov DWORD PTR 4[edi],ebx
|
|
add esi,8
|
|
add edi,8
|
|
sub ebp,8
|
|
jnz $L002encrypt_loop
|
|
$L001encrypt_finish:
|
|
mov ebp,DWORD PTR 52[esp]
|
|
and ebp,7
|
|
jz $L003finish
|
|
call $L004PIC_point
|
|
$L004PIC_point:
|
|
pop edx
|
|
lea ecx,DWORD PTR ($L005cbc_enc_jmp_table-$L004PIC_point)[edx]
|
|
mov ebp,DWORD PTR [ebp*4+ecx]
|
|
add ebp,edx
|
|
xor ecx,ecx
|
|
xor edx,edx
|
|
jmp ebp
|
|
$L006ej7:
|
|
mov dh,BYTE PTR 6[esi]
|
|
shl edx,8
|
|
$L007ej6:
|
|
mov dh,BYTE PTR 5[esi]
|
|
$L008ej5:
|
|
mov dl,BYTE PTR 4[esi]
|
|
$L009ej4:
|
|
mov ecx,DWORD PTR [esi]
|
|
jmp $L010ejend
|
|
$L011ej3:
|
|
mov ch,BYTE PTR 2[esi]
|
|
shl ecx,8
|
|
$L012ej2:
|
|
mov ch,BYTE PTR 1[esi]
|
|
$L013ej1:
|
|
mov cl,BYTE PTR [esi]
|
|
$L010ejend:
|
|
xor eax,ecx
|
|
xor ebx,edx
|
|
bswap eax
|
|
bswap ebx
|
|
mov DWORD PTR 8[esp],eax
|
|
mov DWORD PTR 12[esp],ebx
|
|
call $L_BF_encrypt_begin
|
|
mov eax,DWORD PTR 8[esp]
|
|
mov ebx,DWORD PTR 12[esp]
|
|
bswap eax
|
|
bswap ebx
|
|
mov DWORD PTR [edi],eax
|
|
mov DWORD PTR 4[edi],ebx
|
|
jmp $L003finish
|
|
$L000decrypt:
|
|
and ebp,4294967288
|
|
mov eax,DWORD PTR 16[esp]
|
|
mov ebx,DWORD PTR 20[esp]
|
|
jz $L014decrypt_finish
|
|
$L015decrypt_loop:
|
|
mov eax,DWORD PTR [esi]
|
|
mov ebx,DWORD PTR 4[esi]
|
|
bswap eax
|
|
bswap ebx
|
|
mov DWORD PTR 8[esp],eax
|
|
mov DWORD PTR 12[esp],ebx
|
|
call $L_BF_decrypt_begin
|
|
mov eax,DWORD PTR 8[esp]
|
|
mov ebx,DWORD PTR 12[esp]
|
|
bswap eax
|
|
bswap ebx
|
|
mov ecx,DWORD PTR 16[esp]
|
|
mov edx,DWORD PTR 20[esp]
|
|
xor ecx,eax
|
|
xor edx,ebx
|
|
mov eax,DWORD PTR [esi]
|
|
mov ebx,DWORD PTR 4[esi]
|
|
mov DWORD PTR [edi],ecx
|
|
mov DWORD PTR 4[edi],edx
|
|
mov DWORD PTR 16[esp],eax
|
|
mov DWORD PTR 20[esp],ebx
|
|
add esi,8
|
|
add edi,8
|
|
sub ebp,8
|
|
jnz $L015decrypt_loop
|
|
$L014decrypt_finish:
|
|
mov ebp,DWORD PTR 52[esp]
|
|
and ebp,7
|
|
jz $L003finish
|
|
mov eax,DWORD PTR [esi]
|
|
mov ebx,DWORD PTR 4[esi]
|
|
bswap eax
|
|
bswap ebx
|
|
mov DWORD PTR 8[esp],eax
|
|
mov DWORD PTR 12[esp],ebx
|
|
call $L_BF_decrypt_begin
|
|
mov eax,DWORD PTR 8[esp]
|
|
mov ebx,DWORD PTR 12[esp]
|
|
bswap eax
|
|
bswap ebx
|
|
mov ecx,DWORD PTR 16[esp]
|
|
mov edx,DWORD PTR 20[esp]
|
|
xor ecx,eax
|
|
xor edx,ebx
|
|
mov eax,DWORD PTR [esi]
|
|
mov ebx,DWORD PTR 4[esi]
|
|
$L016dj7:
|
|
ror edx,16
|
|
mov BYTE PTR 6[edi],dl
|
|
shr edx,16
|
|
$L017dj6:
|
|
mov BYTE PTR 5[edi],dh
|
|
$L018dj5:
|
|
mov BYTE PTR 4[edi],dl
|
|
$L019dj4:
|
|
mov DWORD PTR [edi],ecx
|
|
jmp $L020djend
|
|
$L021dj3:
|
|
ror ecx,16
|
|
mov BYTE PTR 2[edi],cl
|
|
shl ecx,16
|
|
$L022dj2:
|
|
mov BYTE PTR 1[esi],ch
|
|
$L023dj1:
|
|
mov BYTE PTR [esi],cl
|
|
$L020djend:
|
|
jmp $L003finish
|
|
$L003finish:
|
|
mov ecx,DWORD PTR 60[esp]
|
|
add esp,24
|
|
mov DWORD PTR [ecx],eax
|
|
mov DWORD PTR 4[ecx],ebx
|
|
pop edi
|
|
pop esi
|
|
pop ebx
|
|
pop ebp
|
|
ret
|
|
ALIGN 64
|
|
$L005cbc_enc_jmp_table:
|
|
DD 0
|
|
DD $L013ej1-$L004PIC_point
|
|
DD $L012ej2-$L004PIC_point
|
|
DD $L011ej3-$L004PIC_point
|
|
DD $L009ej4-$L004PIC_point
|
|
DD $L008ej5-$L004PIC_point
|
|
DD $L007ej6-$L004PIC_point
|
|
DD $L006ej7-$L004PIC_point
|
|
ALIGN 64
|
|
_BF_cbc_encrypt ENDP
|
|
.text$ ENDS
|
|
END
|
|
|