b-win32.asm

openssl是ssl的开源项目

	add	ebx,		edx
	xor	eax,		eax
	xor	edi,		ebx
	; 
	; Round 12
	mov	edx,		DWORD PTR 48[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 11
	mov	edx,		DWORD PTR 44[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 10
	mov	edx,		DWORD PTR 40[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 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
_TEXT	ENDS
_TEXT	SEGMENT
PUBLIC	_BF_cbc_encrypt

_BF_cbc_encrypt PROC NEAR
	; 
	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	_BF_encrypt
	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
	xor	ecx,		ecx
	xor	edx,		edx
	mov	ebp,		DWORD PTR $L004cbc_enc_jmp_table[ebp*4]
	jmp	 ebp
L005ej7:
	mov	dh,		BYTE PTR 6[esi]
	shl	edx,		8
L006ej6:
	mov	dh,		BYTE PTR 5[esi]
L007ej5:
	mov	dl,		BYTE PTR 4[esi]
L008ej4:
	mov	ecx,		DWORD PTR [esi]
	jmp	$L009ejend
L010ej3:
	mov	ch,		BYTE PTR 2[esi]
	shl	ecx,		8
L011ej2:
	mov	ch,		BYTE PTR 1[esi]
L012ej1:
	mov	cl,		BYTE PTR [esi]
$L009ejend:
	xor	eax,		ecx
	xor	ebx,		edx
	bswap	eax
	bswap	ebx
	mov	DWORD PTR 8[esp],eax
	mov	DWORD PTR 12[esp],ebx
	call	_BF_encrypt
	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	$L013decrypt_finish
L014decrypt_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	_BF_decrypt
	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	L014decrypt_loop
$L013decrypt_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	_BF_decrypt
	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]
L015dj7:
	ror	edx,		16
	mov	BYTE PTR 6[edi],dl
	shr	edx,		16
L016dj6:
	mov	BYTE PTR 5[edi],dh
L017dj5:
	mov	BYTE PTR 4[edi],dl
L018dj4:
	mov	DWORD PTR [edi],ecx
	jmp	$L019djend
L020dj3:
	ror	ecx,		16
	mov	BYTE PTR 2[edi],cl
	shl	ecx,		16
L021dj2:
	mov	BYTE PTR 1[esi],ch
L022dj1:
	mov	BYTE PTR [esi],	cl
$L019djend:
	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
$L004cbc_enc_jmp_table:
	DD	0
	DD	L012ej1
	DD	L011ej2
	DD	L010ej3
	DD	L008ej4
	DD	L007ej5
	DD	L006ej6
	DD	L005ej7
L023cbc_dec_jmp_table:
	DD	0
	DD	L022dj1
	DD	L021dj2
	DD	L020dj3
	DD	L018dj4
	DD	L017dj5
	DD	L016dj6
	DD	L015dj7
_BF_cbc_encrypt ENDP
_TEXT	ENDS
END