📄 d-win32.asm
字号:
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor edi, ebx
;
; Round 2
mov eax, DWORD PTR 16[ebp]
xor ebx, ebx
mov edx, DWORD PTR 20[ebp]
xor eax, edi
xor edx, edi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor esi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor esi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor esi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor esi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor esi, ebx
;
; Round 1
mov eax, DWORD PTR 8[ebp]
xor ebx, ebx
mov edx, DWORD PTR 12[ebp]
xor eax, esi
xor edx, esi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor edi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor edi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor edi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor edi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor edi, ebx
;
; Round 0
mov eax, DWORD PTR [ebp]
xor ebx, ebx
mov edx, DWORD PTR 4[ebp]
xor eax, edi
xor edx, edi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor esi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor esi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor esi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor esi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor esi, ebx
$L003end:
;
; Fixup
ror edi, 3
mov eax, DWORD PTR 20[esp]
ror esi, 3
mov DWORD PTR [eax],edi
mov DWORD PTR 4[eax],esi
pop ebp
pop ebx
pop edi
pop esi
ret
_des_encrypt2 ENDP
_TEXT ENDS
_TEXT SEGMENT
PUBLIC _des_encrypt3
_des_encrypt3 PROC NEAR
push ebx
mov ebx, DWORD PTR 8[esp]
push ebp
push esi
push edi
;
; Load the data words
mov edi, DWORD PTR [ebx]
mov esi, DWORD PTR 4[ebx]
;
; IP
rol edi, 4
mov edx, edi
xor edi, esi
and edi, 0f0f0f0f0h
xor edx, edi
xor esi, edi
;
rol esi, 20
mov edi, esi
xor esi, edx
and esi, 0fff0000fh
xor edi, esi
xor edx, esi
;
rol edi, 14
mov esi, edi
xor edi, edx
and edi, 033333333h
xor esi, edi
xor edx, edi
;
rol edx, 22
mov edi, edx
xor edx, esi
and edx, 003fc03fch
xor edi, edx
xor esi, edx
;
rol edi, 9
mov edx, edi
xor edi, esi
and edi, 0aaaaaaaah
xor edx, edi
xor esi, edi
;
ror edx, 3
ror esi, 2
mov DWORD PTR 4[ebx],esi
mov eax, DWORD PTR 24[esp]
mov DWORD PTR [ebx],edx
mov edi, DWORD PTR 28[esp]
mov esi, DWORD PTR 32[esp]
push 1
push eax
push ebx
call _des_encrypt2
push 0
push edi
push ebx
call _des_encrypt2
push 1
push esi
push ebx
call _des_encrypt2
mov edi, DWORD PTR [ebx]
add esp, 36
mov esi, DWORD PTR 4[ebx]
;
; FP
rol esi, 2
rol edi, 3
mov eax, edi
xor edi, esi
and edi, 0aaaaaaaah
xor eax, edi
xor esi, edi
;
rol eax, 23
mov edi, eax
xor eax, esi
and eax, 003fc03fch
xor edi, eax
xor esi, eax
;
rol edi, 10
mov eax, edi
xor edi, esi
and edi, 033333333h
xor eax, edi
xor esi, edi
;
rol esi, 18
mov edi, esi
xor esi, eax
and esi, 0fff0000fh
xor edi, esi
xor eax, esi
;
rol edi, 12
mov esi, edi
xor edi, eax
and edi, 0f0f0f0f0h
xor esi, edi
xor eax, edi
;
ror eax, 4
mov DWORD PTR [ebx],eax
mov DWORD PTR 4[ebx],esi
pop edi
pop esi
pop ebp
pop ebx
ret
_des_encrypt3 ENDP
_TEXT ENDS
_TEXT SEGMENT
PUBLIC _des_decrypt3
_des_decrypt3 PROC NEAR
push ebx
mov ebx, DWORD PTR 8[esp]
push ebp
push esi
push edi
;
; Load the data words
mov edi, DWORD PTR [ebx]
mov esi, DWORD PTR 4[ebx]
;
; IP
rol edi, 4
mov edx, edi
xor edi, esi
and edi, 0f0f0f0f0h
xor edx, edi
xor esi, edi
;
rol esi, 20
mov edi, esi
xor esi, edx
and esi, 0fff0000fh
xor edi, esi
xor edx, esi
;
rol edi, 14
mov esi, edi
xor edi, edx
and edi, 033333333h
xor esi, edi
xor edx, edi
;
rol edx, 22
mov edi, edx
xor edx, esi
and edx, 003fc03fch
xor edi, edx
xor esi, edx
;
rol edi, 9
mov edx, edi
xor edi, esi
and edi, 0aaaaaaaah
xor edx, edi
xor esi, edi
;
ror edx, 3
ror esi, 2
mov DWORD PTR 4[ebx],esi
mov esi, DWORD PTR 24[esp]
mov DWORD PTR [ebx],edx
mov edi, DWORD PTR 28[esp]
mov eax, DWORD PTR 32[esp]
push 0
push eax
push ebx
call _des_encrypt2
push 1
push edi
push ebx
call _des_encrypt2
push 0
push esi
push ebx
call _des_encrypt2
mov edi, DWORD PTR [ebx]
add esp, 36
mov esi, DWORD PTR 4[ebx]
;
; FP
rol esi, 2
rol edi, 3
mov eax, edi
xor edi, esi
and edi, 0aaaaaaaah
xor eax, edi
xor esi, edi
;
rol eax, 23
mov edi, eax
xor eax, esi
and eax, 003fc03fch
xor edi, eax
xor esi, eax
;
rol edi, 10
mov eax, edi
xor edi, esi
and edi, 033333333h
xor eax, edi
xor esi, edi
;
rol esi, 18
mov edi, esi
xor esi, eax
and esi, 0fff0000fh
xor edi, esi
xor eax, esi
;
rol edi, 12
mov esi, edi
xor edi, eax
and edi, 0f0f0f0f0h
xor esi, edi
xor eax, edi
;
ror eax, 4
mov DWORD PTR [ebx],eax
mov DWORD PTR 4[ebx],esi
pop edi
pop esi
pop ebp
pop ebx
ret
_des_decrypt3 ENDP
_TEXT ENDS
_TEXT SEGMENT
PUBLIC _des_ncbc_encrypt
_des_ncbc_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 5
push ecx
; get and push parameter 3
mov eax, DWORD PTR 52[esp]
push eax
push ebx
cmp ecx, 0
jz $L004decrypt
and ebp, 4294967288
mov eax, DWORD PTR 12[esp]
mov ebx, DWORD PTR 16[esp]
jz $L005encrypt_finish
L006encrypt_loop:
mov ecx, DWORD PTR [esi]
mov edx, DWORD PTR 4[esi]
xor eax, ecx
xor ebx, edx
mov DWORD PTR 12[esp],eax
mov DWORD PTR 16[esp],ebx
call _des_encrypt
mov eax, DWORD PTR 12[esp]
mov ebx, DWORD PTR 16[esp]
mov DWORD PTR [edi],eax
mov DWORD PTR 4[edi],ebx
add esi, 8
add edi, 8
sub ebp, 8
jnz L006encrypt_loop
$L005encrypt_finish:
mov ebp, DWORD PTR 56[esp]
and ebp, 7
jz $L007finish
xor ecx, ecx
xor edx, edx
mov ebp, DWORD PTR $L008cbc_enc_jmp_table[ebp*4]
jmp ebp
L009ej7:
mov dh, BYTE PTR 6[esi]
shl edx, 8
L010ej6:
mov dh, BYTE PTR 5[esi]
L011ej5:
mov dl, BYTE PTR 4[esi]
L012ej4:
mov ecx, DWORD PTR [esi]
jmp $L013ejend
L014ej3:
mov ch, BYTE PTR 2[esi]
shl ecx, 8
L015ej2:
mov ch, BYTE PTR 1[esi]
L016ej1:
mov cl, BYTE PTR [esi]
$L013ejend:
xor eax, ecx
xor ebx, edx
mov DWORD PTR 12[esp],eax
mov DWORD PTR 16[esp],ebx
call _des_encrypt
mov eax, DWORD PTR 12[esp]
mov ebx, DWORD PTR 16[esp]
mov DWORD PTR [edi],eax
mov DWORD PTR 4[edi],ebx
jmp $L007finish
$L004decrypt:
and ebp, 4294967288
mov eax, DWORD PTR 20[esp]
mov ebx, DWORD PTR 24[esp]
jz $L017decrypt_finish
L018decrypt_loop:
mov eax, DWORD PTR [esi]
mov ebx, DWORD PTR 4[esi]
mov DWORD PTR 12[esp],eax
mov DWORD PTR 16[esp],ebx
call _des_encrypt
mov eax, DWORD PTR 12[esp]
mov ebx, DWORD PTR 16[esp]
mov ecx, DWORD PTR 20[esp]
mov edx, DWORD PTR 24[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 20[esp],eax
mov DWORD PTR 24[esp],ebx
add esi, 8
add edi, 8
sub ebp, 8
jnz L018decrypt_loop
$L017decrypt_finish:
mov ebp, DWORD PTR 56[esp]
and ebp, 7
jz $L007finish
mov eax, DWORD PTR [esi]
mov ebx, DWORD PTR 4[esi]
mov DWORD PTR 12[esp],eax
mov DWORD PTR 16[esp],ebx
call _des_encrypt
mov eax, DWORD PTR 12[esp]
mov ebx, DWORD PTR 16[esp]
mov ecx, DWORD PTR 20[esp]
mov edx, DWORD PTR 24[esp]
xor ecx, eax
xor edx, ebx
mov eax, DWORD PTR [esi]
mov ebx, DWORD PTR 4[esi]
L019dj7:
ror edx, 16
mov BYTE PTR 6[edi],dl
shr edx, 16
L020dj6:
mov BYTE PTR 5[edi],dh
L021dj5:
mov BYTE PTR 4[edi],dl
L022dj4:
mov DWORD PTR [edi],ecx
jmp $L023djend
L024dj3:
ror ecx, 16
mov BYTE PTR 2[edi],cl
shl ecx, 16
L025dj2:
mov BYTE PTR 1[esi],ch
L026dj1:
mov BYTE PTR [esi], cl
$L023djend:
jmp $L007finish
$L007finish:
mov ecx, DWORD PTR 64[esp]
add esp, 28
mov DWORD PTR [ecx],eax
mov DWORD PTR 4[ecx],ebx
pop edi
pop esi
pop ebx
pop ebp
ret
$L008cbc_enc_jmp_table:
DD 0
DD L016ej1
DD L015ej2
DD L014ej3
DD L012ej4
DD L011ej5
DD L010ej6
DD L009ej7
L027cbc_dec_jmp_table:
DD 0
DD L026dj1
DD L025dj2
DD L024dj3
DD L022dj4
DD L021dj5
DD L020dj6
DD L019dj7
_des_ncbc_encrypt ENDP
_TEXT ENDS
_TEXT SEGMENT
PUBLIC _des_ede3_cbc_encrypt
_des_ede3_cbc_encrypt PROC NEAR
;
push ebp
push ebx
push esi
push edi
mov ebp, DWORD PTR 28[esp]
; getting iv ptr from parameter 6
mov ebx, DWORD PTR 44[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 7
mov ecx, DWORD PTR 64[esp]
; get and push parameter 5
mov eax, DWORD PTR 56[esp]
push eax
; get and push parameter 4
mov eax, DWORD PTR 56[esp]
push eax
; get and push parameter 3
mov eax, DWORD PTR 56[esp]
push eax
push ebx
cmp ecx, 0
jz $L028decrypt
and ebp, 4294967288
mov eax, DWORD PTR 16[esp]
mov ebx, DWORD PTR 20[esp]
jz $L029encrypt_finish
L030encrypt_loop:
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