Function at 0x497450
Capabilities:
Encode data using xor

Disassembly:
push ebp
push edi
push esi
push ebx
mov ebx, eax
sub esp, 0x7c
fld xword [esp + 0x90]
fld st(0)
fstp xword [esp + 0x48]
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x100
je 0x497941
fld st(0)
fstp xword [esp + 0x30]
movzx edx, word [esp + 0x38]
test dx, dx
jns 0x497490
or dword [ebx + 4], 0x80
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x500
je 0x497971
and dx, 0x7fff
mov word [esp + 0x18], dx
jne 0x497510
fstp xword [esp + 0x20]
mov ebp, dword [esp + 0x24]
mov edi, dword [esp + 0x20]
mov edx, ebp
mov dword [esp], edi
mov dword [esp + 4], ebp
or edx, edi
je 0x497660
test ebp, ebp
js 0x497a3a
mov esi, edi
mov eax, 0xffffc001
mov edi, ebp
lea esi, [esi]
shld edi, esi, 1
mov edx, eax
add esi, esi
sub eax, 1
test edi, edi
jns 0x4974e0
mov dword [esp], esi
mov dword [esp + 4], edi
mov word [esp + 0x18], dx
mov ebp, dword [ebx + 0xc]
cmp ebp, 0xe
ja 0x4975b2
jmp 0x497551
fstp st(0)
mov ebp, dword [ebx + 0xc]
mov eax, dword [esp + 0x48]
mov edx, dword [esp + 0x4c]
sub word [esp + 0x18], 0x3fff
cmp ebp, 0xe
mov dword [esp], eax
mov dword [esp + 4], edx
ja 0x497680
test edx, edx
js 0x497551
mov esi, eax
mov edi, edx
lea esi, [esi]
shld edi, esi, 1
add esi, esi
test edi, edi
jns 0x497540
mov dword [esp], esi
mov dword [esp + 4], edi
mov ecx, 0xe
mov eax, 4
xor edx, edx
sub ecx, ebp
xor esi, esi
mov edi, dword [esp + 4]
shl ecx, 2
shld edx, eax, cl
shl eax, cl
test cl, 0x20
cmovne edx, eax
cmovne eax, esi
mov esi, dword [esp]
shrd esi, edi, 1
shr edi, 1
add esi, eax
adc edi, edx
test edi, edi
js 0x497990
shld edi, esi, 1
add esi, esi
mov ecx, 0xf
xor eax, eax
sub ecx, ebp
shl ecx, 2
shrd esi, edi, cl
shr edi, cl
test cl, 0x20
cmovne esi, edi
cmovne edi, eax
mov dword [esp], esi
mov dword [esp + 4], edi
mov eax, dword [ebx + 4]
mov dword [esp + 0x14], eax
lea eax, [esp + 0x58]
mov esi, dword [esp]
mov dword [esp], ebx
mov dword [esp + 0x10], eax
mov ebp, eax
mov eax, dword [esp + 0x14]
mov edi, eax
and eax, 0x20
and edi, 0x800
mov byte [esp + 0x1b], al
mov dword [esp + 0x1c], edi
mov edi, dword [esp + 4]
jmp 0x497615
xor eax, eax
cmp ebp, dword [esp + 0x10]
ja 0x497602
mov ebx, dword [esp]
mov ecx, dword [ebx + 0xc]
test ecx, ecx
js 0x49760b
lea ecx, [eax + 0x30]
mov byte [ebp], cl
add ebp, 1
mov edx, edi
or edx, esi
je 0x4978f0
mov ecx, esi
mov dword [esp + 0xc], 0
and ecx, 0xf
mov ebx, ecx
mov dword [esp + 8], ecx
xor ebx, esi
mov eax, ebx
or eax, edi
je 0x497860
mov edx, dword [esp]
shrd esi, edi, 4
shr edi, 4
mov eax, dword [edx + 0xc]
test eax, eax
jle 0x49764b
sub eax, 1
mov dword [edx + 0xc], eax
test ecx, ecx
je 0x4975f0
cmp ecx, 9
mov eax, ecx
jbe 0x497602
add ecx, 0x37
or cl, byte [esp + 0x1b]
jmp 0x497605
mov ebp, dword [ebx + 0xc]
cmp ebp, 0xe
ja 0x497a00
mov esi, dword [esp]
mov edi, dword [esp + 4]
jmp 0x497540
mov ebp, dword [esp + 4]
mov edi, dword [esp]
mov eax, dword [ebx + 4]
mov edx, ebp
or edx, edi
mov dword [esp + 0x14], eax
jne 0x4975b9
lea eax, [esp + 0x58]
mov dword [esp + 0x10], eax
mov edx, dword [ebx + 0xc]
test edx, edx
jle 0x497a10
lea eax, [esp + 0x59]
mov byte [esp + 0x58], 0x2e
lea ebp, [eax + 1]
mov byte [eax], 0x30
mov eax, dword [ebx + 8]
test eax, eax
mov dword [esp + 8], eax
jle 0x49790c
mov eax, ebp
sub eax, dword [esp + 0x10]
mov edx, dword [ebx + 0xc]
movsx esi, word [esp + 0x18]
test edx, edx
lea ecx, [eax + edx]
mov dword [esp], esi
cmovg eax, ecx
xor edx, edx
test dword [esp + 0x14], 0x1c0
mov ecx, 0x66666667
setne dl
lea edi, [eax + edx + 5]
mov eax, esi
imul ecx
mov eax, esi
sar eax, 0x1f
mov ecx, edx
sar ecx, 2
sub ecx, eax
je 0x497a30
mov esi, 2
mov eax, 0x66666667
add edi, 1
add esi, 1
imul ecx
sar ecx, 0x1f
sar edx, 2
sub edx, ecx
mov ecx, edx
jne 0x497713
movsx esi, si
mov eax, dword [esp + 8]
cmp eax, edi
jle 0x497935
sub eax, edi
test dword [esp + 0x14], 0x600
je 0x4979b0
mov dword [ebx + 8], eax
test byte [esp + 0x14], 0x80
jne 0x497924
test dword [esp + 0x14], 0x100
jne 0x497960
test byte [esp + 0x14], 0x40
jne 0x4979e5
mov edx, ebx
mov eax, 0x30
call fcn.00496260
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x58
call fcn.00496260
mov eax, dword [ebx + 8]
test eax, eax
jle 0x4977ba
test byte [ebx + 5], 2
je 0x4977ba
sub eax, 1
mov dword [ebx + 8], eax
mov edx, ebx
mov eax, 0x30
call fcn.00496260
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
test eax, eax
mov dword [ebx + 8], edx
jg 0x4977a1
cmp ebp, dword [esp + 0x10]
mov edi, dword [esp + 0x10]
ja 0x4977f4
jmp 0x49781e
movzx eax, word [ebx + 0x1c]
test ax, ax
mov word [esp + 0x46], ax
je 0x4977f0
lea eax, [esp + 0x46]
mov ecx, ebx
mov edx, 1
call fcn.004962c0
nop
cmp ebp, edi
je 0x49781e
sub ebp, 1
movsx eax, byte [ebp]
cmp eax, 0x2e
je 0x4978e0
cmp eax, 0x2c
je 0x4977d0
mov edx, ebx
call fcn.00496260
jmp 0x4977f0
mov edx, ebx
mov eax, 0x30
call fcn.00496260
mov eax, dword [ebx + 0xc]
lea edx, [eax - 1]
test eax, eax
mov dword [ebx + 0xc], edx
jg 0x497812
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x50
call fcn.00496260
add dword [ebx + 8], esi
mov eax, dword [esp]
mov ecx, ebx
or dword [ebx + 4], 0x1c0
cdq
call fcn.00496ac0
add esp, 0x7c
pop ebx
pop esi
pop edi
pop ebp
ret
cmp ebp, dword [esp + 0x10]
ja 0x497880
mov eax, dword [esp + 0x1c]
test eax, eax
jne 0x497880
mov eax, dword [esp]
mov eax, dword [eax + 0xc]
test eax, eax
jle 0x497887
nop
lea esi, [esi]
mov byte [ebp], 0x2e
add ebp, 1
mov eax, esi
mov esi, edi
movzx edi, word [esp + 0x18]
xor eax, 1
or eax, esi
lea ebx, [edi - 1]
je 0x4979a0
mov dword [esp + 8], ebp
mov eax, ecx
xor edx, edx
mov ebp, ecx
nop
lea esi, [esi]
shrd eax, edx, 1
shr edx, 1
mov esi, ebx
mov edi, eax
mov ecx, edx
lea ebx, [esi - 1]
xor edi, 1
or ecx, edi
jne 0x4978b0
mov ecx, ebp
mov word [esp + 0x18], si
mov ebp, dword [esp + 8]
xor esi, esi
xor edi, edi
jmp 0x49764b
mov eax, ebx
call fcn.004965a0
jmp 0x4977f0
cmp ebp, dword [esp + 0x10]
mov ebx, dword [esp]
je 0x4976a0
mov eax, dword [ebx + 8]
test eax, eax
mov dword [esp + 8], eax
jg 0x4976c9
movsx eax, word [esp + 0x18]
test byte [esp + 0x14], 0x80
mov esi, 2
mov dword [esp], eax
je 0x497759
mov edx, ebx
mov eax, 0x2d
call fcn.00496260
jmp 0x497772
mov dword [ebx + 8], 0xffffffff
jmp 0x49774e
fstp st(0)
mov ecx, ebx
mov edx, 0x4dabf7
xor eax, eax
call fcn.00496500
add esp, 0x7c
pop ebx
pop esi
pop edi
pop ebp
ret
mov edx, ebx
mov eax, 0x2b
call fcn.00496260
jmp 0x497772
fstp st(0)
mov eax, edx
mov ecx, ebx
mov edx, 0x4dabfb
and eax, 0x8000
call fcn.00496500
add esp, 0x7c
pop ebx
pop esi
pop edi
pop ebp
ret
add word [esp + 0x18], 1
jmp 0x497591
xor esi, esi
xor edi, edi
jmp 0x49764b
sub eax, 1
mov dword [ebx + 8], eax
lea esi, [esi]
lea edi, [edi]
mov edx, ebx
mov eax, 0x20
call fcn.00496260
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
test eax, eax
mov dword [ebx + 8], edx
jg 0x4979c0
mov eax, dword [ebx + 4]
mov dword [esp + 0x14], eax
jmp 0x49774e
mov edx, ebx
mov eax, 0x20
call fcn.00496260
jmp 0x497772
mov eax, dword [ebx + 4]
mov dword [esp + 0x14], eax
jmp 0x497698
test dword [esp + 0x14], 0x800
mov eax, dword [esp + 0x10]
je 0x4976b4
jmp 0x4976ab
mov esi, 2
jmp 0x49772f
mov eax, 0xffffc002
mov word [esp + 0x18], ax
jmp 0x4974fb