Function at 0x4ac540
Capabilities:
Encode data using xor

Disassembly:
push ebp
push edi
push esi
push ebx
mov ebx, eax
sub esp, 0x9c
fld xword [esp + 0xb0]
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x100
je 0x4ac8a0
fld st(0)
fstp xword [esp + 0x50]
movzx edx, word [esp + 0x58]
test dx, dx
js 0x4ac760
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x500
je 0x4aca90
and dx, 0x7fff
fstp xword [esp + 0x40]
mov edi, dword [esp + 0x40]
mov ebp, dword [esp + 0x44]
mov word [esp + 0x30], dx
jne 0x4ac770
mov edx, ebp
or edx, edi
jne 0x4ac938
mov eax, dword [ebx + 0xc]
mov dword [esp + 0x24], eax
cmp eax, 0xe
jbe 0x4ac798
mov eax, dword [ebx + 4]
mov dword [esp + 0x2c], eax
lea eax, [esp + 0x78]
mov dword [esp + 0x28], eax
mov edx, dword [ebx + 0xc]
test edx, edx
jle 0x4acb28
mov byte [esp + 0x78], 0x2e
lea eax, [esp + 0x79]
mov byte [eax], 0x30
lea esi, [eax + 1]
mov eax, dword [ebx + 8]
mov dword [esp + 0x34], eax
test eax, eax
jle 0x4aca52
mov edx, dword [ebx + 0xc]
mov eax, esi
sub eax, dword [esp + 0x28]
movsx edi, word [esp + 0x30]
test edx, edx
lea ecx, [eax + edx]
mov edx, dword [esp + 0x2c]
cmovg eax, ecx
mov ecx, 0x66666667
mov dword [esp + 0x24], edi
and edx, 0x1c0
cmp edx, 1
sbb eax, 0xfffffffa
mov ebp, eax
mov eax, edi
imul ecx
mov eax, edi
mov edi, ebp
sar eax, 0x1f
mov ecx, edx
sar ecx, 2
sub ecx, eax
je 0x4acb3f
mov dword [esp + 0x30], esi
lea esi, [esi]
nop
mov eax, 0x66666667
add edi, 1
imul ecx
mov eax, ecx
lea esi, [edi + 2]
sar eax, 0x1f
sub esi, ebp
sar edx, 2
sub edx, eax
mov ecx, edx
jne 0x4ac650
movsx ebp, si
mov esi, dword [esp + 0x30]
mov eax, dword [esp + 0x34]
cmp eax, edi
jle 0x4aca80
sub eax, edi
test dword [esp + 0x2c], 0x600
je 0x4acae0
mov dword [ebx + 8], eax
test byte [esp + 0x2c], 0x80
jne 0x4aca6b
test dword [esp + 0x2c], 0x100
jne 0x4acab0
test byte [esp + 0x2c], 0x40
jne 0x4acac8
mov edx, ebx
mov eax, 0x30
call fcn.004aae60
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x58
call fcn.004aae60
mov eax, dword [ebx + 8]
test eax, eax
jle 0x4ac709
test byte [ebx + 5], 2
je 0x4ac709
sub eax, 1
mov dword [ebx + 8], eax
lea esi, [esi]
lea esi, [esi]
mov edx, ebx
mov eax, 0x30
call fcn.004aae60
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jg 0x4ac6f0
mov edi, dword [esp + 0x28]
cmp esi, dword [esp + 0x28]
ja 0x4ac73a
jmp 0x4ac8cc
movzx eax, word [ebx + 0x1c]
mov word [esp + 0x68], ax
test ax, ax
jne 0x4aca18
cmp esi, edi
je 0x4ac8cc
movsx eax, byte [esi - 1]
sub esi, 1
cmp eax, 0x2e
je 0x4ac988
cmp eax, 0x2c
je 0x4ac720
mov edx, ebx
call fcn.004aae60
jmp 0x4ac732
or dword [ebx + 4], 0x80
jmp 0x4ac57a
mov eax, dword [ebx + 0xc]
sub word [esp + 0x30], 0x3fff
mov dword [esp + 0x24], eax
cmp eax, 0xe
jbe 0x4ac79e
mov eax, dword [ebx + 4]
mov edx, ebp
or edx, edi
mov dword [esp + 0x2c], eax
jne 0x4ac808
jmp 0x4ac5ca
shld ebp, edi, 1
add edi, edi
test ebp, ebp
jns 0x4ac798
mov ecx, 0xe
sub ecx, dword [esp + 0x24]
mov eax, 4
xor edx, edx
shl ecx, 2
xor esi, esi
shld edx, eax, cl
shl eax, cl
test cl, 0x20
cmovne edx, eax
cmovne eax, esi
mov esi, edi
mov edi, ebp
shrd esi, ebp, 1
shr edi, 1
add esi, eax
adc edi, edx
test edi, edi
js 0x4ac978
shld edi, esi, 1
add esi, esi
mov ecx, 0xf
sub ecx, dword [esp + 0x24]
xor ebp, ebp
shl ecx, 2
shrd esi, edi, cl
shr edi, cl
and ecx, 0x20
cmovne esi, edi
cmovne edi, ebp
mov ebp, edi
mov edi, esi
mov eax, dword [ebx + 4]
mov dword [esp + 0x2c], eax
lea eax, [esp + 0x78]
mov dword [esp + 0x24], ebx
mov dword [esp + 0x28], eax
mov esi, eax
mov eax, dword [esp + 0x2c]
mov edx, eax
and eax, 0x20
and edx, 0x800
mov byte [esp + 0x34], al
mov dword [esp + 0x3c], edx
movzx edx, word [esp + 0x30]
jmp 0x4ac85d
xor ecx, ecx
cmp esi, dword [esp + 0x28]
ja 0x4ac84b
mov eax, dword [esp + 0x24]
mov ebx, dword [eax + 0xc]
test ebx, ebx
js 0x4ac853
lea eax, [ecx + 0x30]
mov byte [esi], al
add esi, 1
mov ecx, ebp
or ecx, edi
je 0x4aca30
mov ecx, edi
mov eax, edi
mov ebx, ebp
and ecx, 0xfffffff0
and eax, 0xf
or ebx, ecx
je 0x4ac998
mov ebx, dword [esp + 0x24]
shrd edi, ebp, 4
shr ebp, 4
mov ecx, dword [ebx + 0xc]
test ecx, ecx
jle 0x4ac889
sub ecx, 1
mov dword [ebx + 0xc], ecx
test eax, eax
je 0x4ac838
mov ecx, eax
cmp eax, 9
jbe 0x4ac84b
add eax, 0x37
or al, byte [esp + 0x34]
jmp 0x4ac84e
fstp st(0)
add esp, 0x9c
mov ecx, ebx
mov edx, 0x5e93f7
xor eax, eax
pop ebx
pop esi
pop edi
pop ebp
jmp fcn.004ab1c0
mov edx, ebx
mov eax, 0x30
call fcn.004aae60
mov eax, dword [ebx + 0xc]
lea edx, [eax - 1]
mov dword [ebx + 0xc], edx
test eax, eax
jg 0x4ac8c0
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x50
call fcn.004aae60
mov eax, dword [esp + 0x24]
add dword [ebx + 8], ebp
or dword [ebx + 4], 0x1c0
cdq
mov dword [esp + 0x68], eax
mov dword [esp + 0x6c], edx
mov ecx, edx
mov dword [esp], eax
mov eax, dword [esp + 0x6c]
sar ecx, 0x1f
mov dword [esp + 0x10], ebx
mov dword [esp + 0x70], ecx
mov dword [esp + 0x74], ecx
mov dword [esp + 4], eax
mov dword [esp + 8], ecx
mov dword [esp + 0xc], ecx
call fcn.004ab800
add esp, 0x9c
pop ebx
pop esi
pop edi
pop ebp
ret
test ebp, ebp
js 0x4acb49
mov eax, 0xffffc001
lea esi, [esi]
shld ebp, edi, 1
mov edx, eax
add edi, edi
sub eax, 1
test ebp, ebp
jns 0x4ac948
mov word [esp + 0x30], dx
mov eax, dword [ebx + 0xc]
mov dword [esp + 0x24], eax
cmp eax, 0xe
ja 0x4ac801
jmp 0x4ac7a2
add word [esp + 0x30], 1
jmp 0x4ac7e1
mov eax, ebx
call fcn.004abc20
jmp 0x4ac732
cmp esi, dword [esp + 0x28]
ja 0x4ac9b8
mov ebx, dword [esp + 0x3c]
test ebx, ebx
jne 0x4ac9b8
mov ecx, dword [esp + 0x24]
mov ecx, dword [ecx + 0xc]
test ecx, ecx
jle 0x4ac9be
lea esi, [esi]
mov byte [esi], 0x2e
add esi, 1
mov ecx, edi
xor ecx, 1
mov dword [esp + 0x30], ecx
lea ecx, [edx - 1]
mov word [esp + 0x3a], cx
mov ecx, dword [esp + 0x30]
or ecx, ebp
je 0x4acb18
movzx ecx, word [esp + 0x3a]
mov dword [esp + 0x30], esi
mov esi, eax
lea esi, [esi]
lea esi, [esi]
shrd edi, ebp, 1
shr ebp, 1
mov edx, ecx
mov ebx, edi
mov eax, ebp
lea ecx, [edx - 1]
xor ebx, 1
or eax, ebx
jne 0x4ac9f0
mov eax, esi
xor edi, edi
mov esi, dword [esp + 0x30]
xor ebp, ebp
jmp 0x4ac889
mov ecx, ebx
mov edx, 1
lea eax, [esp + 0x68]
call fcn.004aaec0
jmp 0x4ac732
mov word [esp + 0x30], dx
mov ebx, dword [esp + 0x24]
cmp esi, dword [esp + 0x28]
je 0x4ac5d2
mov eax, dword [ebx + 8]
mov dword [esp + 0x34], eax
test eax, eax
jg 0x4ac5fb
movsx eax, word [esp + 0x30]
mov ebp, 2
mov dword [esp + 0x24], eax
test byte [esp + 0x2c], 0x80
je 0x4ac69e
mov edx, ebx
mov eax, 0x2d
call fcn.004aae60
jmp 0x4ac6b7
mov dword [ebx + 8], 0xffffffff
jmp 0x4ac693
fstp st(0)
add esp, 0x9c
mov eax, edx
mov ecx, ebx
mov edx, 0x5e93fb
pop ebx
and eax, 0x8000
pop esi
pop edi
pop ebp
jmp fcn.004ab1c0
mov edx, ebx
mov eax, 0x2b
call fcn.004aae60
jmp 0x4ac6b7
mov edx, ebx
mov eax, 0x20
call fcn.004aae60
jmp 0x4ac6b7
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jle 0x4ac693
nop
mov edx, ebx
mov eax, 0x20
call fcn.004aae60
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jg 0x4acaf0
mov eax, dword [ebx + 4]
mov dword [esp + 0x2c], eax
jmp 0x4ac693
xor edi, edi
xor ebp, ebp
jmp 0x4ac889
mov eax, dword [esp + 0x28]
test dword [esp + 0x2c], 0x800
je 0x4ac5e6
jmp 0x4ac5dd
mov ebp, 2
jmp 0x4ac674
mov eax, 0xffffc002
mov word [esp + 0x30], ax
jmp 0x4ac95c