Function at 0x4a4380
Capabilities:
Encode data using xor

Disassembly:
push ebp
push edi
push esi
push ebx
mov ebx, eax
sub esp, 0x6c
fld xword [esp + 0x80]
fld st(0)
fstp xword [esp + 0x38]
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x100
je 0x4a46b0
fld st(0)
fstp xword [esp + 0x20]
movzx edx, word [esp + 0x28]
test dx, dx
js 0x4a4590
fxam
wait
fnstsw ax
fstp st(0)
and ax, 0x4500
cmp ax, 0x500
je 0x4a4870
and dx, 0x7fff
mov esi, dword [esp + 0x38]
mov edi, dword [esp + 0x3c]
mov word [esp + 8], dx
jne 0x4a45a0
mov edx, edi
or edx, esi
jne 0x4a4720
mov ebp, dword [ebx + 0xc]
cmp ebp, 0xe
jbe 0x4a45c8
mov eax, dword [ebx + 4]
mov dword [esp + 0xc], eax
lea eax, [esp + 0x48]
mov dword [esp + 4], eax
mov edx, dword [ebx + 0xc]
test edx, edx
jle 0x4a4908
mov byte [esp + 0x48], 0x2e
lea eax, [esp + 0x49]
mov byte [eax], 0x30
lea ebp, [eax + 1]
mov eax, dword [ebx + 8]
mov dword [esp + 0x14], eax
test eax, eax
jle 0x4a4831
mov edx, dword [ebx + 0xc]
mov eax, ebp
sub eax, dword [esp + 4]
movsx esi, word [esp + 8]
lea ecx, [eax + edx]
test edx, edx
cmovg eax, ecx
xor edx, edx
mov ecx, 0x66666667
mov dword [esp + 0x10], esi
test dword [esp + 0xc], 0x1c0
setne dl
lea edi, [eax + edx + 5]
mov eax, esi
imul ecx
mov eax, esi
mov dword [esp + 8], edi
sar eax, 0x1f
mov ecx, edx
sar ecx, 2
sub ecx, eax
je 0x4a4920
lea esi, [esi]
mov eax, 0x66666667
add edi, 1
imul ecx
sar ecx, 0x1f
lea esi, [edi + 2]
sub si, word [esp + 8]
sar edx, 2
sub edx, ecx
mov ecx, edx
jne 0x4a4488
movsx esi, si
mov eax, dword [esp + 0x14]
cmp eax, edi
jle 0x4a4860
sub eax, edi
test dword [esp + 0xc], 0x600
je 0x4a48c0
mov dword [ebx + 8], eax
test byte [esp + 0xc], 0x80
jne 0x4a484a
test dword [esp + 0xc], 0x100
jne 0x4a4890
test byte [esp + 0xc], 0x40
jne 0x4a48a8
mov edx, ebx
mov eax, 0x30
call fcn.004a2ee0
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x58
call fcn.004a2ee0
mov eax, dword [ebx + 8]
test eax, eax
jle 0x4a4539
test byte [ebx + 5], 2
je 0x4a4539
sub eax, 1
mov dword [ebx + 8], eax
lea esi, [esi]
nop
mov edx, ebx
mov eax, 0x30
call fcn.004a2ee0
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jg 0x4a4520
mov edi, dword [esp + 4]
cmp ebp, dword [esp + 4]
ja 0x4a456a
jmp 0x4a46dc
movzx eax, word [ebx + 0x1c]
mov word [esp + 0x36], ax
test ax, ax
jne 0x4a4800
cmp ebp, edi
je 0x4a46dc
movsx eax, byte [ebp - 1]
sub ebp, 1
cmp eax, 0x2e
je 0x4a4770
cmp eax, 0x2c
je 0x4a4550
mov edx, ebx
call fcn.004a2ee0
jmp 0x4a4562
or dword [ebx + 4], 0x80
jmp 0x4a43bd
mov ebp, dword [ebx + 0xc]
sub word [esp + 8], 0x3fff
cmp ebp, 0xe
jbe 0x4a45ce
mov eax, dword [ebx + 4]
mov edx, edi
or edx, esi
mov dword [esp + 0xc], eax
jne 0x4a462a
jmp 0x4a4407
shld edi, esi, 1
add esi, esi
test edi, edi
jns 0x4a45c8
mov ecx, 0xe
mov eax, 4
xor edx, edx
sub ecx, ebp
shl ecx, 2
shld edx, eax, cl
shl eax, cl
test cl, 0x20
je 0x4a45f1
mov edx, eax
xor eax, eax
shrd esi, edi, 1
shr edi, 1
add esi, eax
adc edi, edx
test edi, edi
js 0x4a4760
shld edi, esi, 1
add esi, esi
mov ecx, 0xf
mov eax, dword [ebx + 4]
sub ecx, ebp
xor ebp, ebp
shl ecx, 2
mov dword [esp + 0xc], eax
shrd esi, edi, cl
shr edi, cl
test cl, 0x20
cmovne esi, edi
cmovne edi, ebp
lea eax, [esp + 0x48]
mov dword [esp + 4], eax
mov ebp, eax
mov eax, dword [esp + 0xc]
mov ecx, eax
and eax, 0x20
and ecx, 0x800
mov byte [esp + 0x10], al
mov dword [esp + 0x1c], ecx
jmp 0x4a4672
xor edx, edx
cmp ebp, dword [esp + 4]
ja 0x4a465f
mov ecx, dword [ebx + 0xc]
test ecx, ecx
js 0x4a4668
lea eax, [edx + 0x30]
mov byte [ebp], al
add ebp, 1
mov edx, edi
or edx, esi
je 0x4a4818
mov edx, esi
mov eax, esi
mov ecx, edi
and edx, 0xfffffff0
and eax, 0xf
or ecx, edx
je 0x4a4780
mov edx, dword [ebx + 0xc]
shrd esi, edi, 4
shr edi, 4
test edx, edx
jle 0x4a469a
sub edx, 1
mov dword [ebx + 0xc], edx
test eax, eax
je 0x4a4650
mov edx, eax
cmp eax, 9
jbe 0x4a465f
add eax, 0x37
or al, byte [esp + 0x10]
jmp 0x4a4662
fstp st(0)
mov ecx, ebx
mov edx, 0x586cfb
xor eax, eax
call fcn.004a3190
add esp, 0x6c
pop ebx
pop esi
pop edi
pop ebp
ret
mov edx, ebx
mov eax, 0x30
call fcn.004a2ee0
mov eax, dword [ebx + 0xc]
lea edx, [eax - 1]
mov dword [ebx + 0xc], edx
test eax, eax
jg 0x4a46d0
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x50
call fcn.004a2ee0
add dword [ebx + 8], esi
mov eax, dword [esp + 0x10]
mov ecx, ebx
or dword [ebx + 4], 0x1c0
cdq
call fcn.004a37c0
add esp, 0x6c
pop ebx
pop esi
pop edi
pop ebp
ret
test edi, edi
js 0x4a4930
mov eax, 0xffffc001
lea esi, [esi]
shld edi, esi, 1
mov edx, eax
add esi, esi
sub eax, 1
test edi, edi
jns 0x4a4730
mov word [esp + 8], dx
mov ebp, dword [ebx + 0xc]
cmp ebp, 0xe
jbe 0x4a45d2
mov eax, dword [ebx + 4]
mov dword [esp + 0xc], eax
jmp 0x4a462a
add word [esp + 8], 1
jmp 0x4a4609
mov eax, ebx
call fcn.004a3230
jmp 0x4a4562
cmp ebp, dword [esp + 4]
ja 0x4a4798
mov ecx, dword [esp + 0x1c]
test ecx, ecx
jne 0x4a4798
mov edx, dword [ebx + 0xc]
test edx, edx
jle 0x4a479f
lea esi, [esi]
mov byte [ebp], 0x2e
add ebp, 1
movzx edx, word [esp + 8]
mov ecx, esi
xor ecx, 1
sub edx, 1
mov dword [esp + 0x14], ecx
mov word [esp + 0x1a], dx
mov edx, dword [esp + 0x14]
or edx, edi
je 0x4a48f8
mov dword [esp + 8], eax
movzx edx, word [esp + 0x1a]
mov dword [esp + 0x14], ebx
nop
shrd esi, edi, 1
shr edi, 1
mov ebx, edx
mov ecx, esi
mov eax, edi
lea edx, [ebx - 1]
xor ecx, 1
or eax, ecx
jne 0x4a47d0
mov eax, dword [esp + 8]
xor esi, esi
mov word [esp + 8], bx
xor edi, edi
mov ebx, dword [esp + 0x14]
jmp 0x4a469a
mov ecx, ebx
mov edx, 1
lea eax, [esp + 0x36]
call fcn.004a2f40
jmp 0x4a4562
cmp ebp, dword [esp + 4]
je 0x4a440f
mov eax, dword [ebx + 8]
mov dword [esp + 0x14], eax
test eax, eax
jg 0x4a4438
movsx eax, word [esp + 8]
mov esi, 2
mov dword [esp + 0x10], eax
test byte [esp + 0xc], 0x80
je 0x4a44d3
mov edx, ebx
mov eax, 0x2d
call fcn.004a2ee0
jmp 0x4a44ec
mov dword [ebx + 8], 0xffffffff
jmp 0x4a44c8
mov eax, edx
mov ecx, ebx
mov edx, 0x586cff
and eax, 0x8000
call fcn.004a3190
add esp, 0x6c
pop ebx
pop esi
pop edi
pop ebp
ret
mov edx, ebx
mov eax, 0x2b
call fcn.004a2ee0
jmp 0x4a44ec
mov edx, ebx
mov eax, 0x20
call fcn.004a2ee0
jmp 0x4a44ec
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jle 0x4a44c8
nop
mov edx, ebx
mov eax, 0x20
call fcn.004a2ee0
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jg 0x4a48d0
mov eax, dword [ebx + 4]
mov dword [esp + 0xc], eax
jmp 0x4a44c8
xor esi, esi
xor edi, edi
jmp 0x4a469a
mov eax, dword [esp + 4]
test dword [esp + 0xc], 0x800
je 0x4a4423
jmp 0x4a441a
mov edi, dword [esp + 8]
mov esi, 2
jmp 0x4a44a9
mov eax, 0xffffc002
mov word [esp + 8], ax
jmp 0x4a4744