Function at 0x449b40
Capabilities:
Decode data using base64 via winapi

Disassembly:
push ebx
mov ebx, esp
sub esp, 8
and esp, 0xfffffff8
add esp, 4
push ebp
mov ebp, dword [ebx + 4]
mov dword [esp + 4], ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x483ca5
mov eax, dword fs:[0]
push eax
push ebx
sub esp, 0x48
mov eax, dword [0x4a1500]
xor eax, ebp
mov dword [ebp - 0x14], eax
push esi
push edi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov dword [ebp - 0x40], ecx
mov eax, dword [ebx + 0xc]
mov edx, 6
mov edi, dword [ebx + 8]
mov esi, str.mbos__
mov dword [ebp - 0x38], eax
cmp eax, edx
jb 0x449dfe
mov ecx, edi
sub edx, 4
mov eax, dword [ecx]
cmp eax, dword [esi]
jne 0x449bb7
add ecx, 4
add esi, 4
sub edx, 4
jae 0x449ba1
cmp edx, 0xfffffffc
je 0x449beb
mov al, byte [ecx]
cmp al, byte [esi]
jne 0x449be4
cmp edx, 0xfffffffd
je 0x449beb
mov al, byte [ecx + 1]
cmp al, byte [esi + 1]
jne 0x449be4
cmp edx, 0xfffffffe
je 0x449beb
mov al, byte [ecx + 2]
cmp al, byte [esi + 2]
jne 0x449be4
cmp edx, 0xffffffff
je 0x449beb
mov al, byte [ecx + 3]
cmp al, byte [esi + 3]
je 0x449beb
sbb eax, eax
or eax, 1
jmp 0x449bed
xor eax, eax
test eax, eax
mov eax, dword [ebp - 0x38]
jne 0x449dfe
sub eax, 6
mov dword [ebp - 0x18], 0
xorps xmm0, xmm0
mov dword [ebp - 0x38], eax
add edi, 6
movq qword [ebp - 0x20], xmm0
mov dword [ebx + 8], edi
mov dword [ebx + 0xc], eax
mov dword [ebp - 0x20], 0
mov dword [ebp - 0x1c], 0
mov dword [ebp - 0x18], 0
push 0
push 0
lea ecx, [ebp - 0x30]
mov dword [ebp - 4], 0
push ecx
push 0
push 6
push eax
push edi
mov dword [ebp - 0x30], 0
call dword [sym.imp.CRYPT32.dll_CryptStringToBinaryA]
test eax, eax
je 0x449dc1
mov esi, dword [ebp - 0x30]
test esi, esi
je 0x449dc1
mov eax, dword [ebp - 0x1c]
mov edx, eax
mov ecx, dword [ebp - 0x20]
sub edx, ecx
mov byte [ebp - 0x31], 0
mov dword [ebp - 0x3c], eax
cmp esi, edx
jae 0x449c7a
lea eax, [ecx + esi]
jmp 0x449caf
jbe 0x449cb2
mov eax, dword [ebp - 0x18]
sub eax, ecx
cmp esi, eax
jbe 0x449c97
lea eax, [ebp - 0x31]
push eax
push esi
lea ecx, [ebp - 0x20]
call fcn.0044a0a0
mov ecx, dword [ebp - 0x20]
jmp 0x449cb2
sub esi, edx
push esi
push 0
push dword [ebp - 0x3c]
call fcn.00454a10
mov eax, dword [ebp - 0x3c]
add esp, 0xc
mov ecx, dword [ebp - 0x20]
add eax, esi
mov dword [ebp - 0x1c], eax
push 0
push 0
lea eax, [ebp - 0x30]
push eax
push ecx
push 6
push dword [ebp - 0x38]
push edi
call dword [sym.imp.CRYPT32.dll_CryptStringToBinaryA]
test eax, eax
je 0x449dc1
xorps xmm0, xmm0
mov dword [ebp - 0x24], 0
movq qword [ebp - 0x2c], xmm0
mov dword [ebp - 0x2c], 0
mov dword [ebp - 0x28], 0
mov dword [ebp - 0x24], 0
lea edx, [ebp - 0x2c]
mov byte [ebp - 4], 1
lea ecx, [ebp - 0x20]
call fcn.00449730
test al, al
jne 0x449d0b
mov byte [ebp - 0x31], al
jmp 0x449d76
mov eax, dword [ebp - 0x28]
lea ecx, [ebp - 0x58]
mov edx, dword [ebp - 0x2c]
xorps xmm0, xmm0
sub eax, edx
mov dword [ebp - 0x48], 0
push eax
push edx
movups xmmword [ebp - 0x58], xmm0
mov dword [ebp - 0x44], 0
call fcn.0040c1e0
mov ecx, dword [ebp - 0x40]
lea eax, [ebp - 0x58]
push eax
call fcn.00442820
mov ecx, dword [ebp - 0x44]
cmp ecx, 0xf
jbe 0x449d72
mov edx, dword [ebp - 0x58]
inc ecx
mov eax, edx
cmp ecx, 0x1000
jb 0x449d68
mov edx, dword [eax - 4]
add ecx, 0x23
sub eax, edx
add eax, 0xfffffffc
cmp eax, 0x1f
ja 0x449e8e
push ecx
push edx
call fcn.00452718
add esp, 8
mov byte [ebp - 0x31], 1
mov ecx, dword [ebp - 0x2c]
test ecx, ecx
je 0x449dc5
mov edx, dword [ebp - 0x24]
mov eax, ecx
sub edx, ecx
cmp edx, 0x1000
jb 0x449da0
mov ecx, dword [eax - 4]
add edx, 0x23
sub eax, ecx
add eax, 0xfffffffc
cmp eax, 0x1f
ja 0x449e8e
push edx
push ecx
call fcn.00452718
add esp, 8
mov dword [ebp - 0x2c], 0
mov dword [ebp - 0x28], 0
mov dword [ebp - 0x24], 0
jmp 0x449dc5
mov byte [ebp - 0x31], 0
mov ecx, dword [ebp - 0x20]
test ecx, ecx
je 0x449df9
mov edx, dword [ebp - 0x18]
mov eax, ecx
sub edx, ecx
cmp edx, 0x1000
jb 0x449def
mov ecx, dword [eax - 4]
add edx, 0x23
sub eax, ecx
add eax, 0xfffffffc
cmp eax, 0x1f
ja 0x449e8e
push edx
push ecx
call fcn.00452718
add esp, 8
mov al, byte [ebp - 0x31]
jmp 0x449e70
add eax, edi
mov dword [ebp - 0x48], 0
mov dword [ebp - 0x44], 0
xorps xmm0, xmm0
movups xmmword [ebp - 0x58], xmm0
cmp edi, eax
jne 0x449e26
mov dword [ebp - 0x44], 0xf
mov byte [ebp - 0x58], 0
jmp 0x449e32
sub eax, edi
lea ecx, [ebp - 0x58]
push eax
push edi
call fcn.0040c1e0
mov ecx, dword [ebp - 0x40]
lea eax, [ebp - 0x58]
push eax
call fcn.00442820
mov ecx, dword [ebp - 0x44]
cmp ecx, 0xf
jbe 0x449e6e
mov edx, dword [ebp - 0x58]
inc ecx
mov eax, edx
cmp ecx, 0x1000
jb 0x449e64
mov edx, dword [eax - 4]
add ecx, 0x23
sub eax, edx
add eax, 0xfffffffc
cmp eax, 0x1f
ja 0x449e8e
push ecx
push edx
call fcn.00452718
add esp, 8
mov al, 1
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
mov ecx, dword [ebp - 0x14]
xor ecx, ebp
call fcn.004523b6
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret
call fcn.0045e581
int3