Function at 0x424780
Capabilities:
Encode data using base64

Disassembly:
sub esp, 0x5c
mov eax, dword [0x47f534]
xor eax, esp
mov dword [esp + 0x58], eax
mov eax, dword [esp + 0x60]
fnstcw word [esp + 2]
push ebx
push ebp
mov ebp, dword [eax + 8]
mov eax, dword [eax + 4]
mov dword [esp + 0x10], ebp
fild dword [esp + 0x10]
mov dword [esp + 0xc], eax
movzx eax, word [esp + 0xa]
or eax, 0xc00
fdiv qword [0x470390]
mov dword [esp + 0x14], eax
mov ebx, dword [esp + 0x6c]
mov eax, 0x55555555
push esi
push edi
mov ecx, 0x10
mov esi, str.ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_
lea edi, [esp + 0x24]
rep movsd dword es:[edi], dword [esi]
push 0xffffffffffffffff
movsb byte es:[edi], byte [esi]
xor esi, esi
fldcw word [esp + 0x20]
imul ebp
fistp qword [esp + 0x20]
mov ecx, dword [esp + 0x20]
sub edx, ebp
sar edx, 1
mov eax, edx
shr eax, 0x1f
fldcw word [esp + 0x16]
add eax, edx
lea edx, [eax + eax*2]
sub edx, ecx
lea eax, [edx + ebp + 2]
push eax
mov ecx, ebx
call fcn.00438694
xor eax, eax
test ebp, ebp
jle 0x424933
jmp 0x42481a
mov ebp, edx
test eax, eax
mov ecx, dword [esp + 0x14]
mov cl, byte [ecx + esi]
mov byte [esp + 0x12], cl
jl 0x4248f7
cmp eax, dword [ebx + 8]
jge 0x4248f7
movzx edi, cl
mov ecx, dword [ebx + 4]
mov edx, edi
shr edx, 2
mov dl, byte [esp + edx + 0x24]
mov byte [eax + ecx], dl
add esi, 1
add eax, 1
cmp esi, ebp
jge 0x4248fc
test eax, eax
mov ecx, dword [esp + 0x14]
mov cl, byte [ecx + esi]
jl 0x4248f7
cmp eax, dword [ebx + 8]
jge 0x4248f7
movzx ebp, cl
and edi, 3
mov edx, ebp
shr edx, 4
shl edi, 4
or edx, edi
mov dl, byte [esp + edx + 0x24]
mov edi, dword [ebx + 4]
mov byte [eax + edi], dl
mov edx, dword [esp + 0x18]
add esi, 1
add eax, 1
cmp esi, edx
jge 0x424966
mov ecx, dword [esp + 0x14]
mov cl, byte [ecx + esi]
add esi, 1
test eax, eax
jl 0x4248f7
cmp eax, dword [ebx + 8]
jge 0x4248f7
movzx edi, cl
and ebp, 0xf
add ebp, ebp
mov ecx, edi
shr ecx, 6
add ebp, ebp
or ecx, ebp
add eax, 1
mov ebp, dword [ebx + 4]
mov cl, byte [esp + ecx + 0x24]
mov byte [eax + ebp - 1], cl
js 0x4248f7
cmp eax, dword [ebx + 8]
jge 0x4248f7
mov ecx, dword [ebx + 4]
and edi, 0x3f
mov dword [esp + 0x1c], ebx
mov bl, byte [esp + edi + 0x24]
mov byte [eax + ecx], bl
mov ebx, dword [esp + 0x1c]
add eax, 1
cmp esi, edx
jl 0x424818
test eax, eax
jge 0x424933
call fcn.0042fbe5
test eax, eax
jl 0x4248f7
cmp eax, dword [ebx + 8]
jge 0x4248f7
movzx ecx, byte [esp + 0x12]
mov edx, dword [ebx + 4]
and ecx, 3
shl ecx, 4
add eax, 1
movzx ecx, byte [esp + ecx + 0x24]
mov byte [eax + edx - 1], cl
js 0x4248f7
cmp eax, dword [ebx + 8]
jge 0x4248f7
add eax, 1
mov edx, dword [ebx + 4]
mov byte [eax + edx - 1], 0x3d
js 0x4248f7
cmp eax, dword [ebx + 8]
jge 0x4248f7
mov ecx, dword [ebx + 4]
mov byte [eax + ecx], 0x3d
push 0xffffffffffffffff
add eax, 1
push eax
mov ecx, ebx
call fcn.00438694
mov ecx, dword [esp + 0x68]
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
mov eax, 1
call fcn.00448f05
add esp, 0x5c
ret 8
test eax, eax
jl 0x4248f7
cmp eax, dword [ebx + 8]
jge 0x4248f7
mov edx, dword [ebx + 4]
and ecx, 0xf
add eax, 1
mov cl, byte [esp + ecx*4 + 0x24]
mov byte [eax + edx - 1], cl
js 0x4248f7
cmp eax, dword [ebx + 8]
jge 0x4248f7
mov edx, dword [ebx + 4]
mov byte [eax + edx], 0x3d
jmp 0x42493f