Function at 0x4b4fc0
Capabilities:
Encode data using xor
Encrypt data using rc4 prga

Disassembly:
mov eax, dword [edi + 8]
sub esp, 0x1c
push ebx
push ebp
xor ebp, ebp
cmp eax, ebp
push esi
jne 0x4b5028
cmp dword [esp + 0x30], ebp
je 0x4b4ff8
mov eax, dword [edi + 0x10]
mov byte [edi + 4], 6
mov dword [edi + 8], 0x40
mov ecx, dword [eax]
push 0x100
call ecx
add esp, 4
cmp eax, ebp
mov dword [edi], eax
jne 0x4b5001
mov dword [edi + 8], ebp
pop esi
pop ebp
xor eax, eax
pop ebx
add esp, 0x1c
ret
push 0x100
push ebp
push eax
call fcn.005185b0
mov edx, dword [esp + 0x38]
add esp, 0xc
call fcn.004b4f90
mov edx, dword [edi + 8]
mov esi, eax
sub edx, 1
and esi, edx
jmp 0x4b5247
mov ecx, dword [esp + 0x2c]
mov al, byte [ecx]
test al, al
mov dword [esp + 0x10], ebp
mov byte [esp + 0xf], al
je 0x4b505d
lea ebx, [ebx]
mov edx, dword [esp + 0x10]
imul edx, edx, 0xf4243
movzx eax, al
xor edx, eax
mov al, byte [ecx + 1]
add ecx, 1
test al, al
mov dword [esp + 0x10], edx
jne 0x4b5040
mov ebx, dword [edi + 8]
mov esi, dword [esp + 0x10]
mov eax, dword [edi]
add ebx, 0xffffffff
and esi, ebx
xor dl, dl
cmp dword [eax + esi*4], ebp
mov dword [esp + 0x14], eax
je 0x4b50ec
mov ecx, dword [eax + esi*4]
mov eax, dword [ecx]
mov cl, byte [esp + 0xf]
cmp cl, byte [eax]
jne 0x4b509f
mov ebp, dword [esp + 0x2c]
sub ebp, eax
lea esp, [esp]
test cl, cl
je 0x4b50de
mov cl, byte [eax + ebp + 1]
add eax, 1
cmp cl, byte [eax]
je 0x4b5090
test dl, dl
jne 0x4b50be
movzx ecx, byte [edi + 4]
mov edx, ebx
not edx
and edx, dword [esp + 0x10]
sub ecx, 1
shr edx, cl
mov eax, ebx
shr eax, 2
and dl, al
or dl, 1
movzx eax, dl
cmp esi, eax
jae 0x4b50ce
mov ecx, dword [edi + 8]
sub ecx, eax
add esi, ecx
jmp 0x4b50d0
sub esi, eax
mov eax, dword [edi]
cmp dword [eax + esi*4], 0
je 0x4b50ec
mov eax, dword [esp + 0x14]
jmp 0x4b5076
mov ecx, dword [esp + 0x14]
mov eax, dword [ecx + esi*4]
pop esi
pop ebp
pop ebx
add esp, 0x1c
ret
cmp dword [esp + 0x30], 0
je 0x4b4ff8
mov al, byte [edi + 4]
mov edx, dword [edi + 0xc]
movzx ecx, al
sub ecx, 1
shr edx, cl
test edx, edx
je 0x4b5247
add al, 1
movzx ecx, al
mov esi, 1
shl esi, cl
mov byte [esp + 0xf], al
mov dword [esp + 0x1c], ecx
mov ecx, dword [edi + 0x10]
mov edx, dword [ecx]
lea eax, [esi*4]
push eax
mov dword [esp + 0x18], esi
lea ebp, [esi - 1]
call edx
mov ebx, eax
add esp, 4
test ebx, ebx
je 0x4b4ff8
lea eax, [esi*4]
push eax
push 0
push ebx
call fcn.005185b0
xor ecx, ecx
add esp, 0xc
cmp dword [edi + 8], ecx
mov dword [esp + 0x18], ecx
jbe 0x4b51e5
mov eax, dword [edi]
cmp dword [eax + ecx*4], 0
lea eax, [eax + ecx*4]
je 0x4b51d9
mov eax, dword [eax]
mov edx, dword [eax]
mov dword [esp + 0x24], eax
call fcn.004b4f90
mov esi, eax
and esi, ebp
xor dl, dl
cmp dword [ebx + esi*4], 0
mov dword [esp + 0x20], eax
je 0x4b51ca
mov edi, edi
test dl, dl
jne 0x4b51ad
mov ecx, dword [esp + 0x1c]
mov edx, ebp
not edx
add ecx, 0xffffffff
and edx, eax
shr edx, cl
mov ecx, ebp
shr ecx, 2
and dl, cl
or dl, 1
movzx ecx, dl
cmp esi, ecx
jae 0x4b51c2
mov eax, dword [esp + 0x14]
sub eax, ecx
add esi, eax
mov eax, dword [esp + 0x20]
jmp 0x4b51c4
sub esi, ecx
cmp dword [ebx + esi*4], 0
jne 0x4b5190
mov ecx, dword [esp + 0x24]
mov dword [ebx + esi*4], ecx
mov ecx, dword [esp + 0x18]
mov esi, dword [esp + 0x14]
add ecx, 1
cmp ecx, dword [edi + 8]
mov dword [esp + 0x18], ecx
jb 0x4b5166
mov edx, dword [edi + 0x10]
mov eax, dword [edi]
mov ecx, dword [edx + 8]
push eax
call ecx
mov dl, byte [esp + 0x13]
mov byte [edi + 4], dl
mov edx, dword [esp + 0x14]
mov dword [edi + 8], esi
mov esi, edx
and esi, ebp
add esp, 4
mov dword [edi], ebx
xor al, al
cmp dword [ebx + esi*4], 0
je 0x4b5247
nop
test al, al
jne 0x4b522c
mov ecx, dword [esp + 0x1c]
mov eax, ebp
not eax
add ecx, 0xffffffff
and eax, edx
shr eax, cl
mov ecx, ebp
shr ecx, 2
and al, cl
or al, 1
movzx ecx, al
cmp esi, ecx
jae 0x4b523d
mov ebx, dword [esp + 0x14]
sub ebx, ecx
add esi, ebx
jmp 0x4b523f
sub esi, ecx
mov ecx, dword [edi]
cmp dword [ecx + esi*4], 0
jne 0x4b5210
mov edx, dword [edi + 0x10]
mov ebx, dword [esp + 0x30]
mov eax, dword [edx]
push ebx
call eax
mov ecx, dword [edi]
mov dword [ecx + esi*4], eax
mov edx, dword [edi]
lea eax, [edx + esi*4]
add esp, 4
cmp dword [eax], 0
je 0x4b4ff8
mov eax, dword [eax]
push ebx
push 0
push eax
call fcn.005185b0
mov ecx, dword [edi]
mov edx, dword [ecx + esi*4]
mov eax, dword [esp + 0x38]
add esp, 0xc
mov dword [edx], eax
mov ecx, dword [edi]
add dword [edi + 0xc], 1
mov eax, dword [ecx + esi*4]
pop esi
pop ebp
pop ebx
add esp, 0x1c
ret