Function at 0x437af0
Capabilities:
Encode data using xor
Encrypt data using rc4 prga

Disassembly:
push ebp
push ebx
push edi
push esi
sub esp, 0x1c
mov dword [esp + 4], 0x484b4a4d
mov byte [esp + 8], 0
mov dword [esp], 0
mov eax, dword [esp]
cmp eax, 4
ja 0x437b65
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
mov eax, dword [esp]
mov ecx, dword [esp]
movzx ecx, byte [esp + ecx + 4]
lea edx, [eax + ecx]
add edx, 0x5eea0bf3
add eax, 0xf3
and eax, ecx
mov ecx, edx
not ecx
and ecx, eax
add ecx, eax
not eax
and eax, edx
sub eax, ecx
mov dword [esp + 0x10], eax
mov eax, dword [esp + 0x10]
add al, 0x41
mov ecx, dword [esp]
mov byte [esp + ecx + 4], al
inc dword [esp]
mov eax, dword [esp]
cmp eax, 5
jb 0x437b20
mov ebp, dword [esp + 0x34]
mov esi, dword [esp + 4]
mov eax, dword [0x442de0]
test eax, eax
je 0x437bbb
xor ecx, ecx
mov edx, dword [0x442de4]
nop
nop
cmp dword [edx + ecx*8], 0x84aa3bd1
je 0x437b90
inc ecx
cmp eax, ecx
jne 0x437b80
jmp 0x437bbb
mov eax, dword [edx + ecx*8 + 4]
cmp eax, esi
je 0x437bbb
lea ecx, [esp + 0x14]
push ecx
push 0
push 0
push 0
push ebp
push dword [esp + 0x44]
push 6
push dword [0x442de8]
push eax
call fcn.00435090
add esp, 0x24
mov esi, eax
mov dword [esp + 4], 0x94a4b91
mov dword [esp + 8], 0
mov dword [esp], 0
mov eax, dword [esp]
cmp eax, 7
ja 0x437c0e
nop
nop
nop
nop
nop
nop
mov eax, dword [esp]
mov ecx, dword [esp]
movzx ecx, byte [esp + ecx + 4]
add eax, 0x6f520613
xor eax, ecx
mov dword [esp + 0x10], eax
mov eax, dword [esp + 0x10]
add al, 0xa1
mov ecx, dword [esp]
mov byte [esp + ecx + 4], al
inc dword [esp]
mov eax, dword [esp]
cmp eax, 8
jb 0x437be0
cmp esi, dword [esp + 4]
jne 0x437e02
push dword [esp + 0x14]
call fcn.00433110
add esp, 4
mov dword [esp + 0xc], eax
mov ecx, dword [esp + 0x14]
mov dword [esp + 4], 0x484b4a4d
mov byte [esp + 8], 0
mov dword [esp], 0
mov edx, dword [esp]
cmp edx, 4
ja 0x437c97
nop
nop
nop
nop
nop
nop
nop
nop
mov edx, dword [esp]
mov esi, dword [esp]
movzx esi, byte [esp + esi + 4]
lea edi, [edx + esi]
add edi, 0x5eea0bf3
add edx, 0xf3
and edx, esi
mov esi, edi
not esi
and esi, edx
add esi, edx
not edx
and edx, edi
sub edx, esi
mov dword [esp + 0x10], edx
mov edx, dword [esp + 0x10]
add dl, 0x41
mov esi, dword [esp]
mov byte [esp + esi + 4], dl
inc dword [esp]
mov edx, dword [esp]
cmp edx, 5
jb 0x437c50
mov edi, dword [esp + 0x3c]
mov esi, dword [esp + 4]
mov edx, dword [0x442de0]
test edx, edx
je 0x437d01
mov eax, edi
xor edi, edi
mov ebx, dword [0x442de4]
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
cmp dword [ebx + edi*8], 0x84aa3bd1
je 0x437cd2
inc edi
cmp edx, edi
jne 0x437cc0
mov edi, eax
jmp 0x437d01
mov edx, dword [ebx + edi*8 + 4]
cmp edx, esi
mov edi, eax
je 0x437d01
lea esi, [esp + 0x14]
push esi
push ecx
mov eax, dword [esp + 0x14]
push eax
push 0
push ebp
push dword [esp + 0x44]
push 6
push dword [0x442de8]
push edx
call fcn.00435090
add esp, 0x24
mov esi, eax
test edi, edi
je 0x437df6
test esi, esi
js 0x437df6
mov ecx, dword [esp + 0x38]
test ecx, ecx
je 0x437deb
mov eax, dword [esp + 0xc]
mov edx, dword [eax + 0xc]
shr edx, 1
mov eax, dword [edi]
cmp eax, edx
jb 0x437d2e
mov eax, edx
test eax, eax
je 0x437de6
mov edx, dword [esp + 0xc]
add edx, 0x10
mov ebx, eax
and ebx, 3
je 0x437d7c
mov dword [esp + 0x18], eax
xor edi, edi
nop
nop
nop
nop
nop
nop
movzx ebp, word [edx]
xor eax, eax
test bp, bp
setne al
lea edx, [edx + eax*2]
mov word [ecx], bp
add ecx, 2
inc edi
cmp ebx, edi
jne 0x437d50
mov eax, dword [esp + 0x18]
mov ebp, eax
sub ebp, edi
mov edi, dword [esp + 0x3c]
cmp eax, 4
jae 0x437d90
jmp 0x437de6
mov ebp, eax
cmp eax, 4
jb 0x437de6
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
movzx eax, word [edx]
xor ebx, ebx
test ax, ax
setne bl
lea edi, [edx + ebx*2]
mov word [ecx], ax
movzx eax, word [edx + ebx*2]
xor edx, edx
test ax, ax
setne dl
lea ebx, [edi + edx*2]
mov word [ecx + 2], ax
movzx eax, word [edi + edx*2]
xor edx, edx
test ax, ax
setne dl
lea edi, [ebx + edx*2]
mov word [ecx + 4], ax
movzx eax, word [ebx + edx*2]
xor edx, edx
test ax, ax
setne dl
mov word [ecx + 6], ax
add ecx, 8
lea edx, [edi + edx*2]
add ebp, 0xfffffffc
jne 0x437d90
mov edi, dword [esp + 0x3c]
mov word [ecx], 0
mov eax, dword [esp + 0xc]
mov eax, dword [eax + 0xc]
shr eax, 1
mov dword [edi], eax
push dword [esp + 0xc]
call fcn.00433180
add esp, 4
mov eax, esi
add esp, 0x1c
pop esi
pop edi
pop ebx
pop ebp
ret