Function at 0x4374f9
Capabilities:
Encode data using xor
Encrypt data using rc4 ksa

Disassembly:
push ebp
mov ebp, esp
xor edx, edx
cmp dword [esi + 0xe8], edx
je 0x437512
mov eax, dword [esi + 0x84]
sub eax, dword [ebp + 0xc]
dec eax
jmp 0x437515
mov eax, dword [ebp + 0xc]
mov ecx, dword [esi + 0xd4]
push ebx
push edi
mov edi, dword [esi + 0xcc]
imul edi, eax
mov eax, ecx
imul eax, dword [ebp + 8]
add edi, eax
add edi, dword [esi + 0xc8]
cmp dword [esi + 0xe0], edx
jne 0x43795e
cmp dword [esi + 0xe4], edx
jne 0x43795e
mov eax, dword [esi + 0xd8]
test al, 2
je 0x437589
cmp dword [ebp + 0x10], edx
je 0x437980
mov al, byte [esi + 0xf0]
xor byte [edi + 2], al
mov al, byte [esi + 0xf4]
xor byte [edi + 1], al
mov al, byte [esi + 0xf8]
xor byte [edi], al
add edi, dword [esi + 0xd4]
dec dword [ebp + 0x10]
jne 0x43755f
jmp 0x437980
test eax, 0x100
je 0x4375c9
cmp dword [ebp + 0x10], edx
je 0x437980
mov al, byte [esi + 0xf0]
mov byte [edi + 2], al
mov al, byte [esi + 0xf4]
mov byte [edi + 1], al
mov al, byte [esi + 0xf8]
mov byte [edi], al
mov al, byte [esi + 0xfc]
mov byte [edi + 3], al
add edi, 4
dec dword [ebp + 0x10]
jne 0x437599
jmp 0x437980
test al, 8
je 0x4375f7
cmp ecx, 4
jne 0x437980
cmp dword [ebp + 0x10], edx
je 0x437980
add edi, 3
mov al, byte [esi + 0xfc]
mov byte [edi], al
add edi, 4
dec dword [ebp + 0x10]
jne 0x4375e2
jmp 0x437980
test al, 0x10
je 0x4377ab
cmp ecx, 4
jne 0x43774b
cmp dword [ebp + 0x10], edx
je 0x437980
mov ebx, dword [esi + 0xfc]
movzx edx, byte [edi + 3]
test ebx, ebx
jne 0x437625
movzx eax, byte [edi + 2]
jmp 0x437664
test edx, edx
jne 0x437634
mov eax, dword [esi + 0xf0]
cdq
idiv ebx
jmp 0x437664
movzx eax, byte [edi + 2]
imul ebx, ebx, 0xff
mov ecx, dword [esi + 0x100]
imul eax, ecx
imul eax, edx
mov edx, dword [esi + 0xf0]
imul edx, edx, 0xff
add eax, edx
movzx edx, byte [edi + 3]
imul ecx, edx
cdq
add ecx, ebx
idiv ecx
mov byte [edi + 2], al
mov ebx, dword [esi + 0xfc]
test ebx, ebx
jne 0x437677
movzx eax, byte [edi + 1]
jmp 0x4376ba
movzx edx, byte [edi + 3]
test edx, edx
jne 0x43768a
mov eax, dword [esi + 0xf4]
cdq
idiv ebx
jmp 0x4376ba
movzx eax, byte [edi + 1]
imul ebx, ebx, 0xff
mov ecx, dword [esi + 0x100]
imul eax, ecx
imul eax, edx
mov edx, dword [esi + 0xf4]
imul edx, edx, 0xff
add eax, edx
movzx edx, byte [edi + 3]
imul ecx, edx
cdq
add ecx, ebx
idiv ecx
mov byte [edi + 1], al
mov ebx, dword [esi + 0xfc]
test ebx, ebx
jne 0x4376cc
movzx eax, byte [edi]
jmp 0x437712
movzx eax, byte [edi + 3]
test eax, eax
jne 0x4376df
mov eax, dword [esi + 0xf8]
cdq
idiv ebx
jmp 0x437712
movzx eax, byte [edi]
imul ebx, ebx, 0xff
mov ecx, dword [esi + 0x100]
movzx edx, byte [edi + 3]
imul eax, ecx
imul eax, edx
mov edx, dword [esi + 0xf8]
imul edx, edx, 0xff
add eax, edx
movzx edx, byte [edi + 3]
imul ecx, edx
cdq
add ecx, ebx
idiv ecx
movzx ecx, byte [edi + 3]
mov byte [edi], al
mov eax, dword [esi + 0x100]
imul eax, ecx
mov ecx, dword [esi + 0xfc]
imul ecx, ecx, 0xff
add eax, ecx
cdq
mov ecx, 0xff
idiv ecx
add edi, 4
dec dword [ebp + 0x10]
mov byte [edi - 1], al
jne 0x437611
jmp 0x437980
cmp dword [ebp + 0x10], edx
je 0x437980
movzx eax, byte [edi + 2]
imul eax, dword [esi + 0x100]
add eax, dword [esi + 0xf0]
mov ecx, 0xff
cdq
mov ebx, ecx
idiv ebx
mov byte [edi + 2], al
movzx eax, byte [edi + 1]
imul eax, dword [esi + 0x100]
add eax, dword [esi + 0xf4]
cdq
idiv ebx
mov byte [edi + 1], al
movzx eax, byte [edi]
imul eax, dword [esi + 0x100]
add eax, dword [esi + 0xf8]
cdq
idiv ecx
mov byte [edi], al
add edi, 3
dec dword [ebp + 0x10]
jne 0x437754
jmp 0x437980
test al, 0x20
je 0x437932
cmp ecx, 4
jne 0x4378d5
cmp dword [ebp + 0x10], edx
je 0x437980
mov ebx, dword [esi + 0xfc]
movzx edx, byte [edi + 3]
test ebx, ebx
jne 0x4377d9
movzx eax, byte [edi + 2]
jmp 0x437818
test edx, edx
jne 0x4377e8
mov eax, dword [esi + 0xf0]
cdq
idiv ebx
jmp 0x437818
movzx eax, byte [edi + 2]
imul ebx, ebx, 0xff
mov ecx, dword [esi + 0x100]
imul eax, ecx
imul eax, edx
mov edx, dword [esi + 0xf0]
imul edx, edx, 0xff
add eax, edx
movzx edx, byte [edi + 3]
imul ecx, edx
cdq
add ecx, ebx
idiv ecx
mov byte [edi + 2], al
mov ebx, dword [esi + 0xfc]
test ebx, ebx
jne 0x43782b
movzx eax, byte [edi + 1]
jmp 0x43786e
movzx edx, byte [edi + 3]
test edx, edx
jne 0x43783e
mov eax, dword [esi + 0xf4]
cdq
idiv ebx
jmp 0x43786e
movzx eax, byte [edi + 1]
imul ebx, ebx, 0xff
mov ecx, dword [esi + 0x100]
imul eax, ecx
imul eax, edx
mov edx, dword [esi + 0xf4]
imul edx, edx, 0xff
add eax, edx
movzx edx, byte [edi + 3]
imul ecx, edx
cdq
add ecx, ebx
idiv ecx
mov byte [edi + 1], al
mov ebx, dword [esi + 0xfc]
test ebx, ebx
jne 0x437880
movzx eax, byte [edi]
jmp 0x4378c2
movzx edx, byte [edi + 3]
test edx, edx
jne 0x437893
mov eax, dword [esi + 0xf8]
cdq
idiv ebx
jmp 0x4378c2
movzx eax, byte [edi]
imul ebx, ebx, 0xff
mov ecx, dword [esi + 0x100]
imul eax, ecx
imul eax, edx
mov edx, dword [esi + 0xf8]
imul edx, edx, 0xff
add eax, edx
movzx edx, byte [edi + 3]
imul ecx, edx
cdq
add ecx, ebx
idiv ecx
mov byte [edi], al
add edi, 4
dec dword [ebp + 0x10]
jne 0x4377c5
jmp 0x437980
cmp dword [ebp + 0x10], edx
je 0x437980
movzx eax, byte [edi + 2]
imul eax, dword [esi + 0x100]
add eax, dword [esi + 0xf0]
mov ecx, 0xff
cdq
mov ebx, ecx
idiv ebx
mov byte [edi + 2], al
movzx eax, byte [edi + 1]
imul eax, dword [esi + 0x100]
add eax, dword [esi + 0xf4]
cdq
idiv ebx
mov byte [edi + 1], al
movzx eax, byte [edi]
imul eax, dword [esi + 0x100]
add eax, dword [esi + 0xf8]
cdq
idiv ecx
mov byte [edi], al
add edi, 3
dec dword [ebp + 0x10]
jne 0x4378de
jmp 0x437980
cmp dword [ebp + 0x10], edx
je 0x437980
mov al, byte [esi + 0xf0]
mov byte [edi + 2], al
mov al, byte [esi + 0xf4]
mov byte [edi + 1], al
mov al, byte [esi + 0xf8]
mov byte [edi], al
add edi, dword [esi + 0xd4]
dec dword [ebp + 0x10]
jne 0x437937
jmp 0x437980
cmp dword [ebp + 0x10], edx
je 0x437980
push dword [ebp + 0xc]
mov eax, esi
push dword [ebp + 8]
call fcn.00437035
add edi, dword [esi + 0xd4]
inc dword [ebp + 8]
dec dword [ebp + 0x10]
pop ecx
pop ecx
jne 0x437963
pop edi
pop ebx
pop ebp
ret