Function at 0x497700
Capabilities:
Encrypt data using rc4 prga

Disassembly:
mov ecx, dword fs:[0x14]
mov ecx, dword [ecx]
cmp esp, dword [ecx + 8]
jbe 0x497a0b
sub esp, 0x30
mov eax, dword [esp + 0x38]
mov ecx, dword [esp + 0x34]
xor edx, edx
xor ebx, ebx
xor ebp, ebp
xor esi, esi
xor edi, edi
jmp 0x49774a
dec esi
mov dword [esp + 0x38], esi
xchg esi, ebx
neg ebx
xchg esi, ebx
sar esi, 0x1f
and esi, 1
add ecx, esi
mov esi, dword [esp + 0x38]
mov esi, eax
mov eax, dword [esp + 0x38]
test eax, eax
jle 0x4979c4
mov dword [esp + 0x34], ecx
mov dword [esp + 0x38], eax
xchg edi, eax
mov byte [esp + 0x22], al
xchg edi, eax
movzx eax, byte [ecx]
mov byte [esp + 0x23], al
cmp al, 0x20
jbe 0x49795e
cmp al, 0x22
je 0x49780e
cmp al, 0x5c
jne 0x49778f
lea eax, [esi + 1]
mov esi, dword [esp + 0x38]
cmp esi, 1
jae 0x49772d
jmp 0x497a04
mov dword [esp], ebx
mov dword [esp + 4], ebp
mov dword [esp + 8], edx
mov dword [esp + 0xc], esi
call fcn.00497660
mov eax, dword [esp + 0x10]
mov ecx, dword [esp + 0x14]
mov edx, dword [esp + 0x18]
lea ebx, [ecx + 1]
cmp ebx, edx
ja 0x4977d7
movzx ebp, byte [esp + 0x23]
xchg ebp, ebx
mov byte [eax + ecx], bl
xchg ebp, ebx
mov ecx, dword [esp + 0x34]
mov esi, dword [esp + 0x38]
mov ebp, ebx
mov ebx, eax
xor eax, eax
movzx edi, byte [esp + 0x22]
jmp 0x497785
mov dword [esp + 0x28], ecx
lea ebp, [0x640f20]
mov dword [esp], ebp
mov dword [esp + 4], eax
mov dword [esp + 8], ecx
mov dword [esp + 0xc], edx
mov dword [esp + 0x10], ebx
call fcn.00438ea0
mov eax, dword [esp + 0x14]
mov ecx, dword [esp + 0x18]
mov edx, dword [esp + 0x1c]
lea ebx, [ecx + 1]
mov ecx, dword [esp + 0x28]
jmp 0x4977b6
mov dword [esp + 0x24], esi
mov dword [esp], ebx
mov dword [esp + 4], ebp
mov dword [esp + 8], edx
mov eax, esi
shr esi, 0x1f
lea ecx, [eax + esi]
sar ecx, 1
mov dword [esp + 0x2c], ecx
mov dword [esp + 0xc], ecx
call fcn.00497660
mov eax, dword [esp + 0x10]
mov ecx, dword [esp + 0x14]
mov dword [esp + 0x28], ecx
mov edx, dword [esp + 0x18]
mov ebx, dword [esp + 0x2c]
shl ebx, 1
mov ebp, dword [esp + 0x24]
cmp ebp, ebx
jne 0x497904
movzx ebx, byte [esp + 0x22]
test bl, bl
je 0x4978fa
mov ebp, dword [esp + 0x38]
cmp ebp, 1
jle 0x4978f4
mov esi, dword [esp + 0x34]
cmp byte [esi + 1], 0x22
jne 0x4978ea
lea edi, [ecx + 1]
cmp edi, edx
ja 0x4978aa
movzx ebx, byte [esp + 0x23]
mov byte [eax + ecx], bl
lea ecx, [esi + 1]
lea ebx, [ebp - 1]
movzx ebp, byte [esp + 0x22]
xor ebp, 1
mov esi, ebx
mov ebx, eax
xor eax, eax
mov eax, ebp
mov ebp, edi
mov edi, eax
xor eax, eax
jmp 0x497785
lea ebx, [0x640f20]
mov dword [esp], ebx
mov dword [esp + 4], eax
mov dword [esp + 8], ecx
mov dword [esp + 0xc], edx
mov dword [esp + 0x10], edi
call fcn.00438ea0
mov eax, dword [esp + 0x14]
mov ecx, dword [esp + 0x18]
mov edx, dword [esp + 0x1c]
lea edi, [ecx + 1]
mov ecx, dword [esp + 0x28]
movzx ebx, byte [esp + 0x22]
mov ebp, dword [esp + 0x38]
mov esi, dword [esp + 0x34]
jmp 0x497881
mov ebx, ebp
mov ecx, esi
mov edi, dword [esp + 0x28]
jmp 0x49788f
mov esi, dword [esp + 0x34]
jmp 0x4978ea
mov ebp, dword [esp + 0x38]
mov esi, dword [esp + 0x34]
jmp 0x4978ea
lea ebx, [ecx + 1]
cmp ebx, edx
ja 0x49792b
movzx esi, byte [esp + 0x23]
xchg esi, ebx
mov byte [eax + ecx], bl
xchg esi, ebx
mov ecx, dword [esp + 0x34]
mov edi, ebx
movzx ebp, byte [esp + 0x22]
mov ebx, dword [esp + 0x38]
jmp 0x497897
lea ebp, [0x640f20]
mov dword [esp], ebp
mov dword [esp + 4], eax
mov dword [esp + 8], ecx
mov dword [esp + 0xc], edx
mov dword [esp + 0x10], ebx
call fcn.00438ea0
mov eax, dword [esp + 0x14]
mov ecx, dword [esp + 0x18]
mov edx, dword [esp + 0x1c]
lea ebx, [ecx + 1]
mov ecx, dword [esp + 0x28]
jmp 0x49790b
cmp al, 9
jne 0x4979ba
xchg edi, eax
test al, al
xchg edi, eax
jne 0x49778f
mov dword [esp], ebx
mov dword [esp + 4], ebp
mov dword [esp + 8], edx
mov dword [esp + 0xc], esi
call fcn.00497660
mov eax, dword [esp + 0x10]
mov ecx, dword [esp + 0x14]
mov edx, dword [esp + 0x18]
mov dword [esp + 0x3c], eax
mov dword [esp + 0x40], ecx
mov dword [esp + 0x44], edx
mov eax, dword [esp + 0x38]
dec eax
mov ecx, eax
neg eax
sar eax, 0x1f
and eax, 1
mov edx, dword [esp + 0x34]
add eax, edx
mov dword [esp + 0x48], eax
mov dword [esp + 0x4c], ecx
add esp, 0x30
ret
cmp al, 0x20
je 0x497963
jmp 0x49778f
mov dword [esp], ebx
mov dword [esp + 4], ebp
mov dword [esp + 8], edx
mov dword [esp + 0xc], esi
call fcn.00497660
mov eax, dword [esp + 0x14]
mov ecx, dword [esp + 0x10]
mov edx, dword [esp + 0x18]
mov dword [esp + 0x3c], ecx
mov dword [esp + 0x40], eax
mov dword [esp + 0x44], edx
mov dword [esp + 0x48], 0
mov dword [esp + 0x4c], 0
add esp, 0x30
ret
call fcn.00427250
ud2
call fcn.0044b940
jmp fcn.00497700