Function at 0x4063f0
Capabilities:
Encrypt data using rc4 prga

Disassembly:
push ebp
push ebx
push edi
push esi
sub esp, 0x10
mov esi, ecx
test edx, edx
je 0x406405
push esi
call fcn.00406710
jmp 0x40640b
push esi
call fcn.00406ba0
add esp, 4
lea ebp, [esi + 0x9272]
cmp ebp, dword [esi + 0x28]
jae 0x406693
mov ebx, 1
jmp 0x40643e
mov ebx, dword [esp]
shr ebx, 1
cmp ebp, dword [esi + 0x28]
jae 0x406699
cmp ebx, 1
jne 0x40644e
movzx ebx, byte [ebp]
or ebx, 0x100
inc ebp
test bl, 1
jne 0x4064c0
movzx edi, byte [ebp]
movzx edx, word [esi + edi*2 + 0x8852]
mov eax, dword [esi + 0x44]
mov ecx, eax
shl edx, cl
inc ebp
movzx ecx, byte [esi + edi + 0x8f12]
or edx, dword [esi + 0x48]
mov dword [esi + 0x48], edx
add ecx, eax
mov dword [esi + 0x44], ecx
cmp ecx, 8
jae 0x4064a1
jmp 0x406433
shr edx, 8
mov dword [esi + 0x48], edx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x406433
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x406490
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x406490
movzx eax, byte [ebp]
mov edi, eax
movzx eax, word [eax + eax + 0x442bea]
movzx edx, word [esi + eax*2 + 0x8852]
mov ecx, dword [esi + 0x44]
shl edx, cl
movzx eax, byte [esi + eax + 0x8f12]
add eax, ecx
movzx ecx, byte [ebp + 1]
mov dword [esp + 4], ecx
or edx, dword [esi + 0x48]
mov dword [esp + 0xc], ebp
movzx ebp, byte [ebp + 2]
mov dword [esi + 0x48], edx
mov dword [esi + 0x44], eax
cmp eax, 8
jae 0x40657a
mov dword [esp], ebx
movzx ebx, byte [edi + 0x442e44]
and edi, dword [ebx*4 + 0x442e00]
mov ecx, eax
shl edi, cl
or edi, edx
mov edx, edi
mov dword [esi + 0x48], edi
add eax, ebx
mov dword [esi + 0x44], eax
cmp eax, 8
jae 0x4065b5
mov dword [esp + 8], edx
mov edx, ebp
shl edx, 8
add edx, dword [esp + 4]
cmp edx, 0x200
jb 0x4065d0
lea ecx, [ebp + 0x442b6a]
lea ebp, [ebp + 0x443144]
jmp 0x4065dc
shr edx, 8
mov dword [esi + 0x48], edx
mov ecx, eax
not ecx
and ecx, 8
and eax, 0xfffffff7
sub eax, ecx
mov dword [esi + 0x44], eax
cmp eax, 7
jbe 0x406503
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x406560
lea eax, [ecx + 1]
mov dword [esi + 0x30], eax
mov byte [ecx], dl
mov eax, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x406560
shr edx, 8
mov dword [esi + 0x48], edx
add eax, 0xfffffff8
mov dword [esi + 0x44], eax
cmp eax, 7
jbe 0x40652d
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x4065a0
lea eax, [ecx + 1]
mov dword [esi + 0x30], eax
mov byte [ecx], dl
mov eax, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x4065a0
lea ecx, [edx + 0x44296a]
lea ebp, [edx + 0x442f44]
movzx edi, byte [ecx]
movzx ebx, word [esi + edi*2 + 0x8a92]
mov ecx, eax
shl ebx, cl
or ebx, dword [esp + 8]
movzx ecx, byte [esi + edi + 0x9032]
add ecx, eax
movzx eax, byte [ebp]
mov dword [esi + 0x48], ebx
mov dword [esi + 0x44], ecx
cmp ecx, 8
jae 0x40667a
mov ebp, dword [esp + 0xc]
add ebp, 3
and edx, dword [eax*4 + 0x442e00]
shl edx, cl
or edx, ebx
mov dword [esi + 0x48], edx
add ecx, eax
mov dword [esi + 0x44], ecx
cmp ecx, 8
jb 0x406430
mov ebx, dword [esp]
jmp 0x406645
shr edx, 8
mov dword [esi + 0x48], edx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x406433
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x406630
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x406630
shr ebx, 8
mov dword [esi + 0x48], ebx
mov edi, ecx
not edi
and edi, 8
and ecx, 0xfffffff7
sub ecx, edi
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x406608
mov ebp, dword [esi + 0x30]
cmp ebp, dword [esi + 0x34]
jae 0x406660
lea ecx, [ebp + 1]
mov dword [esi + 0x30], ecx
mov byte [ebp], bl
mov ecx, dword [esi + 0x44]
mov ebx, dword [esi + 0x48]
jmp 0x406660
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
movzx eax, word [esi + 0x8a52]
movzx edi, byte [esi + 0x9012]
shl eax, cl
or eax, edx
mov dword [esi + 0x48], eax
add edi, ecx
mov dword [esi + 0x44], edi
cmp edi, 8
jae 0x4066ea
mov ecx, dword [esi + 0x30]
xor eax, eax
cmp ecx, dword [esi + 0x34]
setb al
add esp, 0x10
pop esi
pop edi
pop ebx
pop ebp
ret
shr eax, 8
mov dword [esi + 0x48], eax
mov ecx, edi
xor ecx, 8
and edi, 0xfffffff7
add edi, edi
sub edi, ecx
mov dword [esi + 0x44], edi
cmp edi, 7
jbe 0x4066b8
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x4066d0
lea edx, [ecx + 1]
mov dword [esi + 0x30], edx
mov byte [ecx], al
mov edi, dword [esi + 0x44]
mov eax, dword [esi + 0x48]
jmp 0x4066d0