Function at 0x407d50
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 0x407d65
push esi
call fcn.00408040
jmp 0x407d6b
push esi
call fcn.004084d0
add esp, 4
lea ebp, [esi + 0x9272]
cmp ebp, dword [esi + 0x28]
jae 0x407fca
mov ebx, 1
jmp 0x407d9e
mov ebx, dword [esp]
shr ebx, 1
cmp ebp, dword [esi + 0x28]
jae 0x407fd0
cmp ebx, 1
jne 0x407dae
movzx ebx, byte [ebp]
inc ebp
or ebx, 0x100
test bl, 1
jne 0x407e20
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 0x407e01
jmp 0x407d93
shr edx, 8
mov dword [esi + 0x48], edx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x407d93
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x407df0
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x407df0
movzx eax, byte [ebp]
mov edi, eax
movzx eax, word [eax + eax + 0x441bea]
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 0x407ec1
mov dword [esp], ebx
movzx ebx, byte [edi + 0x441e44]
and edi, dword [ebx*4 + 0x441e00]
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 0x407ef1
mov dword [esp + 8], edx
mov edx, ebp
shl edx, 8
add edx, dword [esp + 4]
cmp edx, 0x200
jb 0x407f10
lea ecx, [ebp + 0x441b6a]
lea ebp, [ebp + 0x442144]
jmp 0x407f1c
shr edx, 8
mov dword [esi + 0x48], edx
add eax, 0xfffffff8
mov dword [esi + 0x44], eax
cmp eax, 7
jbe 0x407e63
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x407eb0
lea eax, [ecx + 1]
mov dword [esi + 0x30], eax
mov byte [ecx], dl
mov eax, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x407eb0
shr edx, 8
mov dword [esi + 0x48], edx
add eax, 0xfffffff8
mov dword [esi + 0x44], eax
cmp eax, 7
jbe 0x407e89
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x407ee0
lea eax, [ecx + 1]
mov dword [esi + 0x30], eax
mov byte [ecx], dl
mov eax, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x407ee0
lea ecx, [edx + 0x44196a]
lea ebp, [edx + 0x441f44]
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 0x407fb1
mov ebp, dword [esp + 0xc]
add ebp, 3
and edx, dword [eax*4 + 0x441e00]
shl edx, cl
or edx, ebx
mov dword [esi + 0x48], edx
add ecx, eax
mov dword [esi + 0x44], ecx
cmp ecx, 8
jb 0x407d90
mov ebx, dword [esp]
jmp 0x407f85
shr edx, 8
mov dword [esi + 0x48], edx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x407d93
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x407f70
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x407f70
shr ebx, 8
mov dword [esi + 0x48], ebx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x407f48
mov ebp, dword [esi + 0x30]
cmp ebp, dword [esi + 0x34]
jae 0x407fa0
lea ecx, [ebp + 1]
mov dword [esi + 0x30], ecx
mov byte [ebp], bl
mov ecx, dword [esi + 0x44]
mov ebx, dword [esi + 0x48]
jmp 0x407fa0
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
mov edx, ecx
and edx, edi
xor ecx, edi
lea ecx, [ecx + edx*2]
mov dword [esi + 0x44], ecx
cmp ecx, 8
jae 0x408021
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
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x407ff6
mov edx, dword [esi + 0x30]
cmp edx, dword [esi + 0x34]
jae 0x408010
lea ecx, [edx + 1]
mov dword [esi + 0x30], ecx
mov byte [edx], al
mov ecx, dword [esi + 0x44]
mov eax, dword [esi + 0x48]
jmp 0x408010