Function at 0x40b170
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 0x40b185
push esi
call fcn.0040b480
jmp 0x40b18b
push esi
call fcn.0040b920
add esp, 4
lea ebp, [esi + 0x9272]
cmp ebp, dword [esi + 0x28]
jae 0x40b413
mov ebx, 1
jmp 0x40b1be
mov ebx, dword [esp]
shr ebx, 1
cmp ebp, dword [esi + 0x28]
jae 0x40b419
cmp ebx, 1
jne 0x40b1ce
movzx ebx, byte [ebp]
inc ebp
or ebx, 0x100
test bl, 1
jne 0x40b240
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 0x40b221
jmp 0x40b1b3
shr edx, 8
mov dword [esi + 0x48], edx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x40b1b3
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x40b210
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x40b210
mov dword [esp], ebx
movzx eax, byte [ebp]
movzx ecx, byte [ebp + 1]
mov dword [esp + 4], ecx
mov edi, eax
movzx eax, word [eax + eax + 0x44802e]
movzx edx, word [esi + eax*2 + 0x8852]
mov ecx, dword [esi + 0x44]
shl edx, cl
movzx ebx, byte [esi + eax + 0x8f12]
or edx, dword [esi + 0x48]
add ebx, ecx
mov dword [esp + 0xc], ebp
movzx ebp, byte [ebp + 2]
mov dword [esi + 0x48], edx
mov dword [esi + 0x44], ebx
cmp ebx, 8
jae 0x40b2fc
mov eax, ebx
movzx ebx, byte [edi + 0x448288]
and edi, dword [ebx*4 + 0x448244]
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 0x40b335
mov dword [esp + 8], edx
mov edx, ebp
shl edx, 8
add edx, dword [esp + 4]
cmp edx, 0x200
jb 0x40b350
lea ecx, [ebp + 0x447fae]
lea ebp, [ebp + 0x448588]
jmp 0x40b35c
shr edx, 8
mov dword [esi + 0x48], edx
mov eax, ebx
and eax, 0xfffffff7
add eax, eax
xor ebx, 8
sub eax, ebx
mov dword [esi + 0x44], eax
mov ebx, eax
cmp eax, 7
jbe 0x40b288
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x40b2e0
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ebx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x40b2e0
shr edx, 8
mov dword [esi + 0x48], edx
add eax, 0xfffffff8
mov dword [esi + 0x44], eax
cmp eax, 7
jbe 0x40b2af
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x40b320
lea eax, [ecx + 1]
mov dword [esi + 0x30], eax
mov byte [ecx], dl
mov eax, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x40b320
lea ecx, [edx + 0x447dae]
lea ebp, [edx + 0x448388]
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 0x40b3fa
mov ebp, dword [esp + 0xc]
add ebp, 3
and edx, dword [eax*4 + 0x448244]
shl edx, cl
or edx, ebx
mov dword [esi + 0x48], edx
add ecx, eax
mov dword [esi + 0x44], ecx
cmp ecx, 8
jb 0x40b1b0
mov ebx, dword [esp]
jmp 0x40b3c5
shr edx, 8
mov dword [esi + 0x48], edx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x40b1b3
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x40b3b0
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x40b3b0
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 0x40b388
mov ebp, dword [esi + 0x30]
cmp ebp, dword [esi + 0x34]
jae 0x40b3e0
lea ecx, [ebp + 1]
mov dword [esi + 0x30], ecx
mov byte [ebp], bl
mov ecx, dword [esi + 0x44]
mov ebx, dword [esi + 0x48]
jmp 0x40b3e0
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 0x40b461
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 edi, 0xfffffff8
mov dword [esi + 0x44], edi
cmp edi, 7
jbe 0x40b438
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x40b450
lea edx, [ecx + 1]
mov dword [esi + 0x30], edx
mov byte [ecx], al
mov edi, dword [esi + 0x44]
mov eax, dword [esi + 0x48]
jmp 0x40b450