Function at 0x581bec
Capabilities:
Encrypt data using rc4 ksa

Disassembly:
push ebp
mov ebp, esp
add esp, 0xfffffff4
push ebx
push esi
push edi
mov dword [ebp - 4], ecx
mov ebx, edx
mov edi, eax
mov esi, dword [ebp + 8]
cmp byte [0x654c7c], 0
je 0x581c69
test esi, esi
je 0x581c69
cmp dword [esi + 0x434], 0
je 0x581c69
mov eax, esi
call fcn.0057b2d4
call fcn.005a3f9c
test al, al
je 0x581c69
mov eax, esi
call fcn.0057b2fc
call fcn.005a3f9c
test al, al
je 0x581c69
xor eax, eax
mov al, byte [ebp + 0x10]
push eax
push 0
push 0
push edi
mov eax, dword [ebp - 4]
push eax
mov eax, dword [ebp + 0xc]
push eax
mov eax, esi
call fcn.0057b2fc
push eax
mov eax, esi
call fcn.0057b2d4
xor ecx, ecx
mov cl, bl
pop edx
call fcn.005a4090
test al, al
jne case.0x581c76.5
xor eax, eax
mov al, bl
cmp eax, 7
ja case.0x581c76.5
jmp dword [eax*4 + 0x581c7d]
mov al, byte [ebp + 0x10]
dec al
jne case.0x581c76.5
mov ecx, dword [ebp + 0xc]
mov edx, edi
mov eax, dword [ebp - 4]
call fcn.00568170
jmp case.0x581c76.5
mov al, byte [ebp + 0x10]
dec al
jne case.0x581c76.5
mov eax, edi
mov ebx, dword [ebp - 4]
mov esi, dword [ebp + 0xc]
dec esi
test esi, esi
jl case.0x581c76.5
inc esi
movzx edx, word [eax]
shr edx, 8
mov byte [ebx + 2], dl
movzx edx, word [eax + 2]
shr edx, 8
mov byte [ebx + 1], dl
movzx edx, word [eax + 4]
shr edx, 8
mov byte [ebx], dl
add ebx, 3
add eax, 6
dec esi
jne 0x581cd7
jmp case.0x581c76.5
mov al, byte [ebp + 0x10]
dec al
jne case.0x581c76.5
mov eax, edi
mov ebx, dword [ebp - 4]
mov esi, dword [ebp + 0xc]
dec esi
test esi, esi
jl case.0x581c76.5
inc esi
mov dl, byte [eax]
and dl, 0xff
mov byte [ebx + 2], dl
mov dl, byte [eax + 2]
and dl, 0xff
mov byte [ebx + 1], dl
mov dl, byte [eax + 4]
and dl, 0xff
mov byte [ebx], dl
add ebx, 3
add eax, 6
dec esi
jne 0x581d1e
jmp case.0x581c76.5
mov al, byte [ebp + 0x10]
dec al
je 0x581e2f
dec al
je 0x581d61
sub al, 2
je 0x581d92
dec al
je 0x581dd1
jmp case.0x581c76.5
mov ebx, edi
mov edi, dword [ebp - 4]
mov esi, dword [ebp + 0xc]
dec esi
test esi, esi
jl case.0x581c76.5
inc esi
mov al, byte [ebx + 2]
shl eax, 0x10
mov ax, word [ebx]
push eax
call fcn.00581b64
mov dword [edi], eax
add ebx, 3
add edi, 4
dec esi
jne 0x581d73
jmp case.0x581c76.5
mov ebx, edi
mov edi, dword [ebp - 4]
mov esi, dword [ebp + 0xc]
dec esi
test esi, esi
jl case.0x581c76.5
inc esi
mov al, byte [ebx + 2]
shl eax, 0x10
mov ax, word [ebx]
push eax
lea eax, [ebp - 0xc]
call fcn.005969a4
mov ax, word [ebp - 0xc]
mov word [edi], ax
mov al, byte [ebp - 0xa]
mov byte [edi + 2], al
add ebx, 3
add edi, 3
dec esi
jne 0x581da4
jmp case.0x581c76.5
mov ebx, edi
mov eax, dword [ebp - 4]
mov dword [ebp - 8], eax
mov esi, dword [ebp + 0xc]
dec esi
test esi, esi
jl case.0x581c76.5
inc esi
mov ecx, ebx
xor eax, eax
mov al, byte [ecx + 2]
mov edx, dword [0x64f17c]
imul dword [edx]
xor edx, edx
mov dl, byte [ecx + 1]
mov edi, dword [0x64f0ac]
imul edx, dword [edi]
add eax, edx
xor edx, edx
mov dl, byte [ecx]
mov ecx, dword [0x64ed20]
imul edx, dword [ecx]
add eax, edx
mov ecx, 0x64
cdq
idiv ecx
mov edx, dword [ebp - 8]
mov byte [edx], al
add ebx, 3
inc dword [ebp - 8]
dec esi
jne 0x581de6
jmp case.0x581c76.5
mov ecx, dword [ebp + 0xc]
lea ecx, [ecx + ecx*2]
mov edx, edi
mov eax, dword [ebp - 4]
call fcn.00407e40
jmp case.0x581c76.5
mov al, byte [ebp + 0x10]
dec al
jne case.0x581c76.5
mov ebx, dword [ebp - 4]
mov esi, dword [ebp + 0xc]
dec esi
test esi, esi
jl case.0x581c76.5
inc esi
lea edx, [ebp - 0xc]
mov eax, dword [edi]
call fcn.00581b0c
mov ax, word [ebp - 0xc]
mov word [ebx], ax
mov al, byte [ebp - 0xa]
mov byte [ebx + 2], al
add ebx, 3
add edi, 4
dec esi
jne 0x581e5f
jmp case.0x581c76.5
mov al, byte [ebp + 0x10]
dec al
jne case.0x581c76.5
mov ebx, dword [ebp - 4]
mov esi, dword [ebp + 0xc]
dec esi
test esi, esi
jl case.0x581c76.5
inc esi
mov eax, edi
mov dl, 0xff
sub dl, byte [eax]
mov byte [eax], dl
mov dl, 0xff
sub dl, byte [eax + 1]
mov byte [eax + 1], dl
mov dl, 0xff
sub dl, byte [eax + 2]
mov byte [eax + 2], dl
mov dl, 0xff
sub dl, byte [eax + 3]
mov byte [eax + 3], dl
lea edx, [ebp - 0xc]
mov eax, dword [edi]
call fcn.00581b0c
mov ax, word [ebp - 0xc]
mov word [ebx], ax
mov al, byte [ebp - 0xa]
mov byte [ebx + 2], al
add ebx, 3
add edi, 4
add edi, 2
dec esi
jne 0x581e9f
jmp case.0x581c76.5
mov al, byte [ebp + 0x10]
dec al
jne case.0x581c76.5
mov ebx, dword [ebp - 4]
mov esi, dword [ebp + 0xc]
dec esi
test esi, esi
jl case.0x581c76.5
inc esi
mov al, byte [edi + 2]
shl eax, 0x10
mov ax, word [edi]
push eax
lea eax, [ebp - 0xc]
call fcn.00596e18
mov ax, word [ebp - 0xc]
mov word [ebx], ax
mov al, byte [ebp - 0xa]
mov byte [ebx + 2], al
add edi, 3
add ebx, 3
dec esi
jne 0x581ef7
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret 0xc