Function at 0x4240c0
Capabilities:
Encrypt data using rc4 prga

Disassembly:
push ebx
mov ebx, esp
sub esp, 8
and esp, 0xfffffff8
add esp, 4
push ebp
mov ebp, dword [ebx + 4]
mov dword [esp + 4], ebp
mov ebp, esp
sub esp, 0x38
push esi
mov esi, ecx
mov ecx, dword [ebx + 0xc]
mov dword [ebp - 0x20], esi
push edi
mov edi, dword [ebx + 8]
cmp ecx, 3
jl 0x424473
mov edx, dword [ebx + 0x10]
test edx, 0xff000000
je 0x424473
test byte [esi + 0x24], 4
mov eax, dword [esi + 0x2c]
movss xmm0, dword [eax]
movss dword [ebp - 0x18], xmm0
movss xmm0, dword [eax + 4]
movss dword [ebp - 0x1c], xmm0
je 0x4243df
movss xmm0, dword [esi + 0x8c]
lea eax, [ecx + ecx]
push eax
mov dword [ebp - 0x34], eax
and edx, 0xffffff
lea eax, [ecx*8 - 6]
movss dword [ebp - 0xc], xmm0
add eax, ecx
mov dword [ebp - 0x28], edx
push eax
mov ecx, esi
call fcn.00423210
mov eax, dword [esi + 0x28]
mov edi, dword [ebx + 0xc]
movzx edx, ax
mov dword [ebp - 4], eax
lea ecx, [eax + 1]
mov dword [ebp - 0x14], edx
mov dword [ebp - 0x2c], ecx
mov ecx, 2
mov dword [ebp - 0x10], ecx
nop dword [eax]
mov eax, dword [esi + 0x38]
mov word [eax], dx
lea edx, [edx + ecx*2]
mov eax, dword [esi + 0x38]
lea ecx, [edx - 2]
mov word [eax + 2], cx
mov eax, dword [esi + 0x38]
mov ecx, dword [ebp - 0x10]
inc ecx
mov dword [ebp - 0x10], ecx
mov word [eax + 4], dx
add dword [esi + 0x38], 6
mov edx, dword [ebp - 0x14]
cmp ecx, edi
jl 0x424170
mov ecx, dword [esi + 0x2c]
push edi
add ecx, 0x2c
call fcn.0042a110
mov eax, dword [esi + 0x2c]
xorps xmm5, xmm5
mov ecx, dword [ebx + 0xc]
movss xmm4, dword [0x438d10]
dec ecx
mov edi, dword [ebx + 8]
mov edx, dword [eax + 0x34]
mov dword [ebp - 0x10], ecx
shl ecx, 3
xor esi, esi
mov dword [ebp - 0x30], edx
nop dword [eax + eax]
movss xmm2, dword [edi + esi*8]
lea eax, [esi*8]
movss xmm3, dword [edi + esi*8 + 4]
subss xmm2, dword [ecx + edi]
subss xmm3, dword [ecx + edi + 4]
mov dword [ebp - 0x14], eax
mov eax, dword [ebx + 0xc]
movaps xmm0, xmm2
movaps xmm1, xmm3
mulss xmm0, xmm2
mulss xmm1, xmm3
addss xmm1, xmm0
comiss xmm1, xmm5
jbe 0x424219
rsqrtss xmm1, xmm1
movaps xmm0, xmm1
mulss xmm3, xmm1
mulss xmm2, xmm0
xorps xmm2, xmm4
movss dword [ecx + edx], xmm3
inc esi
movss dword [ecx + edx + 4], xmm2
mov ecx, dword [ebp - 0x14]
cmp esi, eax
jl 0x4241d0
mov ecx, dword [ebp - 4]
xor eax, eax
movss xmm0, dword [ebp - 0xc]
movss xmm4, dword [0x438b4c]
movss xmm5, dword [0x438b08]
movss xmm6, dword [0x438b84]
movss xmm7, dword [0x438bdc]
mov esi, dword [ebp - 0x20]
movzx ecx, cx
mov dword [ebp - 0x14], ecx
lea ecx, [edi + 4]
mov dword [ebp - 4], ecx
mov ecx, edx
mulss xmm0, xmm4
sub ecx, edi
mov dword [ebp - 0x24], ecx
mov ecx, dword [ebp - 0x10]
mov dword [ebp - 8], eax
movss dword [ebp - 0xc], xmm0
nop
movss xmm2, dword [edx + eax*8]
mov eax, dword [ebp - 4]
mov edi, dword [ebp - 0x24]
addss xmm2, dword [edx + ecx*8]
movss xmm3, dword [edi + eax]
addss xmm3, dword [edx + ecx*8 + 4]
mulss xmm2, xmm4
mulss xmm3, xmm4
movaps xmm0, xmm2
mulss xmm0, xmm2
movaps xmm1, xmm3
mulss xmm1, xmm3
addss xmm1, xmm0
comiss xmm1, xmm5
jbe 0x4242d3
movaps xmm0, xmm6
divss xmm0, xmm1
movaps xmm1, xmm7
minss xmm1, xmm0
movaps xmm0, xmm1
mulss xmm3, xmm1
mulss xmm2, xmm0
movss xmm0, dword [eax - 4]
mov eax, dword [esi + 0x34]
movss xmm1, dword [ebp - 0xc]
mulss xmm1, xmm2
mov edx, dword [ebx + 0x10]
movss xmm2, dword [ebp - 0xc]
mulss xmm2, xmm3
mov edi, dword [ebp - 0x2c]
movss xmm3, dword [ebp - 0x1c]
subss xmm0, xmm1
movss dword [eax], xmm0
mov eax, dword [ebp - 4]
movss xmm0, dword [eax]
mov eax, dword [esi + 0x34]
subss xmm0, xmm2
movss dword [eax + 4], xmm0
mov eax, dword [esi + 0x34]
movss xmm0, dword [ebp - 0x18]
movss dword [eax + 8], xmm0
movss dword [eax + 0xc], xmm3
mov eax, dword [esi + 0x34]
mov dword [eax + 0x10], edx
mov eax, dword [esi + 0x34]
mov edx, dword [ebp - 4]
add dword [ebp - 4], 8
addss xmm1, dword [edx - 4]
movss dword [eax + 0x14], xmm1
addss xmm2, dword [edx]
mov eax, dword [esi + 0x34]
mov edx, dword [ebp - 0x28]
movss dword [eax + 0x18], xmm2
mov eax, dword [esi + 0x34]
movss dword [eax + 0x1c], xmm0
movss dword [eax + 0x20], xmm3
mov eax, dword [esi + 0x34]
mov dword [eax + 0x24], edx
mov eax, dword [ebp - 8]
mov edx, dword [ebp - 0x14]
add dword [esi + 0x34], 0x28
lea edx, [edx + eax*2]
mov eax, dword [esi + 0x38]
mov word [eax], dx
mov eax, dword [ebp - 0x14]
lea ecx, [eax + ecx*2]
mov eax, dword [esi + 0x38]
mov word [eax + 2], cx
mov ecx, dword [ebp - 0x10]
movzx eax, di
lea ecx, [eax + ecx*2]
mov eax, dword [esi + 0x38]
mov word [eax + 4], cx
mov eax, dword [esi + 0x38]
mov word [eax + 6], cx
mov eax, dword [ebp - 8]
movzx ecx, di
lea ecx, [ecx + eax*2]
mov eax, dword [esi + 0x38]
mov word [eax + 8], cx
mov eax, dword [esi + 0x38]
mov word [eax + 0xa], dx
mov eax, dword [ebp - 8]
mov ecx, eax
add dword [esi + 0x38], 0xc
inc eax
mov edx, dword [ebp - 0x30]
mov dword [ebp - 0x10], ecx
mov dword [ebp - 8], eax
cmp eax, dword [ebx + 0xc]
jl 0x424280
mov eax, dword [ebp - 0x34]
movzx eax, ax
add dword [esi + 0x28], eax
pop edi
pop esi
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret 0xc
push ecx
add ecx, 0xfffffffe
lea eax, [ecx + ecx*2]
mov ecx, esi
push eax
call fcn.00423210
mov eax, dword [ebx + 0xc]
movss xmm0, dword [ebp - 0x18]
movss xmm1, dword [ebp - 0x1c]
mov dword [ebp - 0x14], eax
nop
mov eax, dword [esi + 0x34]
lea edi, [edi + 8]
mov ecx, dword [edi - 8]
mov edx, dword [edi - 4]
mov dword [eax], ecx
mov ecx, dword [ebx + 0x10]
mov dword [eax + 4], edx
mov eax, dword [esi + 0x34]
movss dword [eax + 8], xmm0
movss dword [eax + 0xc], xmm1
mov eax, dword [esi + 0x34]
mov dword [eax + 0x10], ecx
add dword [esi + 0x34], 0x14
sub dword [ebp - 0x14], 1
jne 0x424400
mov edi, 2
mov ecx, dword [esi + 0x38]
mov ax, word [esi + 0x28]
movzx edx, di
inc edi
mov word [ecx], ax
movzx ecx, word [esi + 0x28]
mov eax, dword [esi + 0x38]
dec cx
add cx, dx
mov word [eax + 2], cx
mov eax, dword [esi + 0x38]
movzx ecx, word [esi + 0x28]
add cx, dx
mov word [eax + 4], cx
add dword [esi + 0x38], 6
mov eax, dword [ebx + 0xc]
cmp edi, eax
jl 0x424436
movzx eax, ax
add dword [esi + 0x28], eax
pop edi
pop esi
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret 0xc