Function at 0x53787e
Capabilities:
Encrypt data using rc4 ksa

Disassembly:
sub esp, 0xc10
push ebx
push ebp
push esi
mov esi, ecx
push edi
mov eax, dword [esi + 4]
test eax, eax
jne 0x537896
pop edi
pop esi
pop ebp
xor al, al
pop ebx
add esp, 0xc10
ret
mov ecx, 0x100
xor eax, eax
lea edi, [esp + 0x820]
xor ebx, ebx
rep stosd dword es:[edi], eax
mov ecx, 0x100
lea edi, [esp + 0x20]
rep stosd dword es:[edi], eax
mov ecx, 0x100
lea edi, [esp + 0x420]
rep stosd dword es:[edi], eax
mov ecx, dword [esi + 0x10]
test ecx, ecx
jle 0x537977
mov dword [esp + 0x10], eax
cdq
idiv ecx
mov dword [esi + 0x144], eax
mov eax, dword [esi + 0x148]
test eax, eax
jne 0x537977
mov eax, dword [esi + 0xc]
xor edi, edi
test eax, eax
jle 0x537960
push 1
push ebx
lea eax, [esp + 0x24]
push edi
push eax
mov ecx, esi
call fcn.0052a106
mov eax, dword [eax]
mov dword [esp + 0x14], eax
mov ecx, dword [esp + 0x15]
and ecx, 0xff
and eax, 0xff
lea edx, [ecx + ecx*2]
lea edx, [edx + edx*4]
lea edx, [edx + edx*4]
lea ebp, [ecx + edx*8]
mov edx, dword [esp + 0x16]
and edx, 0xff
mov ecx, edx
shl ecx, 4
add ecx, edx
lea edx, [eax + eax*2]
lea ecx, [ecx + ecx*8]
lea eax, [eax + edx*4]
lea ecx, [ebp + ecx*2]
lea eax, [eax + eax*8]
add ecx, eax
sar ecx, 0xa
mov edx, dword [esp + ecx*4 + 0x820]
lea eax, [esp + ecx*4 + 0x820]
inc edx
inc edi
mov dword [eax], edx
mov eax, dword [esi + 0xc]
cmp edi, eax
jl 0x5378f0
mov eax, dword [esp + 0x10]
mov ecx, dword [esi + 0x10]
inc ebx
add eax, 0x32
cmp ebx, ecx
mov dword [esp + 0x10], eax
jl 0x5378d0
xor ebp, ebp
xor ecx, ecx
xor eax, eax
mov ebx, dword [esp + eax + 0x820]
add eax, 4
add ecx, ebx
cmp eax, 0x3fc
mov dword [esp + eax + 0x1c], ecx
jle 0x53797d
mov ebx, dword [esp + 0x20]
mov eax, dword [esp + 0x41c]
cmp ebx, eax
jne 0x5379b0
pop edi
pop esi
pop ebp
xor al, al
pop ebx
add esp, 0xc10
ret
sub eax, ebx
mov dword [esp + 0x18], ebp
mov dword [esp + 0x14], eax
xor edi, edi
fild qword [esp + 0x14]
mov ecx, dword [esp + edi + 0x20]
mov dword [esp + 0x18], ebp
sub ecx, ebx
mov dword [esp + 0x14], ecx
fild qword [esp + 0x14]
fmul qword [0x6abdd4]
fdiv st(1)
call sub.msvcrt.dll__ftol
mov dword [esp + edi + 0x420], eax
add edi, 4
cmp edi, 0x3fc
jle 0x5379c0
mov eax, dword [esi + 0x28]
cmp eax, ebp
fstp st(0)
jne 0x537aa1
mov ecx, dword [esi + 0x10]
xor ebx, ebx
cmp ecx, ebp
jle 0x537af7
mov eax, ebp
cdq
idiv ecx
add eax, 0x32
mov dword [esi + 0x144], eax
mov eax, dword [esi + 0x148]
test eax, eax
jne 0x537af7
mov eax, dword [esi + 0xc]
xor edi, edi
test eax, eax
jle 0x537a85
push 1
push ebx
lea edx, [esp + 0x24]
push edi
push edx
mov ecx, esi
call fcn.0052a106
mov eax, dword [eax]
push eax
call fcn.0052e1a6
mov dword [esp + 0x18], eax
mov dword [esp + 0x14], eax
mov eax, dword [esp + 0x1a]
and eax, 0xff
mov cl, byte [esp + eax*4 + 0x424]
mov byte [esp + 0x16], cl
mov edx, dword [esp + 0x14]
push edx
call fcn.0052e0b6
add esp, 8
mov ecx, esi
push 0
push eax
push ebx
push edi
call fcn.0052a456
mov eax, dword [esi + 0xc]
inc edi
cmp edi, eax
jl 0x537a30
mov ecx, dword [esi + 0x10]
inc ebx
add ebp, 0x32
cmp ebx, ecx
jl 0x537a0b
pop edi
pop esi
pop ebp
mov al, 1
pop ebx
add esp, 0xc10
ret
xor edi, edi
cmp eax, ebp
jle 0x537af7
lea eax, [esp + 0x1c]
push edi
push eax
mov ecx, esi
call fcn.00529ec6
mov eax, dword [eax]
push eax
call fcn.0052e1a6
mov dword [esp + 0x18], eax
mov ecx, dword [esp + 0x1a]
and ecx, 0xff
mov dword [esp + 0x14], eax
mov dl, byte [esp + ecx*4 + 0x424]
mov byte [esp + 0x16], dl
mov eax, dword [esp + 0x14]
push eax
call fcn.0052e0b6
add esp, 8
mov ecx, esi
push eax
push edi
call fcn.00529e06
mov eax, dword [esi + 0x28]
inc edi
cmp edi, eax
jl 0x537aa7
pop edi
pop esi
pop ebp
mov al, 1
pop ebx
add esp, 0xc10
ret