Function at 0x4fc510
Capabilities:
Encrypt data using rc4 ksa

Disassembly:
push ebp
mov ebp, esp
add esp, 0xffffffb0
push ebx
push esi
push edi
mov dword [ebp - 0xc], ecx
mov dword [ebp - 8], edx
mov dword [ebp - 4], eax
mov eax, dword [ebp - 4]
mov eax, dword [eax + 4]
mov edx, dword [ebp - 4]
movzx edx, word [edx + 0xe]
imul edx
call fcn.004fc004
mov dword [ebp - 0x18], eax
mov eax, dword [ebp - 0x18]
add eax, 0xd400
add eax, 0x4000
mov dword [ebp - 0x2c], eax
mov eax, dword [ebp - 0x2c]
call fcn.004a3500
mov dword [ebp - 0x3c], eax
push ebp
push 0x4fc97c
push dword fs:[0]
mov dword fs:[0], esp
mov eax, dword [ebp - 4]
mov eax, dword [eax + 4]
mov edx, dword [ebp - 4]
imul dword [edx + 8]
add eax, eax
call fcn.004a3500
mov dword [ebp - 0x40], eax
push ebp
push 0x4fc95f
push dword fs:[0]
mov dword fs:[0], esp
mov eax, dword [ebp - 0x3c]
mov dword [ebp - 0x4c], eax
mov edx, 0xc000
mov eax, dword [ebp - 0x3c]
call fcn.004a3558
mov dword [ebp - 0x48], eax
mov edx, 0xd400
mov eax, dword [ebp - 0x3c]
call fcn.004a3558
mov dword [ebp - 0x14], eax
xor ebx, ebx
lea eax, [ebx + ebx*2]
mov edx, dword [ebp - 0x4c]
mov ecx, ebx
shr ecx, 8
mov byte [edx + eax*4], cl
mov edx, dword [ebp - 0x4c]
mov ecx, ebx
shr ecx, 4
and cl, 0xf
mov byte [edx + eax*4 + 1], cl
mov edx, dword [ebp - 0x4c]
mov ecx, ebx
and cl, 0xf
mov byte [edx + eax*4 + 2], cl
mov edx, dword [ebp - 0x4c]
xor ecx, ecx
mov dword [edx + eax*4 + 4], ecx
inc ebx
cmp ebx, 0x1000
jne 0x4fc5ba
mov eax, dword [ebp - 0x40]
mov dword [ebp - 0x44], eax
mov eax, dword [ebp - 4]
mov eax, dword [eax + 8]
dec eax
test eax, eax
jl 0x4fc6b0
inc eax
mov dword [ebp - 0x50], eax
xor ebx, ebx
mov edx, dword [ebp - 4]
mov edx, dword [edx + 8]
dec edx
sub edx, ebx
imul edx, dword [ebp - 0x18]
mov eax, dword [ebp - 8]
call fcn.004a3558
mov edx, eax
mov ecx, dword [ebp - 0x18]
mov eax, dword [ebp - 0x14]
call fcn.004a3560
mov esi, dword [ebp - 0x14]
mov edi, dword [ebp - 4]
mov edi, dword [edi + 4]
dec edi
test edi, edi
jl 0x4fc6a6
inc edi
movzx eax, byte [esi + 2]
and al, 0xf0
movzx eax, al
shl eax, 4
movzx edx, byte [esi + 1]
and dl, 0xf0
movzx edx, dl
add ax, dx
movzx edx, byte [esi]
and dl, 0xf0
movzx edx, dl
shr edx, 4
add ax, dx
mov word [ebp - 0x22], ax
movzx eax, word [ebp - 0x22]
lea eax, [eax + eax*2]
mov edx, dword [ebp - 0x4c]
inc dword [edx + eax*4 + 4]
mov edx, 3
mov eax, esi
call fcn.004a3558
mov esi, eax
mov eax, dword [ebp - 0x44]
movzx edx, word [ebp - 0x22]
mov word [eax], dx
mov edx, 2
mov eax, dword [ebp - 0x44]
call fcn.004a3558
mov dword [ebp - 0x44], eax
dec edi
jne 0x4fc641
inc ebx
dec dword [ebp - 0x50]
jne 0x4fc610
xor ebx, ebx
lea eax, [ebx + ebx*4]
mov edx, dword [ebp - 0x48]
xor ecx, ecx
mov dword [edx + eax*4 + 0x10], ecx
mov edx, dword [ebp - 0x48]
xor ecx, ecx
mov dword [edx + eax*4 + 0xc], ecx
mov edx, dword [ebp - 0x48]
xor ecx, ecx
mov dword [edx + eax*4 + 8], ecx
xor ecx, ecx
lea eax, [ebx + ebx*4]
mov edx, dword [ebp - 0x48]
lea edx, [edx + eax*4]
mov byte [edx + ecx], 0
mov edx, dword [ebp - 0x48]
lea eax, [edx + eax*4]
mov byte [eax + ecx + 3], 0xff
inc ecx
cmp ecx, 3
jne 0x4fc6d2
inc ebx
cmp ebx, 0x100
jne 0x4fc6b2
xor ebx, ebx
lea eax, [ebx + ebx*2]
mov edx, dword [ebp - 0x4c]
cmp dword [edx + eax*4 + 4], 0
jg 0x4fc711
inc ebx
cmp ebx, 0x1000
jl 0x4fc6fb
lea eax, [ebx + ebx*2]
mov edx, dword [ebp - 0x4c]
lea eax, [edx + eax*4]
lea edx, [ebx + ebx*2]
mov ecx, dword [ebp - 0x4c]
lea edx, [ecx + edx*4]
mov ecx, dword [ebp - 0x48]
mov dword [ecx + 0x10], edx
mov ecx, 1
inc ebx
cmp ebx, 0x1000
jge 0x4fc75d
lea edx, [ebx + ebx*2]
mov esi, dword [ebp - 0x4c]
cmp dword [esi + edx*4 + 4], 0
jle 0x4fc754
mov esi, dword [ebp - 0x4c]
lea esi, [esi + edx*4]
mov dword [eax + 8], esi
mov eax, dword [ebp - 0x4c]
lea eax, [eax + edx*4]
inc ecx
inc ebx
cmp ebx, 0x1000
jl 0x4fc737
xor edx, edx
mov dword [eax + 8], edx
mov eax, dword [ebp - 0x48]
mov dword [eax + 8], ecx
mov eax, dword [ebp - 4]
mov eax, dword [eax + 4]
mov edx, dword [ebp - 4]
imul dword [edx + 8]
mov edx, dword [ebp - 0x48]
mov dword [edx + 0xc], eax
mov dword [ebp - 0x28], 1
mov edx, dword [ebp - 0x18]
add edx, 0xd400
mov eax, dword [ebp - 0x3c]
call fcn.004a3558
push eax
lea ecx, [ebp - 0x28]
mov edx, dword [ebp + 0xc]
mov edx, dword [edx]
mov eax, dword [ebp - 0x48]
call fcn.004fc214
mov eax, dword [ebp + 0xc]
mov eax, dword [eax]
cmp eax, dword [ebp - 0x28]
jle 0x4fc7da
mov ebx, dword [ebp - 0x28]
mov eax, dword [ebp + 0xc]
mov eax, dword [eax]
dec eax
sub eax, ebx
jl 0x4fc7da
inc eax
mov dword [ebp - 0x50], eax
mov eax, dword [ebp + 8]
lea esi, [eax + ebx*4]
mov eax, esi
xor ecx, ecx
mov edx, 4
call fcn.00403c80
add esi, 4
dec dword [ebp - 0x50]
jne 0x4fc7c4
mov eax, dword [ebp - 0x28]
dec eax
test eax, eax
jl 0x4fc897
inc eax
mov dword [ebp - 0x50], eax
xor ebx, ebx
mov esi, dword [ebp + 8]
lea eax, [ebx + ebx*4]
mov edx, dword [ebp - 0x48]
mov ecx, dword [edx + eax*4 + 8]
test ecx, ecx
jle 0x4fc88a
mov edx, dword [ebp - 0x48]
mov eax, dword [edx + eax*4 + 0x10]
xor edx, edx
mov dword [ebp - 0x30], edx
xor edx, edx
mov dword [ebp - 0x34], edx
xor edx, edx
mov dword [ebp - 0x38], edx
test eax, eax
je 0x4fc839
mov byte [eax + 3], bl
movzx edx, byte [eax]
add dword [ebp - 0x30], edx
movzx edx, byte [eax + 1]
add dword [ebp - 0x34], edx
movzx edx, byte [eax + 2]
add dword [ebp - 0x38], edx
mov eax, dword [eax + 8]
test eax, eax
jne 0x4fc81b
mov edi, esi
mov eax, dword [ebp - 0x30]
shl eax, 4
or eax, 0xf
cdq
idiv ecx
mov byte [edi + 2], al
mov eax, dword [ebp - 0x34]
shl eax, 4
or eax, 0xf
cdq
idiv ecx
mov byte [edi + 1], al
mov eax, dword [ebp - 0x38]
shl eax, 4
or eax, 0xf
cdq
idiv ecx
mov byte [edi], al
mov byte [edi + 3], 0
cmp byte [edi + 2], 0x10
ja 0x4fc88a
cmp byte [edi + 1], 0x10
ja 0x4fc88a
cmp byte [edi], 0x10
ja 0x4fc88a
mov eax, esi
xor ecx, ecx
mov edx, 4
call fcn.00403c80
inc ebx
add esi, 4
dec dword [ebp - 0x50]
jne 0x4fc7ef
mov eax, dword [ebp - 4]
mov eax, dword [eax + 4]
add eax, eax
mov dword [ebp - 0x1c], eax
mov eax, dword [ebp - 4]
mov eax, dword [eax + 4]
add eax, eax
add eax, eax
add eax, eax
call fcn.004fc004
mov dword [ebp - 0x20], eax
mov edx, dword [ebp - 4]
mov edx, dword [edx + 8]
imul edx, dword [ebp - 0x20]
mov eax, dword [ebp - 0xc]
xor ecx, ecx
call fcn.00403c80
mov eax, dword [ebp - 4]
mov eax, dword [eax + 8]
dec eax
test eax, eax
jl 0x4fc949
inc eax
mov dword [ebp - 0x50], eax
xor ebx, ebx
mov edx, dword [ebp - 4]
mov edx, dword [edx + 8]
dec edx
sub edx, ebx
imul edx, dword [ebp - 0x1c]
mov eax, dword [ebp - 0x40]
call fcn.004a3558
mov dword [ebp - 0x14], eax
mov edx, ebx
imul edx, dword [ebp - 0x20]
mov eax, dword [ebp - 0xc]
call fcn.004a3558
mov esi, eax
mov edi, dword [ebp - 4]
mov edi, dword [edi + 4]
dec edi
test edi, edi
jl 0x4fc943
inc edi
mov eax, dword [ebp - 0x14]
movzx eax, word [eax]
lea eax, [eax + eax*2]
mov edx, dword [ebp - 0x4c]
movzx eax, byte [edx + eax*4 + 3]
mov byte [esi], al
mov edx, 2
mov eax, dword [ebp - 0x14]
call fcn.004a3558
mov dword [ebp - 0x14], eax
mov edx, 1
mov eax, esi
call fcn.004a3558
mov esi, eax
dec edi
jne 0x4fc90f
inc ebx
dec dword [ebp - 0x50]
jne 0x4fc8db
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
push 0x4fc966
lea eax, [ebp - 0x40]
call fcn.004a3520
ret