Function at 0x40a970
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 0x40a985
push esi
call fcn.0040ac70
jmp 0x40a98b
push esi
call fcn.0040b100
add esp, 4
lea ebp, [esi + 0x9272]
cmp ebp, dword [esi + 0x28]
jae 0x40abfa
mov ebx, 1
jmp 0x40a9bf
mov ebx, dword [esp + 4]
shr ebx, 1
cmp ebp, dword [esi + 0x28]
jae 0x40ac00
cmp ebx, 1
jne 0x40a9cf
movzx ebx, byte [ebp]
inc ebp
or ebx, 0x100
test bl, 1
jne 0x40aa40
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 0x40aa21
jmp 0x40a9b4
shr edx, 8
mov dword [esi + 0x48], edx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x40a9b4
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x40aa10
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x40aa10
mov dword [esp + 4], ebx
movzx eax, byte [ebp]
mov dword [esp], eax
movzx eax, word [eax + eax + 0x44502e]
movzx ebx, word [esi + eax*2 + 0x8852]
mov ecx, dword [esi + 0x44]
mov edi, ebp
mov ebp, dword [esi + 0x48]
shl ebx, cl
mov edx, ebp
xor edx, ebx
not ebx
and ebx, ebp
add edx, ebp
sub edx, ebx
movzx ebx, byte [edi + 1]
mov dword [esp + 8], ebx
movzx eax, byte [esi + eax + 0x8f12]
add eax, ecx
mov dword [esp + 0xc], edi
movzx ebp, byte [edi + 2]
mov dword [esi + 0x48], edx
mov dword [esi + 0x44], eax
cmp eax, 8
jae 0x40aaf1
mov edi, dword [esp]
movzx ebx, byte [edi + 0x445288]
and edi, dword [ebx*4 + 0x445244]
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 0x40ab21
mov dword [esp], edx
mov edx, ebp
shl edx, 8
add edx, dword [esp + 8]
cmp edx, 0x200
jb 0x40ab40
lea ecx, [ebp + 0x444fae]
lea ebp, [ebp + 0x445588]
jmp 0x40ab4c
shr edx, 8
mov dword [esi + 0x48], edx
add eax, 0xfffffff8
mov dword [esi + 0x44], eax
cmp eax, 7
jbe 0x40aa96
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x40aae0
lea eax, [ecx + 1]
mov dword [esi + 0x30], eax
mov byte [ecx], dl
mov eax, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x40aae0
shr edx, 8
mov dword [esi + 0x48], edx
add eax, 0xfffffff8
mov dword [esi + 0x44], eax
cmp eax, 7
jbe 0x40aabc
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x40ab10
lea eax, [ecx + 1]
mov dword [esi + 0x30], eax
mov byte [ecx], dl
mov eax, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x40ab10
lea ecx, [edx + 0x444dae]
lea ebp, [edx + 0x445388]
movzx edi, byte [ecx]
movzx ebx, word [esi + edi*2 + 0x8a92]
mov ecx, eax
shl ebx, cl
or ebx, dword [esp]
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 0x40abe1
mov ebp, dword [esp + 0xc]
add ebp, 3
and edx, dword [eax*4 + 0x445244]
shl edx, cl
or edx, ebx
mov dword [esi + 0x48], edx
add ecx, eax
mov dword [esi + 0x44], ecx
cmp ecx, 8
jb 0x40a9b0
mov ebx, dword [esp + 4]
jmp 0x40abb5
shr edx, 8
mov dword [esi + 0x48], edx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x40a9b4
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x40aba0
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x40aba0
shr ebx, 8
mov dword [esi + 0x48], ebx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x40ab77
mov ebp, dword [esi + 0x30]
cmp ebp, dword [esi + 0x34]
jae 0x40abd0
lea ecx, [ebp + 1]
mov dword [esi + 0x30], ecx
mov byte [ebp], bl
mov ecx, dword [esi + 0x44]
mov ebx, dword [esi + 0x48]
jmp 0x40abd0
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 0x40ac51
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 0x40ac1f
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x40ac40
lea edx, [ecx + 1]
mov dword [esi + 0x30], edx
mov byte [ecx], al
mov edi, dword [esi + 0x44]
mov eax, dword [esi + 0x48]
jmp 0x40ac40