Function at 0x407820
Capabilities:
Encrypt data using rc4 prga

Disassembly:
push ebp
push ebx
push edi
push esi
sub esp, 0xc
mov esi, ecx
test edx, edx
je 0x407835
push esi
call fcn.00407b40
jmp 0x40783b
push esi
call fcn.00407fd0
add esp, 4
lea ebp, [esi + 0x9272]
cmp ebp, dword [esi + 0x28]
jae 0x407ac9
mov ebx, 1
jmp 0x407872
mov ebp, dword [esp]
mov ebx, dword [esp + 8]
shr ebx, 1
cmp ebp, dword [esi + 0x28]
jae 0x407acf
cmp ebx, 1
jne 0x407882
movzx ebx, byte [ebp]
inc ebp
or ebx, 0x100
test bl, 1
jne 0x407900
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 0x4078da
jmp 0x407867
shr edx, 8
mov dword [esi + 0x48], edx
mov eax, ecx
xor eax, 8
and ecx, 0xfffffff7
add ecx, ecx
sub ecx, eax
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x407867
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x4078c0
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x4078c0
mov dword [esp + 8], ebx
movzx edx, byte [ebp]
movzx eax, word [edx + edx + 0x438bea]
movzx ebx, word [esi + eax*2 + 0x8852]
mov ecx, dword [esi + 0x44]
shl ebx, cl
movzx eax, byte [esi + eax + 0x8f12]
add eax, ecx
movzx ecx, byte [ebp + 1]
mov dword [esp + 4], ecx
or ebx, dword [esi + 0x48]
movzx edi, byte [ebp + 2]
mov dword [esi + 0x48], ebx
mov dword [esi + 0x44], eax
cmp eax, 8
jae 0x4079b1
mov dword [esp], edi
movzx edi, byte [edx + 0x438e44]
and edx, dword [edi*4 + 0x438e00]
mov ecx, eax
shl edx, cl
or edx, ebx
mov dword [esi + 0x48], edx
add eax, edi
mov dword [esi + 0x44], eax
cmp eax, 8
jb 0x4079d0
mov edi, dword [esp]
jmp 0x407981
shr edx, 8
mov dword [esi + 0x48], edx
add eax, 0xfffffff8
mov dword [esi + 0x44], eax
cmp eax, 7
jbe 0x4079d3
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x407970
lea eax, [ecx + 1]
mov dword [esi + 0x30], eax
mov byte [ecx], dl
mov eax, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x407970
shr ebx, 8
mov dword [esi + 0x48], ebx
add eax, 0xfffffff8
mov dword [esi + 0x44], eax
cmp eax, 7
jbe 0x407941
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x4079a0
lea eax, [ecx + 1]
mov dword [esi + 0x30], eax
mov byte [ecx], bl
mov eax, dword [esi + 0x44]
mov ebx, dword [esi + 0x48]
jmp 0x4079a0
mov edi, dword [esp]
mov dword [esp], ebp
mov ebp, edi
shl ebp, 8
add ebp, dword [esp + 4]
cmp ebp, 0x200
jb 0x407a00
lea ecx, [edi + 0x438b6a]
lea edi, [edi + 0x439144]
jmp 0x407a0c
lea ecx, [ebp + 0x43896a]
lea edi, [ebp + 0x438f44]
mov dword [esp + 4], edi
movzx edi, byte [ecx]
movzx ebx, word [esi + edi*2 + 0x8a92]
mov ecx, eax
shl ebx, cl
or ebx, edx
movzx ecx, byte [esi + edi + 0x9032]
add ecx, eax
mov eax, dword [esp + 4]
movzx eax, byte [eax]
mov dword [esi + 0x48], ebx
mov dword [esi + 0x44], ecx
cmp ecx, 8
jae 0x407ab1
add dword [esp], 3
mov edx, ebp
not edx
or edx, dword [eax*4 + 0x438e00]
add edx, ebp
inc edx
shl edx, cl
or edx, ebx
mov dword [esi + 0x48], edx
add ecx, eax
mov dword [esi + 0x44], ecx
cmp ecx, 8
jb 0x407860
mov ebp, dword [esp]
mov ebx, dword [esp + 8]
jmp 0x407a85
shr edx, 8
mov dword [esi + 0x48], edx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x407867
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x407a70
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x407a70
shr ebx, 8
mov dword [esi + 0x48], ebx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x407a3d
mov edx, dword [esi + 0x30]
cmp edx, dword [esi + 0x34]
jae 0x407aa0
lea ecx, [edx + 1]
mov dword [esi + 0x30], ecx
mov byte [edx], bl
mov ecx, dword [esi + 0x44]
mov ebx, dword [esi + 0x48]
jmp 0x407aa0
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 0x407b21
mov ecx, dword [esi + 0x30]
xor eax, eax
cmp ecx, dword [esi + 0x34]
setb al
add esp, 0xc
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 0x407aee
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x407b10
lea edx, [ecx + 1]
mov dword [esi + 0x30], edx
mov byte [ecx], al
mov edi, dword [esi + 0x44]
mov eax, dword [esi + 0x48]
jmp 0x407b10