Function at 0x406d20
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 0x406d35
push esi
call fcn.00407030
jmp 0x406d3b
push esi
call fcn.004074b0
add esp, 4
lea ebp, [esi + 0x9272]
cmp ebp, dword [esi + 0x28]
jae 0x406fba
mov ebx, 1
jmp 0x406d6f
mov ebx, dword [esp + 4]
shr ebx, 1
cmp ebp, dword [esi + 0x28]
jae 0x406fc0
cmp ebx, 1
jne 0x406d7f
movzx ebx, byte [ebp]
inc ebp
or ebx, 0x100
test bl, 1
jne 0x406df0
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 0x406dd1
jmp 0x406d64
shr edx, 8
mov dword [esi + 0x48], edx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x406d64
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x406dc0
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x406dc0
mov dword [esp + 4], ebx
movzx eax, byte [ebp]
mov edi, eax
movzx ebx, word [eax + eax + 0x442bea]
movzx edx, word [esi + ebx*2 + 0x8852]
mov eax, dword [esi + 0x44]
mov ecx, eax
shl edx, cl
movzx ecx, byte [esi + ebx + 0x8f12]
add ecx, eax
movzx eax, byte [ebp + 1]
mov dword [esp], eax
or edx, dword [esi + 0x48]
mov dword [esp + 8], ebp
movzx ebp, byte [ebp + 2]
mov dword [esi + 0x48], edx
mov dword [esi + 0x44], ecx
mov ebx, edi
cmp ecx, 8
jae 0x406ea1
movzx eax, byte [ebx + 0x442e44]
and ebx, dword [eax*4 + 0x442e00]
shl ebx, cl
or ebx, edx
mov dword [esi + 0x48], ebx
mov edx, ecx
and edx, eax
xor ecx, eax
lea eax, [ecx + edx*2]
mov dword [esi + 0x44], eax
cmp eax, 8
jae 0x406ed1
mov edx, ebp
shl edx, 8
add edx, dword [esp]
cmp edx, 0x200
jb 0x406ef0
mov edi, ebp
mov ebp, ebx
lea ecx, [edi + 0x442b6a]
lea edi, [edi + 0x443144]
jmp 0x406efe
shr edx, 8
mov dword [esi + 0x48], edx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x406e3a
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x406e90
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x406e90
shr ebx, 8
mov dword [esi + 0x48], ebx
add eax, 0xfffffff8
mov dword [esi + 0x44], eax
cmp eax, 7
jbe 0x406e60
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x406ec0
lea eax, [ecx + 1]
mov dword [esi + 0x30], eax
mov byte [ecx], bl
mov eax, dword [esi + 0x44]
mov ebx, dword [esi + 0x48]
jmp 0x406ec0
mov ebp, ebx
lea ecx, [edx + 0x44296a]
lea edi, [edx + 0x442f44]
mov dword [esp], edi
movzx edi, byte [ecx]
movzx ebx, word [esi + edi*2 + 0x8a92]
mov ecx, eax
shl ebx, cl
or ebx, ebp
movzx ecx, byte [esi + edi + 0x9032]
add ecx, eax
mov eax, dword [esp]
movzx eax, byte [eax]
mov dword [esi + 0x48], ebx
mov dword [esi + 0x44], ecx
cmp ecx, 8
jae 0x406fa1
mov ebp, dword [esp + 8]
add ebp, 3
and edx, dword [eax*4 + 0x442e00]
shl edx, cl
or edx, ebx
mov dword [esi + 0x48], edx
add ecx, eax
mov dword [esi + 0x44], ecx
cmp ecx, 8
jb 0x406d60
mov ebx, dword [esp + 4]
jmp 0x406f75
shr edx, 8
mov dword [esi + 0x48], edx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x406d64
mov eax, dword [esi + 0x30]
cmp eax, dword [esi + 0x34]
jae 0x406f60
lea ecx, [eax + 1]
mov dword [esi + 0x30], ecx
mov byte [eax], dl
mov ecx, dword [esi + 0x44]
mov edx, dword [esi + 0x48]
jmp 0x406f60
shr ebx, 8
mov dword [esi + 0x48], ebx
add ecx, 0xfffffff8
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x406f2d
mov ebp, dword [esi + 0x30]
cmp ebp, dword [esi + 0x34]
jae 0x406f90
lea ecx, [ebp + 1]
mov dword [esi + 0x30], ecx
mov byte [ebp], bl
mov ecx, dword [esi + 0x44]
mov ebx, dword [esi + 0x48]
jmp 0x406f90
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 0x407011
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 0x406fdf
mov ecx, dword [esi + 0x30]
cmp ecx, dword [esi + 0x34]
jae 0x407000
lea edx, [ecx + 1]
mov dword [esi + 0x30], edx
mov byte [ecx], al
mov edi, dword [esi + 0x44]
mov eax, dword [esi + 0x48]
jmp 0x407000