Function at 0x402640
Capabilities:
Encrypt data using rc4 prga

Disassembly:
push ebp
push ebx
push edi
push esi
sub esp, 0x1c
mov ebp, dword [ecx]
xor eax, eax
cmp byte [ebp], 0x22
jne 0x4028ec
mov esi, ebp
jmp 0x40266f
lea esi, [ebx + 2]
mov dword [ecx], esi
cmp byte [ebx + 2], 0
je 0x4028ec
mov ebx, esi
inc esi
mov dword [ecx], esi
movzx edi, byte [ebx + 1]
cmp edi, 0x5c
je 0x402660
test edi, edi
je 0x4028ec
cmp edi, 0x22
jne 0x40266f
mov dword [esp + 0xc], edx
add ebx, 2
mov dword [ecx], ebx
mov esi, ebp
sub ebx, ebp
lea eax, [ebx - 1]
push eax
call dword [0x443004]
add esp, 4
mov dword [esp], eax
test eax, eax
je case.0x40271f.35
inc esi
mov dword [esp + 4], esi
movzx eax, byte [esi]
mov esi, dword [esp]
test al, al
je 0x402896
add ebx, 0xfffffffe
mov ebp, dword [esp + 4]
mov ecx, ebp
not ecx
mov dword [esp + 0x10], ecx
mov esi, dword [esp]
jmp 0x4026f0
mov byte [esi], 0xa
nop
nop
nop
nop
nop
nop
nop
inc esi
movzx eax, byte [edi + 1]
inc edi
mov ebp, edi
test al, al
je 0x402896
mov ecx, ebp
not ecx
and ecx, dword [esp + 4]
mov edx, ebp
and edx, dword [esp + 0x10]
sub edx, ecx
cmp edx, ebx
jae 0x402896
cmp al, 0x5c
jne 0x402730
movzx eax, byte [ebp + 1]
add eax, 0xffffffde
cmp eax, 0x53
ja case.0x40271f.35
lea edi, [ebp + 1]
jmp dword [eax*4 + 0x4406bc]
mov byte [esi], 0x22
jmp 0x4026e0
cmp al, 0x20
jb case.0x40271f.35
mov byte [esi], al
mov edi, ebp
jmp 0x4026e0
mov byte [esi], 0x2f
jmp 0x4026e0
mov byte [esi], 8
jmp 0x4026e0
lea ecx, [ebp + 2]
lea edx, [esp + 0x18]
call fcn.00402900
test eax, eax
jne case.0x40271f.35
mov ecx, dword [esp + 0x18]
cmp ecx, 0x7f
ja 0x402789
mov byte [esi], cl
jmp 0x4027d6
mov byte [esi], 0x5c
jmp 0x4026e0
mov byte [esi], 0xd
jmp 0x4026e0
mov byte [esi], 0xc
jmp 0x4026e0
mov byte [esi], 9
jmp 0x4026e0
cmp ecx, 0x7ff
ja 0x4027a6
mov eax, ecx
shr eax, 6
or al, 0xc0
mov byte [esi], al
and cl, 0x3f
or cl, 0x80
mov byte [esi + 1], cl
inc esi
jmp 0x4027d6
lea eax, [ecx - 0xe000]
cmp eax, 0xfffff7ff
ja 0x4027e5
mov eax, ecx
shr eax, 0xc
and al, 0xf
or al, 0xe0
mov byte [esi], al
mov eax, ecx
shr eax, 6
and al, 0x3f
or al, 0x80
mov byte [esi + 1], al
and cl, 0x3f
or cl, 0x80
mov byte [esi + 2], cl
add esi, 2
mov eax, 1
add edi, eax
add edi, 3
jmp 0x4026e0
cmp ecx, 0xdbff
ja case.0x40271f.35
cmp byte [ebp + 6], 0x5c
jne case.0x40271f.35
cmp byte [ebp + 7], 0x75
jne case.0x40271f.35
add ebp, 8
mov dword [esp + 8], ecx
mov ecx, ebp
lea edx, [esp + 0x14]
call fcn.00402900
mov ecx, dword [esp + 8]
test eax, eax
jne case.0x40271f.35
mov eax, dword [esp + 0x14]
cmp eax, 0xdc00
jb case.0x40271f.35
cmp eax, 0xdfff
ja case.0x40271f.35
shl ecx, 0xa
and ecx, 0xffc00
mov ebp, eax
mov edx, eax
and edx, 0x3ff
mov eax, ecx
add ecx, edx
add eax, edx
add eax, 0x10000
mov edx, eax
shr edx, 0x12
or dl, 0xf0
mov byte [esi], dl
shr eax, 0xc
and al, 0x3f
or al, 0x80
mov byte [esi + 1], al
shr ecx, 6
and cl, 0x3f
or cl, 0x80
mov byte [esi + 2], cl
mov eax, ebp
and al, 0x3f
or al, 0x80
mov byte [esi + 3], al
add esi, 3
mov eax, 7
add edi, eax
add edi, 3
jmp 0x4026e0
mov byte [esi], 0
mov eax, esi
mov ebx, dword [esp]
xor eax, ebx
not ebx
and ebx, esi
add ebx, ebx
sub ebx, eax
lea esi, [ebx + 1]
push esi
call dword [0x443004]
add esp, 4
test eax, eax
je case.0x40271f.35
push esi
mov esi, dword [esp + 4]
push esi
push eax
mov edi, eax
call fcn.00408650
add esp, 0xc
mov eax, dword [esp + 0xc]
mov dword [eax], ebx
push esi
call dword [section..data]
add esp, 4
mov eax, edi
jmp 0x4028ec
push dword [esp]
call dword [section..data]
add esp, 4
xor eax, eax
add esp, 0x1c
pop esi
pop edi
pop ebx
pop ebp
ret