Function at 0x402640
Capabilities:
Encrypt data using rc4 prga

Disassembly:
push ebp
push ebx
push edi
push esi
sub esp, 0x18
mov ebp, dword [ecx]
xor eax, eax
cmp byte [ebp], 0x22
jne 0x4028ea
mov esi, ebp
jmp 0x40266f
lea esi, [ebx + 2]
mov dword [ecx], esi
cmp byte [ebx + 2], 0
je 0x4028ea
mov ebx, esi
inc esi
mov dword [ecx], esi
movzx edi, byte [ebx + 1]
cmp edi, 0x5c
je 0x402660
test edi, edi
je 0x4028ea
cmp edi, 0x22
jne 0x40266f
mov dword [esp + 8], edx
add ebx, 2
mov dword [ecx], ebx
mov edi, ebp
sub ebx, ebp
lea eax, [ebx - 1]
push eax
call dword [0x447004]
add esp, 4
mov dword [esp], eax
test eax, eax
je case.0x4026f7.35
mov esi, dword [esp]
add ebx, 0xfffffffe
je 0x4028a0
movzx eax, byte [edi + 1]
mov esi, dword [esp]
test al, al
je 0x4028a0
mov ebp, edi
inc ebp
mov esi, dword [esp]
mov dword [esp + 0xc], ebp
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
cmp al, 0x5c
jne 0x402710
movzx eax, byte [ebp + 1]
add eax, 0xffffffde
cmp eax, 0x53
ja case.0x4026f7.35
lea edi, [ebp + 1]
jmp dword [eax*4 + 0x4446bc]
mov byte [esi], 0x22
jmp 0x40271c
cmp al, 0x20
jb case.0x4026f7.35
mov byte [esi], al
mov edi, ebp
inc esi
movzx eax, byte [edi + 1]
test al, al
mov edx, dword [esp + 0xc]
je 0x4028a0
inc edi
mov ecx, edi
sub ecx, edx
mov ebp, edi
cmp ecx, ebx
jb 0x4026e0
jmp 0x4028a0
mov byte [esi], 0xa
jmp 0x40271c
mov byte [esi], 0x2f
jmp 0x40271c
mov byte [esi], 8
jmp 0x40271c
lea ecx, [ebp + 2]
lea edx, [esp + 0x14]
call fcn.00402900
test eax, eax
jne case.0x4026f7.35
mov ecx, dword [esp + 0x14]
cmp ecx, 0x7f
ja 0x402781
mov byte [esi], cl
jmp 0x4027ce
mov byte [esi], 0x5c
jmp 0x40271c
mov byte [esi], 0xd
jmp 0x40271c
mov byte [esi], 0xc
jmp 0x40271c
mov byte [esi], 9
jmp 0x40271c
cmp ecx, 0x7ff
ja 0x40279e
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 0x4027ce
lea eax, [ecx - 0xe000]
cmp eax, 0xfffff7ff
ja 0x4027dd
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 0x40271c
cmp ecx, 0xdbff
ja case.0x4026f7.35
cmp byte [ebp + 6], 0x5c
jne case.0x4026f7.35
cmp byte [ebp + 7], 0x75
jne case.0x4026f7.35
add ebp, 8
mov dword [esp + 4], ecx
mov ecx, ebp
lea edx, [esp + 0x10]
call fcn.00402900
mov ecx, dword [esp + 4]
test eax, eax
jne case.0x4026f7.35
mov eax, dword [esp + 0x10]
cmp eax, 0xdc00
jb case.0x4026f7.35
cmp eax, 0xdfff
ja case.0x4026f7.35
shl ecx, 0xa
mov edx, 0xffc00
sub edx, ecx
and edx, 0xffc00
mov ecx, eax
and ecx, 0x3ff
or ecx, edx
xor ecx, 0xffc00
add ecx, 0x10000
mov edx, ecx
shr edx, 0x12
or dl, 0xf0
mov byte [esi], dl
mov edx, ecx
shr edx, 0xc
and dl, 0x3f
or dl, 0x80
mov byte [esi + 1], dl
shr ecx, 6
mov edx, ecx
not edx
or edx, 0x3f
add edx, ecx
inc dl
or dl, 0x80
mov byte [esi + 2], dl
and al, 0x3f
or al, 0x80
mov byte [esi + 3], al
add esi, 3
mov eax, 7
add edi, eax
add edi, 3
jmp 0x40271c
mov byte [esi], 0
sub esi, dword [esp]
lea edi, [esi + 1]
push edi
call dword [0x447004]
add esp, 4
test eax, eax
je case.0x4026f7.35
push edi
mov ebx, dword [esp + 4]
push ebx
push eax
mov edi, eax
call fcn.00408840
add esp, 0xc
mov eax, dword [esp + 8]
mov dword [eax], esi
push ebx
call dword [section..data]
add esp, 4
mov eax, edi
jmp 0x4028ea
push dword [esp]
call dword [section..data]
add esp, 4
xor eax, eax
add esp, 0x18
pop esi
pop edi
pop ebx
pop ebp
ret