Function at 0x40d950
Capabilities:
Encrypt data using rc4 prga

Disassembly:
push ebp
mov ebp, esp
push ebx
push edi
push esi
sub esp, 0x24
mov ebx, dword [ecx]
mov edi, ecx
test ebx, ebx
je 0x40d9ab
mov ecx, dword [edi + 4]
mov esi, dword [edi + 8]
cmp esi, ecx
jae 0x40d9ab
movzx eax, byte [ebx + esi]
cmp eax, 0x49
je 0x40d9c2
cmp eax, 0x42
jne 0x40d9ab
lea eax, [esi + 1]
cmp eax, ecx
mov dword [edi + 8], eax
jae 0x40da4f
cmp byte [ebx + eax], 0x5f
jne 0x40da4f
lea eax, [esi + 2]
xor ecx, ecx
xor edx, edx
mov dword [edi + 8], eax
cmp ecx, esi
sbb edx, 0
jb 0x40db03
jmp 0x40db54
mov ecx, edi
xor edx, edx
call fcn.00408cf0
mov ebx, eax
add bl, bl
mov eax, ebx
add esp, 0x24
pop esi
pop edi
pop ebx
pop ebp
ret
inc esi
mov ecx, edi
xor edx, edx
mov dword [edi + 8], esi
call fcn.00408cf0
test al, al
jne 0x40db91
mov ecx, dword [edi + 0x10]
test ecx, ecx
je 0x40d9f5
mov edx, 0x7f2f14
push 1
call fcn.00404360
add esp, 4
test al, al
jne 0x40db91
mov eax, dword [edi]
mov bl, 1
test eax, eax
je 0x40d9b8
xor esi, esi
nop
mov ecx, dword [edi + 8]
cmp ecx, dword [edi + 4]
jae 0x40da12
cmp byte [eax + ecx], 0x45
je 0x40dbb8
sub esi, 1
jb 0x40da35
mov ecx, dword [edi + 0x10]
test ecx, ecx
je 0x40da35
mov edx, 0x7f3218
push 2
call fcn.00404360
add esp, 4
test al, al
jne 0x40db91
mov ecx, edi
call fcn.0040a450
test al, al
jne 0x40db91
mov eax, dword [edi]
test eax, eax
jne 0x40da00
jmp 0x40d9b8
cmp eax, ecx
mov dword [ebp - 0x14], esi
lea esi, [esi + 2]
mov dword [ebp - 0x1c], edi
mov dword [ebp - 0x18], ebx
cmova ecx, eax
xor edx, edx
neg ecx
mov dword [ebp - 0x20], ecx
xor ecx, ecx
nop dword [eax]
mov eax, dword [ebp - 0x20]
add eax, esi
cmp eax, 1
je 0x40db54
movzx eax, byte [ebx + esi - 1]
cmp al, 0x5f
je 0x40daee
mov bl, 1
mov dword [ebp - 0x10], ebx
mov ebx, eax
add bl, 0xd0
cmp bl, 0xa
jb 0x40dab6
mov ah, al
add ah, 0x9f
cmp ah, 0x1a
jae 0x40daa4
add al, 0xa9
jmp 0x40dab4
mov ah, al
add ah, 0xbf
cmp ah, 0x1a
jae 0x40db59
add al, 0xe3
mov ebx, eax
mov eax, edx
mov edx, 0x3e
mul edx
mov edx, 0x3e
mov edi, eax
mov eax, ecx
seto bh
mul edx
add edx, edi
mov edi, dword [ebp - 0x1c]
setb cl
or cl, bh
mov dword [edi + 8], esi
jne 0x40db59
mov ecx, eax
movzx ebx, bl
inc esi
add ecx, ebx
mov ebx, dword [ebp - 0x18]
adc edx, 0
jae 0x40da70
jmp 0x40db59
add ecx, 1
mov dword [edi + 8], esi
adc edx, 0
jb 0x40db54
mov esi, dword [ebp - 0x14]
cmp ecx, esi
sbb edx, 0
jae 0x40db54
mov eax, dword [edi + 0xc]
inc eax
cmp eax, 0x1f4
ja 0x40db98
cmp dword [edi + 0x10], 0
je 0x40dbb1
movsd xmm0, qword [edi]
movsd xmm1, qword [edi + 8]
mov dword [edi + 8], ecx
mov ecx, edi
mov dword [edi + 0xc], eax
movsd qword [ebp - 0x28], xmm1
movsd qword [ebp - 0x30], xmm0
call fcn.0040d950
movsd xmm0, qword [ebp - 0x30]
movsd xmm1, qword [ebp - 0x28]
movsd qword [edi], xmm0
movsd qword [edi + 8], xmm1
jmp 0x40d9ba
mov al, 1
mov dword [ebp - 0x10], eax
xor eax, eax
mov ecx, dword [edi + 0x10]
test ecx, ecx
je 0x40dba8
mov ebx, dword [ebp - 0x10]
mov esi, eax
mov eax, str.invalid_syntaxrecursion_limit_reached
mov edx, 0x7f31e4
test bl, bl
cmovne edx, eax
xor bl, 1
movzx eax, bl
lea eax, [eax + eax*8]
or eax, 0x10
push eax
call fcn.00404360
add esp, 4
test al, al
mov eax, esi
je 0x40dba8
mov bl, 2
jmp 0x40d9b8
mov al, 1
mov dword [ebp - 0x10], 0
mov ecx, dword [edi + 0x10]
test ecx, ecx
jne 0x40db62
mov dword [edi], 0
mov byte [edi + 4], al
xor ebx, ebx
jmp 0x40d9b8
inc ecx
mov dword [edi + 8], ecx
jmp 0x40d9b8