Function at 0x40d960
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 0x40d9bb
mov ecx, dword [edi + 4]
mov esi, dword [edi + 8]
cmp esi, ecx
jae 0x40d9bb
movzx eax, byte [ebx + esi]
cmp eax, 0x49
je 0x40d9d2
cmp eax, 0x42
jne 0x40d9bb
lea eax, [esi + 1]
cmp eax, ecx
mov dword [edi + 8], eax
jae 0x40da5f
cmp byte [ebx + eax], 0x5f
jne 0x40da5f
lea eax, [esi + 2]
xor ecx, ecx
xor edx, edx
mov dword [edi + 8], eax
cmp ecx, esi
sbb edx, 0
jb 0x40db13
jmp 0x40db64
mov ecx, edi
xor edx, edx
call fcn.00408d00
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.00408d00
test al, al
jne 0x40dba1
mov ecx, dword [edi + 0x10]
test ecx, ecx
je 0x40da05
mov edx, 0x7f8114
push 1
call fcn.00404370
add esp, 4
test al, al
jne 0x40dba1
mov eax, dword [edi]
mov bl, 1
test eax, eax
je 0x40d9c8
xor esi, esi
nop
mov ecx, dword [edi + 8]
cmp ecx, dword [edi + 4]
jae 0x40da22
cmp byte [eax + ecx], 0x45
je 0x40dbc8
sub esi, 1
jb 0x40da45
mov ecx, dword [edi + 0x10]
test ecx, ecx
je 0x40da45
mov edx, 0x7f8418
push 2
call fcn.00404370
add esp, 4
test al, al
jne 0x40dba1
mov ecx, edi
call fcn.0040a460
test al, al
jne 0x40dba1
mov eax, dword [edi]
test eax, eax
jne 0x40da10
jmp 0x40d9c8
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 0x40db64
movzx eax, byte [ebx + esi - 1]
cmp al, 0x5f
je 0x40dafe
mov bl, 1
mov dword [ebp - 0x10], ebx
mov ebx, eax
add bl, 0xd0
cmp bl, 0xa
jb 0x40dac6
mov ah, al
add ah, 0x9f
cmp ah, 0x1a
jae 0x40dab4
add al, 0xa9
jmp 0x40dac4
mov ah, al
add ah, 0xbf
cmp ah, 0x1a
jae 0x40db69
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 0x40db69
mov ecx, eax
movzx ebx, bl
inc esi
add ecx, ebx
mov ebx, dword [ebp - 0x18]
adc edx, 0
jae 0x40da80
jmp 0x40db69
add ecx, 1
mov dword [edi + 8], esi
adc edx, 0
jb 0x40db64
mov esi, dword [ebp - 0x14]
cmp ecx, esi
sbb edx, 0
jae 0x40db64
mov eax, dword [edi + 0xc]
inc eax
cmp eax, 0x1f4
ja 0x40dba8
cmp dword [edi + 0x10], 0
je 0x40dbc1
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.0040d960
movsd xmm0, qword [ebp - 0x30]
movsd xmm1, qword [ebp - 0x28]
movsd qword [edi], xmm0
movsd qword [edi + 8], xmm1
jmp 0x40d9ca
mov al, 1
mov dword [ebp - 0x10], eax
xor eax, eax
mov ecx, dword [edi + 0x10]
test ecx, ecx
je 0x40dbb8
mov ebx, dword [ebp - 0x10]
mov esi, eax
mov eax, str.invalid_syntaxrecursion_limit_reached
mov edx, 0x7f83e4
test bl, bl
cmovne edx, eax
xor bl, 1
movzx eax, bl
lea eax, [eax + eax*8]
or eax, 0x10
push eax
call fcn.00404370
add esp, 4
test al, al
mov eax, esi
je 0x40dbb8
mov bl, 2
jmp 0x40d9c8
mov al, 1
mov dword [ebp - 0x10], 0
mov ecx, dword [edi + 0x10]
test ecx, ecx
jne 0x40db72
mov dword [edi], 0
mov byte [edi + 4], al
xor ebx, ebx
jmp 0x40d9c8
inc ecx
mov dword [edi + 8], ecx
jmp 0x40d9c8