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check_address.md

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description
Description of the 'check_address' function in HyperDbg Scripts

check_address

Function

check_address

Syntax

check_address( Expression );

Parameters

[Expression (Address)]

A MASM-like expression to evaluate which is the address of the target location to check.

Description

Checks an address to see if the address is valid and safe to access from or not.

Return value

If the address is valid and safe it returns 1. If the address is invalid or not safe to access then it returns 0.

Examples

IsValid = check_address(@rcx + 10);

Adds 0x10 to the rcx register and checks whether it's a valid and safe address or not and safety and saves the result into IsValid variable.

IsValid = check_address(dq(@rcx));

Checks address as an 8-byte hex, pointed by rcx register and safety and saves the result into IsValid variable.

IsValid = check_address(0xffff83811f265040);

Checks 0xffff83811f265040 address for validity and safety and saves the result into IsValid variable.

You can also use this function with an if statement.

if (check_address(@r11) == 1) 
{ 
    printf("address is valid.\n");
}
else 
{
    printf("address is invalid.\n");
}

Remarks

None

Related

None