If the address you're looking for is smaller than 8 bytes, the chance that the scan has skipped that address is big.įloat/Single (32-bits) (IEEE standard) a "Single" value can hold a number between 1.5 x 10^-45 and 3.4 x 10^38. Some programs do use them though, and scanning for a "8-byte" value doesn't return many addresses, so finding the right one is easy then. So doing a 4-byte scan will normally give the best results.Ĩ bytes (64-bits / QWORD) a "8 byte" value can hold a number between 92233720368547758372036854775807 (no need for unsigned values anymore) "8 bytes" aren't used often because they take up a lot of space, and require extra processing.
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Of course, the number of initial addresses you'll find doing a 1 byte scan is very big, and it will take a while to find the address you're looking for, but at least the change of finding it is higher.Ģ bytes (16-bits / WORD) a "2 Byte" value can hold a number between 6 or -32768 to 32767 (The last one if it is a signed value) "2 byte" values are used in old dos games, and other 16-bit applications.Ĥ bytes (32-bits / DWORD) a "4 byte" value can hold a number between 0.4294967295 or -21474836483647 (The last one if it is a signed value) "4 byte" values are the standard way of storing information in a windows system. Even though a 1-byte scan seems useless, it will normally find the value when you don't know for sure if the value is either 1-byte, 2-bytes, 4-bytes, or 8-bytes, that is because all those types are build from this base type.
(The last one if it is a signed value) 1-byte values aren't used much except for 8-bit emulators, etc. Now, if you look at the above example you'll notice that the binary value of 100 does apear in the binary that represents 100, but has a 1 as last bit, and the first few bits are random (read from right to left), same for 200 and 300, with the binary scan you can scan for the binary representation of the values 100-200 or 300.īyte (8-bits) A byte is a value that can hold a number between 0 and 255 or -128 to 127.
Lets say a program stores the following values as follow:Īlso note that in normal binary notation the following values are: The range of a bitscan can be as long as you like. This allows you to do a search like 1101?001, which will give the results of all addresses+bit that have either 11010001 or 11011001. Binary The binary scan is a slow but powerful scan.Īlso, if you want to search for a array of bits that possible too, it even allows wildcard(?,*) instead of the normal 1's and 0's.
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