Cheat Engine

Instantflash · Posted: Fri Jun 27, 2008 5:25 pm Post subject: Checksums

00 00 00 20 00 43 FF FF 00 44 00 01 C7 C2 01 00 05 70 75 72 73 65 00 6A 00 2B 3D 14 00 08 E3 27

00 00 00 20 00 43 FF FF 00 44 00 01 C7 C2 01 00 05 70 75 72 73 65 00 6A 00 2B 3D 14 00 08 E3 40

00 00 00 20 00 43 FF FF 00 44 00 01 C7 C2 01 00 05 70 75 72 73 65 00 6A 00 2B 3D 14 00 08 E3 59

00 00 00 20 00 43 FF FF 00 44 00 01 C7 C2 01 00 05 70 75 72 73 65 00 6A 00 2B 3D 14 00 08 E3 72

The byte at the end is the checksum.... is there anyway to bypass that? Would I have to use something like olly to see how those are caculated? If so, is there any good noob-friendly tutorials about using olly, maybe for finding the checksum?

Symbol · Posted: Fri Jun 27, 2008 5:42 pm Post subject:

Weird, looks like it adds 0x19 (25) everytime. (0x27 + 0x19 = 0x40, +0x19 = 0x59, +0x19 = 72)

Who knows, it might be just a coincidence.

Send the packet a few more times, see if its:
8B
A4
BD
and so on...

Instantflash · Posted: Sat Jun 28, 2008 3:57 pm Post subject:

Alright, I'm getting extremly close, I was stumped on what you said eariler about the 0x19, but I finly figured out, that when the hex is decoded into dec (I used translator, binary), it increases by 25. I sent the packet a few more times, increasing the dec by 25 and encoding it to hex. But when I used that number at the end, and sent it, it still d/c'd me..