We Talk Coding
How to reverse engineer algorithm, regardless the programming language?
My friend put a challenge on me to crack his algorithm. He provides an ID number and his algorithm generates virtually unlimited 8 digits passwords. Any passwords as long as it matches the algorithm, will grant access, which mean I win. Is there any method to reverse engineer this algorithm, regardless the programming language?
Public Comments
- yes... if you have an executable (that is, he didn't write it in something interpreted like java, c#, or a scripting language) then you can use the linux utility objdump to dump the assembly to a file... then use gdb with breakpoints to walk through the code and deduce the algorithm
- Or, if yer on Windows, you can use Ida to do the same thing on a windows platform.
- Sometimes you can load the .exe into something like Visual Studio 2005 Express (free) and look at the assembler statements. Very difficult.
