before i'am explain about olly debugger you mus know about debugger, debuger is a special program used to find errors (bugs) in other programs and ollydbg is one of tools of debugger.
OllyDbg is an x86 debugger that emphasizes binary code analysis, which is useful when source code is not available. It traces register, recognizes procedure , API calls, switches, tables, constant and strings, as well as locates routines from object files and libraries
OllyDbg is often used for reverse engginering of programs.It is often used by crackers to carck software made by other developers. For cracking and reverse engineering, it is often the primary tool because of its ease of use and availability. It is also useful for programmers to ensure that their program is running as intended.
to try using OllyDbg
1. download OllyDbg in here
2. extract zip file
3. double click on in ollydbg
result of running OllyDbg
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