Jump to content
Tuts 4 You

2 Screenshots

About This File

OllyDbg is a 32-bit assembler level analysing debugger for Microsoft® Windows®. Emphasis on binary code analysis makes it particularly useful in cases where source is unavailable. OllyDbg is a shareware, but you can download and use it for free. Special highlights are:

  • Intuitive user interface, no cryptical commands
  • Code analysis - traces registers, recognizes procedures, loops, API calls, switches, tables, constants and strings
  • Directly loads and debugs DLLs
  • Object file scanning - locates routines from object files and libraries
  • Allows for user-defined labels, comments and function descriptions
  • Understands debugging information in Borland® format
  • Saves patches between sessions, writes them back to executable file and updates fixups
  • Open architecture - many third-party plugins are available
  • No installation - no trash in registry or system directories
  • Debugs multithread applications
  • Attaches to running programs
  • Configurable disassembler, supports both MASM and IDEAL formats
  • MMX, 3DNow! and SSE data types and instructions, including Athlon extensions
  • Full UNICODE support
  • Dynamically recognizes ASCII and UNICODE strings - also in Delphi format!
  • Recognizes complex code constructs, like call to jump to procedure
  • Decodes calls to more than 1900 standard API and 400 C functions
  • Gives context-sensitive help on API functions from external help file
  • Sets conditional, logging, memory and hardware breakpoints
  • Traces program execution, logs arguments of known functions
  • Shows fixups
  • Dynamically traces stack frames
  • Searches for imprecise commands and masked binary sequences
  • Searches whole allocated memory
  • Finds references to constant or address range
  • Examines and modifies memory, sets breakpoints and pauses program on-the-fly
  • Assembles commands into the shortest binary form
  • Starts from the floppy disk

and much, much more!


What's New in Version 2.01h   See changelog

Released

New version with many new features, among them:

  • Help on 77 pages. Please read it first - most of new features are described there
  • Multilanguage GUI (experimental, as yet no translation files - please do it by yourself)
  • Support for AVS instuctions (as yet no AVS2 and high 16 bytes of YMM registers are not displayed)
  • Call stack window (similar to the version 1.10)
  • Handles window (similar to the version 1.10)
  • SEH and VEH chains. To decode addresses of VEH handlers, OllyDbg hacks NTDLL.RtlAddVectoredExceptionHandler(), therefore process must be started from the OllyDbg
  • Multibyte character dumps
  • .udl image libraries, replace scan of object files from v1.10
  • Search for integers and floats in dump
  • Search for procedures (entry points)
  • Limited support for NTFS streams
  • Drive dump
  • Software breakpoints that use INT1, HLT, CLI, STI or INSB instead of INT3
  • Multiple watches in one line, support for repeat count
  • Dump of arrays of structures
  • Micro-analysers
  • Accelerated search
  • Assembling of immediate data statements (DB xx etc.)
  • Highlighting in run trace
  • Up to 2 ordinals per address
  • Limited support for Win95 via Microsoft Layer for UNICODE
  • More tricky code sequences
  • Show free memory, or was it the previous version?
  • Multiple bugfixes

Yes, you understand it correctly. OllyDbg graphic interface supports multiple languages. All you need is the corresponding language file. Currently there are none, but I expect that the volunteers will be able to make more or less complete translations.

Plugins compiled for OllyDbg 2.01 beta are 100% compatible with v2.01. PDK will be updated... soon...

Preliminary version of Disassembler 2.01 is almost ready. That is, the sources are more or less final but documentation and ready-to-use DLLs are still missing. I release Disasm 2.01 under GPL v3. Commercial licenses are also possible.


User Feedback

Recommended Comments

There are no comments to display.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...