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Linux Debuggers

Tool name:

IDA Pro

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Rating: 5.0 (3 votes)

Author:

Ilfak Guilfanov

Website:

http://www.hex-rays.com/idapro

Current version:

5.2

Last updated:

November 26, 2007

Direct D/L link:

N/A

License type:

Commercial

Description:

The IDA Pro Disassembler and Debugger is an interactive, programmable, extendible, multi-processor disassembler hosted on Windows or on Linux. IDA Pro has become the de-facto standard for the analysis of hostile code, vulnerability research and COTS validation.

There is also a free (crippled) version available (IDA Pro Free). See its own entry in the library for more info.

As of January 7, 2007, the official IDA Pro website moved from the old URL (http://www.datarescue.com/idabase) to the one listed above.

Also listed in:

.NET Disassemblers, Disassemblers, Linux Disassemblers, Mobile Platform Debuggers, Mobile Platform Disassemblers, Ring 3 Debuggers

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Tool name:

EDB Linux Debugger

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Rating: 5.0 (1 vote)

Author:

Evan Teran

Website:

http://www.codef00.com/projects.php#Debugger

Current version:

0.8.22

Last updated:

January 17, 2008

Direct D/L link:

http://www.codef00.com/projects/debugger-0.8.22.tgz

License type:

Free / Open Source

Description:

Features
* Intuitive GUI interface
* The usual debugging operations (step-into/step-over/run/break)
* Conditional breakpoints
* Debugging core is implemented as a plugin so people can have drop in replacements. Of course if a given platform has several debugging APIs available, then you may have a plugin that implements any of them.
* Basic instruction analysis
* View/Dump memory regions
* Effective address inspection
* The data dump view is tabbed, allowing you to have several views of memory open at the same time and quickly switch between them.
* Importing of symbol maps
* Plugins
o Search for binary strings
o Code Bookmarks
o Breakpoint management
o Check for updates
o Environment variable viewer
o Heap block enumeration
o Opcode search engine plugin has basic functionality (similar to msfelfscan/msfpescan)
o Open file enumeration
o Reference finder
o String searching (like strings command in *nix)

One of the main goals of this debugger is isolation of the debugger core from the display you see. The interface is written in QT4 and thus source portable to many platforms. The debugger core is actually a plugin and the platform specific code is isolated to just a few files, porting to a new OS would require porting these few files and implementing a plugin which implements the "DebuggerCoreInterface" interface. Also, because the plugins are based on the QPlugin API, and do their work through the DebuggerCoreInterface object, they are almost always portable with just a simple recompile. So far, the only plugin I have written which would not port with just a recompile is the heap analysis plugin, due to it's highly system specific nature.

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(Not listed in any other category)

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Tool name:

ERESI Framework

Currently0/5
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Rating: 0.0 (0 votes)

Author:

The ERESI Project

Website:

http://www.eresi-project.org

Current version:

0.8a23

Last updated:

November 30, 2007

Direct D/L link:

N/A

License type:

Free / Open Source

Description:

The ERESI Reverse Engineering Software Interface is a unified multi-architecture binary analysis framework targeting operating systems based on the Executable & Linking Format (ELF) such as Linux, *BSD, Solaris, HP-UX, IRIX and BeOS.

ERESI is a general purpose hybrid framework : it includes both static analysis and runtime analysis capabilities. These features are accessed by primitives of the ERESI reverse engineering language which makes the framework more adaptable to the precise needs of her users. It brings an environment of choice for program analysis throught instrumentation, debugging, and tracing as it also provides more than ten exclusive major built-in features . ERESI can also be used for security auditing, hooking, integrity checking or logging binary programs. The project prones modularity and reusability of code and allows users to create their own project on top of the ERESI language interpreter in just a few lines. Among other features, the base code can display program graphs on demand using its automated flow analysis primitives. Our tools are enhanced for hardened or raw systems which have no executable data segments and no native debug API or even explicit program information.

The ERESI framework includes:

* The ELF shell (elfsh), an interactive and scriptable ERESI interpreter dedicated to instrumentation of ELF binary files.
* The Embedded ELF debugger (e2dbg), an interactive and scriptable high-performance userland debugger that works without standard debug API (namely without ptrace).
* The Embedded ELF tracer (etrace), an interactive and scriptable userland tracer that works at full frequency of execution without generating traps.
* The Kernel shell (kernsh), an interactive and scriptable userland ERESI interpreter to inject code and data in the OS kernel, but also infer, inspect and modify kernel structures directly in the ERESI language.
* The Evarista static analyzer, a work in progress ERESI interpreter for program transformation and data-flow analysis of binary programs directly implemented in the ERESI language (no web page yet).

Beside those top-level components, the ERESI framework contains various libraries that can be used from one of the previously mentioned tools, or in a standalone third-party program:

* libelfsh : the binary manipulation library on which ELFsh, E2dbg, and Etrace are based.
* libe2dbg : the embedded debugger library which operates from inside the debuggee program.
* libasm : the disassembly engine (x86 and sparc) that gives semantic attributes to instructions and operands.
* libmjollnir : the code fingerprinting and graph manipulation library.
* librevm : the Reverse Engineering Vector Machine, that contains the meta-language interpretor and the standard ERESI library.
* libaspect : the type system and aspect library. It can define complex data-types to be manipulated ad-hoc by ERESI programs.
* libedfmt : the ERESI debug format library which can convert dwarf and stabs debug formats to the ERESI debug format by automatically generating new ERESI types.

Also listed in:

Reverse Engineering Frameworks, Linux Disassemblers, Tracers, Code Injection Tools

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Tool name:

Fenris

Currently0/5
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Rating: 0.0 (0 votes)

Author:

lcamtuf

Website:

http://lcamtuf.coredump.cx/fenris

Current version:

0.07-m2 build 3245

Last updated:

July 11, 2004

Direct D/L link:

Locally archived copy

License type:

Free / Open Source

Description:

Fenris is a suite of tools suitable for code analysis, debugging, protocol analysis, reverse engineering, forensics, diagnostics, security audits, vulnerability research and many other purposes. The main logical components are:

* Fenris: high-level tracer, a tool that detects the logic used in C programs to find and classify functions, logic program structure, calls, buffers, interaction with system and libraries, I/O and many other structures. Fenris is mostly a "what's inside" tracer, as opposed to ltrace or strace, tracers intended to inspect external "symptoms" of the internal program structure. Fenris does not depend on libbfd for accessing ELF structures, and thus is much more robust when dealing with "anti-debugging" code.

* libfnprints and dress: fingerprinting code that can be used to detect library functions embedded inside a static application, even without symbols, to make code analysis simplier; this functionality is both embedded in other components and available as a standalone tool that adds symtab to ELF binaries and can be used with any debugger or disassembler.

* Aegir: an interactive gdb-alike debugger with modular capabilities, instruction by instruction and breakpoint to breakpoint execution, and real-time access to all the goods offered by Fenris, such as high-level information about memory objects or logical code structure.

* nc-aegir: a SoftICE-alike GUI for Aegir, with automatic register, memory and code views, integrated Fenris output, and automatic Fenris control (now under development).

* Ragnarok: a visualisation tool for Fenris that delivers browsable information about many different aspects of program execution - code flow, function calls, memory object life, I/O, etc (to be redesigned using OpenDX or a similar data exploration interface).

* ...and some other companion utilities.

Also listed in:

Reverse Engineering Frameworks, Linux Disassemblers, Tracers

More details:

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Tool name:

radare

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Rating: 0.0 (0 votes)

Author:

pancake

Website:

http://radare.nopcode.org

Current version:

0.9.3

Last updated:

February 19, 2008

Direct D/L link:

http://radare.nopcode.org/get/radare-0.9.3.tar.gz

License type:

GPL

Description:

The radare project aims to provide a complete unix-like toolchain for working with binary files. It currently provides a set of tools to work with x86, arm and java with some ones powerpc.

The core is a raw hexadecimal editor for commandline with scripting features and perl/python extensions that gets extended with IO plugins that hooks the open/read/write/close/system calls.

The debugger and disassembler has a code analysis module for x86, arm and java. This way it's possible to draw graphs using Cairo on a GTK window or store the flow execution of a program on a log file and use the information to diff't against another trace or binary.

The toolchain provides assemblers and disasemblers for x86, arm and java.

The disassembler has been enhaced to handle inline comments, code block detections and flag references (data pointers or so).

The debugger currently works on linux,*bsd x86-32 but it has initial support for x86-64 and linux-ARM, and w32 support is in mind too.

But there are IO plugins for debugging windows and DOS applications via wine and dosemu. Initial gxemul support gives us the possibility to also debug ARM, MIPS, SPARC, .. binaries.

There are some internal commands to handle memory maps, mount a syscall proxy, inject code, patch data, dump user data sections, step-back, syscall tracing, hardware DRx register manipulation, conditional watchpoints with expressions, signalling manipulation, syscall injection and very early threading support..

Data structures can be parsed with hand-written C programs called as extensions from radare. So the hexadecimal editor comes with a set of views for different bases and print formats like URL-encoding, binary, octal, shellcode, C string-like, which is really useful for developing shellcodes.

There's a minimal GUI frontend written in C that interacts directly with an VTE running radare. But I plan to write a new native frontend written in Vala.

Current development plugins are:

* ewf: EnCase (R) forensic disk images
* winedbg: WineDebugger interface ( winedbg://./program.exe )
* haret: Remotely read WindowsCE memory ( haret://host:port )
* ptrace: Debugs or attach to a process ( dbg://file or pid://PID )
* sysproxy: Connects to a remote syscallproxy server
* remote: TCP IO ( listen://:port or connect://host:port )
* gdb: Debugs or attach to a process using gdb (gdb://file, gdb://PID, gdb://host:port)
* w32: posix to native w32 api io
* posix: plain posix file access

The tools provided around the core are:

* radare: command line hexadecimal editor with IO plugin extensions
* rabin: get info from ELF/MZ/PE/CLASS files
* rasc: shellcode generator and tester (outputs in raw, hexpairs or C)
* bindiff: binary diffing utilities for raw files, binaries, data blocks, etc
* xrefs: find crossed references on raw images for ppc, arm and x86
* hasher: calculate different algorithms over data blocks of a file or stream
* rsc: command line helpers written in shellscript or perl
* javasm: minimalistic java assembler/disassembler/classdumper
* armasm: minimalistic arm assembler
* xc: converts between multiple radix numeric bases

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Have fun!

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