IDA Pro

Intro

IDA Pro combines an interactive, programmable, multi-processor disassembler coupled to a local and remote debugger and augmented by a complete plugin programming environment.

• Official page
• Windows, Linux, Mac OS X
• x86-32, x86-64, ARM and many others
• ELF, Java bytecode, Dalvik, ARM,...
• disassembler, some debugger

Resources

• The IDA Pro Book
• https://leanpub.com/IDAPython-Book
• Reverse Engineering Code with IDA Pro by IOActive
• https://duksctf.github.io/Make-IDA-Pro-Great-Again/

PIN Tracer

Install

Adapted from https://www.hex-rays.com/products/ida/support/tutorials/pin/pin_tutorial.pdf

apt-get install gcc-multilib g++-multilib
pushd pin-2.13-61206-gcc.4.4.7-linux/ia32/runtime
ln -s libelf.so.0.8.13 libelf.so
popd
pushd pin-2.13-61206-gcc.4.4.7-linux/intel64/runtime
ln -s libelf.so.0.8.13 libelf.so
popd
mkdir pin-2.13-61206-gcc.4.4.7-linux/source/tools/@idapin66
cd pin-2.13-61206-gcc.4.4.7-linux/source/tools/@idapin66
wget https://www.hex-rays.com/products/ida/support/freefiles/idapin66.zip
7z x idapin66.zip
make TARGET=ia32e
make TARGET=ia32

Usage

In IDA select "PIN Tracer" and configure it.

• Path to PIN: pin-2.13-61206-gcc.4.4.7-linux/pin
• Path to tool: pin-2.13-61206-gcc.4.4.7-linux/source/tools/@idapin66/

See PIN tutorial

Python

Based on idapython (shipped with IDA Pro)

Install for ida 6.5

Some require PySide as well
To install it on Linux for IDA Pro, see Hexblog, but let's install it locally in idapython instead of /
Download PySide 2011/12/30 for IDAPython 1.5+, Python 2.7 (2.6) and Qt 4.8.4 (IDA 6.5), Linux version

tar xvfz os_package_pyside_python27_package.tgz -C /path/to/ida

Install for ida 6.6

PySide is now also part of IDA Pro, nothing to do anymore :)

Patching

IDA Pro can natively patch code/data in its DB but not the original file, but you can do:

• patch in the DB:
  • Edit / Patch program / ...
• produce a diff file:
  • File / Produce file / Create DIF
• patch the file:
  • Edit / Patch program / Apply patches to input file
• patch the file from a DIF file:
  • see e.g. http://resources.infosecinstitute.com/applied-cracking-byte-patching-ida-pro/

See also plugins Fentanyl and idapatcher here below

Extensions

Development

• Adding full Qt support to Ida Pro (pdf)

ida-patcher

Make ida-patcher.py available in ida-6.6/plugins/

• View->Open subviews->Patches

Fentanyl

Easy patching!
See also here

File > Script file > Fentanyl/main.py

Alt-N      Convert instructions to nops
Alt-X      Nop all xrefs to this function
Alt-J      Invert conditional jump
Alt-P      Patch instruction
Alt-Z      Undo modification (Won't always work. Should still be careful editing.)
Alt-Y      Redo modification (Won't always work. Should still be careful editing.)
Alt-S      Save file
Alt-C      Find Code Caves
Ctrl-Alt-F Make jump unconditional
Ctrl-Alt-N Neuter the binary (remove calls to fork, setuid, setgid, getpwnam, set groups, and chdir)

Hex-Rays

The most expensivepowerful IDA Pro plugin is the Hex-Rays decompiler

• x86 and ARM
• decompiler

Limitations specific to ARM:

• floating point instructions are not supported
• VFP/SIMD/Neon/... instructions are not supported
• functions having an argument that is passed partially on registers and partially on the stack are not supported (e.g. int64 passed in R3 and on the stack)

Addons

• Python bindings and plugins
• HexRaysCodeXplorer

ida-decompiler

Decompile small functions in IDA

arm-thumb-decompiler

Mainly for Thumb right now

IDA Pro ARM debugger

Support ARM code debugging via JTAG or software emulators

Garts: Get all referenced text strings

aka A Better String Viewer

File > Script file > garts.py

IDA toolbag

• Under Linux put toolbag content under ~/.idapro

>>> import toolbag

Miasm

Some bridges between IDA and Miasm:

• Symbolic execution plugin
• Dependency graph plugin

Diaphora

A program diffing plugin, working with IDA 6.7 and 6.8
Doc here (pdf)
When running scritp I got this issue about importing md5.
To solve it I had to install manually libssl0.9.8:i386 from old Debian repo
As bonus, it exports IDA DBs in Sqlite format

WWCD

What Would Capstone Decode - IDA plugin that implements a Capstone powered IDA view

To sort

• IDAscope
• Zynamics bindiff
• patchdiff2 or here, couldn't get even the git version working on linux and IDA 6.8 (compiled after some patches but fail parsing IDA DB)
• DarunGrim, another binary diff tool, opensource but discontinued?
• x86emu, x86 Emulator plugin. Windows, Linux, OS X
• idapatchwork, emulator based on PyEmu (slides)
• epanos, a MIPS decompiler, for IDA > 6.5
• IDAStealth, anti-anti-debugging, for Windows
• IDA-sploiter, helps developing ROP exploits
• Plugin contests 2015, 2014, 2013, 2012, 2011, 2010, 2009
• dr.rer.oec.gadget, Develop and analyze ROP exploits for all processor architectures supported by IDA itself
• IDACompare
• IDAEye
• ADB Qt
• IDA IPython, An IDA Pro Plugin for embedding an IPython Kernel
• TurboDiff, a program diffing plugin
• IDA Pro Instruction Reference Plugin
• IDAtropy meant to generate charts of entropy and histograms
• GraphGrabber to grab full-resolution images of IDA graphs
• list
• list
• list

Debugging

IDA Pro has some debugging capabilities too.
Local debugging: win32, windbg Remote debugging:

gdbserver --multi <client_ip>:<port> # default IDA port: 23946

Then on IDA: select Remote GDB debugger, paths should be paths on the gdbserver host.
Tuning:

• Debugger / options / Stop on process entry point
• Compatible with lib preloading, cf below
• from 6.4, can make use of Intel PIN tools for diff debugging, see tutorial (pdf)

Android

• Dalvik debugger
• Remotely Debugging Android Binaries in IDA Pro