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CHANGELOG.md

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Change Log

All notable changes to this project will be documented in this file.

Unreleased

Added

  • Add hook support to the Emulator class.
  • Add cconv (calling convention) module.
  • Add ReilCpu tests.
  • Add replay tool to replay x86 execution traces.
  • Add x86.trace module.
  • Add x86.helper module.
  • Add kao's toy project solution to the examples folder.
  • Add flare-on 2015 challenge #2 solution to the examples folder.
  • Add basic symbolic execution support.
  • Add extra methods to ReilSequence and ReilContainer classes.
  • Improve hook support of the Emulator class.
  • Add support for SHLD instruction.

Changed

  • Improve emulate-binary example script.
  • Refactor ReilBuilder class.
  • Refactor instruction translators (both Intel and ARM). Group translators by category and create a module for each one.
  • Improve Emulator class.
  • Refactor ReilCpu tests.
  • Rename bi module to binary.
  • Refactor Disassembler class.
  • Refactor ReilEmulatorTainter class.
  • Refactor ReilCpu class.
  • Refactor reil.helpers module.
  • Refactor ReilContainer class.
  • Refactor ReilBuilder class.
  • Refactor reil.tainter module.
  • Refactor ReilCpu class.
  • Refactor reil.parser test module.
  • Refactor reil.emulator test module.
  • Rename basicblock package (and tests) to graphs.
  • Rename gadget package (and tests) to gadgets.
  • Rename reilparser module to reil.parser.
  • Refactor reilemulator module. Split module into submodules: emulator.cpu, emulator.emulator, emulator.memory, and emulator.tainter.
  • Refactor arch.emulator module.

Deprecated

Removed

  • Remove DualInstruction class.

Fixed

  • Fix RSB ARM instruction.
  • Fix control-flow graph rendering.
  • Fix SHRD translation.
  • Fix size of effective address calculation for Intel architecture.
  • Fix SHL and SHR instruction translator.

Security

0.5.0 - 2017-12-18

Added

  • Add architecture emulator class.
  • Add support for Travis CI.
  • Add tests for the smt package.
  • Add svg ouput format for BARFcfg and BARFcg tools.
  • Add Dockerfile.
  • Add support for x86 instructions: LAHF, XADD.
  • Add support for x86 sse instructions: LDDQU, MOVAPS, MOVSD.

Changed

  • Restructure examples directory and remove redundant examples.
  • Restructure tools directory and move it into barf package.
  • Overall code quality improvement in most modules.
  • Revamp smt package.
  • Refactor codeanalyzer module.
  • Improve code quality of basicblock module.
  • Restructure binary sample directory.
  • Load all sections of a binary into memory by default.
  • Update ARM architecural information.
  • Refactor emulate method to support x86_64, ARM and Thumb code.

Fixed

  • Add BAL and BGT to the list of ARM branch instructions.
  • Fix Capstone installation issues.
  • Various fixes in the smt package.

Removed

  • Remove translation_mode parameter from x86/ARM translators.
  • Remove deprecated barf-install-solver.sh script.
  • Remove smtlibv2.py module dependency from PySymEmu.

0.4.0 - 2017-04-10

Added

  • Update README to include new command line options for all BARF tools.
  • Add initial support for x86 AVX instruction set.
  • Add support for x86 instructions: BSF, BSWAP, BTS, CDQ, MOVSXD and SHRD.
  • Add support for x86 SSE instructions: MOVD, MOVDQA, MOVDQU, MOVHPD, MOVLPD, MOVQ, PCMPEQB, PMINUB, PMOVMSKB, POR, PSHUFD, PSLLDQ, PSRLDQ, PSUBB, PUNPCKLBW, PUNPCKLWD, PUNPCKLQDQ and PXOR.
  • Add initial support for x86 SSE instruction set.
  • Add support for pdf, png and dot output formats in BARFcfg and BARFcg tools.
  • Add option to display immediate operand values in hex and dec to the CFG rendering.
  • Add REIL instruction index to the CFG rendering.
  • Add support for missing x86 flag translations: AF and PF.
  • Add new method to the ArchitectureInformation class to retrieve information about syscall instructions.
  • Add new x86 example for finding and executing functions.
  • Add new methods to the CallGraph class.
  • Add initial support for GS and FS segments access (x86).

Changed

  • Improve coding style and code quality of the reil module.
  • Improve coding style and code quality of the reilemulator module.
  • Remove SMT requirement (an exception is raised when trying to use related functionality).
  • Improve coding style and code quality of the x86 package.
  • Improve emulate_full method to support any piece of code.
  • Refactor _open_elf logic in the BinaryFile class by @Seraphime.

Fixed

  • Fix missing check on recover_cfg function parameters.
  • Update missing branch instructions in the X86ArchitectureInformation class.
  • Fix x86 instruction translation: SAR, SHR, SHL, ROR, MOVZX and MOV.
  • Fix x86 gadget finding function.
  • Fix various typos.
  • Fix x86 REP prefix parsing.

0.3 - 2016-12-13

Added

  • Add new BARF tool, BARFcg, for CG recovery.
  • Add support for CG recovery (x86 and ARM).
  • Add new BARF tool, BARFcfg, for CFG recovery.
  • Add support for ARM CFG recovery.
  • Add support for more ARM instructions.
  • Add support for data tainting in ReilEmulator.
  • Add support for pre/post instruction execution callback function in ReilEmulator.
  • Add support for REIL extension instruction (SEXT, SDIV, SMOD).
  • Add support for more x86 instructions.

Changed

  • Improve CFG recovery functionality.
  • Refactor basickblock module.
  • Replace PyBFD with PyELFTools.
  • Improve SMT performace.
  • Refactor smtlibv2 module.
  • Overall directory restructure.
  • Improve ARM disassembly integration to Capstone Engine.
  • Overall improvements to CFG recovery and rendering.
  • Refactor reilemulator module.
  • Overall improvements to package's tests.

Fixed

  • Multiple bug fixes.

Removed

  • Remove PyAsmJIT package from the repository (move to its own repo).

0.2.1 - 2015-04-07

Fixed

  • Fix Python logging module setup issue.

0.2 - 2015-04-06

Added

  • BARFgadgets now find gadgets in ARM binaries.
  • Add support for the ARM architecture (32 btis).
  • Add support for more x86 instructions.
  • Memory consumption reduction through the use of __slots__.
  • BARFgadgets now supports gadgets ending in RET imm16, JMP and CALL instructions.

Changed

  • Overall improvements to x86 package (major changes that ended up in performance increase of translation up to 3x!).
  • Overall improvements to reil package (minor changes).
  • New reil translation scheme for x86 instructions.
  • x86translator and x86instructiontranslator modules were merged.
  • Some methods of X86ArchitectureInformation class were renamed to improve naming consistency.
  • x86 flags are now represented using a single bit (instead of one byte). Also, each flag (CF, ZF, etc.) is now an alias of the correspondent bit of the {e/r}flags register.

Fixed

  • Fixes in x86 instruction translations (mostly flags update issues.)
  • Fix missing registers in X86ArchitectureInformation class.
  • Fix SMT translation for STR instruction when dst operand is bigger than src operand.

Removed

  • x86instruction and x86intructiontranslator modules were removed.

0.1 - 2014-11-19

Added

  • First release.