blaze

Interactive CLI assembler for identifying bad ("blaze") bytes in instruction encodings.

Dependencies

• keystone -- pip install keystone-engine

Usage

Startup

• python blaze.py - configured for mip32 (little) with no blaze bytes set

Blaze commands

Command	Description
:arch	Displays supported architectures, changes architecture
:endian	Change endianness
:config	Displays current blaze configuration
:dbb	Displays blaze byte list (in decimal)
:sbb	Sets the blaze byte list (in decimal)
:rbb	Resets the blaze byte list to None
:help	Displays list of commands
:quit	Quits the program (or use CTRL-C)
instruction	Instructions to encode and blaze (; delimited)

Supported architectures

• MIPS, ARM, Thumb, & PowerPC

Screenshots

Configuring blaze to check for NULLs in MIPS32 little endian encodings

Reconfigure blaze to ARM big endian and highlight blaze bytes

Quickly blaze bad bytes in a sequence of instructions (no need to assemble and inspect objdump/hexdump output)