![]() In this first step, it relies on previous information to know in which format the firmware dump has been performed. Many of the analysis tools available, will be based on binary formats and obtaining a binary is an important task in case at some point you want to perform a full emulation of the device. The goal of this section is to convert that format into a raw binary format. Obtaining a raw binary dumpĭepending on the techniques used in step two ( OWASP FSTM, stage 2: Obtaining IOT device firmware) of this guide, the firmware dump may be in different formats. ![]() Finally, metrics, tools and techniques that allow us to identify sections, formats and signatures within a firmware for later extraction are listed. A section is also dedicated to those cases in which our firmware may include more data than desired, which may alter the results of subsequent tests. Next, it is proposed to transform the available firmware dump format into a standardized binary format for further analysis. With this context in mind, it will be possible to make a judicious choice between the various tools and techniques here proposed for analyzing firmware. For this reason, it is important not to lose the context in which the analysis is performed and to consider all the information gathered in the previous steps. It is common during firmware analysis to be confronted with undocumented formats, proprietary solutions, and even encrypted data. Different techniques that can help extracting data from these dumps will be reviewed down below. Manual analysis with a hexadecimal editorĪnalyzing a firmware dump is not a simple task that can be summarized in simple steps to obtain a formula valid for all cases.
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