ida-genesis

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Suite of IDA scripts for SEGA Genesis ROM hacking

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# ida-genesis

## Description

This project consists of a suite of IDA scripts that assist in SEGA Genesis ROM hacking.

## SEGA Genesis ROM Loader

`sg_smd.py` is a IDA SEGA Genesis ROM loader. To use it, move it to your IDA `loaders` directory and load a ROM.

[![SG/SMD ROM Loader](https://raw.githubusercontent.com/zznop/ida-genesis/master/screenshots/loader.png "SG/SMD ROM Loader")]

## Branch Table Enumeration

`pcr-branch-table.py` is a IDA script that locates and disassembles a specific branch table pattern that auto-analysis
sometimes misses. The pattern consists of a PC-relative branch to a instruction in the table that in turn, branches
to another routine.

After auto-analysis:

[![Missed Branch Table](https://raw.githubusercontent.com/zznop/ida-genesis/master/screenshots/pcr-branch-table-before.png "Before")]

After running `pcr-branch-table`:

[![Scripted Branch Table Analysis](https://raw.githubusercontent.com/zznop/ida-genesis/master/screenshots/pcr-branch-table-after.png "After")]

ida-genesis

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