Igor’s tip of the week #28: Functions list

The Functions list is probably one of the most familiar features of IDA’s default desktop layout. But even if you use it every day, there are things you may not be aware of. Modal version Available via Jump > Jump to function… menu, or the Ctrl–P shortcut, the modal dialog lets you see the full width of the […]

Igor’s tip of the week #27: Fixing the stack pointer

As explained in Simplex method in IDA Pro, having correct stack change information is essential for correct analysis. This is especially important for good and correct decompilation. While IDA tries its best to give good and correct results (and we’ve made even more improvements since 2006), sometimes it can still fail (often due to wrong […]

Igor’s tip of the week #26: Disassembly options 2

Continuing from last week, let’s discuss other disassembly options you may want to change. Here’s the options page again: Disassembly line parts   This group is for options which control the content of the main line itself. Here is an example of a line with all options enabled: The marked up parts are: The line prefix (address of […]

Igor’s tip of the week #25: Disassembly options

By default IDA’s disassembly listing shows the most essential information: disassembled instructions with operands, comments, labels. However, the layout of this information can be tuned, as well as additional information added. This can be done via the Disassembly Options tab available via Options > General… menu (or Alt–O, G). Text and Graph views options If you open […]

Igor’s tip of the week #24: Renaming registers

While register highlighting can help tracking how a register is used in the code, sometimes it’s not quite sufficient, especially if multiple registers are used by a complicated piece of code. In such situation you can try register renaming. To rename a register: place the cursor on it and press N or Enter, or double-click it A dialog […]

Igor’s tip of the week #23: Graph view

Graph view is the default disassembly representation in IDA GUI and is probably what most IDA users use every day. However, it has some lesser-known features that can improve your workflow. Parts of the graph The graph consists of nodes (blocks) and edges (arrows between blocks). Each node roughly corresponds to a basic block. a basic block is a straight-line […]

Igor’s tip of the week #21: Calculator and expression evaluation feature in IDA

When reverse-engineering, sometimes you need to perform some simple calculations. While you can always use an external calculator program, IDA has a built-in one. You can invoke it by pressing ? or via View > Calculator. The calculator shows the result in hex, decimal, octal, binary and as a character constant. This information is also duplicated […]

Igor’s tip of the week #20: Going places

Even if you prefer to move around IDA by clicking, the G shortcut should be the one to remember. The action behind it is called simply “Jump to address” but it can do many more things than what can be guessed from the name. Jump to address First up is the actual jumping to an address: enter an […]

Igor’s tip of the week #18: Decompiler and global cross-references

Previously we’ve covered cross-references in the disassembly view but in fact you can also consult them in the decompiler (pseudocode) view. Local cross-references The most common shortcut (X) works similarly to disassembly: you can use it on labels, variables (local and global), function names, but there are some differences and additions: for local variables, the list of […]

Igor’s tip of the week #17: Cross-references 2

Cross references view The jump to xref actions are good enough when you have a handful of cross-references but what if you have hundreds or thousands? For such cases, the Cross references view may be useful. You can open it using the corresponding item in the View > Open Subviews menu. IDA will gather cross-references to […]