Claude-skill-registry idapython

Name: idapython
Author: majiayu000

IDA Pro Python scripting for reverse engineering. Use when writing IDAPython scripts, analyzing binaries, working with IDA's API for disassembly, decompilation (Hex-Rays), type systems, cross-references, functions, segments, or any IDA database manipulation. Covers ida_* modules (50+), idautils iterators, and common patterns.

install

source · Clone the upstream repo

git clone https://github.com/majiayu000/claude-skill-registry

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/majiayu000/claude-skill-registry "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/data/idapython-majiayu000-claude-skill-registr" ~/.claude/skills/majiayu000-claude-skill-registry-idapython && rm -rf "$T"

manifest: skills/data/idapython-majiayu000-claude-skill-registr/SKILL.md

IDAPython

Use modern

ida_*

modules. Avoid legacy

idc

module.

Module Router

Task	Module	Key Items
Bytes/memory	`ida_bytes`	`get_bytes` , `patch_bytes` , `get_flags` , `create_*`
Functions	`ida_funcs`	`func_t` , `get_func` , `add_func` , `get_func_name`
Names	`ida_name`	`set_name` , `get_name` , `demangle_name`
Types	`ida_typeinf`	`tinfo_t` , `apply_tinfo` , `parse_decl`
Decompiler	`ida_hexrays`	`decompile` , `cfunc_t` , `lvar_t` , ctree visitor
Segments	`ida_segment`	`segment_t` , `getseg` , `add_segm`
Xrefs	`ida_xref`	`xrefblk_t` , `add_cref` , `add_dref`
Instructions	`ida_ua`	`insn_t` , `op_t` , `decode_insn`
Stack frames	`ida_frame`	`get_frame` , `define_stkvar`
Iteration	`idautils`	`Functions()` , `Heads()` , `XrefsTo()` , `Strings()`
UI/dialogs	`ida_kernwin`	`msg` , `ask_*` , `jumpto` , `Choose`
Database info	`ida_ida`	`inf_get_*` , `inf_is_64bit()`
Analysis	`ida_auto`	`auto_wait` , `plan_and_wait`
Flow graphs	`ida_gdl`	`FlowChart` , `BasicBlock`
Register tracking	`ida_regfinder`	`find_reg_value` , `reg_value_info_t`

Core Patterns

Iterate functions

for ea in idautils.Functions():
    name = ida_funcs.get_func_name(ea)
    func = ida_funcs.get_func(ea)

Iterate instructions in function

for head in idautils.FuncItems(func_ea):
    insn = ida_ua.insn_t()
    if ida_ua.decode_insn(insn, head):
        print(f"{head:#x}: {insn.itype}")

Cross-references

for xref in idautils.XrefsTo(ea):
    print(f"{xref.frm:#x} -> {xref.to:#x} type={xref.type}")

Read/write bytes

data = ida_bytes.get_bytes(ea, size)
ida_bytes.patch_bytes(ea, b"\x90\x90")

Names

name = ida_name.get_name(ea)
ida_name.set_name(ea, "new_name", ida_name.SN_NOCHECK)

Decompile function

cfunc = ida_hexrays.decompile(ea)
if cfunc:
    print(cfunc)  # pseudocode
    for lvar in cfunc.lvars:
        print(f"{lvar.name}: {lvar.type()}")

Walk ctree (decompiled AST)

class MyVisitor(ida_hexrays.ctree_visitor_t):
    def visit_expr(self, e):
        if e.op == ida_hexrays.cot_call:
            print(f"Call at {e.ea:#x}")
        return 0

cfunc = ida_hexrays.decompile(ea)
MyVisitor().apply_to(cfunc.body, None)

Apply type

tif = ida_typeinf.tinfo_t()
if ida_typeinf.parse_decl(tif, None, "int (*)(char *, int)", 0):
    ida_typeinf.apply_tinfo(ea, tif, ida_typeinf.TINFO_DEFINITE)

Create structure

udt = ida_typeinf.udt_type_data_t()
m = ida_typeinf.udm_t()
m.name = "field1"
m.type = ida_typeinf.tinfo_t(ida_typeinf.BTF_INT32)
m.offset = 0
m.size = 4
udt.push_back(m)
tif = ida_typeinf.tinfo_t()
tif.create_udt(udt, ida_typeinf.BTF_STRUCT)
tif.set_named_type(ida_typeinf.get_idati(), "MyStruct")

Strings list

for s in idautils.Strings():
    print(f"{s.ea:#x}: {str(s)}")

Wait for analysis

ida_auto.auto_wait()  # Block until autoanalysis completes

Key Constants

Constant	Value/Use
`BADADDR`	Invalid address sentinel
`ida_name.SN_NOCHECK`	Skip name validation
`ida_typeinf.TINFO_DEFINITE`	Force type application
`o_reg` , `o_mem` , `o_imm` , `o_displ` , `o_near`	Operand types
`dt_byte` , `dt_word` , `dt_dword` , `dt_qword`	Data types
`fl_CF` , `fl_CN` , `fl_JF` , `fl_JN` , `fl_F`	Code xref types
`dr_R` , `dr_W` , `dr_O`	Data xref types

Critical Rules

NEVER convert hex/decimal manually — use
```
int_convert
```
MCP tool
Wait for analysis: Call
```
ida_auto.auto_wait()
```
before reading results
Thread safety: IDA SDK calls must run on main thread (use
```
@idasync
```
)
64-bit addresses: Always assume
```
ea_t
```
can be 64-bit

Anti-Patterns

Avoid	Do Instead
`idc.*` functions	Use `ida_*` modules
Hardcoded addresses	Use names, patterns, or xrefs
Manual hex conversion	Use `int_convert` tool
Blocking main thread	Use `execute_sync()` for long ops
Guessing at types	Derive from disassembly/decompilation

Detailed API Reference

For comprehensive documentation on any module, read

docs/<module>.md

High-use:

ida_bytes

ida_funcs

ida_hexrays

ida_typeinf

ida_name

idautils

Medium-use:

ida_segment

ida_xref

ida_ua

ida_frame

ida_kernwin

Specialized:
```
ida_dbg
```
(debugger),
```
ida_nalt
```
(netnode storage),
```
ida_regfinder
```
(register tracking)

Full RST sources from hex-rays.com available at

docs/<module>.rst