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stalker log modified registers values

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iddoeldor 2019-08-18 12:14:24 +03:00 committed by GitHub
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@ -1774,6 +1774,11 @@ pattern [ 52 41 4e 44 4f 4d ] {
#### Stalker
```js
var _module = Process.findModuleByName('myModule');
var base = ptr(_module.base);
var startTraceOffset = 0xabcd1234, numInstructionsToTrace = 50;
var startTrace = base.add(startTraceOffset), endTrace = startTrace.add(4 * (numInstructionsToTrace - 1));
Interceptor.attach(ObjC.classes.CustomClass['- func'].implementation, {
onEnter: function (args) {
var tid = Process.getCurrentThreadId();
@ -1783,8 +1788,25 @@ pattern [ 52 41 4e 44 4f 4d ] {
transform: function (iterator) {
var instruction;
while ((instruction = iterator.next()) !== null) {
// condition to putCallout
if (instruction.address <= endTrace && instruction.address >= startTrace) {
// print instruction & registers values
iter.putCallout(function(context) {
var offset = ptr(context.pc).sub(base);
var inst = Instruction.parse(context.pc).toString();
var modified_inst = inst;
inst.replace(/,/g, '').split(' ').forEach(op => {
if (op.startsWith('x'))
modified_inst = modified_inst.replace(op, context[op]);
else if (op.startsWith('w'))
modified_inst = modified_inst.replace(op, context[op.replace('w', 'x')]);
});
modified_inst = '\x1b[35;01m' + modified_inst + '\x1b[0m';
console.log(`x8=${context.x8} x25=${context.x25} x0=${context.x0} x21=${context.x21}`)
console.log(`${offset} ${inst} # ${modified_inst}`);
});
}
iterator.keep();
console.log('\t' + instruction.address, instruction.toString()); // to get offset > save module base & use .sub()
}
}
})
@ -1800,7 +1822,7 @@ pattern [ 52 41 4e 44 4f 4d ] {
<details>
<summary>Output example</summary>
TODO
mul x5, x2, x21 # mul 0x3, 0x4, 0x5
</details>
<br>[⬆ Back to top](#table-of-contents)