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rename handlers.js to ios_handlers.js
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noobpk committed Sep 13, 2023
1 parent 9499f29 commit 2c0cc1b
Showing 1 changed file with 69 additions and 36 deletions.
105 changes: 69 additions & 36 deletions handlers.js → ios_handlers.js
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Original file line number Diff line number Diff line change
Expand Up @@ -104,25 +104,61 @@ function search_response_classes(){
return classes_response_found;
}

function print_arguments(args) {
/*
Frida's Interceptor has no information about the number of arguments, because there is no such
information available at the ABI level (and we don't rely on debug symbols).
I have implemented this function in order to try to determine how many arguments a method is using.
It stops when:
- The object is not nil
- The argument is not the same as the one before
/**
* The function `print_arguments` takes an array of arguments and prints information about each
* argument, including its type, byte representation in hexadecimal, string representation, and binary
* data representation.
* @param args - The `args` parameter is an array of arguments passed to a function. In this case, it
* seems to be an array of Objective-C objects.
*/
var n = 100;
var last_arg = '';
for (var i = 2; i < n; ++i) {
var arg = (new ObjC.Object(args[i])).toString();
if (arg == 'nil' || arg == last_arg) {
break;
function print_arguments(args) {
try {
var n = 100;
var last_arg = '';
for (var i = 2; i < n; ++i) {
var arg = (new ObjC.Object(args[i])).toString();
if (arg == 'nil' || arg == last_arg) {
break;
}
last_arg = arg;
console.log('\t[+] Dump Arg' + i + ': ' + (new ObjC.Object(args[i])).toString());
var data = new ObjC.Object(args[i]);
console.log(colors.green, "\t\t[-] Arugment type: ", colors.resetColor);
console.log("\t\t\t", data.$className);
/* Converting Byte to HexString */
console.log(colors.green, "\t\t[-] Bytes to Hex:", colors.resetColor);
try {
var arg = ObjC.Object(args[2]);
var length = arg.length().valueOf();
var bytes = arg.bytes();
var byteString = "";
for (var i = 0; i < length; i++) {
var byte = bytes.add(i).readU8();
byteString += byte.toString(16).padStart(2, '0'); // Convert to hex and pad with leading zero if needed
}
console.log("\t\t\t", byteString);
} catch (err_bytes2hex) {
console.log(colors.red, "\t\t\t[x] Cannot convert Byte to Hex. Error: ", err_bytes2hex, colors.resetColor);
}
/* Converting NSData to String */
console.log(colors.green, "\t\t[-] NSData to String: ", colors.resetColor);
try {
var buf = data.bytes().readUtf8String(data.length());
console.log("\t\t\t", buf);
} catch (err_nsdata2string) {
console.log(colors.red, "\t\t\t[x] Cannot convert NSData to String. Error: ", err_nsdata2string, colors.resetColor);
}
/* Converting NSData to Binary Data */
console.log(colors.green, "\t\t[-] NSData to Binary Data: ", colors.resetColor);
try {
var buf = data.bytes().readByteArray(data.length());
console.log(hexdump(buf, { ansi: true }));
} catch (err_nsdata2bin) {
console.log(colors.red, "\t\t\t[x] Cannot convert NSData to Binary Data. Error: ", err_nsdata2bin, colors.resetColor);
}
}
last_arg = arg;
console.log('\t[-] arg' + i + ': ' + (new ObjC.Object(args[i])).toString());
} catch (err_dump) {
console.log(colors.red, "\t\t\t[x] Cannot dump all arugment in method . Error: ", err_dump, colors.resetColor);
}
}

Expand Down Expand Up @@ -174,14 +210,13 @@ if (ObjC.available)
// console.log(' ' + this._className + ' --> ' + this._methodName);
// console.log(colors.green,"[DEBUG-REQUEST] Dump Arugment in method: ",colors.resetColor);
// print_arguments(args);
// console.log(ObjC.Object(args[3]));
// var message1 = ObjC.Object(args[2]);
// var message2 = ObjC.Object(args[3]);
// var message3 = ObjC.Object(args[4]);

// console.log('msg1=' + message1.toString() + ",type: "+ message1.$className);
// console.log('msg2=' + message2.toString() + ",type: "+ message2.$className);
// console.log('msg3=' + message3.toString() + ",type: "+ message3.$className);
/* Backtrace */
// console.log(colors.green, "[+] Backtrace: ", colors.resetColor);
// try {
// console.log(Thread.backtrace(this.context, Backtracer.ACCURATE).map(DebugSymbol.fromAddress).join("\n\t"));
// } catch (err_backtrace) {
// console.log(colors.red, "\t\t\t[x] Cannot backtrace . Error: ", err_backtrace, colors.resetColor);
// }


this.buf = ObjC.Object(args[3]).toString();
Expand Down Expand Up @@ -228,7 +263,7 @@ if (ObjC.available)
op.wait();
},
onLeave: function(retval, state) {

//
}
});
}
Expand Down Expand Up @@ -259,16 +294,14 @@ if (ObjC.available)
// console.log(' ' + this._className + ' --> ' + this._methodName);
// console.log(colors.green,"[DEBUG-RESPONSE] Dump Arugment in method: ",colors.resetColor);
// print_arguments(args);
// console.log(ObjC.Object(args[2]));
// var message1 = ObjC.Object(args[2]);
// var message2 = ObjC.Object(args[3]);
// var message3 = ObjC.Object(args[4]);

// console.log('msg1=' + message1.toString() + ",type: "+ message1.$className);
// console.log('msg2=' + message2.toString() + ",type: "+ message2.$className);
// console.log('msg3=' + message3.toString() + ",type: "+ message3.$className);
/* Backtrace */
// console.log(colors.green, "[+] Backtrace: ", colors.resetColor);
// try {
// console.log(Thread.backtrace(this.context, Backtracer.ACCURATE).map(DebugSymbol.fromAddress).join("\n\t"));
// } catch (err_backtrace) {
// console.log(colors.red, "\t\t\t[x] Cannot backtrace . Error: ", err_backtrace, colors.resetColor);
// }


this.buf = ObjC.Object(args[2]).toString();

var js = {};
Expand Down Expand Up @@ -308,7 +341,7 @@ if (ObjC.available)
op.wait();
},
onLeave: function(retval, state) {

//
}
});
}
Expand Down

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