原理介绍:https://www.anquanke.com/post/id/85996
setImmediate(function () {
Java.perform(function () {
console.log("[*] Hooking calls to System.exit");
try {
var exitClass = Java.use("java.lang.System");
exitClass.exit.implementation = function () {
console.log("[*] System.exit called");
}
} catch (e) {
console.log('exitClass err', e)
}
var strncmp = undefined;
var imports = Module.enumerateImportsSync("libfoo.so");
for (var i = 0; i < imports.length; i++) {
if (imports[i].name == "strncmp") {
strncmp = imports[i].address;
break;
}
}
//Get base address of library
var libfoo = Module.findBaseAddress("libfoo.so");
//Calculate address of variable
if (libfoo !== null) {
var initialized = libfoo.add(ptr("0x400C"));
//Write 1 to the variable
Memory.writeInt(initialized, 1);
}else {
console.log('libfoo is null')
}
if (strncmp !== undefined) {
Interceptor.attach(strncmp, {
onEnter: function (args) {
if (args[2].toInt32() == 23 && Memory.readUtf8String(args[0], 23) == "01234567890123456789012") {
console.log("[*] Secret string at " + args[1] + ": " + Memory.readUtf8String(args[1], 23));
}
},
});
console.log("[*] Intercepting strncmp");
}else {
console.log('strncmp is undefined')
}
});
});
转载于 小小咸鱼YwY
手机扫一扫
移动阅读更方便
你可能感兴趣的文章