pwn-chain
Lets your agent create exploits from reverse engineering. It works with security flaws in systems. Useful for testing and improving program security.
What it does
This tool helps turn a known vulnerability into an exploit program. It's used to create 'exploits' (programs that take advantage of security flaws) from software bugs, like memory overflows or errors in Linux systems.
When to use it
- ✓When you already know a program has a flaw and want to create code to exploit it.
- ✓When adapting an exploit from a test environment (CTF) to an authorized real-world system.
- ✓To exploit flaws in Linux operating system components (kernel) and gain administrator privileges.
Example of what to ask your AI
“I want to create an exploit for a buffer overflow vulnerability I identified in a Linux program.”
Want more? Open the sections below.
How to use
The easiest way: copy the message below and paste it into Claude, ChatGPT, Cursor or any AI. It reads the skill and follows the instructions.
Skill link
Ready-to-paste message
How it works
It uses libraries like 'pwntools' to write the exploit code. First, it analyzes the type of vulnerability and system protections. Then, it chooses an exploitation strategy, finds necessary components (like pre-made code snippets called 'gadgets'), and assembles the exploit.
Installation
Easiest way: copy the skill link and paste it into Claude, ChatGPT or Cursor asking it to follow the instructions.
In the terminal (Claude Code, Codex, Cursor), in your project folder:
npx skills add sickn33/agentic-awesome-skills --skill pwn-chainOr download just the file:
curl -L https://raw.githubusercontent.com/sickn33/agentic-awesome-skills/main/plugins/agentic-awesome-skills-claude/skills/pwn-chain/SKILL.md -o SKILL.mdTechnical content (original SKILL.md)
Original text by the author, straight from GitHub.
⚠️ AUTHORIZED USE ONLY This skill is for educational purposes or authorized security assessments only. You must have explicit, written permission from the system owner before using this tool. Misuse of this tool is illegal and strictly prohibited.
Mandatory confirmation gate Before running any command that probes, exploits, changes, persists on, extracts data from, or attempts credential access against a target:
- Ask the user to state the exact target URL, IP, account, or resource.
- Ask the user to confirm written authorization and the permitted scope.
- Show the exact command(s) and explain their expected effect.
- Wait for explicit confirmation in the current conversation.
Without that confirmation, remain read-only and provide defensive guidance only. Prefer a sandbox, disposable VM, or controlled lab.
When to Use
- A binary vulnerability is understood and needs a reliable exploit.
- Porting a CTF-style exploit to an authorized real-world target.
适用范围
当任务属于以下场景时使用本 skill:
- 拿到二进制 + 已知漏洞点 — 静态/审计/fuzz 已经找到溢出/UAF/double free,需要从触发到拿 shell
- CTF 题已经本地通了,远程打不通 — 远端环境差异导致脚本失效,需要稳定化
- 真实目标的二进制利用 — SRC / 红队场景下,已经识别到内存损坏漏洞,需要构造 RCE
- Linux 内核驱动的 ioctl bug — 用户态触发,目标是提权到 root
前提:你已经知道"哪里炸了"。本 skill 不负责发现漏洞(那是 fuzzing / 审计),只负责"从漏洞点写出 exploit"。
与其他 skill 的分工
| 场景 | 用什么 |
|---|---|
| 识别 custom VM / anti-debug / 复杂 obfuscation | reverse-engineering/ |
| 从零打开二进制做静态分析 | ida-reverse/ 或 radare2/ |
| 有漏洞点,写 exploit 打通远程 | 本 skill |
| 把 pwn 拿到的 shell 整合进完整攻击链 | attack-chain/(下游) |
reverse-engineering/ 关注"理解程序在干什么"(模式识别、协议还原、解 CTF 题里的奇怪机制);本 skill 关注"把已经看懂的漏洞变成可执行的攻击"。两者经常配套使用,但分工清晰。
核心工作流
Step 1: 确认漏洞类型 + 保护机制
├─ checksec ./vuln(NX / Canary / PIE / RELRO / Fortify)
├─ file ./vuln + readelf -d ./vuln
├─ 漏洞分类:栈溢出 / 格式化字符串 / 堆 (UAF/DF/OF) / 整数 / 竞态 / 内核
└─ → 决定走哪个 references/
Step 2: 选择利用策略
├─ NX 关 + 无 ASLR → 直接 shellcode
├─ NX 开 + 给 libc → ret2libc / one_gadget
├─ NX 开 + 不给 libc → leak 后 libc-database 反查
├─ 堆 → 按 glibc 版本对应技术 (tcache/fastbin/unsorted/large)
└─ 内核 → commit_creds / modprobe_path / core_pattern
Step 3: 准备 libc + gadget
├─ libc-database:./find puts 0x6f0
├─ ROPgadget --binary ./libc.so.6 --only "pop|ret"
├─ one_gadget ./libc.so.6
└─ 计算 base:leak_addr - libc.sym['puts']
Step 4: 写 pwntools 模板(本地 process)
├─ context.binary = ELF('./vuln')
├─ p = process('./vuln') / p = gdb.debug('./vuln','b *main+xx')
├─ payload = cyclic(N) + p64(ret) + ...
└─ p.interactive()
Step 5: 本地通
├─ 反复 attach + 看寄存器 + 调 offset
├─ 用 pwndbg/GEF 的 vmmap / heap / bins / telescope
└─ 跑通后切 remote()
Step 6: 远程稳定化
├─ libc 偏移:用 leak 反查 libc-database,不要拍脑袋
├─ 栈对齐:16-byte 不对齐 → movaps 崩 → 加一个 ret gadget
├─ 远程网络延迟 → recvuntil 精确锚字符串,禁用模糊 sleep
├─ 远程缓冲:sendlineafter 比 sendline 更稳
├─ 堆喷成功率:放大 spray 数量 + 留 padding chunk 防合并
└─ 多次跑:写 while True 验证成功率 ≥ 95%
典型场景
场景 1:远程 64 位二进制 (NX+PIE+canary, 给了 libc)
已有:./vuln(64-bit ELF, NX, PIE, canary)+ ./libc.so.6 + nc host port
漏洞:read(buf, 0x200) 但 buf 只有 0x40 字节 → 栈溢出
保护:canary 拦住,PIE 让 .text 随机化
策略:
1. 先 leak canary(栈/格式化字符串/部分读)
2. 再 leak 一个 libc 函数地址(puts@got)
3. 用 libc.address = leaked - libc.sym['puts'] 算 libc base
4. one_gadget ./libc.so.6 选一个约束能满足的 magic gadget
5. payload = padding + canary + saved_rbp + (pop_rdi + bin_sh + system) 或直接 one_gadget
6. 加一个 ret gadget 修栈对齐(关键!)
完整模板参见 references/stack-pwn.md。
场景 2:Linux 内核驱动 ioctl 越界写 → 拿 root
已有:vmlinux + bzImage + initramfs.cpio.gz + 自定义 vuln.ko
漏洞:ioctl(0x1337, ptr) 里 copy_from_user 长度可控 → kernel heap overflow (kmalloc-64 slab)
保护:SMEP, SMAP, KASLR, KPTI
策略:
1. 改 init 脚本拿到 root shell(CTF)或先 leak KASLR base 再继续(真实)
2. 通过 /proc/kallsyms(可能限权)或未初始化堆喷 leak 内核基址
3. 在 kmalloc-64 slab 里喷 tty_struct / msg_msg / pipe_buffer
4. 覆盖 vtable 指针指向用户态 → 不行(SMEP),改走 stack pivot + 内核 ROP
5. ROP 链:prepare_kernel_cred(0) → commit_creds → swapgs+iretq → 用户态 execve("/bin/sh")
6. 或更省事:覆盖 modprobe_path 为 "/tmp/x",写一个 /tmp/x,然后触发 modprobe
完整模板参见 references/kernel-pwn.md。
按需自举 (On-Demand Bootstrap)
工具依赖
| 工具 | 用途 | 安装方式 |
|---|---|---|
| pwntools | exploit 编写框架 | pip install pwntools |
| GEF | gdb 增强(推荐内核 + 用户态) | git clone https://github.com/bata24/gef (fork 维护活跃) |
| pwndbg | gdb 增强(堆调试体验最好) | git clone https://github.com/pwndbg/pwndbg && ./setup.sh |
| ROPgadget | gadget 搜索 | pip install ropgadget |
…
FAQ
What is 'pwn'?
'Pwn' is a slang term in the information security community meaning 'to be exploited' or 'to own'. In this context, it refers to the art of finding and exploiting vulnerabilities in programs.
What are 'gadgets'?
These are small pieces of code that already exist within the target program or its libraries. They are used to build the exploit, allowing the attacker to perform specific actions without injecting new code.
Do I need permission to use this tool?
Yes, absolutely. This tool should only be used on systems for which you have explicit, written permission. Using it on unauthorized systems is illegal.
Details
Original description by the author
Go from reverse engineering to a working exploit: stack/heap/kernel pwn workflows with pwntools, libc-database, ROP, and stabilization from CTF to authorized remote targets.
Popularity
- GitHub stars
- 48k
- Ranking position
- #3926
- License
- MIT
- Updated
- 10/15/2026
Comments
- …
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