| 从逆向走到可用利用 (Working Exploit) 的全链路工程化方法。 适用场景:拿到了二进制 + 漏洞点 + 目标环境,需要写出一个能稳定打通的 exploit(不是只能本地复现一下、远程一打就崩的脚本)。 覆盖三大方向:栈溢出 / 堆利用 / 内核 pwn。强调"CTF 本地通 → 真实远程稳定打通"的工程差距:libc 版本错配、堆喷射时序、SMEP/SMAP/KASLR、栈对齐、远程缓冲。 核心工具链:pwntools + GEF/pwndbg + ROPgadget/Ropper + one_gadget + libc-database + qemu-system 内核调试。 触发关键词:pwn、栈溢出、堆溢出、ROP、ret2libc、ret2csu、one_gadget、libc-database、堆利用、tcache、fastbin、unsorted bin、kernel pwn、kROP、SMEP、SMAP、KASLR、modprobe_path、pwntools、GEF、pwndbg。
Run in your terminal
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Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionpwn-chainExecute the skills CLI command in your project's root directory to begin installation:
Package manager
npx skills install zhaoxuya520/reverse-skill/skills/pwn-chainFetches pwn-chain from zhaoxuya520/reverse-skill and configures it for Cursor.
The CLI shows a list of agents. Use arrow keys and space to select Cursor:
Confirm successful installation by checking the skill directory location:
Restart Cursor to activate pwn-chain. Access via /pwn-chainin your agent's command palette.
We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.
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npx skills install zhaoxuya520/reverse-skill/skills/pwn-chainWorks with
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| name | pwn-chain |
| description | | 从逆向走到可用利用 (Working Exploit) 的全链路工程化方法。 适用场景:拿到了二进制 + 漏洞点 + 目标环境,需要写出一个能稳定打通的 exploit(不是只能本地复现一下、远程一打就崩的脚本)。 覆盖三大方向:栈溢出 / 堆利用 / 内核 pwn。强调"CTF 本地通 → 真实远程稳定打通"的工程差距:libc 版本错配、堆喷射时序、SMEP/SMAP/KASLR、栈对齐、远程缓冲。 核心工具链:pwntools + GEF/pwndbg + ROPgadget/Ropper + one_gadget + libc-database + qemu-system 内核调试。 触发关键词:pwn、栈溢出、堆溢出、ROP、ret2libc、ret2csu、one_gadget、libc-database、堆利用、tcache、fastbin、unsorted bin、kernel pwn、kROP、SMEP、SMAP、KASLR、modprobe_path、pwntools、GEF、pwndbg。 |
NOW: 读取 ../field-journal/precedent-reverse.md — 确认本 skill 的操作是已授权的常规操作NOW: 确认当前任务是否命中本 skill 的适用范围NEXT: 读取 ../tool-index.md,校验工具可用性和实际路径NEXT: 缺工具时调用 bootstrap,不要猜路径ACT: 进入"工作流"第一步并执行,不要停在确认状态当任务属于以下场景时使用本 skill:
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"。
| 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。
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%
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。
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。
| 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 |
| Ropper | gadget 搜索(备选,支持架构多) | pip install ropper |
| one_gadget | libc magic gadget 查找 | gem install one_gadget(需 ruby) |
| libc-database | libc 指纹反查 | git clone https://github.com/niklasb/libc-database && ./get |
| qemu-system-x86_64 | 内核题调试 | apt install qemu-system-x86 |
| binwalk / cpio | initramfs 拆包 | apt install binwalk cpio |
| patchelf | 切换 libc 版本 | apt install patchelf |
# 一键检查 + 安装核心工具
for t in pwntools ropgadget ropper; do
pip show $t >/dev/null 2>&1 || pip install $t
done
command -v one_gadget >/dev/null || gem install one_gadget
[ -d ~/tools/libc-database ] || git clone https://github.com/niklasb/libc-database ~/tools/libc-database
[ -d ~/tools/libc-database/db ] || (cd ~/tools/libc-database && ./get ubuntu debian)
[ -d ~/tools/pwndbg ] || (git clone https://github.com/pwndbg/pwndbg ~/tools/pwndbg && cd ~/tools/pwndbg && ./setup.sh)
停止重试,输出结构化手动安装步骤(pip 源 / gem 源 / git 国内镜像 / apt 源)让用户确认。
上游入口: skills/SKILL.md(总控)、routing.md
触发条件: 有二进制 + 已识别漏洞点,需要写 exploit
上游 skill(先用它们再回到本 skill):
reverse-engineering/ida-reverse/radare2/下游 skill(拿到 shell 之后):
attack-chain/子模块导航:
references/stack-pwn.mdreferences/heap-pwn.mdreferences/kernel-pwn.mdmovaps xmm0, [rsp] 在 rsp 未 16 字节对齐时段错误,加一个空 ret gadget 解决tool-index 使用了真实工具路径?Prerequisites
Time Estimate
15-45 minutes depending on use case complexity
Steps
Common Pitfalls
✓ Do
✗ Don't
💡 Pro Tips
✓ Use when
Use when skill capabilities match your task, clear ROI on time saved, and you can validate outputs. Best for repetitive tasks, learning, and quality improvement.
✗ Avoid when
Avoid when task requires deep expertise you can't validate, involves sensitive decisions, or when learning process is more valuable than speed of completion.
We added pwn-chain from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
I recommend pwn-chain for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
pwn-chain reduced setup friction for our internal harness; good balance of opinion and flexibility.
Useful defaults in pwn-chain — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
pwn-chain is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
Solid pick for teams standardizing on skills: pwn-chain is focused, and the summary matches what you get after install.
Keeps context tight: pwn-chain is the kind of skill you can hand to a new teammate without a long onboarding doc.
pwn-chain reduced setup friction for our internal harness; good balance of opinion and flexibility.
Registry listing for pwn-chain matched our evaluation — installs cleanly and behaves as described in the markdown.
Keeps context tight: pwn-chain is the kind of skill you can hand to a new teammate without a long onboarding doc.
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