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<!-- Licensed under AGPL-3.0 — see LICENSE file for details. -->
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---
name: exploiting-jit-compiler-bugs
description: >-
  Exploit JIT compiler vulnerabilities including bounds check elimination, incorrect optimization, and type inference bugs in JavaScript engines and managed runtimes.
domain: cybersecurity
subdomain: binary-exploitation
tags:
  - jit
  - v8
  - spidermonkey
  - bounds-check-elimination
version: "1.0"
author: defconxt
license: AGPL-3.0
metadata:
  mitre-attack: ["T1203"]
  frameworks: ["MITRE ATT&CK"]
  tools: ["gdb", "turbolizer", "pwntools"]
---

# Exploiting Jit Compiler Bugs

## Overview

Exploit JIT compiler vulnerabilities including bounds check elimination, incorrect optimization, and type inference bugs in JavaScript engines and managed runtimes.

## Prerequisites

| Tool / Requirement | Details |
|---|---|
| `gdb` | Security tooling |
| `turbolizer` | Security tooling |
| `pwntools` | Security tooling |
| Target runtime (V8, SpiderMonkey), GDB, JIT debugging tools | Environment requirement |

## Quick Reference

```bash
# Quick start commands
node scripts/agent.js --help
node scripts/agent.js trigger --engine v8 --function target_func
```

## Workflow

### Step 1: Trigger JIT Compilation

```bash
node scripts/agent.js trigger --engine v8 --function target_func
```

### Step 2: Identify Optimization Bug

```bash
node scripts/agent.js analyze --engine v8 --ir-dump turbofan.cfg
```

### Step 3: Exploit Bounds Elimination

```bash
node scripts/agent.js exploit --engine v8 --bug-type bce
```

## Detection

```yaml
title: Exploiting Jit Compiler Bugs Detection
id: 6d933279-280d-49ff-b182-0395bb92b09d
status: experimental
description: Detects suspicious activity related to exploiting jit compiler bugs techniques in binary exploitation context
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    CommandLine: "*exploiting*jit*"
  condition: selection
level: critical
tags:
  - attack.t1203
  - attack.execution
falsepositives:
  - Vulnerability scanner testing known exploit signatures
```


**Detection Opportunities**

| Indicator | Source | Detection Logic |
|---|---|---|
| Exploiting Jit Compiler Bugs Detection | windows/process_creation | Sigma rule (critical) |
| ATT&CK Coverage | MITRE ATT&CK | T1203 |

## Verification

- **Verify JIT bug**: `node scripts/agent.js analyze --engine v8 --ir-dump turbofan.cfg`
- **Confirm exploitation**: `node scripts/agent.js exploit --engine v8 --bug-type bce`

## References

- MITRE ATT&CK: T1203
- Frameworks: MITRE ATT&CK
- Tools: gdb, turbolizer, pwntools
