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Use when assessing cryptography — TLS/PKI auditing, RSA/ECC key attacks, ECDSA nonce lattice recovery, symmetric/AEAD misuse, JWT/JOSE forgery, hash cracking, post-quantum migration review
デフォルトでは、最初にソースを確認する Prompt が選択されています。直接コマンドに切り替えるか、ローカルコピーをダウンロードすることもできます。
インストールを決める前に、SKILL.md と SkillsMP に表示されている付属ファイルをお読みください。
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
直接コマンドでは確認用 Prompt が省略されます。実行前にソースを確認してください。
npx skills add https://github.com/hypnguyen1209/offensive-claude --skill crypto-analysisコマンドは1行のまま表示されます。コピー前に横へスクロールして全体を確認してください。
ローカルで確認しますか？SkillsMP が現在取得できるファイルをダウンロードできます。
Use when reverse-engineering a binary or firmware — static triage + decompilation (Ghidra/IDA/Binary Ninja), dynamic instrumentation (GDB/Frida 17/angr), anti-reversing & packer bypass, OLLVM/VM deobfuscation, UEFI/BIOS RE & Secure Boot research, patch-diffing for n-days
Use when escalating privileges on a Windows host — SeImpersonate Potato chains (GodPotato/PrintNotifyPotato), service & DLL hijacking, UAC bypass (fodhelper/ICMLuaUtil), kernel EoP + BYOVD (CVE-2025-29824), token-rights abuse, LSASS/SAM/DPAPI credential harvesting
Use when starting an engagement, before exploitation, or whenever the attack surface changes — build/validate the threat model and detect drift (new unreviewed surface) before advancing
SOC 職業分類に基づく
SKILL.md を表示中
| name | crypto-analysis |
| description | Use when assessing cryptography — TLS/PKI auditing, RSA/ECC key attacks, ECDSA nonce lattice recovery, symmetric/AEAD misuse, JWT/JOSE forgery, hash cracking, post-quantum migration review |
| metadata | {"type":"offensive","phase":"analysis","tools":"testssl.sh, openssl, hashcat, john, RsaCtfTool, sagemath, jwt_tool, ecdsa-lattice","mitre":["T1600","T1600.001","T1557","T1110.002","T1552.004","T1606.001","T1040"]} |
| kill_chain | {"phase":["recon","exploit"],"step":[1,4],"attck_tactics":["TA0043","TA0006","TA0009"],"attck_techniques":["T1600","T1600.001","T1557","T1557.001","T1110.002","T1552.004","T1606.001","T1040"]} |
| depends_on | ["recon-osint"] |
| feeds_into | ["exploit-development","web-pentest","network-attack"] |
| inputs | ["tls_config","crypto_implementation","hash_samples","public_keys","jwt_tokens","signature_corpus"] |
| outputs | ["crypto_weakness_report","finding_record","recovered_keys","cracked_credentials"] |
| references | ["references/tls-pki-audit.md","references/rsa-attacks.md","references/ecc-nonce-attacks.md","references/symmetric-aead.md","references/jwt-jose.md","references/hash-pq.md"] |
| scripts | ["scripts/tls_audit.py","scripts/rsa_attack.py","scripts/ecdsa_lattice.py","scripts/padding_oracle.py","scripts/gcm_nonce_reuse.py","scripts/jwt_forge.py","scripts/hash_triage.py"] |
| Technique | ATT&CK | CWE | Reference | Script |
|---|---|---|---|---|
| TLS cipher/protocol downgrade audit | T1600.001 | CWE-326 | references/tls-pki-audit.md | scripts/tls_audit.py |
| Terrapin SSH prefix truncation (CVE-2023-48795) | T1557 | CWE-222 | references/tls-pki-audit.md | scripts/tls_audit.py |
| Marvin/Bleichenbacher RSA timing oracle | T1600 | CWE-208 | references/tls-pki-audit.md | scripts/tls_audit.py |
| X.509 / CT-log shadow-asset discovery | T1589 | CWE-295 | references/tls-pki-audit.md | scripts/tls_audit.py |
| RSA weak-key factoring (Fermat/Wiener/common-modulus) | T1600 | CWE-326 | references/rsa-attacks.md | scripts/rsa_attack.py |
| Coppersmith partial-key & ROCA (CVE-2017-15361) | T1600 | CWE-310 | references/rsa-attacks.md | scripts/rsa_attack.py |
| Hastad broadcast / batch-GCD | T1600 | CWE-326 | references/rsa-attacks.md | scripts/rsa_attack.py |
| ECDSA nonce reuse key recovery | T1552.004 | CWE-323 | references/ecc-nonce-attacks.md | scripts/ecdsa_lattice.py |
| Biased-nonce lattice/HNP (Minerva, PuTTY CVE-2024-31497) | T1552.004 | CWE-1241 | references/ecc-nonce-attacks.md | scripts/ecdsa_lattice.py |
| Psychic signature (0,0) (CVE-2022-21449) | T1606.001 | CWE-347 | references/ecc-nonce-attacks.md | scripts/ecdsa_lattice.py |
| CBC padding oracle (byte-by-byte decrypt) | T1040 | CWE-209 | references/symmetric-aead.md | scripts/padding_oracle.py |
| AES-GCM nonce reuse "forbidden attack" | T1040 | CWE-323 | references/symmetric-aead.md | scripts/gcm_nonce_reuse.py |
| AEAD key-commitment / invisible salamanders / partitioning oracle | T1606 | CWE-347 | references/symmetric-aead.md | scripts/gcm_nonce_reuse.py |
| JWT algorithm confusion RS256→HS256 (CVE-2024-54150) | T1606.001 | CWE-347 | references/jwt-jose.md | scripts/jwt_forge.py |
| JWT alg=none / jwk / jku / kid injection | T1606.001 | CWE-347 | references/jwt-jose.md | scripts/jwt_forge.py |
| Hash identification & GPU cracking | T1110.002 | CWE-916 | references/hash-pq.md | scripts/hash_triage.py |
| Weak KDF / fast-hash password storage | T1110.002 | CWE-916 | references/hash-pq.md | scripts/hash_triage.py |
| Post-quantum / HNDL exposure review | T1600 | CWE-327 | references/hash-pq.md | scripts/tls_audit.py |
# 0. TLS/PKI posture in one shot (downgrade, ROBOT, SWEET32, Terrapin, cert/CT)
python3 scripts/tls_audit.py target.com:443 --ssh target.com:22 --ct --json out.json
testssl.sh --full --robot --sweet32 https://target.com # cross-check with the canonical tool
# 1. RSA weak-key triage on a captured public key
python3 scripts/rsa_attack.py --pubkey server.pem --ct ciphertext.b64 --auto
# tries Fermat (p~=q), Wiener (small d), batch-GCD/common-modulus, ROCA fingerprint
# 2. ECDSA key recovery from a signature corpus (reuse or bias)
python3 scripts/ecdsa_lattice.py recover sigs.json --curve secp256r1 --known-msb 4
# reuse: needs 2 sigs w/ same r; bias: ~256-1200 sigs depending on leak
# 3. Symmetric/AEAD misuse
python3 scripts/padding_oracle.py --url https://t/dec --ct $CT --block 16 # CBC oracle
python3 scripts/gcm_nonce_reuse.py forbidden ct1.bin ct2.bin --nonce $N # recover H + forge
# 4. JWT forgery chain
python3 scripts/jwt_forge.py confusion --pubkey jwt_pub.pem --claims '{"role":"admin"}'
python3 scripts/jwt_forge.py none --claims '{"sub":"admin"}'
# 5. Hash triage + crack plan
python3 scripts/hash_triage.py hashes.txt # identify + emit hashcat -m / john format
hashcat -m 22000 capture.hc22000 wl.txt -r rules/best64.rule
| Technique | Telemetry / IOC | Detection (Sigma/EDR) | OPSEC note |
|---|---|---|---|
| TLS scanning / testssl | Burst of handshakes, many cipher renegotiations, malformed ClientHellos | NIDS: high TLS alert rate from one src; Zeek ssl.log anomalous cipher offers | Rate-limit, spread across source IPs; passive cert/CT recon leaves no target-side trace |
| Marvin/ROBOT oracle probing | ~10^4–10^6 RSA decrypts, repeated malformed pre-master/CMS | WAF/IDS: spike of TLS decrypt errors, identical-size payloads | Extremely loud; only against authorized hosts; use minimal query budgets |
| Terrapin MitM | Injected SSH_MSG_IGNORE, sequence-number gap at NEWKEYS | SSH server logs kex mismatch; netflow showing on-path device | Requires active MitM; detectable by strict-kex peers; abort if kex-strict present |
| ECDSA nonce harvesting | Bulk signature collection (Git, TLS, SSH, blockchain) | Mostly offline — no target telemetry once sigs captured | Collection is passive; recovery is offline; rotate-key advice in report |
| CBC padding oracle | Thousands of decrypt requests, alternating valid/invalid padding | Web logs: ~256×blocks requests to one endpoint; Sigma on 4xx burst | Very noisy (256×blocks×msgs); throttle, randomize timing |
| GCM nonce reuse / partitioning | Repeated (nonce,key) pairs; multi-key ciphertext blobs | App crypto audit; flag reused IVs in logs | Forbidden-attack math is offline once two ciphertexts captured |
| JWT forgery | Anomalous alg, external jku/x5u fetch, all-zero ES signature | Sigma: JWT with alg:none/HS after RS expected; egress to attacker JWKS URL | Each forged token is a single request; minimal noise |
| Hash cracking | None on target (offline) | N/A unless online spray (then T1110) | Offline; protect loot at rest; never spray live without scope |