From 9d78c9be30f2637637e77f4ec59770299e308a74 Mon Sep 17 00:00:00 2001
From: whx <stefan@stefan.works>
Date: Tue, 21 Dec 2021 17:36:55 +0100
Subject: [PATCH] bump

---
 crypto/rsa.md                          | 36 ++++++++++++++++++++++++
 enumeration/docs/docker_enumeration.md | 21 ++++++++++++++
 enumeration/docs/microk8s.md           | 13 +++++++++
 misc/aws/bucket.md                     |  7 -----
 misc/level3_hypervisor/microk8s.md     | 39 ++++++++++++++++++++++++++
 5 files changed, 109 insertions(+), 7 deletions(-)
 create mode 100644 crypto/rsa.md
 create mode 100644 enumeration/docs/docker_enumeration.md
 create mode 100644 enumeration/docs/microk8s.md
 delete mode 100644 misc/aws/bucket.md
 create mode 100644 misc/level3_hypervisor/microk8s.md

diff --git a/crypto/rsa.md b/crypto/rsa.md
new file mode 100644
index 0000000..66c4f5d
--- /dev/null
+++ b/crypto/rsa.md
@@ -0,0 +1,36 @@
+# RSA
+
+* `p * q = n`
+* Coprime Phi is calculated either by [Euler Totient](https://en.wikipedia.org/wiki/Euler's_totient_function) or [greatest common divisor](https://en.wikipedia.org/wiki/Greatest_common_divisor) via [euclidean algorithm](https://crypto.stanford.edu/pbc/notes/numbertheory/euclid.html) 
+* \\(1 < $\phi$ < n \\)
+* There is also $\phi$ = (p-1) * (q-1)
+
+* Encryption, public key `e` is a prime between 2 and phi  --> \\( 2 < e < $\phi$ \\)
+```python
+possible_e = []
+for i in range (2, phi):
+    if gcd(n, i) == 1 and gcd(phi, i) == 1:
+        possible_e.append() 
+```
+
+* Decryption, private key `d` --> \\( d * e mod $\phi$ = 1 \\)
+```python
+possible_d = []
+for i in range (phi + 1, phi + foo):
+    if i * e mod phi == 1 :
+       possible_d.append()
+```
+* \\( Cipher = msg ** d mod $\phi$ \\)
+* \\( Cleartext = cipher ** e mod $\phi$ ) 
+
+## Euklid
+```python
+def gcd(a, b):
+    if b == 0:
+        return a
+    return gcd(b, a % b)
+```
+
+## Links
+
+* [Encryption+Decryption](https://www.cs.drexel.edu/~jpopyack/Courses/CSP/Fa17/notes/10.1_Cryptography/RSA_Express_EncryptDecrypt_v2.html)
diff --git a/enumeration/docs/docker_enumeration.md b/enumeration/docs/docker_enumeration.md
new file mode 100644
index 0000000..20ef3bd
--- /dev/null
+++ b/enumeration/docs/docker_enumeration.md
@@ -0,0 +1,21 @@
+# Docker Enumeration
+
+## Save Images
+
+* Save image and extract it
+```sh
+docker save -o image.tar <image-name>
+tar -xf image.tar
+```
+* Run a container from the image and `printenv`
+
+### Manifest
+* Read the manifest inside the image extracted
+```sh
+jq . manifest.json
+```
+* Read the config JSON file mentioned in the manifest
+* Inside this config file there are the shell commands used at building the image
+* Snoop around after interesting files, especially inside the root dir in `layer.tar`
+
+
diff --git a/enumeration/docs/microk8s.md b/enumeration/docs/microk8s.md
new file mode 100644
index 0000000..3d634c7
--- /dev/null
+++ b/enumeration/docs/microk8s.md
@@ -0,0 +1,13 @@
+# Microk8s
+
+* [microk8s repo](https://github.com/ubuntu/microk8s)
+
+## Enumeration
+
+```sh
+microk8s kubectl get nodes
+microk8s kubectl get services
+microk8s kubectl get pods
+microk8s kubectl get deployments -o wide
+microk8s kubectl cluster-info
+```
diff --git a/misc/aws/bucket.md b/misc/aws/bucket.md
deleted file mode 100644
index d80fb05..0000000
--- a/misc/aws/bucket.md
+++ /dev/null
@@ -1,7 +0,0 @@
-# AWS Buckets
-
-# Usage
-* Enum to s3 bucket
-```sh
-aws s3 ls s3://bucketname.region-name.amazonaws.com
-```
diff --git a/misc/level3_hypervisor/microk8s.md b/misc/level3_hypervisor/microk8s.md
new file mode 100644
index 0000000..f2bebac
--- /dev/null
+++ b/misc/level3_hypervisor/microk8s.md
@@ -0,0 +1,39 @@
+# MicroK8s 
+
+
+## Usage 
+
+* Create `pod.yaml` configuration
+```yaml
+apiVersion: v1
+kind: Pod
+metadata:
+  name: harry-podder
+spec:
+  containers:
+  - name: shell
+    image: localhost:47111/alpine
+    command:
+      - "/bin/bash"
+      - "-c"
+      - "sleep 10000"
+    volumeMounts:
+      - name: root
+        mountPath: /mnt/root
+  volumes:
+  - name: root
+    hostPath:
+      path: /
+      type: Directory
+```
+
+* Deploy the pod
+```sh
+microk8s kubectl apply -f pod.yaml
+```
+* Run the Pod
+```sh
+microk8s kubectl exec -it harry-podder -- /bin/bash
+```
+
+