killchain-compendium/crypto/openssl/OpenSSL-Cheatsheet.md

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# OpenSSL Cheatsheet
## Extract keys from PFX Cert
* Key and cert form PFX
```sh
openssl pkcs12 -in cert.pfx -nocerts -out key.pem -nodes
openssl pkcs12 -in cert.pfx -out cert.pem -clcerts -nokeys
```
## Extract & Repack PFX Cert
* Extract & Repack with another password, e.g. from `mimikatz` to `cqure`
```sh
openssl pkcs12 -in *.pfx -out temp.pem -nodes
openssl pkcs12 -export -out *.pfx -in temp.pem
```
## Generate Certificate
```sh
openssl req -new -x509 -keyout cert.pem -out cert.pem -days 365 -nodes
```