use sha2::{Digest, Sha256};
use crate::hashes::{AttackModeType, HashModule, HashPattern, ParsedHash};
pub struct RawMssql05;
impl HashModule for RawMssql05 {
fn name(&self) -> &'static str { "mssql05" }
fn mode(&self) -> u32 { 132 }
fn digest_words(&self) -> u32 { 8 }
fn needs_int64(&self) -> bool { false }
fn cpu_verify(&self, password: &str, salt: &[u8], hash: &[u32]) -> bool {
let mut hasher = Sha256::new();
hasher.update(salt);
for b in password.as_bytes() {
hasher.update(&[b.to_ascii_uppercase()]);
}
let result = hasher.finalize();
let mut computed = [0u32; 8];
for i in 0..8 {
computed[i] = u32::from_be_bytes(result[i * 4..i * 4 + 4].try_into().unwrap());
}
computed == hash
}
fn shader_source(&self, mode: &AttackModeType) -> &'static str {
match mode {
AttackModeType::BruteForce => include_str!("../mssql05_crack.wgsl"),
AttackModeType::Mask => include_str!("../mssql05_mask.wgsl"),
AttackModeType::Wordlist => include_str!("../mssql05_wordlist.wgsl"),
}
}
fn detect_patterns(&self) -> &[HashPattern] {
&[HashPattern { prefix: Some("0x0100"), hex_len: None, priority: 100 }]
}
fn parse_hash_string(&self, s: &str) -> Result<ParsedHash, String> {
let clean = s.trim();
if !clean.starts_with("0x0100") {
return Err("MSSQL 2005 hash must start with 0x0100".to_string());
}
let hex_body = &clean[6..];
if hex_body.len() < 64 {
return Err("MSSQL 2005 hash too short".to_string());
}
let salt_len = hex_body.len() - 64;
let salt_hex = &hex_body[..salt_len];
let hash_hex = &hex_body[salt_len..];
let mut target = [0u32; 8];
for i in 0..8 {
target[i] = u32::from_str_radix(&hash_hex[i * 8..i * 8 + 8], 16)
.map_err(|_| format!("Invalid hex at position {}", i * 8))?;
}
let salt_bytes = hex::decode(salt_hex).map_err(|e| format!("Invalid salt hex: {}", e))?;
Ok(ParsedHash {
hash_words: target,
extra_words: [0u32; 8],
salt: salt_bytes,
digest_words: 8,
})
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_mssql05_parse() {
let m = RawMssql05;
let pw = "abc";
let salt = "1234";
let mut hasher = sha2::Sha256::new();
hasher.update(salt.as_bytes());
for b in pw.as_bytes() {
hasher.update(&[b.to_ascii_uppercase()]);
}
let r = hasher.finalize();
let hex_str = format!("0x0100{}{}", hex::encode(salt), hex::encode(r));
let parsed = m.parse_hash_string(&hex_str).unwrap();
assert!(m.cpu_verify(pw, &parsed.salt, &parsed.hash_words));
}
}