vibe coded a crc reverse engineer tool on gpu, because why not

2026-04-12 23:05:19 +02:00
commit 973b4dba18
6 changed files with 881 additions and 0 deletions
--- a/src/main.rs
+++ b/src/main.rs
@@ -0,0 +1,52 @@
+mod cracker;
+mod gpu;
+
+use std::fs::File;
+use std::io::BufWriter;
+
+use cracker::{Constraints, TestCase, ValueRange};
+use gpu::GpuCracker;
+
+fn main() {
+    pollster::block_on(run());
+}
+
+async fn run() {
+    let cracker = GpuCracker::new().await;
+
+    let mut out = BufWriter::new(
+        File::create("results.txt").expect("cannot create results.txt"),
+    );
+
+    let count = cracker.run(
+        &[
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x00], 0x94, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x01], 0x61, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x02], 0x8B, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x03], 0x7E, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x04], 0xAA, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x05], 0x5F, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x06], 0xB5, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x07], 0x40, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x08], 0xE8, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x09], 0x1D, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x0A], 0xF7, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x0B], 0x02, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x0C], 0xD6, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x0D], 0x23, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x0E], 0xC9, 0x00FF),
+            TestCase::masked(vec![0x01, 0x23, 0x45, 0x67, 0x89, 0x0F], 0x3C, 0x00FF),
+        ],
+        &Constraints {
+            width:  13,
+            poly:   ValueRange::Range(0x0000..=0x1FFF),
+            init:   ValueRange::Range(0x0000..=0x1FFF),
+            xorout: ValueRange::Fixed(0x0000),
+            refin:  None,
+            refout: None,
+        },
+        &mut out,
+    );
+
+    println!("found {count} match(es) — written to results.txt");
+}