easylinux/cam-reverse
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move utils code; fix sprintf; implement enc/dec

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This commit is contained in:
DavidVentura
2024-01-24 17:13:34 +01:00
parent f00821f8bd
commit ff684361f4
5 changed files with 289 additions and 112 deletions
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asd.js
+39 -19
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@@ -1,4 +1,5 @@
import { replaceFunctions, Commands, CommandsByValue, u16_swap } from "./func_replacements.js";
import { placeholderTypes, sprintf } from "./utils.js";
const hook_fn = (name_in_elf, enter, leave) => {
var symbol_addr = DebugSymbol.fromName(name_in_elf).address;
@@ -47,8 +48,8 @@ const hook___android_log_print = () => {
// let _prio = args[0].toInt32();
let _tag = args[1].readCString();
let fmt = args[2].readCString();
// console.log(fmt); // debug if crashes due to missing placeholder
const types = placeholderTypes(fmt); // ['s', 'd', ..]`
// console.log(fmt, types); // debug if crashes due to missing placeholder
let o = {
s: (x) => x.readCString(),
@@ -98,6 +99,7 @@ const hook_udpsend = () => {
}
},
);
let s = {};
hook_fn(
"PktSeq_seqGet",
@@ -110,6 +112,42 @@ const hook_udpsend = () => {
console.log(data);
},
);
let e = {};
hook_fn(
"XqBytesEnc",
(args) => {
s.buf_ptr = args[0];
s.m_buflen = args[1].toInt32();
s.param3 = args[2].toInt32();
s.buf_in = s.buf_ptr.readByteArray(s.m_buflen);
},
(retval) => {
const bufout = s.buf_ptr.readByteArray(s.m_buflen);
console.log(`XqBytesEnc buflen: ${s.m_buflen}, param3: ${s.param3}, buf_in:`);
console.log(s.buf_in);
console.log(`bufout`);
console.log(bufout);
},
);
let d = {};
hook_fn(
"XqBytesDec",
(args) => {
s.buf_ptr = args[0];
s.m_buflen = args[1].toInt32();
s.param3 = args[2].toInt32();
s.buf_in = s.buf_ptr.readByteArray(s.m_buflen);
},
(retval) => {
const bufout = s.buf_ptr.readByteArray(s.m_buflen);
console.log(`XqBytesDec buflen: ${s.m_buflen}, param3: ${s.param3}, buf_in:`);
console.log(s.buf_in);
console.log(`bufout`);
console.log(bufout);
},
);
};
const hook_in_out_buf = (sym, insize, outsize) => {
@@ -190,22 +228,4 @@ function doHooks() {
console.log("NO WORKING");
}
}
const matchy = /%[0-9.-]*([a-z])/g;
const replacy = /(.*?)%[0-9.-]*([a-z])/g;
const placeholderTypes = (str) => {
// '%-16s, line %4d, %-16s:ret=%d,broadcast lan_seach to %s:%.3f!!!!'
// =>
// [ 's', 'd', 's', 'd', 's', 'f' ]
return [...str.matchAll(matchy)].map((m) => m[1]);
};
const sprintf = (str, values) => {
// '%-16s, line %4d, %-16s:ret=%d,broadcast lan_seach to %s:%.3f!!!!' +
// ["asd", 20, ...]
// =>
// asd, line 20, ...
const matches = str.matchAll(replacy);
return [...matches].map((m, idx) => m[1] + values[idx].toString()).join("");
};
setImmediate(doHooks);