神兵利器 | 技術分享CS二開--特征消除2

cobaltstrike4.5特征消除2

修改了內置stage的配置，實現硬性特征消除

修改部分payload，實現基本免殺

修改checksum8 判等參數

public static long checksum8(String text) {
if (text.length() < 4) {
return 0L;
}
text = text.replace("/", "");
long sum = 0L;
for (int x = 0; x < text.length(); ++x) {
sum += text.charAt(x);
}
return sum ;
}

修改隨機生成算法

寫入方法,傳值

   public static void main(String []args) {
        String key = "0797809e694f99998172aec328c672f26eea6a664.cs";
        long flag = checksum8(key);
        System.out.println(flag);
    }}
public static boolean isStager(String uri) {
   return checksum8(uri) == ****;

修改傳值

修改common/CommonUtils的

public static String MSFURI(final int n) {
final String[] array = toArray("a, b, c, d, e, f, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9");
StringBuffer sb;
do {
sb = new StringBuffer(n + 1);
sb.append("/");
for (int i = 0; i < n; ++i) {
sb.append(pick(array));
}
} while (checksum8(sb.toString()) != ****);
return
public static String MSFURI_X64() {
final String[] array = toArray("a, b, c, d, e, f, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9");
String string;
do {
string = "/" + pick(array) + pick(array) + pick(array) + pick(array);
} while (checksum8(string) != ****);

修改return的結果和判等結果

簡單免殺

修改

/aggressor/dialogs/PayloadGeneratorDialog.java

encoders/Transforms.java

自定義加載器

#include 
#include 
unsigned char buf[] ="";
void main(){   
   ***
}

重新打包跑就行了

關于beacon的部分不方便多說，就沒寫到這里

后續看看要不要公開吧