Code:
#include <stdio.h>
#include <stdlib.h>
#include <memory.h>
unsigned int rng_vec[607];
unsigned int * rng_tap = rng_vec;
unsigned int * rng_feed = 0;
// 123456005883380 - 65863543
// 21 43 65 00 85 38 83 f0
int v3; // r5@1
unsigned int v4; // r0@1
int v5; // r4@1
unsigned int v6; // r1@2
char *v7; // r2@2
unsigned int v8; // r0@3
int v9; // r4@3
unsigned int v10; // r1@4
signed int v11; // r0@5
signed int v12; // r0@5
int cnt; // r0@5
int v14; // r1@6
char v16[8]; // [sp+0h] [bp-20h]@1
char v17[8]; // [sp+8h] [bp-18h]@1
char Table_00[10] = { 0, 6, 1, 8, 7, 5, 3, 2,
9, 4};
char Table_01[10] = { 0, 2, 6, 6, 9, 5, 1, 4,
3, 8};
char Table_10[10] = { 0, 4, 9, 2, 3, 5, 7, 8,
1, 6};
char Table_11[10] = { 0, 8, 3, 4, 1, 5, 9, 6,
7, 2};
char Table_2[100] = {
0x11, 0x5D, 0x5B, 0x5A, 0x58, 0x57, 5, 7, 9, 0x12,
1, 0x45, 0x51, 0x50, 0x4E, 0x18, 0x16, 0x13, 0x1F,
0x64, 2, 0x1E, 0x3C, 0x24, 0x23, 0x3F, 0x43, 0x2A,
0x47, 0x63, 0xC, 0x1D, 0x44, 0x32, 0x35, 0x38, 0x2B,
0x21, 0x48, 0x59, 0xF, 0x1C, 0x27, 0x37, 0x2C, 0x31,
0x36, 0x3E, 0x49, 0x56, 0x55, 0x1B, 0x28, 0x2D, 0x3A,
0x33, 0x30, 0x3D, 0x4A, 0x10, 0x5F, 0x4B, 0x25, 0x34,
0x2F, 0x2E, 0x39, 0x40, 0x1A, 6, 0x61, 0x4C, 0x3B,
0x41, 0x42, 0x26, 0x22, 0x29, 0x19, 4, 0x62, 0x46,
0x14, 0x15, 0x17, 0x4D, 0x4F, 0x52, 0x20, 3, 0x53,
8, 0xA, 0xB, 0xD, 0xE, 0x60, 0x5E, 0x5C, 0x54};
char coda[8];
unsigned int isrand(unsigned int _seed)
{
unsigned int result; // r0@1
unsigned int seed; // r1@1
signed int i; // r4@3
rng_tap = rng_vec;
rng_feed = rng_vec+607-273;
seed = _seed % 0x7FFFFFFF;
result = _seed / 0x7FFFFFFF;
if ( !seed )
seed = 89482311;
for ( i = -20; i < 607; i = (i + 1) )
{
result = 3399 * (seed / 44488);
seed = 48271 * (seed % 44488) - 3399 * (seed / 44488);
if ( i >= 0 )
{
result = 4 * i;
rng_vec[i] = seed;
}
}
return result;
}
unsigned int lrand()
{
int v0; // r0@5
unsigned int result; // r0@7
--rng_tap;
if ( rng_tap < rng_vec )
{
if ( !rng_feed )
{
isrand(1u);
--rng_tap;
}
rng_tap += 607;
}
//v0 = rng_feed - 4;
rng_feed--; // = v0;
if ( rng_feed < rng_vec )
rng_feed +=607; //rng_feed +=2428;
result = (2 * (*rng_feed + *rng_tap)) >> 1;
*rng_feed = result;
return result;
}
int main(int argc, char* argv[])
{
int v15;
unsigned int imei=atoi(argv [1]);
// printf("%i",imei);
//IMEI = TAC + FAC + SNR + LUHN
// XXXXXX + YY + ZZZZZZ + L
//v4 = SNR + MAGIC
//SNR = XXXXXXX-YY-429081-L
//MAGIC = 313944551;
//v4 = 441525 + 313944551;
v4 = imei + 313944551;
v5 = 0;
do
{
v6 = v4 % 0xA;
v4 /= 0xAu;
v15 = 5 - v5++;
v17[v15] = v6;
}
while ( v5 < 6 );
v8 = (13 * v17[5] + 5 * v17[4] + 3 * v17[3] + 1553 * v17[2] + 23 *
v17[1] + 177 * v17[0]) % 99999;
v9 = 7;
do
{
v10 = v8 % 0xA;
v8 /= 0xAu;
v17[v9] = v10;
v9 = (v9 + 255) & 0xFF;
}
while ( v9 > 5 );
v16[0] = Table_00[v17[0]];
v16[1] = Table_01[v17[1]];
v16[2] = Table_10[v17[2]];
v16[3] = Table_11[v17[6]];
v11 = Table_2[(10 * v17[3]) + v17[4]] - 1;
v16[4] = v11 / 10;
v16[5] = v11 % 10;
v12 = Table_2[99 - ((10 * v17[7]) + v17[5])] - 1;
v16[6] = v12 / 10;
v16[7] = v12 % 10;
cnt = 0;
v3 = 0;
do
{
v14 = (v16[cnt] << 4 * cnt) | v3;
cnt = (cnt + 1) & 0xFF;
v3 = v14;
}
while ( cnt < 8 );
v14 = 0;
isrand(v3);
do
coda[v14++] = lrand() % 0xA + 48;
while ( v14 < 8 );
printf("%s",coda);
return 0;
}