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sunil1
sunil1
sunil1
Newbie
1
05-12-2019, 12:55 PM
#11



Code:

int sub_8048430()
{
  int v0; // r5
  int v1; // r4
  int v2; // r4
  int v3; // r0
  int v5; // [sp+0h] [bp-218h]
  int v6; // [sp+200h] [bp-18h]

  v0 = dword_8064CC8;
  v6 = dword_8064CC8;
  v1 = sub_8057998();
  sub_8006FB4(&v5, 512);
  if ( !v1 )
  {
    v2 = 1;
    goto LABEL_59;
  }
  if ( v1 == 4 )
  {
    sub_8057942(&unk_807CBF8, &v5, 512, 0);
    if ( sub_8057D7E(&unk_807CBF8, (int)"data") )
    {
      v2 = 1;
      goto LABEL_59;
    }
    goto LABEL_58;
  }
  if ( v1 != 1 )
  {
LABEL_58:
    v2 = 0;
    goto LABEL_59;
  }
  if ( sub_8057D7E(&unk_807CBF8, (int)"?xml")
    || sub_8057D7E(&unk_807CBF8, (int)"data")
    || sub_8057D7E(&unk_807CBF8, (int)"patches")
    || sub_8038688() != 1 )
  {
LABEL_21:
    if ( sub_8057D7E(&unk_807CBF8, (int)"configure") )
    {
      v2 = sub_80331C8();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"program") )
    {
      v2 = sub_8034FB0();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"firmwarewrite") )
    {
      v2 = sub_8033978();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"patch") )
    {
      v2 = sub_8034388();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"setbootablestoragedrive") )
    {
      v2 = sub_8035B78();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"ufs") )
    {
      v2 = sub_8035F44();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"emmc") )
    {
      v2 = sub_8035F44();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"power") )
    {
      v2 = sub_8034E74();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"benchmark") )
    {
      v2 = sub_8032DD4();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"read") )
    {
      v2 = sub_8035730();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"getstorageinfo") )
    {
      v2 = sub_8034250();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"getcrc16digest") )
    {
      v2 = sub_8033D2C(1);
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"getsha256digest") )
    {
      v2 = sub_8033D2C(0);
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"erase") )
    {
      v2 = sub_80336D0();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"peek") )
    {
      v2 = sub_8034A24();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)"poke") )
    {
      v2 = sub_8034C1C();
      goto LABEL_59;
    }
    if ( sub_8057D7E(&unk_807CBF8, (int)&dword_80486C8) )
    {
      v2 = sub_803437C();
      goto LABEL_59;
    }
    if ( !sub_8057D7E(&unk_807CBF8, (int)"?xml")
      && !sub_8057D7E(&unk_807CBF8, (int)"data")
      && !sub_8057D7E(&unk_807CBF8, (int)"patches") )
    {
      if ( sub_8057942(&unk_807CBF8, &v5, 512, 0) )
        sub_8038E28("WARNING: Ignoring unrecognized tag '%s'. Continuing.");
      else
        sub_8038E28("WARNING: Ignoring unrecognized tag too long to display. Continuing.");
      v2 = sub_8054FF4(1);
      goto LABEL_59;
    }
    goto LABEL_58;
  }
  if ( byte_8066114 || sub_8057D7E(&unk_807CBF8, (int)&dword_80486C8) )
  {
    if ( !byte_8066114 && sub_8057D7E(&unk_807CBF8, (int)&dword_80486C8) )
    {
      v2 = sub_803437C();
      goto LABEL_59;
    }
    goto LABEL_21;
  }
  if ( sub_8057D7E(&unk_807CBF8, (int)&dword_80486CC) )
  {
    v3 = sub_8057984(&unk_807CBF8, 4, &unk_807F1F0);
    v2 = sub_8035CE4(v3);
  }
  else
  {
    sub_8038E28("ERROR: Only nop and sig tag can be recevied before authentication.");
    v2 = sub_8054FF4(0);
  }
LABEL_59:
  if ( v6 != v0 )
    sub_8018D6C();
  return v2;
}

The authentication is implemented in Firehose Programmer (forexample: prog_emmc_firehose_8937_ddr.mbn).

And the firehose programmer will be loaded and verified by PBL(located in ROM of Qualcomm soc).
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