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Patch out project_name check.

This commit is contained in:
SilicaAndPina 2020-04-05 18:15:06 +12:00
parent 950e17fa13
commit f9c0272e81
1 changed files with 87 additions and 10 deletions
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97
MakePsmGreatAgain.c
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@ -141,8 +141,6 @@ int sceAppUtilCacheMount_patched(){
return ret;
}
int ret0 (int *args)
{
return 0;
@ -167,20 +165,81 @@ SceUID sceKernelLoadStartModule_patched(char *path, SceSize args, void *argp, in
sceClibPrintf("SecurityCritical: %x\n",SecurityCritical);
}
if(strstr(path,"libmono_bridge.suprx")) //PSM
{
/*
int SceLibMonoBridge_70493FB9
(char *sdk_version,undefined4 param_2,uint param_3,uint param_4,char *project_name,
undefined4 param_6,void *output)
find offset by following the 5th paramater, into 3 different functions.
you'll come accross a strcmp, lower down is a if(*unk_whatever = 1)
thats the jump you wnat to patch.
*/
tai_module_info_t info;
info.size = sizeof(tai_module_info_t);
taiGetModuleInfo("SceLibMonoBridge", &info);
uint16_t patched_instruction = 0xBF00; //ARM9 "NO OPERATION"
int ret = 0;
sceClibPrintf("%s: nid 0x%x\n",path,info.module_nid);
switch(info.module_nid)
{
case 0x28D9013B: //SDK 2.00
ret = taiInjectData(info.modid, 0, 0x132F8, &patched_instruction, 0x2);
sceClibPrintf("TaiInjectData (sdk2.00) %x\n",ret);
break;
case 0x88B67542: //SDK 1.21
ret = taiInjectData(info.modid, 0, 0x12e48, &patched_instruction, 0x2);
sceClibPrintf("TaiInjectData (sdk1.21) %x\n",ret);
break;
}
}
if(strstr(path,"libpsm.suprx")) //PSM
{
PeekPositive = taiHookFunctionImport(&PeekPositive_ref,
"SceLibPsm",
TAI_ANY_LIBRARY,
0xA9C3CED6, // sceCtrlPeekBufferPositive
sceCtrlPeekBufferPositive_patched);
sceClibPrintf("PeekPositive: %x\n",PeekPositive);
PeekPositive = taiHookFunctionImport(&PeekPositive_ref,
"SceLibPsm",
TAI_ANY_LIBRARY,
0xA9C3CED6, // sceCtrlPeekBufferPositive
sceCtrlPeekBufferPositive_patched);
sceClibPrintf("PeekPositive: %x\n",PeekPositive);
}
if(strstr(path,"libScePsmEdata.suprx")) //PSM Unity
{
/*
finding offsets for project_name
look at int ScePsmEdata_2EC7439C(int param_1,undefined4 param_2,uint param_3,uint param_4,char *project_name)
find offset by following the 5th paramater, into 3 different functions.
you'll come accross a strcmp, lower down is a if(*unk_whatever = 1)
thats the jump you wnat to patch.
for UnityCheckDrm look for sceIoGetStat,
look at all cross references and the function
that contiains one that has arg1 "cache0:/_System"
is UnityCheckDrm().
*/
tai_module_info_t info;
info.size = sizeof(tai_module_info_t);
taiGetModuleInfo("ScePsmEdata", &info);
uint16_t patched_instruction = 0xBF00; //ARM9 "NO OPERATION"
int ret = 0;
sceClibPrintf("%s: nid 0x%x\n",path,info.module_nid);
switch(info.module_nid)
{
case 0xB4657632: //Unity 4.3.7.0
ret = taiInjectData(info.modid, 0, 0x3b50, &patched_instruction, 0x2); //allow for all project_name
sceClibPrintf("TaiInjectData (unity4.3.7.0) %x\n",ret);
UnityCheckDrm = taiHookFunctionOffset(&UnityCheckDrm_ref,
ret,
0,
@ -188,6 +247,21 @@ SceUID sceKernelLoadStartModule_patched(char *path, SceSize args, void *argp, in
1,
ret0);
sceClibPrintf("UnityCheckDrm: %x\n",UnityCheckDrm);
break;
case 0x21AE6754: //Unity Base
ret = taiInjectData(info.modid, 0, 0x10f9c, &patched_instruction, 0x2); //allow for all project_name
sceClibPrintf("TaiInjectData (unity base) %x\n",ret);
UnityCheckDrm = taiHookFunctionOffset(&UnityCheckDrm_ref,
ret,
0,
0x5a62, //PsmDrmBootCheck
1,
ret0);
sceClibPrintf("UnityCheckDrm: %x\n",UnityCheckDrm);
break;
}
}
return ret;
@ -258,10 +332,13 @@ void module_start(SceSize argc, const void *args) {
int module_stop(SceSize argc, const void *args) {
// release hooks
if (CacheMounted >= 0) taiHookRelease(CacheMounted, CacheMounted_ref);
if (SuiteCheckDrm >= 0) taiHookRelease(SuiteCheckDrm, SuiteCheckDrm_ref);
if (LoadModuleHook >= 0) taiHookRelease(LoadModuleHook, LoadModuleHook_ref);
if (UnityCheckDrm >= 0) taiHookRelease(UnityCheckDrm, UnityCheckDrm_ref);
if (SecurityCritical >= 0) taiHookRelease(SecurityCritical, SecurityCritical_ref);
if (PeekPositive >= 0) taiHookRelease(PeekPositive, PeekPositive_ref);
if (LoadModuleHook >= 0) taiHookRelease(LoadModuleHook, LoadModuleHook_ref);
return SCE_KERNEL_STOP_SUCCESS;
}