修改进程权限(转载)
先来看看这个函数的定义(Winehq给出)：
NTSTATUS RtlAdjustPrivilege
(
ULONG Privilege,
BOOLEAN Enable,
BOOLEAN CurrentThread,
PBOOLEAN Enabled
)
参数的含义：
Privilege [In] Privilege index tochange.
// 所需要的权限名称，可以到MSDN查找关于ProcessToken & Privilege内容可以查到
Enable [In] If TRUE, then enable the privilege otherwisedisable.
// 如果为True 就是打开相应权限，如果为False 则是关闭相应权限
CurrentThread [In] If TRUE, then enable in callingthread, otherwise process.
// 如果为True 则仅提升当前线程权限，否则提升整个进程的权限
Enabled [Out] Whether privilege was previously enabled ordisabled.
// 输出原来相应权限的状态（打开 | 关闭）
很多人大概没有听说过他的大名，但是相信有很多人见过进程提权的过程
拷一段我写的提权上来吧
BOOL ImproveProcPriv()
{
HANDLE token;
//提升权限
if(!OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES,&token))
{
MessageBox(NULL,"打开进程令牌失败...","错误",MB_ICONSTOP);
returnFALSE;
}
TOKEN_PRIVILEGES tkp;
tkp.PrivilegeCount = 1;
::LookupPrivilegeValue(NULL,SE_DEBUG_NAME,&tkp.Privileges[0].Luid);
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
if(!AdjustTokenPrivileges(token,FALSE,&tkp,sizeof(tkp),NULL,NULL))
{
MessageBox(NULL,"调整令牌权限失败...","错误",MB_ICONSTOP);
returnFALSE;
}
CloseHandle(token);
return TRUE;
}
看看吧，这个提权快要累死了...
但是 如果有这个函数就不一样了，你可以只用一个函数就实现这个功能，甚至功能远多于上面的代码...
通过恰当的IDE设置和必要的Defination，上面这个函数的功能你完全可以通过一行代码来实现。
RtlAdjustPrivilege(SE_DEBUG_NAME,1,0,NULL);
正文：
下面我们看一下这个函数是怎么运行的，顺便学习下强大的IDA
IDA 载入ntdll.dll （我这里载入的是 WinDBG自动下载的 Symbol里面的英文版本 可能不同的Windows版本略有不同）
先把函数的原型给输入IDA 方便一下阅读，然后开始阅读汇编代码了（党和国家考验我们的时候到了）。
看看Graph View 真的是很牛啊...
看看函数最开头...
mov edi, edi ; 这句话是废指令
push ebp
mov ebp, esp
sub esp, 30h ; 48个字节的子过程域Auto变量
cmp [ebp+CurrentThread], 1 ; 判断CurrentThread参数是否被指定为1
mov eax, dword_7C97B0C8
mov [ebp+var_4], eax
mov eax, [ebp+Enabled]
mov [ebp+IsEnabled], eax ; BOOL *IsEnabled = Enabled;
lea eax, [ebp+var_28]
push eax
jz loc_7C93378B
判断是调整进程权限还是线程权限，
CurrentThread == TRUE
push 0
push 28h ;TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY
push 0FFFFFFFEh ;GetCurrentThread()
call ZwOpenThreadToken
jmp loc_7C929A7A
CurrentThread == FALSE
push 28h ;TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY
push 0FFFFFFFFh ;GetCurrentProcess()
call NtOpenProcessToken
然后两个代码块同时指向这里
loc_7C929A7A: ; 很明白了吧 判断进程/线程令牌是否成功被打开
test eax, eax
jl short loc_7C929AE4; 没成功则跳
若 执行成功
mov eax, [ebp+Privilege]
mov [ebp+dwPrivilege], eax
mov al, [ebp+Enable]
xor ecx, ecx ; ecx清零
neg al
push esi
mov [ebp+NewState], 1
mov [ebp+var_C], ecx
sbb eax, eax
and eax, 2
mov [ebp+var_8], eax
lea eax, [ebp+ReturnLength] ; 实际返回长度
push eax
lea eax, [ebp+OldState]
push eax ; 旧的特权指针
push 10h ;sizeof(TOKEN_PRIVILEGES)
lea eax, [ebp+NewState]
push eax ; 新的特权指针
push ecx ;FALSE 因为上面有xor ecx,ecx
push [ebp+TokenHandle]
call NtAdjustPrivilegesToken ; 调用AdjustPrivilegesToken提权
push [ebp+TokenHandle]
mov esi, eax ; eax备份
call ZwClose ; 关闭 内核对象句柄
cmp esi, 106h ; 判断NtAdjustPrivilege执行情况 106h =STATUS_NOT_ALL_ASSIGNED
jz loc_7C947DF2
判断是否执行成功之后，开始输出最后一个参数
cmp [ebp+OldState], 0
mov ecx, [ebp+IsEnabled]
jnz loc_7C929E99
若 OldState != 0 则
mov al,[ebp+Enable] ; 应该很明显了 把Enable变量赋给al 也就是eax最后两位
若OldState == 0 则
mov eax, [ebp+var_18]
shr eax, 1
and al, 1
jmp loc_7C929ADF
这个函数大致流程就是这样。
到这里差不多可以按一下传说中的F5了
int __stdcallRtlAdjustPrivilege(int Privilege, char Enable, charCurrentThread, int Enabled)
{
int result; //eax@2
signed intAdjustResult; // esi@4
char returnValue; //al@7
int v7; //[sp+2Ch] [bp-4h]@1
int IsEnabled; //[sp+4h] [bp-2Ch]@1
int TokenHandle; //[sp+8h] [bp-28h]@2
int dwPrivilege; //[sp+20h] [bp-10h]@4
signed intNewState; // [sp+1Ch] [bp-14h]@4
int v12; //[sp+24h] [bp-Ch]@4
int v13; //[sp+28h] [bp-8h]@4
int OldState; //[sp+Ch] [bp-24h]@4
char ReturnLength; //[sp+0h] [bp-30h]@4
unsigned intv16; // [sp+18h] [bp-18h]@11
v7 = dword_7C97B0C8;
IsEnabled = Enabled;
if ( CurrentThread == 1 )
result = ZwOpenThreadToken(-2, 40, 0, &TokenHandle);
else
result = NtOpenProcessToken(-1, 40, &TokenHandle);
if ( result >= 0 )
{
dwPrivilege = Privilege;
NewState = 1;
v12 = 0;
v13 = -(Enable != 0) & 2;
AdjustResult = NtAdjustPrivilegesToken(TokenHandle, 0,&NewState, 16, &OldState, &ReturnLength);
ZwClose(TokenHandle);
if ( AdjustResult == 262 )
AdjustResult = -1073741727;
if ( AdjustResult >= 0 )
{
if ( OldState )
returnValue = (v16 >> 1) &1;
else
returnValue = Enable;
*(_BYTE *)IsEnabled = returnValue;
}
result = AdjustResult;
}
return result;
}
可读性好像仍然不高，看看这个...
/******************************************************************************
*RtlAdjustPrivilege [NTDLL.@]
*
* Enables or disables a privilege from the callingthread or process.
*
* PARAMS
* Privilege [I] Privilegeindex to change.
* Enable [I] If TRUE, then enable the privilege otherwise disable.
* CurrentThread [I] If TRUE, then enable in callingthread, otherwise process.
* Enabled [O]Whether privilege was previously enabled or disabled.
*
* RETURNS
* Success: STATUS_SUCCESS.
* Failure: NTSTATUS code.
*
* SEE ALSO
* NtAdjustPrivilegesToken, NtOpenThreadToken,NtOpenProcessToken.
*
*/
NTSTATUS WINAPI
RtlAdjustPrivilege(ULONG Privilege,
BOOLEAN Enable,
BOOLEAN CurrentThread,
PBOOLEAN Enabled)
{
TOKEN_PRIVILEGES NewState;
TOKEN_PRIVILEGES OldState;
ULONG ReturnLength;
HANDLE TokenHandle;
NTSTATUS Status;
TRACE("(%d, %s, %s,%p)\n", Privilege, Enable ? "TRUE": "FALSE",
CurrentThread ? "TRUE" : "FALSE",Enabled);
if (CurrentThread)
{
Status =NtOpenThreadToken(GetCurrentThread(),
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
FALSE,
&TokenHandle);
}
else
{
Status =NtOpenProcessToken(GetCurrentProcess(),
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
&TokenHandle);
}
if (!NT_SUCCESS(Status))
{
WARN("Retrievingtoken handle failed (Status %x)\n", Status);
returnStatus;
}
OldState.PrivilegeCount = 1;
NewState.PrivilegeCount = 1;
NewState.Privileges[0].Luid.LowPart = Privilege;
NewState.Privileges[0].Luid.HighPart = 0;
NewState.Privileges[0].Attributes = (Enable) ?SE_PRIVILEGE_ENABLED : 0;
Status = NtAdjustPrivilegesToken(TokenHandle,
FALSE,
&NewState,
sizeof(TOKEN_PRIVILEGES),
&OldState,
&ReturnLength);
NtClose (TokenHandle);
if (Status ==STATUS_NOT_ALL_ASSIGNED)
{
TRACE("Failedto assign all privileges\n");
returnSTATUS_PRIVILEGE_NOT_HELD;
}
if (!NT_SUCCESS(Status))
{
WARN("NtAdjustPrivilegesToken()failed (Status %x)\n", Status);
returnStatus;
}
if (OldState.PrivilegeCount== 0)
*Enabled = Enable;
else
*Enabled =(OldState.Privileges[0].Attributes & SE_PRIVILEGE_ENABLED);
return STATUS_SUCCESS;
}